RESEARCH AREAS

STELLAR ASTRONOMY

  • Preparation of the PLAnetary Transits and Oscillations of stars (PLATO) space mission: development of methods for the determination of the non-seismic stellar parameters (effective temperature, chemical composition, ...).
  • PI of the B-fields in OB stars survey (BOB) whose aim is to investigate the incidence rate and properties of magnetic fields in massive stars.
  • Involvement in the Gaia-ESO survey: determination of the parameters and chemical abundances of the OB stars observed in the course of the survey (especially in the open clusters NGC 3293 and Trumpler 14).
  • Preparation of the Gaia space mission: development of softwares for the determination of the orbital elements of double-lined binary systems (eccentricity, mass function, etc.) based on the radial velocities of both components.
  • Study of the chemical composition of nearby, massive stars: discovery of phenomena not predicted by theoretical models, in particular a nitrogen excess at the surface of slow rotators possibly arising from magnetic processes.
  • Constraints on the neon abundance of the nearby intestellar gas based on massive stars: evidence that this element in the Sun is likely not abundant enough to solve the discrepancy between the predictions of solar interior models and the results of helioseismology.
  • Preparation of the CoRoT (Convection Rotation and planetary Transits) space mission: characterisation of the massive, pulsating stars observed by the satellite and determination of the stellar parameters needed for theoretical modelling (temperature, abundances, etc.).
  • Optical classification of the X-ray sources detected in the course of the North Ecliptic Pole (NEP) survey conducted by the ROSAT satellite: evidence for a population of young stars probably arising from a recent (within the last 100 million years) stellar formation burst in the solar neighbourhood.
  • Determination of the photospheric abundances of binary stars strongly emitting in X rays (RS CVn systems): discovery of chemical peculiarities likely related to their very strong chromospheric activity (see figure). This is well illustrated by the case of oxygen (see figure).
  • Study of the large-scale structure of the winds of massive stars: indication that anisotropic outflows are ubiquitous in OB stars and can also be, in a few cases, found in the more evolved stars of the Wolf-Rayet type. The fact that the pattern of variability is strikingly different on long timescales (see figure) hints at a link with some kind of photospheric activity, e.g. magnetic processes and/or pulsations operating at the stellar surface.
  • Identification of the optical counterpart to the X-ray source X1908+075 discovered by the RXTE satellite (see figure): one of the few systems known in the Galaxy made up of an O supergiant associated to a neutron star (see figure).

    RELATED PUBLICATIONS:
    • Morel, et al. 1996, in 33rd Liège International Astrophysical Colloquium:"WR stars in the framework of stellar evolution", 271 ps pdf
      "The photosphere-wind connection in Wolf-Rayet stars: simultaneous photometry and spectroscopy of EZ CMa"
    • Marchenko, et al. 1996, in 33rd Liège International Astrophysical Colloquium:"WR stars in the framework of stellar evolution", 265 ps pdf
      "The all-variable WN 8 stars: the stellar core as driver"
    • Morel, et al. 1997, ApJ, 482, 470 ps pdf
      "Optical spectroscopy of EZ CMa: indication for large-scale structures in a Wolf-Rayet wind"
    • Marchenko, et al. 1998, MNRAS, 294, 642 ps pdf
      "A comprehensive variability study of the enigmatic WN 8 stars: final results"
    • Morel, et al. 1998, ApJ, 498, 413 ps pdf
      "Coupled line-profile and continuum variations in EZ CMa: implications for the driving mechanism of global wind structures in Wolf-Rayet winds"
    • Morel, et al. 1998, in ESO Colloquium:"Cyclical variability in stellar winds", 109 ps pdf
      "Confirmation of a 2.3 day periodicity in the Wolf-Rayet Star WR 134: a twin of EZ CMa?"
    • Morel 1998, Ph.D. Dissertation, Université de Montréal (some bits in glorious French...) ps pdf
      "On the nature of the spectral and photometric periodic variability of apparently single Wolf-Rayet stars"
    • Morel 1999, Observatory, 119, 345 ps pdf
      "On the nature of the spectral and photometric periodic variability of apparently single Wolf-Rayet stars"
    • Morel, et al. 1999, Ap&SS, 260, 173 pdf
      "Cyclical spectral and photometric variations of the apparently single Wolf-Rayet star WR134"
    • Morel, et al. 1999, ApJ, 518, 428 ps pdf
      "A 2.3 day periodic variability in the apparently single Wolf-Rayet star WR 134: collapsed companion or rotational modulation?"
    • Morel, et al. 1999, A&A, 349, 457 ps pdf
      "An investigation of the large-scale variability of the apparently single Wolf-Rayet star WR1"
    • Morrell, et al. 2001, MNRAS, 326, 85 ps pdf
      "Optical spectroscopy of X-ray Mega targets in the Carina Nebula - II. the massive double-lined O-type binary HD 93205"
    • Demers, et al. 2002, ApJ, 577, 409 ps pdf
      "The quadruple Wolf-Rayet system GP Cep: spectral types, masses, mass-loss rate and colliding winds"
    • Morel, et al. 2003, in Proc. IAU 215: "Stellar Rotation", ASP Conf. Series, 45 ps pdf
      "A Search for rotationally-modulated Hα variability in OB supergiants"
    • Morel, et al. 2003, Bulletin of the Astronomical Society of India, 31, 333 ps pdf
      "Large-scale wind structures in OB supergiants: a search for rotationally modulated Hα variability"
    • Morel, et al. 2003, A&A, 412, 495 ps pdf
      "The photospheric abundances of active binaries II. Atmospheric parameters and abundance patterns for 6 single-lined RS CVn systems"
    • Morel, et al. 2003, in Proc. IAU 219: "Stars as suns: activity, evolution, and planets", ASP Conf. Series, 146 ps pdf
      "The photospheric abundances of active binaries: first results"
    • Morel, et al. 2004, MNRAS, 351, 552 ps pdf
      "Large-scale wind structures in OB supergiants: a search for rotationally modulated Hα variability"
    • Morel & Micela 2004, A&A, 423, 677 ps pdf
      "On the determination of oxygen abundances in chromospherically active stars"
    • Marchenko et al. 2004, MNRAS, 353, 153 ps pdf
      "Hydrogen in the atmosphere of the evolved WN3 Wolf-Rayet star WR3: defying an evolutionary paradigm?"
    • Morel et al. 2004, A&A, 426, 1007 ps pdf
      "The photospheric abundances of active binaries III. Abundance peculiarities at high activity levels"
    • Morel & Grosdidier 2005, MNRAS, 356, 665 ps pdf
      "Near-infrared identification of the counterpart to X1908+075: a new OB-supergiant X-ray binary"
    • Affer et al. 2005, A&A, 433, 647 ps pdf
      "Spectroscopic determination of photospheric parameters and chemical abundances of 6 K-type stars"
    • Morel et al. 2005, in "Cool Stars, Stellar Systems and the Sun - 13th Cambridge workshop", SP-560, 829 ps pdf
      "Photospheric abundance peculiarities in chromospherically active stars"
    • Affer et al. 2006, in "Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites", ESO Astrophysics Symposia, 31 pdf
      "A comparison of methods for photospheric abundance determinations in K-type stars"
    • Morel et al. 2006, in "Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites", ESO Astrophysics Symposia, 64 ps pdf
      "Some concerns about the reliability of LTE abundance analyses in cool, active stars"
    • Morel et al. 2006, Ap&SS, 304, 185 ps pdf
      "Photospheric abundance peculiarities in RS CVn binaries"
    • Morel & Grosdidier 2006, Ap&SS, 304, 295 ps pdf
      "X1908+075: a late O-type supergiant with a neutron star companion"
    • Morel et al. 2006, A&A, 457, 651 ps pdf
      "Abundance analysis of prime B-type targets for asteroseismology I. Nitrogen excess in slowly-rotating β Cephei stars"
    • Briquet & Morel 2007, Communications in Asteroseismology, vol.150, 183 ps pdf
      "An abundance analysis of slowly pulsating B stars"
    • Morel et al. 2007, Communications in Asteroseismology, vol.150, 199 ps pdf
      "Nitrogen excess in slowly-rotating β Cephei stars: deep mixing or diffusion?"
    • Morel & Aerts 2007, Communications in Asteroseismology, vol.150, 201 ps pdf
      "An abundance study of the B-type targets for the asteroseismology programme of the CoRoT mission"
    • Yakut, Aerts & Morel 2007, A&A, 467, 647 ps pdf
      "The early-type close binary CV Velorum revisited"
    • Briquet et al. 2007, MNRAS, 381, 1482 ps pdf
      "An asteroseismic study of the β Cephei star θ Ophiuchi: constraints on global stellar parameters and core overshooting"
    • Howarth et al. 2007, MNRAS, 381, 433 ps pdf
      "Towards an understanding of the Of?p star HD 191612: optical spectroscopy"
    • Morel & Butler 2007, in "Unsolved Problems in Stellar Physics", AIP Conference Proceedings Series, 948, 225 ps pdf
      "Reconciling solar interior models and helioseismological data: constraints on the neon content of the Sun from nearby B stars"
    • Morel 2007, in "Unsolved Problems in Stellar Physics", AIP Conference Proceedings Series, 948, 229 ps pdf
      "Deep mixing in slowly-rotating B dwarfs: the possible role played by magnetic fields"
    • Morel & Butler 2008, in "Helioseismology, Asteroseismology and MHD Connections", Journal of Physics: Conference Series, 118, 2066 ps pdf
      "Is neon a viable solution to the solar model problem? Insights from nearby B-type stars"
    • Uytterhoeven et al. 2008, in "Helioseismology, Asteroseismology and MHD Connections", Journal of Physics: Conference Series, 118, 2077 ps pdf
      "Close-up of primary and secondary asteroseismic CoRoT targets and the ground-based follow-up observations"
    • Morel et al. 2008, in "Precision Spectroscopy in Astrophysics", ESO Astrophysics Symposia, 301 ps pdf
      "The chemical composition of B-type pulsators: some unexpected results"
    • Hubrig et al. 2008, Contrib. Astron. Obs. Skalnaté Pleso, 38, 223 ps pdf
      "Magnetic fields in massive stars"
    • Morel, Hubrig & Briquet 2008, A&A, 481, 453 ps pdf
      "Nitrogen enrichment, boron depletion and magnetic fields in slowly-rotating B-type dwarfs"
    • Affer, Micela, Morel 2008, A&A, 483, 801 ps pdf
      "The stellar North Ecliptic Pole Survey II. Spectral analysis"
    • Morel & Butler 2008, A&A, 487, 307 ps pdf
      "The neon content of nearby B-type stars and its implications for the solar model problem"
    • Hubrig, et al. 2008, A&A, 488, 287 ps pdf
      "New insights into the nature of the peculiar star Theta Carinae"
    • Morel 2009, in "Evolution and Pulsation of Massive Stars on the Main Sequence and Close to it", CoAst, 158, 122 pdf
      "Abundances of massive stars: some recent developments"
    • Degroote et al. 2009, in "Evolution and Pulsation of Massive Stars on the Main Sequence and Close to it", CoAst, 158, 167 pdf
      "Space observations of B stars with CoRoT"
    • Montalbán, Miglio, & Morel 2009, in "Evolution and Pulsation of Massive Stars on the Main Sequence and Close to it", CoAst, 158, 288 pdf
      "Uncertainties in the chemical composition of B-type stars: effects on the opacity and on the excitation of pulsation modes"
    • Briquet et al. 2009, in "Evolution and Pulsation of Massive Stars on the Main Sequence and Close to it", CoAst, 158, 292 pdf
      "Ground-based follow-up observations of the β Cephei CoRoT main target HD 180642"
    • Hubrig et al. 2009, AN, 330, 317 pdf
      "New magnetic field measurements of β Cephei stars and Slowly Pulsating B stars"
    • Hubrig et al. 2009, The Messenger, 135, 20 pdf
      "Studying the Magnetic Properties of Upper Main-sequence Stars with FORS1"
    • Hubrig et al. 2009, in Proceedings of IAU Symposium 259 "Cosmic Magnetic Fields: from Planets, to Stars and Galaxies", 259, 389 pdf
      "New magnetic field measurements of β Cephei stars and Slowly Pulsating B stars"
    • Degroote et al. 2009, A&A, 506, 111 pdf
      "Evidence for nonlinear resonant mode coupling in the β Cephei star HD 180642 (V1449 Aql) from CoRoT space-based photometry"
    • Niemczura, Morel, & Aerts 2009, A&A, 506, 213 pdf
      "Abundance analysis of prime B-type targets for asteroseismology II. B6-B9 stars in the field of view of the CoRoT satellite"
    • Briquet et al. 2009, A&A, 506, 269 pdf
      "Ground-based observations of the β Cephei CoRoT main target HD 180642: abundance analysis and mode identification"
    • Salmon et al. 2009, in proceedings of "Stellar pulsations: challenges for theory and observation", AIPC, 1170, 385 pdf
      "The enigma of B-type pulsators in the SMC"
    • Briquet et al. 2009, in proceedings of "Stellar pulsations: challenges for theory and observation", AIPC, 1170, 394
      "An asteroseismic study of the β Cephei CoRoT main target HD 180642: results from the ground-based campaign"
    • Maceroni et al. 2009, A&A, 508, 1375 pdf
      "HD 174884: a strongly eccentric, short-period early-type binary system discovered by CoRoT"
    • Hubrig et al. 2009, RMxAC, 36, 319 pdf
      "The evolution of magnetic fields in early B-type stars"
    • Carrier et al. 2010, Ap&SS, 328, 83 pdf
      "The red-giant CoRoT target HR 7349"
    • Carrier et al. 2010, A&A, 509, A73 pdf
      "Non-radial oscillations in the red giant HR 7349 measured by CoRoT"
    • Lefever et al. 2010, A&A, 515, A74 pdf
      "Spectroscopic determination of the fundamental parameters of 66 B-type stars in the field-of-view of the CoRoT satellite"
    • Mosser et al. 2010, A&A, 517, A22 pdf
      "Red-giant seismic properties analyzed with CoRoT"
    • Morel 2010, in Bulletin of the Royal Society of Sciences of Liège, 79, 38 pdf
      "Studying bright, massive stars in the era of large telescopes II Wind structures"
    • Nazé et al. 2010, ApJ, 719, 634 pdf
      "First orbital solution for the non-thermal emitter Cyg OB2#9"
    • Hekker et al. 2010, A&A, 520, A60 pdf
      "Oscillation mode life times of red giants observed during the initial and first anticentre long run of CoRoT"
    • Salmon et al. 2010, in Proceedings of the 4th HELAS International Conference: "Seismological Challenges for Stellar Structure" pdf
      "Can an underestimation of opacity explain B-type pulsators in the SMC?"
    • Morel 2011, in proceedings of IAU Symposium 272 "Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits", 97 pdf
      "Mixing in two magnetic OB stars discovered by the MiMeS collaboration"
    • Morel et al. 2011, in proceedings of IAU Symposium 272 "Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits", 414 pdf
      "Variability monitoring of OB stars during the Mons campaign"
    • Fahed et al. 2011, in proceedings of IAU Symposium 272 "Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits", 501 pdf
      "Spectroscopic follow-up of the colliding-wind binary WR 140 during the 2009 January periastron passage"
    • Rauw & Morel 2011, in proceedings of IAU Symposium 272 "Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits", 612 pdf
      "The mysterious high-latitude O-star HD 93521: new results from XMM-Newton observations"
    • Morel et al. 2011, in proceedings of 39th Liège International Astrophysical Colloquium "The multi-wavelength view of Hot, Massive Stars", Bulletin of the Royal Society of Sciences of Liège, 80, 170 pdf
      "The Mons campaign on OB stars"
    • Fahed et al. 2011, in proceedings of 39th Liège International Astrophysical Colloquium "The multi-wavelength view of Hot, Massive Stars", Bulletin of the Royal Society of Sciences of Liège, 80, 668 pdf
      "Spectroscopic follow-up of the colliding-wind binary WR 140 during the 2009 January periastron passage"
    • Morel 2011, in proceedings of 39th Liège International Astrophysical Colloquium "The multi-wavelength view of Hot, Massive Stars", Bulletin of the Royal Society of Sciences of Liège, 80, 405 pdf
      "Mixing in magnetic OB stars"
    • Damerdji et al. 2011, in proceedings of 39th Liège International Astrophysical Colloquium "The multi-wavelength view of Hot, Massive Stars", Bulletin of the Royal Society of Sciences of Liège, 80, 481 pdf
      "Spectroscopic binaries as observed by the future Gaia space mission"
    • Nazé et al. 2011, in proceedings of 39th Liège International Astrophysical Colloquium "The multi-wavelength view of Hot, Massive Stars", Bulletin of the Royal Society of Sciences of Liège, 80, 709 pdf
      "A first orbital solution for the non-thermal emitter Cyg OB2#9"
    • Katz et al. 2011, in proceedings of "Gaia: at the frontiers of astrometry", EAS Publications Series, 45, 189 pdf
      "Gaia spectroscopy: methods, performances and scientific returns"
    • Mahy et al. 2011, A&A, 525, A101 pdf
      "Plaskett's star: analysis of the CoRoT photometric data"
    • Hubrig et al. 2011, ApJL, 726, L5 pdf
      "First magnetic field models for recently discovered magnetic β Cephei and slowly pulsating B stars"
    • Pandey et al. 2011, CoAst, 162, 21 pdf
      "A spectroscopic study of the hybrid pulsator γ Pegasi"
    • Baudin et al. 2011, A&A, 529, A84 pdf
      "Amplitudes and lifetimes of solar-like oscillations observed by CoRoT - red-giant versus main-sequence stars"
    • Blomme et al. 2011, A&A, 533, A4 pdf
      "Variability in the CoRoT photometry of three O-type stars - HD 46223, HD 46150 and HD 46966"
    • Hubrig et al. 2011, A&A, 531, L204 pdf
      "The strong magnetic field of the large-amplitude β Cephei pulsator V1449 Aquilae"
    • Fahed et al. 2011, MNRAS, 418, 2 pdf
      "Spectroscopy of the archetype colliding-wind binary WR 140 during the 2009 January periastron passage"
    • Morel, Miglio & Valentini 2011, in "Stellar atmospheres in the Gaia era", JPhCS, 328, 012010 pdf
      "Using seismic targets as benchmarks for spectroscopic analyses of cool stars"
    • Gilmore et al. 2012, The Messenger, 147, 25 pdf
      "The Gaia-ESO public spectroscopic survey"
    • Morel & Miglio 2012, MNRAS, 419, L34 pdf
      "Assessing the accuracy of the gravity determination in late-type stars with solar-like pulsators"
    • Baudin et al. 2012, A&A, 538, A73 pdf
      "Modelling a high-mass red giant observed by CoRoT"
    • Miglio et al. 2012, EPJ Web of conferences, 19, 05012 pdf
      "Solar-like pulsating stars as distance indicators: G-K giants in the CoRoT and Kepler fields"
    • Salmon et al. 2012, MNRAS, 422, 3460 pdf
      "Testing the effect of the opacity and of the chemical mixture on the excitation of pulsations in Magellanic B stars"
    • Papics et al. 2012, A&A, 542, A55 pdf
      "Gravito-inertial and pressure modes detected in the B3 IV CoRoT target HD 43317"
    • Degroote et al. 2012, 542, A88 pdf
      "The CoRoT B-type binary HD 50230: a prototypical hybrid pulsator with g-mode period and p-mode frequency spacings"
    • Damerdji et al. 2012, IMCCE Proceedings, 71 pdf
      "Spectroscopic binary processing within Gaia DPAC"
    • Blomme et al. 2012, ASP Conf. Series, 465, 13 pdf
      "CoRoT observations of O stars: diverse origins of variability"
    • Morel 2012, ASP Conf. Series, 465, 54 pdf
      "Are magnetic OB stars more prone to mixing? Still an unsettled issue"
    • Fahed et al. 2012, ASP Conf. Series, 465, 372 pdf
      "2009: a colliding-wind odyssey"
    • Briquet et al. 2012, MNRAS, 427, 483 pdf
      "Multisite spectroscopic seismic study of the β Cep star V2052 Ophiuchi: inhibition of mixing by its magnetic field"
    • Rauw et al. 2012, A&A, 546, A77 pdf
      "The nature of the high Galactic latitude O-star HD 93521: new results from X-ray and optical spectroscopy"
    • Hubrig et al. 2012, ASP Conference Proceedings, 462, 307
      "First Magnetic Field Models for Recently Discovered Magnetic β Cephei and Slowly Pulsating B Stars"
    • Morel et al. 2013, EPJ Web of Conferences, 43, 03007 pdf
      "An abundance study of the red giants in the seismology fields of the CoRoT satellite"
    • Valentini et al. 2013, EPJ Web of Conferences, 43, 03006 pdf
      "GAUFRE: A tool for an automated determination of atmospheric parameters from spectroscopy"
    • Miglio et al. 2013, EPJ Web of Conferences, 43, 03004 pdf
      "Differential population studies using asteroseismology: solar-like oscillating giants in CoRoT fields LRc01 and LRa01"
    • Miglio et al. 2013, MNRAS, 429, 423 pdf
      "Galactic archaeology: mapping and dating stellar populations with asteroseismology of red-giant stars"
    • Thoul et al. 2013, A&A, 551, A12 pdf
      "High-precision CoRoT space photometry and fundamental parameter determination of the B2.5 V star HD 48977"
    • Morel et al. 2013, A&A, 552, A42 pdf
      "An abundance study of the solar-analogue, CoRoT targets HD 42618 and HD 43587 from HARPS spectroscopy"
    • Rauw et al. 2013, A&A, 555, L9 pdf
      "HD 45314: a new γ Cassiopeiae analog among Oe stars"
    • Barban et al. 2013, JPhCS, 440, 012030 pdf
      "Solar-like oscillations in distant stars as seen by CoRoT: the special case of HD 42618, a solar sister"
    • Morel et al. 2014, A&A, 561, A35 pdf
      "A search for pulsations in the HgMn star HD 45975 with CoRoT photometry and ground-based spectroscopy"
    • Barban et al. 2014, ASP Conf. Series, 478, 385
      "Observations of red giants in the cluster NGC 6633 by the space mission CoRoT and the HARPS and SOPHIE spectrographs"
    • Hubrig et al. 2014, A&A, 564, L10 pdf
      "B fields in OB stars (BOB): The discovery of a magnetic field in a multiple system in the Trifid nebula, one of the youngest star forming regions"
    • Boumier et al. 2014, A&A, 564, A34 pdf
      "Seismic analysis of HD 43587Aa, a solar-like oscillator in a quadruple system"
    • Morel et al. 2014, A&A, 564, A119 pdf
      "Atmospheric parameters and chemical properties of red giants in the CoRoT asteroseismology fields"
    • Rauer et al. 2014, Experimental Astronomy, 38, 249 pdf
      "The PLATO 2.0 Mission"
    • Smiljanic et al. 2014, A&A, 570, A122 pdf
      "Gaia-ESO Survey: the analysis of high-resolution UVES spectra of FGK-type stars"
    • Morel et al. 2014, The Messenger, 157, 27 pdf
      "The B fields in OB stars (BOB) survey"
    • Morel 2015, Astrophysics and Space Science Proceedings, 39, 73 pdf
      "Spectroscopic constraints for low-mass asteroseismic targets"
    • Poretti et al. 2015, Astrophysics and Space Science Proceedings, 39, 101 pdf
      "The red giants in NGC 6633 as seen with CoRoT, HARPS and SOPHIE"
    • Tautvaisiene et al. 2015, A&A, 573, A55 pdf
      "The Gaia-ESO Survey: CNO abundances in the open clusters Trumpler 20, NGC 4815, and NGC 6705"
    • Blomme et al. 2015, in Proc. IAUS 307, "New Windows on Massive Stars", 88 pdf
      "The Gaia-ESO survey and massive stars"
    • Cazorla et al. 2015, in Proc. IAUS 307: "New Windows on Massive Stars", 94 pdf
      "Chemical abundances of fast-rotating OB stars"
    • Semaan et al. 2015, in Proc. IAUS 307, : "New Windows on Massive Stars", 140 pdf
      "NGC 3293 revisited by the Gaia-ESO survey"
    • Morel et al. 2015, in Proc. IAUS 307: "New Windows on Massive Stars", 342 pdf
      "The B fields in OB stars (BOB) survey"
    • Morel 2015, in Proc. IAUS 307: "New Windows on Massive Stars", 451 pdf
      "Abundance study of two magnetic B-type stars in the Orion Nebula Cluster"
    • Fossati et al. 2015, A&A, 574, A20 pdf
      "B fields in OB stars (BOB): on the detection of weak magnetic fields in the two early B-type stars β CMa and ε CMa. Possible lack of a 'magnetic desert' in massive stars"
    • Rauw et al. 2015, A&A, 575, A99 pdf
      "Spectroscopic variability of two Oe stars"
    • Chiappini et al. 2015, A&A, 576, L12 pdf
      "Young [α/Fe]-enhanced stars discovered by CoRoT and APOGEE: What is their origin?"
    • Kholtygin et al. 2015, ASP Conf. Series 494, 79
      "The B fields in OB stars (BOB) survey"
    • Hubrig et al. 2015, A&A, 578, L3 pdf
      "B fields in OB stars (BOB): FORS2 spectropolarimetric follow-up of the two rare rigidly rotating magnetosphere stars HD 23478 and HD 345439"
    • Lagarde et al. 2015, A&A, 580, A141 pdf
      "Models of red giants in the CoRoT asteroseismology fields combining asteroseismic and spectroscopic constraints"
    • Castro et al. 2015, A&A, 581, A81 pdf
      "B fields in OB stars (BOB): detection of a strong magnetic field in the O9.7 V star HD 54879"
    • Fossati et al. 2015, A&A, 582, A49 pdf
      "B fields in OB stars (BOB): low-resolution FORS2 spectropolarimetry of the first sample of 50 massive stars"
    • Przybilla et al. 2016, A&A, 587, A7 pdf
      "B fields in OB stars (BOB): Detection of a magnetic field in the He-strong star CPD -57 3509"
    • Smiljanic et al. 2016, A&A, 589, A115 pdf
      "The Gaia-ESO Survey: sodium and aluminium abundances in giants and dwarfs -- Implications for stellar and chemical evolution"
    • Eversberg et al. 2016, in Proceedings of Potsdam Workshop on Wolf-Rayet Stars, 71 pdf
      "World-wide amateur observations - A viable future of massive star research"
    • Fossati et al. 2016, A&A, 592, A84 pdf
      "Evidence of magnetic field decay in massive main-sequence stars"
    • Delgado et al. 2016, MNRAS, 460, 3305 pdf
      "The Gaia-ESO Survey: pre-main-sequence stars in the young open cluster NGC 3293"
    • Casey et al. 2016, MNRAS, 461, 3336 pdf
      "The Gaia-ESO Survey: revisiting the Li-rich giant problem"
    • Gaia Collaboration 2016, A&A, 595, A1 pdf
      "The Gaia mission"
    • Gaia Collaboration 2016, A&A, 595, A2 pdf
      "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties"
    • Anders et al. 2017, A&A, 597, A30 pdf
      "Galactic archaeology with asteroseismology and spectroscopy: red giants observed by CoRoT and APOGEE"
    • Castro et al. 2017, A&A, 597, L6 pdf
      "B field in OB stars (BOB): The outstandingly strong magnetic field in the evolved He-strong star CPD -62 2124"
    • Pancino et al. 2017, A&A, 598, A5 pdf
      "The Gaia-ESO Survey: calibration strategy"
    • Schöller et al. 2017, A&A, 599, A66 pdf
      "B fields in OB stars (BOB): concluding the FORS2 observing campaign"
    • González et al. 2017, MNRAS, 467, 437 pdf
      "B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula"
    • Gaia Collaboration 2017, A&A, 601, A19 pdf
      "Gaia Data Release 1. Open cluster astrometry: performance, limitations, and future prospects"
    • Cazorla et al. 2017, A&A, 603, A56 pdf
      "Chemical abundances of fast-rotating massive stars I. Description of the methods and individual results"
    • Campante et al. 2017, MNRAS, 469, 1360 pdf
      "Weighing in on the masses of retired A stars with asteroseismology. K2 observations of the exoplanet-host star HD 212771"
    • Cazorla et al. 2017, A&A, 604, A123 pdf
      "Chemical abundances of fast-rotating massive stars II. Interpretation and comparison with evolutionary models"
    • Gaia Collaboration 2017, A&A, 605, A79 pdf
      "Gaia Data Release 1. Testing the parallaxes with local Cepheids and RR Lyrae stars"
    • Miglio et al. 2017, AN, 338, 644 pdf
      "PLATO as it is: a legacy mission for Galactic archaeology"
    • Morel 2018, A&A, 615, A172 pdf
      "The chemical composition of α Centauri AB revisited"
    • Gaia Collaboration 2018, A&A, 616, A1 pdf
      "Gaia Data Release 2. Summary of the contents and survey properties"
    • Sartoretti et al. 2018, A&A, 616, A6 pdf
      "Gaia Data Release 2 - Processing the spectroscopic data"
    • Gaia Collaboration 2018, A&A, 616, A10 pdf
      "Gaia Data Release 2. Observational Hertzsprung-Russell diagrams"
    • Gaia Collaboration 2018, A&A, 616, A11 pdf
      "Gaia Data Release 2. Mapping the Milky Way disc kinematics"
    • Gaia Collaboration 2018, A&A, 616, A12 pdf
      "Gaia Data Release 2. The kinematics of globular clusters and dwarf galaxies around the Milky Way"
    • Gaia Collaboration 2018, A&A, 616, A13 pdf
      "Gaia Data Release 2. Observations of Solar System Objects"
    • Gaia Collaboration 2018, A&A, 616, A14 pdf
      "Gaia Data Release 2. The celestial reference frame (Gaia-CRF2)"
    • Smiljanic et al. 2018, A&A, 617, A4 pdf
      "The Gaia-ESO Survey: properties of newly discovered Li-rich giants"
    • Katz et al. 2019, A&A, 622, A205 pdf
      "Gaia Data Release 2 - Properties and validation of the radial velocities"
    • Gaia Collaboration 2019, A&A, 623, A110 pdf
      "Gaia Data Release 2. Variable stars in the colour-absolute magnitude diagram"
    • Moździerski et al. 2018, in Proceedings of XXXVIII Polish Astronomical Society Meeting pdf
      "Variability survey in NGC 6910, the open cluster rich in β Cephei-type stars"
    • Moździerski et al. 2019, A&A, 632, A95 pdf
      "Ensemble asteroseismology of pulsating B-type stars in NGC 6910"
    • Chaplin et al. 2020, Nature Astronomy, 4, 382 pdf
      "Age dating of an early Milky Way merger via asteroseismology of the naked-eye star ν Indi"
    • Wang et al. 2020, A&A, 644, A19 pdf
      "Europium as a lodestar: diagnosis of radiogenic heat production in terrestrial exoplanets - Spectroscopic determination of Eu abundances in α Centauri AB"
    • Morel et al. 2021, A&A, 646, A78 pdf
      "Testing abundance-age relations beyond solar analogues with Kepler LEGACY stars"
    • Gaia Collaboration 2021, A&A, 649, A1 pdf
      "Gaia Early Data Release 3: Summary of the contents and survey properties"
    • Gaia Collaboration 2021, A&A, 649, A6 pdf
      "Gaia Early Data Release 3: The Gaia Catalogue of Nearby Stars"
    • Gaia Collaboration 2021, A&A, 649, A7 pdf
      "Gaia Early Data Release 3: Structure and properties of the Magellanic Clouds"
    • Gaia Collaboration 2021, A&A, 649, A8 pdf
      "Gaia Early Data Release 3: The Galactic anticentre"
    • Gaia Collaboration 2021, A&A, 649, A9 pdf
      "Gaia Early Data Release 3: Acceleration of the solar system from Gaia astrometry"
    • Castro et al. 2021, MNRAS, 505, 2151 pdf
      "Modeling of two CoRoT solar analogues constrained by seismic and spectroscopic analysis"
    • Gent et al. 2022, A&A, 658, A147 pdf
      "The SAPP pipeline for the determination of stellar abundances and atmospheric parameters of stars in the core program of the PLATO mission"
    • Wang et al. 2022, ApJ, 927, 134 pdf
      "A Model Earth-sized Planet in the Habitable Zone of α Centauri A/B"
    • Acuña et al. 2022, A&A, 660, A102 pdf
      "Water content trends in K2-138 and other low-mass multiplanetary systems"
    • Blomme et al. 2022, A&A, 661, A120 pdf
      "The Gaia-ESO Survey: The analysis of the hot-star spectra"
    • Morel et al. 2022, A&A, 665, A108 pdf
      "The Gaia-ESO survey: A spectroscopic study of the young open cluster NGC 3293"
    • Gilmore et al. 2022, A&A, 666, A120 pdf
      "The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products"
    • Randich et al. 2022, A&A, 666, A121 pdf
      "The Gaia-ESO Public Spectroscopic Survey: Implementation, data products, open cluster survey, science, and legacy"
    • Boulkaboul et al. 2022, MNRAS, 517, 1849 pdf
      "Analysis of Gaia radial-velocity standards: stability and new substellar companion candidates"
    • Morello et al. 2022, RNAAS, 6, 248 pdf
      "First Release of PLATO Consortium Stellar Limb-darkening Coefficients"
    • Gaia Collaboration 2022, A&A, 667, A148 pdf
      "Gaia Early Data Release 3: The celestial reference frame (Gaia-CRF3)"
    • Gaia Collaboration 2023, A&A, 674, A1 pdf
      "Gaia Data Release 3: Summary of the content and survey properties"
    • Gaia Collaboration 2023, A&A, 674, A33 pdf
      "Gaia Data Release 3: The Galaxy in your preferred colours: Synthetic photometry from Gaia low-resolution spectra"
    • Gaia Collaboration 2023, A&A, 674, A34 pdf
      "Gaia Data Release 3: Stellar multiplicity, a teaser for the hidden treasure"
    • Gaia Collaboration 2023, A&A, 674, A35 pdf
      "Gaia Data Release 3: Reflectance spectra of Solar System small bodies"
    • Gaia Collaboration 2023, A&A, 674, A36 pdf
      "Gaia Data Release 3: Pulsations in main sequence OBAF-type stars"
    • Gaia Collaboration 2023, A&A, 674, A37 pdf
      "Gaia Data Release 3: Mapping the asymmetric disc of the Milky Way"
    • Gaia Collaboration 2023, A&A, 674, A38 pdf
      "Gaia Data Release 3: Chemical cartography of the Milky Way"
    • Gaia Collaboration 2023, A&A, 674, A39 pdf
      "Gaia Data Release 3: A Golden Sample of Astrophysical Parameters"
    • Gaia Collaboration 2023, A&A, 674, A40 pdf
      "Gaia Data Release 3: Exploring and mapping the diffuse interstellar band at 862 nm"
    • Gaia Collaboration 2023, A&A, 674, A41 pdf
      "Gaia Data Release 3: The extragalactic content"
    • Hourihane et al. 2023, A&A, 676, A129 pdf
      "The Gaia-ESO Survey: Homogenisation of stellar parameters and elemental abundances"
    • Coelho et al. 2023, MNRAS, in press
      "Seismic and spectroscopic analysis of 9 bright red giants observed by Kepler"

    EXTRAGALACTIC ASTRONOMY

  • Discovery of a hyperluminous infrared galaxy in the course of the ELAIS (European Large Area ISO Survey) survey conducted by the ISO satellite (see figure). Phenomenon likely due to an extremely intense burst of star formation (see figure).

    RELATED PUBLICATIONS:
    • Oliver, et al. 2000, MNRAS, 316, 749 ps pdf
      "The European Large Area ISO Survey I: goals, definition and observations"
    • Serjeant, et al. 2001, MNRAS, 322, 262 ps pdf
      "The European Large Area ISO Survey IV: the preliminary 90 microns luminosity function"
    • Morel, et al. 2001, MNRAS, 327, 1187 ps pdf
      "The European Large Area ISO Survey VI: discovery of a new hyperluminous infrared galaxy"
    • Márquez, et al. 2001, in "The promise of FIRST", ESA SP-460, 147 ps pdf
      "Mid/Far-infrared properties of ELAIS sources"
    • Cabrera-Guerra, et al. 2001, in "The promise of FIRST", ESA SP-460, 369 ps pdf
      "Spectroscopic properties of new IR galaxies detected in the European Large Area ISO Survey"
    • Vaisanen, et al. 2002, MNRAS, 337, 1043 ps pdf
      "Near and mid-infrared colours of star-forming galaxies in European Large Area ISO Survey fields"
    • Vaisanen & Morel 2003, in "Exploiting the ISO data archive", ESA SP-511, 297 ps pdf
      "Infrared colours of star-forming galaxies and a flux calibration of ISOCAM ELAIS catalogues"
    • Rowan-Robinson, et al. 2004, MNRAS, 351, 1290 ps pdf
      "The European Large Area ISO Survey VII: The final band-merged catalogue"
    • Héraudeau, et al. 2004, MNRAS, 354, 924 ps pdf
      "The European Large Area ISO Survey VIII: 90 microns final analysis and source counts"

    SUPERNOVA REMNANTS

  • First infrared, line-emission survey of extragalactic supernova remnants (see figure): relation allowing the determination of the supernova rate of starburst galaxies solely based on their total [Fe II] 1.644 microns line luminosity.

    RELATED PUBLICATIONS:
    • Morel, et al. 2001, in: "The interstellar medium in M31 and M33", 131 ps pdf
      "A Near-infrared [Fe II] line-imaging survey of supernova remnants in M33"
    • Morel, et al. 2002, MNRAS, 329, 398 ps pdf
      "Near-infrared [Fe II] emission from supernova remnants and the supernova rate of starburst galaxies"

    MISCELLANEOUS

    • Dobrijevic, et al. 1993, BAAS, 25, 1080 ps pdf
      "Study of Transmitted Light Through Neptune's Atmosphere"
    • St-Louis, et al. 1999, in Proc. IAU 193: "Wolf-Rayet phenomena in massive stars and starburst galaxies", 392 ps pdf
      "Molecular and atomic hydrogen in the environment of hot, massive stars"
    • Jaunsen, et al. 2007, GCN Circular #6921 ps pdf
      "GRB 070920A: deep optical observations at the NOT"
    • Viala, et al. 2008, in Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, 51 pdf
      "Radial velocities with the Gaia RVS spectrometer"
    • Fahed et al. 2011, in proceedings of international ProAm workshop 'Stellar winds in interaction'pdf
      "The WR 140 periastron passage 2009: first results from MONS and other optical sources"
    • Hekker et al. 2011, in proceedings of second CoRoT symposium pdf
      "Investigation of three red giants observed in the CoRoT seismo field"
    • Bergemann et al. 2019 pdf
      "Stellar Astrophysics and Exoplanet Science with the Maunakea Spectroscopic Explorer (MSE)"
    • The MSE Science Team 2019 pdf
      "The Detailed Science Case for the Maunakea Spectroscopic Explorer, 2019 edition"
    • Acuña et al. 2021, in Proceedings of SF2A-2021 pdf
      "Characterising the interior structures and atmospheres of multiplanetary systems"