INSTRUCTIONS TO AUTHORS (LIAC99) All Authors should submit the text of their contribution(s) for the proceedings before September 15, 1999 in camera ready form: maximum 15 pages for an introductory reveiw and maximum 6 pages for a poster contribution. The figures should be pasted in place with great care, particularly concerning the alignment with the text. For the sake of homogeneity of the proceedings, the LOC asks the authors to use the LATEX facilities for the production of the different texts : a file, readme, and a specially designed template, liegecol.tex, are available by making an anonymous ftp on ftp.astro.ulg.ac.be (139.165.20.60). The files readme and liegecol.tex are in the subdirectory entitled coll96. So type : ftp ftp.astro.ulg.ac.be Name (...) : anonymous Password : (your E-mail address) ftp> cd coll99 ftp> get readme.txt ftp> get liegecol.tex ftp> bye LATEX is described in the book ``LATEX user's guide and reference manual'' by Leslie Lamport (Addison-Wesley Pub. Comp.). The paper to be used should be one sided, white, of good quality, din A4 (29.7cm x 21 cm) with well defined sizes of margins : top margin : 3 cm bottom margin : 2 cm right and left margins : 2 cm. The margin definitions are implementation dependent and the authors may have to adjust the values of the parameters \topmargin \oddsidemargin, \evensidemargin (both are necessarily set equal) in order to fulfill the above request. The pages should not be numbered (the default in the template). ********** Title, authors and affiliations should be clearly indicated as in the illustrative heading part of the template. No additional blank line should be included in the heading. A short abstract should be given immediately thereafter. When there is more than one author, we suggest to display the list of authors on two lines (one and one, two and one, two and two, three and two, etc...). The template illustrates the case of three authors (two and one). For the plain text, the characters should be of the roman type (LATEX default) with the exception of emphasized text which should be in italics ({\it in italics}). In particular, physical units should also be written in roman type. Mathematical symbols and formulae should be italicized. The contribution should be divided in sections, subsections and possibly subsubsections. The LATEX commands \section, \subsection, \subsubsection should be utilized (the numbering is automatic). ********** The LOC asks the authors to follow the typographical rules in use in the main international journals such as Astronomy and Astrophysics. A few points will be recalled : 1. Titles (particular request) The main title, subtitles, and all headings should be capitalized (i.e. : first letter in upper case), except for conjunctions, prepositions of less than 5 letters (e.g. on, of, by, and, or, but, from, with) and definite and indefinite articles (the, a, an). The first word must in any case be capitalized. Titles have no end punctuation. 2. Capitalization and non-capitalization (a) The following should always be capitalized : - Abbreviations and expressions in the text such as Fig(s)., Tables(s), Sect(s)., Chap(s)., Paper, Theorem, etc. but only when used with numbers, e.g. Fig. 3, Table 1, Paper III, Theorem 2. Please follow the special rules in Sect. 3 for referring to equations. (b) The following should not be capitalized : - The words figure(s), table(s), equation(s), theorem(s) in the text when used without an accompanying number. - Figure legends and table captions except for names, certain abbreviations, and the opening letter. 3. Abbreviation of words (a) The following should be abbreviated when they appear in running text followed by a number, unless they come at the beginning of a sentence : Chap., Sect., Fig., Eq.; e.g. The results are depicted in Fig. 5. Figure 9 reveals that... Equations should be referred with their respective number in parentheses, e.g. Eq. (14). The intervening blank should be coded as a LATEX ~ (wave) character to avoid undesired hyphenation. (b) If abbreviations of names or concepts are used throughout the article, they should be defined at first occurrence, e.g. zero age main sequence (ZAMS). If these names or concepts are also mentioned in the Abstract, they should be defined there as well. ********** Figures and tables can be inserted in the text wherever the authors find it necessary. The LATEX environment ``figure'' and ``table'' should be utilized as shown in the template. {Example} : \begin{table} \vspace{3.5cm} \caption{Results are ...} \end{table} \begin{figure} \vspace{5cm} \caption{Plot of ...} \end{figure} It is also possible to put two figures side by side. {Example} : \begin{figure} \vspace{5cm} \begin{minipage}{8 cm} \caption { ? ? ?} \end{minipage} \hfill \begin{minipage}{8 cm} \caption{ ? ? ?} \end{minipage} \end{figure} ********** The references should be coded as in Astron. and Astrophys. (see e.g. issue 299/1, July I, 1995; Section 1.13). In the text, the authors should write, for example, either Surdej et al. (1991) claimed that... or ... a claim already made in the literature (Surdej et al. 1991). In the reference section, all the authors'names and initials should be given, separated by commas; a comma terminates the list of authors; then should follow the year, the abbreviated journal name directly followed by the issue number, then the page number. The references should be listed in the appropriate order : - One author : list chronologically - Author + one co-author: alphabetically by co-author, then chronologically - Author + two or more co-authors : list chronologically. Several works by the same authors in the same year should be distinguished by the use of a, b, c, ... (Surdej 1991a; Surdej 1991b). The beginning of the reference environment is activated by a \beginrefer statement and ended by a \endrefer statement. Each reference should begin by a \refer.