<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <!--Converted with LaTeX2HTML 98.1p1 release (March 2nd, 1998) originally by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds * revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan * with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --> <HTML> <HEAD> <TITLE>Principle of the Program</TITLE> <META NAME="description" CONTENT="Principle of the Program"> <META NAME="keywords" CONTENT="vol2"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <LINK REL="STYLESHEET" HREF="vol2.css"> <LINK REL="previous" HREF="node177.html"> <LINK REL="up" HREF="node177.html"> <LINK REL="next" HREF="node179.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html3655" HREF="node179.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html3652" HREF="node177.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html3648" HREF="node177.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html3654" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="icons.gif/contents_motif.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html3656" HREF="node179.html">Astrophysical Context</A> <B> Up:</B> <A NAME="tex2html3653" HREF="node177.html">Introduction</A> <B> Previous:</B> <A NAME="tex2html3649" HREF="node177.html">Introduction</A> <BR> <BR> <!--End of Navigation Panel--> <H2><A NAME="SECTION001311000000000000000"> Principle of the Program</A> </H2> <P> <DL COMPACT> <DT>1. <DD>Creates a 1D image containing the continuum and possible emission lines. <DT>2. <DD>Induces absorption features on this image. <DT>3. <DD>Possibly, comparison of the resulting image with observations. According to the result, the user can then modify some of the input parameters and repeat the operation until the agreement is found to be satisfactory. </DL> <P> The package contains: <DIV ALIGN="CENTER"> <PRE><TT> 4 commands: <TT>CREATE/PSF</TT> : creation of the instrumental response <BR> <TT>COMPUTE/EMI</TT> : computation of the initial unabsorbed spectrum <BR> <TT>COMPUTE/ABS</TT> : main program, computation of the theoretical <BR> absorption spectrum. <BR> <TT>TUTORIAL/CLOUD</TT> : on line tutorial <BR> <BR> 3 tables: <TT>EMI</TT> : contains the emission line parameters <BR> <TT>ABSP</TT> : contains the atomic data <BR> <TT>ABSC</TT> : contains the absorption line parameters <BR> (cloud model) <BR> 4 keywords <TT>CLDDIM</TT> :) <BR> <TT>CLDZ</TT> :) monitor several parameters or options <BR> <TT>CLDCT</TT> :) common to the 3 commands <BR> <TT>CLDOP</TT> :) <BR> </TT></PRE></DIV> <BR><HR> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>
