<!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>Optional stellar data</TITLE> <META NAME="description" CONTENT="Optional stellar data"> <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="next" HREF="node565.html"> <LINK REL="previous" HREF="node555.html"> <LINK REL="up" HREF="node554.html"> <LINK REL="next" HREF="node561.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html8526" HREF="node561.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html8523" HREF="node554.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html8517" HREF="node559.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html8525" 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="tex2html8527" HREF="node561.html">Proper motions</A> <B> Up:</B> <A NAME="tex2html8524" HREF="node554.html">Star tables</A> <B> Previous:</B> <A NAME="tex2html8518" HREF="node559.html">Equinox</A> <BR> <BR> <!--End of Navigation Panel--> <H2><A NAME="SECTION003222000000000000000"> Optional stellar data</A> </H2> In addition to the essential stellar data given in the previous subsection, it can be very useful to include supplemental information. For example, a program devoted to nearby dwarfs or low-luminosity stars would need proper motions to obtain accurate airmasses for some program stars. Spectral types are often adjoined to photometric catalog data. In many cases, rough photometric information that can aid in identification is available, such as a photographic magnitude from the HD. Finally, comments can be useful. These fields may be included in the table if the user wants them. They are described <I>below</I> the line in Table <A HREF="node559.html#tbl:star-cat-cols">I.1</A>. <P> <BR><HR> <!--Table of Child-Links--> <A NAME="CHILD_LINKS"> </A> <UL> <LI><A NAME="tex2html8528" HREF="node561.html">Proper motions</A> <LI><A NAME="tex2html8529" HREF="node562.html">Spectral types</A> <LI><A NAME="tex2html8530" HREF="node563.html">Rough magnitudes</A> <LI><A NAME="tex2html8531" HREF="node564.html">Comment column</A> </UL> <!--End of Table of Child-Links--> <BR><HR> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>
