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| author | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-03-04 21:21:30 -0500 |
|---|---|---|
| committer | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-03-04 21:21:30 -0500 |
| commit | d54fe7c1f704a63824c5bfa0ece65245572e9b27 (patch) | |
| tree | afc52015ffc2c74e0266653eecef1c8ef8ba5d91 /src/slalib/sun67.htx/node173.html | |
| download | calfuse-d54fe7c1f704a63824c5bfa0ece65245572e9b27.tar.gz | |
Initial commit
Diffstat (limited to 'src/slalib/sun67.htx/node173.html')
| -rw-r--r-- | src/slalib/sun67.htx/node173.html | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/slalib/sun67.htx/node173.html b/src/slalib/sun67.htx/node173.html new file mode 100644 index 0000000..2ae01da --- /dev/null +++ b/src/slalib/sun67.htx/node173.html @@ -0,0 +1,121 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<!--Converted with LaTeX2HTML 97.1 (release) (July 13th, 1997) + 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 Lippman, Marek Rouchal, Martin Wilck and others --> +<HTML> +<HEAD> +<TITLE>SLA_RVLSRD - RV Corrn to Dynamical LSR</TITLE> +<META NAME="description" CONTENT="SLA_RVLSRD - RV Corrn to Dynamical LSR"> +<META NAME="keywords" CONTENT="sun67"> +<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="sun67.css"> +<LINK REL="next" HREF="node174.html"> +<LINK REL="previous" HREF="node172.html"> +<LINK REL="up" HREF="node13.html"> +<LINK REL="next" HREF="node174.html"> +</HEAD> +<BODY > +<BR> <HR> +<A NAME="tex2html2156" HREF="node174.html"> +<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next_motif.gif"></A> +<A NAME="tex2html2154" HREF="node13.html"> +<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up_motif.gif"></A> +<A NAME="tex2html2148" HREF="node172.html"> +<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="previous_motif.gif"></A> <A HREF="sun67.html#stardoccontents"><IMG ALIGN="BOTTOM" BORDER="0" + SRC="contents_motif.gif"></A> +<BR> +<B> Next:</B> <A NAME="tex2html2157" HREF="node174.html">SLA_RVLSRK - RV Corrn to Kinematical LSR</A> +<BR> +<B>Up:</B> <A NAME="tex2html2155" HREF="node13.html">SUBPROGRAM SPECIFICATIONS</A> +<BR> +<B> Previous:</B> <A NAME="tex2html2149" HREF="node172.html">SLA_RVLG - RV Corrn to Local Group</A> +<BR> <HR> <P> +<P><!--End of Navigation Panel--> +<H2><A NAME="SECTION0004160000000000000000">SLA_RVLSRD - RV Corrn to Dynamical LSR</A> +<A NAME="xref_SLA_RVLSRD"> </A><A NAME="SLA_RVLSRD"> </A> +</H2> + <DL> +<DT><STRONG>ACTION:</STRONG> +<DD>Velocity component in a given direction due to the Sun's +motion with respect to the ``dynamical'' Local Standard of Rest. +<P> <DT><STRONG>CALL:</STRONG> +<DD><TT>R = sla_RVLSRD (R2000, D2000)</TT> +<P> </DL> +<P> <DL> +<DT><STRONG>GIVEN:</STRONG> +<DD> +<BR> +<TABLE CELLPADDING=3> +<TR VALIGN="TOP"><TD ALIGN="LEFT"><EM>R2000,D2000</EM></TD> +<TH ALIGN="LEFT"><B>R</B></TH> +<TD ALIGN="LEFT" NOWRAP>J2000.0 mean <IMG WIDTH="42" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" + SRC="img3.gif" + ALT="$[\,\alpha,\delta\,]$"> (radians)</TD> +</TR> +</TABLE></DL> +<P> <DL> +<DT><STRONG>RETURNED:</STRONG> +<DD> +<BR> +<TABLE CELLPADDING=3> +<TR VALIGN="TOP"><TD ALIGN="LEFT"><EM>sla_RVLSRD</EM></TD> +<TH ALIGN="LEFT"><B>R</B></TH> +<TH ALIGN="LEFT" NOWRAP>Component of <I>peculiar</I> solar motion +in direction R2000,D2000 (km s<SUP>-1</SUP>)</TH> +</TR> +</TABLE></DL> +<P> <DL> +<DT><STRONG>NOTES:</STRONG> +<DD><DL COMPACT> +<DT>1. +<DD>Sign convention: the result is positive when +the Sun is receding from the given point on the sky. +<DT>2. +<DD>The Local Standard of Rest used here is the <I>dynamical</I> LSR, + a point in the vicinity of the Sun which is in a circular + orbit around the Galactic centre. The Sun's motion with + respect to the dynamical LSR is called the <I>peculiar</I> solar + motion. + <DT>3. +<DD>There is another type of LSR, called a <I>kinematical</I> LSR. A + kinematical LSR is the mean standard of rest of specified star + catalogues or stellar populations, and several slightly + different kinematical LSRs are in use. The Sun's motion with + respect to an agreed kinematical LSR is known as the + <I>standard</I> solar motion. + The dynamical LSR is seldom used by observational astronomers, + who conventionally use a kinematical LSR such as the one implemented + in the routine sla_RVLSRK. + <DT>4. +<DD>The peculiar solar motion is from Delhaye (1965), in <I>Stars + and Stellar Systems</I>, vol 5, p73: in Galactic Cartesian + coordinates (+9,+12,+7) km s<SUP>-1</SUP>. + This corresponds to about 16.6 km s<SUP>-1</SUP> + towards Galactic coordinates <IMG WIDTH="148" HEIGHT="32" ALIGN="MIDDLE" BORDER="0" + SRC="img224.gif" + ALT="$l^{I\!I}=53^{\circ},b^{I\!I}=+25^{\circ}$">. </DL></DL> +<BR> <HR> +<A NAME="tex2html2156" HREF="node174.html"> +<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next_motif.gif"></A> +<A NAME="tex2html2154" HREF="node13.html"> +<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up_motif.gif"></A> +<A NAME="tex2html2148" HREF="node172.html"> +<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="previous_motif.gif"></A> <A HREF="sun67.html#stardoccontents"><IMG ALIGN="BOTTOM" BORDER="0" + SRC="contents_motif.gif"></A> +<BR> +<B> Next:</B> <A NAME="tex2html2157" HREF="node174.html">SLA_RVLSRK - RV Corrn to Kinematical LSR</A> +<BR> +<B>Up:</B> <A NAME="tex2html2155" HREF="node13.html">SUBPROGRAM SPECIFICATIONS</A> +<BR> +<B> Previous:</B> <A NAME="tex2html2149" HREF="node172.html">SLA_RVLG - RV Corrn to Local Group</A> +<BR> <HR> <P> +<P><!--End of Navigation Panel--> +<ADDRESS> +<I>SLALIB --- Positional Astronomy Library<BR>Starlink User Note 67<BR>P. T. Wallace<BR>12 October 1999<BR>E-mail:ptw@star.rl.ac.uk</I> +</ADDRESS> +</BODY> +</HTML> |