RVSAO -- An IRAF package to obtain radial velocities from spectra The package RVSAO defined in this directory was developed by Doug Mink at the Harvard-Smithsonian Center for Astrophysics from the redshift package originally written by Gerard Kriss at Johns Hopkins University and modified significantly by Steve Levine at the University of Wisconsin. It obtains radial velocities and velocity dispersions using cross-correlation methods or emission line fits. It consists of five tasks: XCSAO, EMSAO, BCVCORR, SUMSPEC, and LINESPEC. If you have any problems, please contact Doug Mink, mink@cfa.harvard.edu. This package has not been tested on a VMS system. A task, RELEARN, has been provided to aid in updating parameters. Run it instead of UNLEARN to keep your current parameters settings while adding new parameters. After the Revision Notes, you will find installation instructions. A fairly complete description of this package has been published in the August 1998 issue of the Publications of the Astronomical Society of the Pacific. For further updates, see http://tdc-www.harvard.edu/iraf/rvsao/ *************************************************************************** 2.1b16 September 7, 1999 Write CDi_j as well as CDELT in SUMSPEC. Add gio.h dependencies in mkpkg. 2.1b15 August 18, 1999 When continuum is divided out in SUMSPEC, the new continuum is 1. A new option for cont_remove, "divzero", divides by the continuum and subtracts 1 so the spectrum can be cross-correlated. This is what "divide" did in version 2.0 and all previous 2.1 betas, but it is not what you want if you plan to compute equivalent widths. 2.1b14 July 29, 1999 Add tab table output option to XCSAO. In SUMSPEC, copy entire header if single file in and out, even if there are multiple spectra from that file. In SUMSPEC, normalize by dividing out the mean times an input constant. Add display with continuum subtracted to XCSAO. 2.1b13 July 23, 1999 Add tab table output option to EMSAO. Replace blank fields with underscore. 2.1b12 July 16, 1999 Fix bug so QPLOT can update spectrum headers in both XCSAO and EMSAO. If save_vel=yes and correlate or linefit =no the programs run in QPLOT mode, where nothing will be wriitten unless new fits or correlations are done. 2.1b11 June 30, 1999 Fix bug in XCSAO which caused template heliocentric velocity correction and header velocity to be ignored. In debug mode, note which needed parameters are missing when the heliocentric velocity correction cannot be computed. See the Revisions file for the earlier history of the software. *************************************************************************** To install this package in your local IRAF system, take the following steps: 1) The package is distributed as a tar archive; IRAF is distributed with a tar reader. The tar archive may be obtained by magnetic tape or anonymous ftp. For magnetic tape go to step [2] and when reading the tar archive simply mount the tape and use the tape device name for the archive name in step [4]. To obtain the package via ftp (assuming a UNIX computer): % ftp cfa-ftp.harvard.edu login: anonymous password: [your user name] ftp> cd pub/iraf ftp> get rvsao-2.1b.readme ftp> binary ftp> get rvsao-2.1b.tar.Z ftp> quit % ls -l -rw-r--r-- 1 mink xxxx xxx xx xx:xx rvsao-2.1b.readme -rw-r--r-- 1 mink xxxxxx xxx xx xx:xx rvsao-2.1b.tar.Z % 2) Create a directory to contain the RVSAO external package files. This directory should be outside the IRAF directory tree and must be owned by the IRAF account. In the following examples, this root directory is named usr1:[rvsao] (VMS) or /local/rvsao/ (UNIX). Make the appropriate file name substitutions for your site. 3) Log in as IRAF and edit the extern.pkg file in the hlib directory to define the package to the CL. From the IRAF account, outside the CL, you can move to this directory with the command: % cd $hlib Define the environment variable rvsao to be the pathname to the rvsao root directory. UNIX pathnames must be terminated with a '/'. Edit extern.pkg to include: reset rvsao = /rvsao-2.1/ task rvsao.pkg = rvsao$rvsao.cl or, to avoid conflicts with earlier versions or the IRAF rv package, reset r2rvsao = /rvsao-2.1/ task r2rvsao.pkg = rvsao$rvsao.cl Near the end of the hlib$extern.pkg file, update the definition of helpdb so it includes the rvsao help database, copying the syntax already used in the string. Add this line before the line containing a closing quote: ,rvsao$lib/helpdb.mip\ or, if using r2rvsao, ,r2rvsao$lib/helpdb2.mip\ 4) Add to hlib$clpackage.men the package description: rvsao - Radial velocity package from SAO or, if using r2rvsao, r2rvsao - Radial velocity package from SAO 5) Unpack the tar file into the RVSAO root directory. On a UNIX system, where ftpdir is the pathname of the directory into which the package was ftp'ed and rvsao is the RVSAO root directory: % cd $rvsao (or $r2rvsao) % cd .. % zcat $ftpdir/rvsao-2.1b.tar.Z | tar xvf - The archive file can be deleted once the package has been successfully installed. 6) Restart IRAF and "cd rvsao" or "cd r2rvsao". 7) Symbolically link the appropriate binary directory to bin. bin is originally linked to bin.generic for distribution. On a SPARCstation running SunOS 4.*, type cl> mkpkg sparc On a SPARCstation running Solaris 2.*, type cl> mkpkg ssun On a DEC Alpha running Digital Unix, type cl> mkpkg alpha On a PC running Linux, type cl> mkpkg linux For other architectures, make a directory of the proper bin.{arch} name, and link it to bin 8) Make the package by typing cl> mkpkg update >&spool The spool file should be reviewed upon completion to make sure there were no errors. 9) Up-to-date hypertext help is available on the World Wide Web at http://tdc-www.harvard.edu/iraf/rvsao/