ASTR-3415 Course Project Web Home Page

This web page contains the links of the various files needed to complete the course project for ASTR-3415 Astrophysics. Most of the files here are in standard ASCII (text) format and should be downloaded by double clicking on the link. Once you click on the file link, the text will appear in your browser. Just highlight all of the text with your mouse/cursor in the browser and select the "Copy" menu item after clicking the right mouse button. Then open a new text file on your Linux computer with the Emacs editor, move the mouse cursor to the Emacs window, select the right mouse button and click the "Paste" menu item. Then save your new file to whatever the name of the file is as written on the web page. The other files that can be downloaded are in two different formats: PDF (Portable Document Format) (which requires Acrobat Reader to view) or in Postscript (*.ps) and Encapsulated Postscript (*.eps) format (which you will need Ghostscript to view on your computer display).

Course Project Overview

Your Computer Class Project for ASTR-3415 Astrophysics will involve analyzing synthetic spectra generated by the ATLAS LTE stellar atmospheres code originally written by Dr. Robert Kurucz of the Center for Astrophysics at Harvard University (see Kurucz 1979, Astrophysical Journal Supplement, volume 40, page 1 for details on the ATLAS code). To assist you in your analysis, I have written an IDL software package called atanalyze.pro. This routine will have the capabilities of calculating continuum fluxes, line fluxes, integrated line fluxes, full-width at half-maximas (FWHM), and equivalent widths of select absorption lines built into the code from the synthetic spectra. A full description of the project is given in the compproj files. A sample LaTeX file (a3415rep.tex) can be downloaded and used as a template for your project's manuscript. This LaTeX file requires the a3415fig1.eps figure file to be downloaded too. The a3415rep.pdf files contain the compiled versions of this LaTeX file.

Files to Download

Download the following files to a subdirectory where you wish to carry out this project. Double click on each of the files listed. Note that the model files are all rather large in size. The synthetic spectrum (.spc) files are 184.6 KB in size, the opacity (.opc) files are 662.5 KB in size, and the long output (/out) files are 1.113 MB in size. In the file listings below, the Run parameters are effective temperature/log surface gravity/metalicity. The files that end with ".1" are the solar metalicity runs (1.00), those that end in ".2" have 1% solar metalicity (0.01), and those with ".3" as a file suffix have 0.01% solar metalicity (0.0001).

Note that the IDL procedures are written under IDL Version 4.0. They have been tested under Version 5.5 and work fine in that environment. Should you be using any version of IDL earlier than V5.2, you will need to contact me for copies of the "DIALOG" procedures which were added to IDL in Version 5.2. I have V4.0 versions of these functions.

ATLAS Run Models

m4000g10.opc.1 :	Opacity file for Run: 4000/1.0/1.00
m4000g10.out.1 :	Long output file for Run: 4000/1.0/1.00
m4000g10.spc.1 :	Synthetic spectrum file for Run: 4000/1.0/1.00
m4000g10.opc.2 :	Opacity file for Run: 4000/1.0/0.01
m4000g10.out.2 :	Long output file for Run: 4000/1.0/0.01
m4000g10.spc.2 :	Synthetic spectrum file for Run: 4000/1.0/0.01
m4000g10.opc.3 :	Opacity file for Run: 4000/1.0/0.0001
m4000g10.out.3 :	Long output file for Run: 4000/1.0/0.0001
m4000g10.spc.3 :	Synthetic spectrum file for Run: 4000/1.0/0.0001
m4000g45.opc.1 :	Opacity file for Run: 4000/4.5/1.00
m4000g45.out.1 :	Long output file for Run: 4000/4.5/1.00
m4000g45.spc.1 :	Synthetic spectrum file for Run: 4000/4.5/1.00
m4000g45.opc.2 :	Opacity file for Run: 4000/4.5/0.01
m4000g45.out.2 :	Long output file for Run: 4000/4.5/0.01
m4000g45.spc.2 :	Synthetic spectrum file for Run: 4000/4.5/0.01
m4000g45.opc.3 :	Opacity file for Run: 4000/4.5/0.0001
m4000g45.out.3 :	Long output file for Run: 4000/4.5/0.0001
m4000g45.spc.3 :	Synthetic spectrum file for Run: 4000/4.5/0.0001
m7000g45.opc.1 :	Opacity file for Run: 7000/4.5/1.00
m7000g45.out.1 :	Long output file for Run: 7000/4.5/1.00
m7000g45.spc.1 :	Synthetic spectrum file for Run: 7000/4.5/1.00
m7000g45.opc.2 :	Opacity file for Run: 7000/4.5/0.01
m7000g45.out.2 :	Long output file for Run: 7000/4.5/0.01
m7000g45.spc.2 :	Synthetic spectrum file for Run: 7000/4.5/0.01
m7000g45.opc.3 :	Opacity file for Run: 7000/4.5/0.0001
m7000g45.out.3 :	Long output file for Run: 7000/4.5/0.0001
m7000g45.spc.3 :	Synthetic spectrum file for Run: 7000/4.5/0.0001

IDL Procedures

atanalyze.pro :	IDL analysis package
air2vac.pro :	Convert air wavelengths to vacuum wavelengths.
axiscale.pro :	Create scale factors and labels for the plots. Called by atanalyze.pro.
vac2air.pro :	Convert vacuum wavelengths to air wavelengths. Called by atanalyze.pro.
valid_num.pro :	Make sure a string is an actual number. Called by atanalyze.pro.

Additional Files

a3415rep.tex :	A sample LaTeX file (written in LaTeX2e).
a3415fig1.eps :	An encapsulated postscript file used in a3415rep.tex.
a3415rep.pdf :	PDF output of the a3415rep.tex file.
a3415rep.ps :	Postscript output of the a3415rep.tex file.
compproj.pdf :	PDF version of the Course Project Instructions.
compproj.ps :	Postscript version of the Course Project Instructions.

Click here to go back to the Astrophysics home page.
Click here to go to Dr. Luttermoser's current courses page.
Click here to go to the Department of Physics and Astronomy homepage.

Last modified: April 15, 2019 by D.G. Luttermoser