Online Materials needed for ASTR 4610, homework 4
You may find it useful to visit http://iraf.noao.edu
which documents iraf and has general iraf tutorials.
You will need to use several IRAF tasks in the onedspec
package, particularly SBANDS as in HW#2, SPLOT for
measuring redshifts, DEREDDEN for dereddening spectra,
and DOPCOR for correcting for redshift.
(LISTPIX with coordinates set to "world" can be used
to making data files to plot with sm. Remember, IRAF has help files!
Below are spectra of 11 bright "local" galaxies from
Storchi-Bergman, Calzetti, and Kinney.
You will need to visit NED which can be found at
http://nedwww.ipac.caltech.edu/ -- bookmark it!
You might find it useful to make extra plots that I
have not explicitly asked for. For instance, plotting
the band responses on top of plots of the various
spectra may help you understand what is happening
in color-color diagrams. Please turn these in
as well if they help illustrate your answers.
- FITS format spectra of 11 galaxies:
NGC 5253, and