README:  October 26, 2016

 Data from:

 Globular Cluster Abundances from High-Resolution, Integrated-Light Spectroscopy.
 II. Expanding the Metallicity Range for Old Clusters and Updated Analysis Techniques (Astrophysical Journal)

 J. E. Colucci, R. A. Bernstein, A. McWilliam, Observatories of the Carnegie Institution for Science



This repository contains reduced globular cluster integrated light echelle spectra in IRAF readable format. 
NOTE:  Spectra are *not* flux calibrated or doppler corrected. Sky/Background emission and absorption lines 
are present. See reference paper for data reduction details.

For each globular cluster:
 
 1.  *Approximately* normalized spectra are found in files ending with "ils_normalized.fits."  The echelle
 blaze function normalization was performed with an order by order fit to spectra of a reference G-type star.

 2. Unnormalized spectra are found in files ending with "ils.fits." These spectra are not flux calibrated so do not
 use the count values in each order for science purposes. 


Spectra for the globular clusters NGC 104, NGC 362, NGC 2808, NGC 6093, NGC 6397, NGC 6752 were 
taken with the DuPont telescope.  A reference star spectrum associated with the DuPont data is included : hr914_std.fits

Spectra for the globular clusters NGC 6388, NGC 6440, NGC 6441, NGC 6528, NGC 6553 were taken with the 
MIKE spectrograph on Magellan Clay.  A reference star spectrum associated with this data is included: ltt9239_std.fits

Spectra for the globular cluster Fornax 3 was taken with the MIKE spectrograph on Magellan Clay on a different run. 
A reference star spectrum associated with this data is included: hd033771_std.fits

This research was supported by an NSF Astronomy and Astrophysics Postdoctoral Fellowship under award AST-1302710.