1.6k citations · 13.9k across the 136 of their papers we have counts for
10 papers · 1 filter
Stellar Archaeology: a Keck Pilot Program on Extremely Metal- Poor Stars From the Hamburg/ESO Survey. III. The Lead (Pb) Star HE 0024-2523
Sara Lucatello, Raffaele Gratton, Judith G. Cohen +4
We present a detailed abundance analysis, including spectral syntheses, of a very metal-poor ([Fe/H]= -2.7), peculiar main sequence star, HE0024-2523 detected during the course of…
Abundances in Stars from the Red Giant Branch Tip to Near the Main Sequence Turn Off in M5
Solange V. Ramirez, Judith G. Cohen
We present the iron abundance and abundance ratios for 18 elements with respect to Fe in a sample of stars with a wide range in luminosity from luminous giants to stars near the tu…
The Deep Lens Survey
D. Wittman, J. A. Tyson, I. P. Dell'Antonio +19
The Deep Lens Survey (DLS) is a deep BVRz' imaging survey of seven 2x2 degree fields, with all data to be made public. The primary scientific driver is weak gravitational lensing,…
Carbon Abundances of Faint Stars in M13 - Evidence for Two Abundance Altering Mechanisms
Michael M. Briley, Judith G. Cohen, Peter B. Stetson
We present an analysis of CH band strengths in Keck LRIS spectra of a sample of 81 stars in M13 within 2 magnitudes of the main-sequence turnoff. The subgiants clearly exhibit a su…
The Redshift of the Lensed Object in the Einstein Ring B0218+357
Judith G. Cohen, Charles R. Lawrence, Roger D. Blandford
We present a secure redshift of z=0.944\pm0.002 for the lensed object in the Einstein ring gravitational lens B0218+357 based on five broad emission lines, in good agreement with o…
Star Formation in the Hubble Deep Field North
Judith G. Cohen
I am currently analyzing the emission line spectra of the approximately 600 galaxies from the sample of Cohen et al. (2000) and Cohen (2001) in the region of the HDF-North with z<1…