6 papers
Chemical Abundance Inhomogeneities in Globular Cluster Stars
Judith G. Cohen
It is now clear that abundance variations from star-to-star among the light elements, particularly C, N, O, Na and Al, are ubiquitous within galactic globular clusters; they appear…
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…
Abundances in Stars from the Red Giant Branch Tip to the Near the Main Sequence Turn Off in M71: III. O, Na, Si, Ca, Ti, Cr, & Ni
Solange V. Ramirez, Judith G. Cohen
This paper was heavily modified and resubmitted as astro-ph/0111572.
RX J0911+05: A Massive Cluster Lens at z=0.769
Jean-Paul Kneib, Judith G. Cohen, Jens Hjorth
We report the detection of a massive high-redshift cluster of galaxies near the quadruple quasar RX J0911+05, using the LRIS instrument on the Keck-II telescope. The cluster is fou…
Clustering in the Caltech Faint Galaxy Redshift Survey
Judith G. Cohen
The Caltech Faint Galaxy Redshift Survey has collected 2000 spectra taken with multi-slit masks using the Low Resolution Imaging Spectrograph at the Keck Observatory (Oke et…
The Extremely Red Objects Found Thus Far in the Caltech Faint Galaxy Redshift Survey
Judith G. Cohen, David W. Hogg, Roger Blandford +2
We discuss the very red objects found in the first field of the Caltech Faint Galaxy Redshift Survey, for which the observations and analysis are now complete. In this field, which…