Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21733540m&link_type=abstract
American Astronomical Society, AAS Meeting #217, #335.40; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
We present new measures of the 0.2 < z < 1.3 evolution of scaling relations between stellar mass, magnitude, rotational velocity, and disk size for a diverse sample of 140 disk-like galaxies using deep spectra from the DEIMOS instrument on the Keck II 10 m telescope, combined with stellar masses derived from multi-color HST ACS and ground-based K-band imaging. An unique feature of our survey is our extended spectroscopic integrations (6-8 hours in most cases), which have led to significant improvements in determining the rotational velocities compared to previous work. Over 80% of our rotation curves are traced to their flattening radii, and we model the HST resolved bulge and disk components of each galaxy in order to improve the accuracy of our velocity measurements. From the context of popular assembly models, we analyze and discuss the observed trends in our scaling relations in order to construct a clearer picture of the intermediate redshift evolution of disk galaxies.
Bundy Kevin
Ellis Richard
Miller Sarah
Sullivan Mark
Treu Tommaso
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