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Faint COSMOS AGN at z~3.3 - I. Black Hole Properties and Constraints on Early Black Hole Growth
Benny Trakhtenbrot, Francesca Civano, C. Megan Urry +9
We present new Keck/MOSFIRE K-band spectroscopy for a sample of 14 faint, X-ray-selected active galactic nuclei (AGNs) in the COSMOS field. The data cover the spectral region surro…
Rest-UV Absorption Lines as Metallicity Estimator: the Metal Content of Star-Forming Galaxies at z~5
A. L. Faisst, P. L. Capak, I. Davidzon +12
We measure a relation between the depth of four prominent rest-UV absorption complexes and metallicity for local galaxies and verify it up to z~3. We then apply this relation to a…
An extremely young massive clump forming by gravitational collapse in a primordial galaxy
A. Zanella, E. Daddi, E. Le Floc'h +9
When the cosmic star formation history peaks (z ~ 2), galaxies vigorously fed by cosmic reservoirs are gas dominated and contain massive star-forming clumps, thought to form by vio…
A higher efficiency of converting gas to stars push galaxies at z ~ 1.6 well above the star-forming main sequence
J. D. Silverman, E. Daddi, G. Rodighiero +18
Local starbursts have a higher efficiency of converting gas into stars, as compared to typical star-forming galaxies at a given stellar mass, possibly indicative of different modes…
Evidence for Mature Bulges and an Inside-out Quenching Phase 3 Billion Years After the Big Bang
S. Tacchella, C. M. Carollo, A. Renzini +14
Most present-day galaxies with stellar masses solar masses show no ongoing star formation and are dense spheroids. Ten billion years ago, similarly massive galaxies w…
A direct constraint on the gas content of a massive, passively evolving elliptical galaxy at z = 1.43
Mark T. Sargent, E. Daddi, F. Bournaud +6
Gas and dust in star-forming galaxies at the peak epoch of galaxy assembly are presently the topic of intense study, but little is known about the interstellar medium (ISM) of dist…