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The effect of environment on the ultraviolet color-magnitude relation of early-type galaxies
(2007-12-01)
We use GALEX near-UV (NUV ) photometry of a sample of early-type galaxies selected in the SDSS (Sloan Digital Sky Survey) to study the UV color-magnitude relation (CMR). NUV - r color is an excellent tracer of even small ...
The look-back time evolution of far-ultraviolet flux from the brightest cluster elliptical galaxies at z <0.2
(2007-12-01)
We present the GALEXUV photometry of the elliptical galaxies in Abell clusters at moderate redshifts (z <0.2) for the study of the look-back time evolution of the UV upturn phenomenon. The brightest elliptical galaxies (M ...
UV-optical colors as probes of early-type galaxy evolution
(2007-12-01)
We have studied ∼2100 early-type galaxies in the SDSS DR3 which have been detected by the GALEX Medium Imaging Survey (MIS), in the redshift range O <z <0.1.1. Combining GALEXUV photometry with corollary optical data from ...
Recent star formation in high-redshift early-type galaxies : Insights from the rest-frame UV
(2007-06)
We combine deep UBV RIzJK photometry from the MUSYC survey with redshifts from the COMBO-17 survey to study the rest-frame ultraviolet (UV) properties of 674 high-redshift (0.5 <z <1) early-type galaxies, drawn from the ...
Galex-derived residual star formation history of elliptical galaxies
(EDP Sciences, 2007)
Bright early-type galaxies are still forming stars at low-level residual star formation (RSF) mode. The GALEX UV satellite has detected excessive UV flux in > 30% of our volume-limited sample of ∼10 galaxies. The RSF galaxy ...
Observational evidence for AGN feedback in early-type galaxies
(2007)
A major amendment in recent models of hierarchical galaxy formation is the inclusion of so-called active galactic nucleus (AGN) feedback. The energy input from an active central massive black hole is invoked to suppress ...