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GALEX UV Color-Magnitude Relations and Evidence for Recent Star Formation in Early-type Galaxies
S Yi, SJ Yoon, S Kaviraj +32
We have used the GALEX UV photometric data to construct a first near-ultraviolet (NUV) color-magnitude relation (CMR) for the galaxies pre-classified as early-type by SDSS studies.…
GALEX Ultraviolet Photometry of Globular Clusters in M31
S. -C. Rey, R. M. Rich, Y. -W. Lee +27
We present ultraviolet photometry for globular clusters (GCs) in M31 from 15 square deg of imaging using the Galaxy Evolution Explorer (GALEX). We detect 200 and 94 GCs with certai…
The Look-back Time Evolution of Far-UV Flux from Elliptical Galaxies: The Fornax Cluster and Abell 2670
Y. -W. Lee, C. H. Ree, R. M. Rich +30
In order to investigate the origin of the far-UV (FUV) flux from the early-type galaxies, Galaxy Evolution Explorer (GALEX) is collecting the UV data for the elliptical-rich cluste…
Large-Amplitude Ultraviolet Variations in the RR Lyrae Star ROTSE-I J143753.84+345924.8
J. M. Wheatley, B. Y. Welsh, O. H. W. Siegmund +22
The NASA Galaxy Evolution Explorer (GALEX) satellite has obtained simultaneous near and far ultraviolet light curves of the ROTSE-I Catalog RR Lyrae ab-type variable star J143753.8…
Y2 Isochrones with an Improved Core Overshoot
Pierre Demarque, Jong-Hak Woo, Yong-Cheol Kim +1
Convective core overshoot affects stellar evolution rates and the dating of stellar populations. In this paper, we provide a patch to the isochrones with an improved treatmen…
On the globular cluster formation history of NGC 5128
S. Kaviraj, I. Ferreras, S. -J. Yoon +1
We deduce the globular cluster formation history of the nearby elliptical NGC 5128 by using a phenomenological chemical enrichment model to reproduce its observed metallicity distr…