811 citations · 5k across the 72 of their papers we have counts for
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Compact stellar systems in the Fornax cluster: a UV perspective
Steffen Mieske, Michael Hilker, Dominik J. Bomans +4
In recent years, increasing evidence for chemical complexity and multiple stellar populations in massive globular clusters (GCs) has emerged, including extreme horizontal branches…
RACE-OC Project: Rotation and variability in the open cluster NGC2099 (M37)
S. Messina, E. Distefano, Padmakar Parihar +4
Rotation and solar-type magnetic activity are closely related to each other in stars of G or later spectral types. Presence and level of magnetic activity depend on star's rotation…
The Globular Cluster System of M60 (NGC 4649). II. Kinematics of the Globular Cluster System
Ho Seong Hwang, Myung Gyoon Lee, Hong Soo Park +7
We present a kinematic analysis of the globular cluster (GC) system in the giant elliptical galaxy (gE) M60 in the Virgo cluster. Using the photometric and spectroscopic database o…
The Globular Cluster System of M60 (NGC 4649). I. CFHT MOS Spectroscopy and Database
Myung Gyoon Lee, Ho Seong Hwang, Hong Soo Park +7
We present the measurement of radial velocities for globular clusters in M60, giant elliptical galaxy in the Virgo cluster. Target globular cluster candidates were selected using t…
Variable stars in the Open Cluster M11 (NGC 6705)
J. -R. Koo, S. -L. Kim, S. -C. Rey +4
V-band time-series CCD photometric observations of the intermediate-age open cluster M11 were performed to search for variable stars. Using these time-series data, we carefully exa…
The Look-back Time Evolution of Far-Ultraviolet Flux from the Brightest Cluster Elliptical Galaxies at z < 0.2
Chang H. Ree, Young-Wook Lee, Sukyoung K. Yi +28
We present the GALEX UV 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 pheno…
Variable Stars in the Open Cluster NGC 2099 (M37)
Y. B. Kang, S. -L. Kim, S. -C. Rey +4
Time-series CCD photometric observations of the intermediate-age open cluster NGC 2099 were performed to search for variable stars. We also carried out BV photometry to study physi…
GALEX Ultraviolet Photometry of Globular Clusters in M31: Three Year Results and a Catalog
Soo-Chang Rey, R. Michael Rich, Sangmo T. Sohn +23
We present ultraviolet (UV) photometry of M31 globular clusters (GCs) found in 23 Galaxy Evolution Explorer (GALEX) images covering the entirety of M31. We detect 485 and 273 GCs (…
Statistical Properties of the GALEX/SDSS matched source catalogs, and classification of the UV sources
Luciana Bianchi, Lino Rodriguez-Merino, Maurice Viton +30
We use the Galaxy Evolution Explorer (GALEX) Medium and All-Sky-Imaging Survey (MIS & AIS) data from the first public data release (GR1), matched to the Sloan Digital Sky Survey (S…
The GALEX Ultraviolet Atlas of Nearby Galaxies
A. Gil de Paz, S. Boissier, B. F. Madore +23
We present images, integrated photometry, surface-brightness and color profiles for a total of 1034 nearby galaxies recently observed by the GALEX satellite in its far-ultraviolet…
Better age estimations using UV-optical colours: breaking the age-metallicity degeneracy
S. Kaviraj, S. -C. Rey, R. M. Rich +3
We demonstrate that the combination of GALEX UV photometry in the FUV (~1530 angstroms) and NUV (~2310 angstroms) passbands with optical photometry in the standard U,B,V,R,I filter…
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…
Panoramic GALEX FUV and NUV imaging of M31 and M33
D. A. Thilker, C. G. Hoopes, L. Bianchi +25
We present Galaxy Evolution Explorer (GALEX) far-UV and near-UV mosaic observations covering the entirety of M31 and M33. For both targets, we measure the decline of surface bright…
CCD Photometry of the Globular Cluster omega Centauri. II. Stellar Populations and Age-Metallicity Relation
S. -C. Rey, Y. -W. Lee, C. Ree +3
We present wide-field and high-precision BV and Ca & Stromgren by photometry of omega Centauri, which represents one of the most extensive photometric surveys to date for this clus…
Deep Wide Field BVI CCD Photometry of the Sextans Dwarf Spheroidal Galaxy
Myung Goon Lee, Hong Soo Park, Jang-Hyun Park +12
We present deep wide field CCD photometry of the Sextans dwarf spheroidal galaxy (dSph) in the Local Group, covering a field of 42' x 28' located at the center of the galaxy.…
Synthetic Color-Magnitude Diagrams for omega Centauri and Other Massive Globular Clusters with Multiple Populations
Chang H. Ree, Suk-Jin Yoon, Soo-Chang Rey +1
We have constructed synthetic color-magnitude diagrams (CMDs) for omega Cen and other massive globular clusters with apparently peculiar CMD morphology. Our population models, whic…
Omega Centauri as a Disrupted Dwarf Galaxy: Evidence from Multiple Stellar Populations
Young-Wook Lee, Soo-Chang Rey, Chang H. Ree +4
Our recent CCD photometry (Lee et al. 1999) has shown, for the first time, that omega Cen has several distinct stellar populations, which is reminiscent of the Sagittarius dwarf ga…
Wide-field High-precision CCD Photometry of omega Centauri and Its RR Lyrae Stars
Soo-Chang Rey, Jong-Myung Joo, Young-Jong Sohn +3
We present wide-field and high-precision BV and Ca & Stromgren by photometry of omega Centauri and its RR Lyrae stars, which represents one of the most extensive photometric survey…
CCD Photometry of the Classic Second Parameter Globular Clusters M3 and M13
Soo-Chang Rey, Suk-Jin Yoon, Young-Wook Lee +2
We present high-precision V, B-V color-magnitude diagrams (CMDs) for the classic second parameter globular clusters M3 and M13 from wide-field deep CCD photometry. The data for the…
Horizontal-Branch Morphology as an Age Indicator
Young-Wook Lee, Suk-Jin Yoon, Soo-Chang Rey +1
We present our recent revision of model constructions for the horizontal-branch (HB) morphology of globular clusters, which suggests the HB morphology is more sensitive to age comp…
CCD Photometry of the Globular Cluster Omega Centauri. I. Metallicity of RR Lyrae Stars from Caby Photometry
Soo-Chang Rey, Young-Wook Lee, Jong-Myung Joo +2
We present new measurements of the metallicity of 131 RR Lyrae stars in the globular cluster Omega Centauri, using the hk index of the Caby photometric system. The hk method has di…
Multiple Stellar Populations in the Globular Cluster omega Centauri as Tracers of a Merger Event
Young-Wook Lee, Jong-Myung Joo, Young-Jong Sohn +3
The discovery of the Sagittarius dwarf galaxy, which is being tidally disrupted by and merging with the Milky Way, supports the view that the halo of the Galaxy has been built up a…