Probing the intermediate-age globular clusters in NGS 5128 from ultraviolet observations (2009)
Rey, Soo-Chang, Sohn, Sangmo T., Beasley, Michael A, Lee, Young-Wook, Rich, R. Michael, Yoon, Suk-Jin, ...
We explore the age distribution of the globular cluster (GC) system of the nearby elliptical galaxy NGC 5128 using ultraviolet (UV) photometry from GALEX observations, with UV–optical colors used...
An Ultraviolet Study of Star-Forming Regions in M31 (2009)
Kang, Yongbeom, Bianchi, Luciana, Rey, Soo-Chang
We present a comprehensive study of star-forming (SF) regions in the nearest large spiral galaxy M31. We use GALEX far-UV (1344-1786 \AA, FUV) and near-UV (1771-2831 \AA, NUV) imaging to detect young...
Probing the Intermediate-Age Globular Clusters in NGC 5128 from Ultraviolet Observations (2009)
Rey, Soo-Chang, Sohn, Sangmo T., Beasley, Michael A., Lee, Young-Wook, Rich, R. Michael, Yoon, Suk-Jin, ...
We explore the age distribution of the globular cluster (GC) system of the nearby elliptical galaxy NGC 5128 using ultraviolet (UV) photometry from Galaxy Evolution Explorer (GALEX) observations,...
Old stellar population synthesis: new age and mass estimates for Mayall II = G1 (2009)
Ma, Jun, De Grijs, Richard, Fan, Zhou, Rey, Soo-Chang, Wu, Zhen-Yu, Zhou, Xu, ...
Mayall II = G1 is one of the most luminous globular clusters (GCs) in M31. Here, we determine its age and mass by comparing multicolor photometry with theoretical stellar population synthesis models....
Old stellar population synthesis: New age and mass estimates for Mayall II = G1 (2009)
Ma, Jun, De Grijs, Richard, Fan, Zhou, Rey, Soo-Chang, Wu, Zhenyu, Zhou, Xu
Mayall II = G1 is one of the most luminous globular clusters (GCs) in M31. Here, we determine its age and mass by comparing multicolor photometry with theoretical stellar population synthesis models....
Compact stellar systems in the Fornax cluster: a UV perspective (2008)
Mieske, Steffen, Hilker, Michael, Bomans, Dominik J., Rey, Soo-Chang, Kim, Suk, Yoon, Suk-Jin, ...
In recent years, increasing evidence for chemical complexity and multiple stellar populations in massive globular clusters (GCs) has emerged, including extreme horizontal branches (EHBs) and UV...
Stellar Populations of the Globular Cluster M53 (2007)
Soo-chang Rey, Young-wook Lee, Yong-ik Byun
INTRODUCTION Stellar population studies of Galactic globular clusters have played a critical role of efforts to understand stellar evolution for low-mass stars in the metal-poor regime. The...
Blue Straggler Stars In The Globular Cluster M53 (2007)
The first large-format CCD color-magnitude diagram (CMD) in the B and V passbands is presented for the Galactic globular cluster M53 (NGC 5024). We have discovered 117 new blue straggler (BS)...
The Globular Cluster System of M60 (NGC 4649). I. CFHT MOS Spectroscopy and Database (2007)
Lee, Myung Gyoon, Hwang, Ho Seong, Park, Hong Soo, Park, Jang-Hyun, Kim, Sang Chul, Sohn, Young-Jong, ...
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 the Washington...
The Globular Cluster System of M60 (NGC 4649). II. Kinematics of the Globular Cluster System (2007)
Hwang, Ho Seong, Lee, Myung Gyoon, Park, Hong Soo, Kim, Sang Chul, Park, Jang-Hyun, Sohn, Young-Jong, ...
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 of 121 GCs (83 blue...
Ree, Chang H., Lee, Young-Wook, Yi, Sukyoung K., Yoon, Suk-Jin, Rich, R. Michael, Deharveng, Jean-Michel, ...
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 phenomenon. The...
GALEX Ultraviolet Photometry of Globular Clusters in M31: Three Year Results and a Catalog (2007)
Rey, Soo-Chang, Rich, R. Michael, Sohn, Sangmo T., Yoon, Suk-Jin, Chung, Chul, Yi, Sukyoung K., ...
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 (and GC candidates)...
GALEX Ultraviolet Photometry of Globular Clusters in M31: Three Year Results and a Catalog (2006)
Rey, Soo-Chang, Rich, R. Michael, Sohn, Sangmo T., Yoon, Suk-Jin, Chung, Chul, Yi, Sukyoung K., ...
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 (and GC candidates)...
Deep Wide Field BVI CCD Photometry of the Sextans Dwarf Spheroidal Galaxy (2003)
Lee, Myung Goon, Park, Hong Soo, Park, Jang-Hyun, Sohn, Young-Jong, Oh, Seung Joon, Yuk, In-Soo, ...
We present deep wide field $VI$ 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. Color-magnitude...
Wide-field High-precision CCD Photometry of omega Centauri and Its RR Lyrae Stars (2001)
Rey, Soo-Chang, Joo, Jong-Myung, Sohn, Young-Jong, Ree, Chang H., Lee, Young-Wook, Walker, Alistair
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 surveys to date for this...
Omega Centauri as a Disrupted Dwarf Galaxy: Evidence from Multiple Stellar Populations (2001)
Lee, Young-Wook, Rey, Soo-Chang, Ree, Chang H., Joo, Jong-Myung, Sohn, Young-Jong, Yoon, Suk-Jin, ...
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 galaxy. Here we...
Ree, Chang H., Yoon, Suk-Jin, Rey, Soo-Chang, Lee, Young-Wook
We have constructed synthetic color-magnitude diagrams (CMDs) for omega Cen and other massive globular clusters with apparently peculiar CMD morphology. Our population models, which adopt the most...
CCD Photometry of the Classic Second Parameter Globular Clusters M3 and M13 (2001)
Rey, Soo-Chang, Yoon, Suk-Jin, Lee, Young-Wook, Chaboyer, Brian, Sarajedini, Ata
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 two clusters were...
Horizontal-Branch Morphology as an Age Indicator (2001)
Lee, Young-Wook, Yoon, Suk-Jin, Rey, Soo-Chang, Chaboyer, Brian
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 compared to our earlier...
Rey, Soo-Chang, Lee, Young-Wook, Joo, Jong-Myung, Walker, Alistair, Baird, Scott
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 distinct advantages...
Lee, Young-Wook, Joo, Jong-Myung, Sohn, Young-Jong, Rey, Soo-Chang, Lee, Hyun-chul, Walker, Alistair
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 at least partially...