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Star Clusters in the Elliptical Galaxy NGC 4589 Hosting a Calcium-rich SN Ib (SN 2005CZ)
Myung Gyoon Lee, In Sung Jang, Jisu Kang
_NGC 4589, a bright E2 merger-remnant galaxy, hosts the peculiar fast and faint calcium-rich Type Ib supernova (SN) SN 2005cz. The progenitor of Ca-rich SNe Ib has been controversi…
The Carnegie-Chicago Hubble Program. V. The Distances to NGC 1448 and NGC 1316 via the Tip of the Red Giant Branch
Dylan Hatt, Wendy L. Freedman, Barry F. Madore +8
The Carnegie-Chicago Hubble Program (CCHP) is re-calibrating the extragalactic SN Ia distance scale using exclusively Population II stars. This effort focuses on the Tip of the Red…
Discovery of Two New Globular Clusters in the Milky Way
Jinhyuk Ryu, Myung Gyoon Lee
The spatial distribution of known globular clusters (GCs) in the Milky Way shows that the current census of GCs is incomplete in the direction of the Galactic plane. We present the…
Nuclear starburst activity induced by elongated bulges in spiral galaxies
Eunbin Kim, Sungsoo S. Kim, Yun-Young Choi +4
We study the effects of bulge elongation on the star formation activity in the centers of spiral galaxies using the data from the Sloan Digital Sky Survey Data Release 7. We constr…
Gemini/GMOS Spectroscopy of Globular Clusters in the Merger Remnant Galaxy M85
Youkyung Ko, Myung Gyoon Lee, Hong Soo Park +3
M85 is a peculiar S0 galaxy in Virgo and is a well-known merger remnant. In this paper, we present the first spectroscopic study of globular clusters (GCs) in M85. We obtain spectr…
A Globular Cluster Luminosity Function Distance to NGC 4993 Hosting a Binary Neutron Star Merger GW170817/GRB 170817A
Myung Gyoon Lee, Jisu Kang, Myungshin Im
NGC 4993 hosts a binary neutron star merger emitting gravitational waves and electromagnetic waves, GW170817/GRB 170817A. The distance to this galaxy is not well established. We se…
A WISE Survey of New Star Clusters in the Central Plane Region of the Milky Way
Jinhyuk Ryu, Myung Gyoon Lee
We present the discovery of new star clusters in the central plane region ( and ) of the Milky Way. In order to overcome the extinction problem and the spatial lim…
The Near-Infrared Tip of the Red Giant Branch. I. A Calibration in the Isolated Dwarf Galaxy IC 1613
Barry F. Madore, Wendy L. Freedman, Dylan Hatt +8
Based on observations from the \emph{FourStar} near-infrared camera on the 6.5m Baade-Magellan telescope at Las Campanas, Chile, we present calibrations of the luminosities o…
The Near-Infrared Tip of the Red Giant Branch. II. An Absolute Calibration in the Large Magellanic Cloud
Taylor J. Hoyt, Wendy L. Freedman, Barry F. Madore +7
We present a new empirical \(JHK\) absolute calibration of the tip of the red giant branch (TRGB) in the Large Magellanic Cloud (LMC). We use published data from the extensive \emp…