95 citations · 174 across the 6 of their papers we have counts for
7 papers
Tracing back the birth environments of Type Ia supernova progenitor stars: A pilot study based on 44 early-type host galaxies
Young-Lo Kim, Lluís Galbany, Isobel Hook +1
The environmental dependence of Type Ia supernova (SN Ia) luminosities is well-established, and efforts are being made to find its origin. Previous studies typically use the curren…
Evidence for strong progenitor age dependence of type Ia supernova luminosity standardization process
Young-Wook Lee, Chul Chung, Pierre Demarque +3
Supernova (SN) cosmology is based on the assumption that the width-luminosity relation (WLR) and the color-luminosity relation (CLR) in the type Ia SN luminosity standardization wo…
Further evidence for significant luminosity evolution in supernova cosmology
Young-Wook Lee, Chul Chung, Yijung Kang +1
Supernova (SN) cosmology is based on the assumption that the corrected luminosity of SN Ia would not evolve with redshift. Recently, our age dating of stellar populations in early-…
Early-type Host Galaxies of Type Ia Supernovae. II. Evidence for Luminosity Evolution in Supernova Cosmology
Yijung Kang, Young-Wook Lee, Young-Lo Kim +2
The most direct and strongest evidence for the presence of dark energy is provided by the measurement of galaxy distances using SNe Ia. This result is based on the assumption that…
Environmental Dependence of Type Ia Supernova Luminosities from the YONSEI Supernova Catalog
Young-Lo Kim, Yijung Kang, Young-Wook Lee
There is growing evidence for the dependence of Type Ia supernova (SN Ia) luminosities on their environments. While the impact of this trend on estimating cosmological parameters i…
The Globular Cluster Origin of the Milky Way Outer Bulge: Evidence from Sodium Bimodality
Young-Wook Lee, Jenny J. Kim, Christian I. Johnson +4
Recent investigations of the double red clump in the color-magnitude diagram of the Milky Way bulge cast serious doubts on the structure and formation origin of the outer bulge. Un…
Early-type Host Galaxies of Type Ia Supernovae. I. Evidence for Downsizing
Yijung Kang, Young-Lo Kim, Dongwook Lim +2
Type Ia supernova (SN Ia) cosmology provides the most direct evidence for the presence of dark energy. This result is based on the assumption that the look-back time evolution of S…