54 citations · 235 across the 8 of their papers we have counts for
15 papers
Enhancement of Double-Close-Binary Quadruples
Gavin B. Fezenko, Hsiang-Chih Hwang, Nadia L. Zakamska
Double-close-binary quadruples (2+2 systems) are hierarchical systems of four stars where two short-period binary systems move around their common center of mass on a wider orbit.…
A hidden population of high-redshift double quasars unveiled by astrometry
Yue Shen, Yu-Ching Chen, Hsiang-Chih Hwang +6
Galaxy mergers occur frequently in the early universe and bring multiple supermassive black holes (SMBHs) into the nucleus, where they may eventually coalesce. Identifying post-mer…
Evidence for the Accretion of Gas in Star-Forming Galaxies: High N/O Abundances in Regions of Anomalously-Low Metallicity
Yuanze Luo, Timothy Heckman, Hsiang-Chih Hwang +11
While all models for the evolution of galaxies require the accretion of gas to sustain their growth via on-going star formation, it has proven difficult to directly detect this inf…
Variability, periodicity and contact binaries in WISE
Evan Petrosky, Hsiang-Chih Hwang, Nadia L. Zakamska +2
The time-series component of WISE is a valuable resource for the study of variable objects. We present an analysis of an all-sky sample of ~450,000 AllWISE+NEOWISE infrared light c…
The non-monotonic, strong metallicity dependence of the wide-binary fraction
Hsiang-Chih Hwang, Yuan-Sen Ting, Kevin C. Schlaufman +2
The metallicity dependence of the wide-binary fraction in stellar populations plays a critical role in resolving the open question of wide binary formation. In this paper, we inves…
A Gravitational Redshift Measurement of the White Dwarf Mass-Radius Relation
Vedant Chandra, Hsiang-Chih Hwang, Nadia L. Zakamska +1
The mass-radius relation of white dwarfs is largely determined by the equation of state of degenerate electrons, which causes the stellar radius to decrease as mass increases. Here…