70 citations · 1k across the 46 of their papers we have counts for
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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…
Very wide companion fraction from Gaia DR2: a weak or no enhancement for hot jupiter hosts, and a strong enhancement for contact binaries
Hsiang-Chih Hwang, Jacob H. Hamer, Nadia L. Zakamska +1
There is an ongoing debate on whether hot jupiter hosts are more likely to be found in wide binaries with separations of AU. In this paper, we search for comoving, ve…
Computational Tools for the Spectroscopic Analysis of White Dwarfs
Vedant Chandra, Hsiang-Chih Hwang, Nadia L. Zakamska +1
The spectroscopic features of white dwarfs are formed in the thin upper layer of their stellar photosphere. These features carry information about the white dwarf's surface tempera…