no code implementations • 8 Dec 2020 • Evan Petrosky, Hsiang-Chih Hwang, Nadia L. Zakamska, Vedant Chandra, Matthew J. Hill
The time-series component of WISE is a valuable resource for the study of variable objects.
Time Series Analysis Solar and Stellar Astrophysics
no code implementations • 6 Oct 2020 • Hsiang-Chih Hwang, Yuan-Sen Ting, Kevin C. Schlaufman, Nadia L. Zakamska, Rosemary F. G. Wyse
The negative metallicity correlation at [Fe/H]$>0$ can be inherited from the similar metallicity dependence of close binaries, and radial migration may play a role in enhancing the wide-binary fraction around the solar metallicity.
Solar and Stellar Astrophysics Astrophysics of Galaxies
no code implementations • 28 Jul 2020 • Vedant Chandra, Hsiang-Chih Hwang, Nadia L. Zakamska, Sihao Cheng
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.
Solar and Stellar Astrophysics Astrophysics of Galaxies
1 code implementation • 22 Jul 2020 • Vedant Chandra, Hsiang-Chih Hwang, Nadia L. Zakamska, Tamás Budavári
The spectroscopic features of white dwarfs are formed in the thin upper layer of their stellar photosphere.
Solar and Stellar Astrophysics
1 code implementation • 13 Sep 2019 • Hsiang-Chih Hwang, Nadia Zakamska
Instead, our best-fit models suggest that the formation of these short-period binaries is delayed by 0. 6-3 Gyr, and the disappearing time is less than the age of the thick disk.
Solar and Stellar Astrophysics Astrophysics of Galaxies