58 citations · 108 across the 5 of their papers we have counts for
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Evaluating the Limits of Rotation Period Recovery through Gyrochronology Criteria
Mariel Lares-Martiz, Terry D. Oswalt, Derek L. Buzasi +3
Contamination from nearby sources often compromises stellar rotation periods derived from photometric light curves, particularly in data with large pixel scales such as TESS. This…
Orbital Characteristics of the Subdwarf-B and F V Star Binary EC~20117-4014(=V4640 Sgr)
T. Otani, T. Oswalt, A. E. Lynas-Gray +4
Among the competing evolution theories for subdwarf-B (sdB) stars is the binary evolution scenario. EC~20117-4014 (=V4640~Sgr) is a spectroscopic binary system consisting of a puls…
Three Moving Groups Detected in the LAMOST DR1 Archive
Jingkun Zhao, Gang Zhao, Yuqin Chen +3
We analyze the kinematics of thick disk and halo stars observed by the Large sky Area Multi-Object Fiber Spectroscopic Telescope. We have constructed a sample of 7,993 F, G and K n…
Tracers of chromospheric structure. I. CaII HK emission distribution of 13000 F, G and K stars in SDSS DR7 spectroscopic sample
J. K. Zhao, T. D. Oswalt, G. Zhao +3
We present chromospheric activity index measurements for over 13,000 F, G and K disk stars with high signal-to-noise ratio ( 60) spectra in the Sloan Digital Sky Sur…
The Initial-Final Mass Relation among White Dwarfs in Wide Binaries
Jingkun Zhao, Terry D. Oswalt, Lee Anne Willson +2
We present the initial-final mass relation derived from 10 white dwarfs in wide binaries that consist of a main sequence star and a white dwarf. The temperature and gravity of each…