Giant stars as known exoplanet hosts are relatively rare due to the potential challenges in acquiring precision radial velocities and the small predicted...
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PublicationAsteroseismology of iota Draconis and Discovery of an Additional Long-period Companion
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PublicationBlue stragglers and the binary hypothesis
An observational test of the binary hypothesis for the origin of blue straggler stars is conducted by searching for radial velocity variables among 30 blue...
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PublicationBlue stragglers in open clusters - A test of the binary hypothesis
A search for binaries among 17 blue stragglers in five galactic clusters, NGC 7789, 6633, 6819, 6939, and M 67, has been performed using measurements of radial...
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PublicationClose Binary Companions to APOGEE DR16 Stars: 20,000 Binary-star Systems Across the Color-Magnitude Diagram
Many problems in contemporary astrophysics—from understanding the formation of black holes to untangling the chemical evolution of galaxies—rely on knowledge...
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PublicationConstraints to the masses of brown dwarf candidates form the lithium test
We present intermediate dispersion (0.7-2.2 A/pixel) optical spectroscopic observations aimed at applying the 'lithium test' to a sample of 10 brown dwarf...
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PublicationDESI Observations of the Andromeda Galaxy: Revealing the Immigration History of Our Nearest Neighbor
We present Dark Energy Spectroscopic Instrument (DESI) observations of the inner halo of M31, which reveal the kinematics of a recent merger-a galactic...
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PublicationDetection of Gravitational Redshift in Open Cluster Nondegenerate Stars
A key observational prediction of Einstein's Equivalence Principle is that light undergoes redshift when it escapes from a gravitational field. Although...
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PublicationDiagnostics of chromospheric velocity fields
This paper examines the possibility of recovering quantitative information on chromospheric velocity fields from high resolution (lambda/Delta lambda of about...
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PublicationDynamical Architectures of S-type Transiting Planets in Binaries. I. Target Selection Using Hipparcos and Gaia Proper Motion Anomalies
The effect of stellar multiplicity on planetary architecture and orbital dynamics provides an important context for exoplanet demographics. We present a volume...