514 citations · 4.4k across the 62 of their papers we have counts for
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Pushing Automated Abundance Derivations Into the Cool Star Regime: A Test Using Three G and Two K Stars in Praesepe
Marwan Gebran, Marcel A. Agüeros, Keith Hawkins +2
We present the results of an abundance analysis of three G and two K dwarfs in the Praesepe open cluster based on high-resolution, moderate signal-to-noise-ratio spectra obtained w…
The total mass of the Large Magellanic Cloud from its perturbation on the Orphan stream
D. Erkal, V. Belokurov, C. F. P. Laporte +13
In a companion paper by Koposov et al., RR Lyrae from \textit{Gaia} Data Release 2 are used to demonstrate that stars in the Orphan stream have velocity vectors significantly misal…
Piercing the Milky Way: an all-sky view of the Orphan Stream
S. E. Koposov, V. Belokurov, T. S. Li +13
We use astrometry, broad-band photometry and variability information from the Data Release 2 of ESA's Gaia mission (GDR2) to identify members of the Orphan Stream (OS) across the w…
The Gaia FGK benchmark stars version 2.1
Paula Jofre, Ulrike Heiter, Marcelo Tucci Maia +5
The Gaia FGK benchmark stars are among the preferred samples of reference stars to test parametrisation pipelines of spectroscopic surveys. They consist of a small but carefully se…
Velocity-resolved reverberation mapping of five bright Seyfert 1 galaxies
G. De Rosa, M. M. Fausnaugh, C. J. Grier +99
We present the first results from a reverberation-mapping campaign undertaken during the first half of 2012, with additional data on one AGN (NGC 3227) from a 2014 campaign. Our ma…
The Fastest Travel Together: Chemical Tagging of the Fastest Stars in Gaia DR2 to the Stellar Halo
Keith Hawkins, Rosemary F. G. Wyse
The fastest moving stars provide insight into several fundamental properties of the Galaxy, including the escape velocity as a function of Galactocentric radius, the total mass, an…
An Ultraviolet-Optical Color-Metallicity relation for Red Clump Stars using GALEX and Gaia
Steven Mohammed, David Schiminovich, Keith Hawkins +3
Although core helium-burning red clump (RC) stars are faint at ultraviolet wavelengths, their ultraviolet-optical color is a unique and accessible probe of their physical propertie…
A large and pristine sample of standard candles across the Milky Way: ~100,000 red clump stars with 3% contamination
Yuan-Sen Ting, Keith Hawkins, Hans-Walter Rix
Core helium-burning red clump (RC) stars are excellent standard candles in the Milky Way. These stars may have more precise distance estimates from spectrophotometry than from Gaia…
Revisiting hypervelocity stars after Gaia DR2
Douglas Boubert, James Guillochon, Keith Hawkins +3
Hypervelocity stars are intriguing rare objects traveling at speeds large enough to be unbound from the Milky Way. Several mechanisms have been proposed for producing them, includi…