355 citations · 4.5k across the 73 of their papers we have counts for
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Discovery of pulsations, including possible pressure modes, in two new extremely low mass, He-core white dwarfs
J. J. Hermes, M. H. Montgomery, D. E. Winget +6
We report the discovery of the second and third pulsating extremely low mass white dwarfs (WDs), SDSS J111215.82+111745.0 (hereafter J1112) and SDSS J151826.68+065813.2 (hereafter…
Rapid Orbital Decay in the 12.75-minute WD+WD Binary J0651+2844
J. J. Hermes, Mukremin Kilic, Warren R. Brown +6
We report the detection of orbital decay in the 12.75-min, detached binary white dwarf (WD) SDSS J065133.338+284423.37 (hereafter J0651). Our photometric observations over a 13-mon…
The Nature of Hypervelocity Stars and the Time Between Their Formation and Ejection
Warren R. Brown, Judith G. Cohen, Margaret J. Geller +1
We obtain Keck HIRES spectroscopy of HVS5, one of the fastest unbound stars in the Milky Way halo. We show that HVS5 is a 3.62 +- 0.11 Msun main sequence B star at a distance of 50…
SDSS J184037.78+642312.3: The First Pulsating Extremely Low Mass White Dwarf
J. J. Hermes, M. H. Montgomery, D. E. Winget +3
We report the discovery of the first pulsating extremely low mass (ELM) white dwarf (WD), SDSS J184037.78+642312.3 (hereafter J1840). This DA (hydrogen-atmosphere) WD is by far the…
The ELM Survey. IV. 24 White Dwarf Merger Systems
Mukremin Kilic, Warren R. Brown, Carlos Allende Prieto +4
We present new radial velocity and X-ray observations of extremely low-mass (ELM, 0.2 Msol) white dwarf candidates in the Sloan Digital Sky Survey (SDSS) Data Release 7 area. We id…
Binary Disruption by Massive Black Holes: Hypervelocity Stars, S Stars, and Tidal Disruption Events
Benjamin C. Bromley, Scott J. Kenyon, Margaret J. Geller +1
We examine whether disrupted binary stars can fuel black hole growth. In this mechanism, tidal disruption produces a single hypervelocity star (HVS) ejected at high velocity and a…