The new observational O/Fe vs Fe/H relationship in halo dwarfs is analyzed in terms of a model of chemical evolution for the solar neighborhood. The role of...
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PublicationThe early nucleosynthesis of O and Fe
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PublicationThe ELM Survey. IV. 24 White Dwarf Merger Systems
We present new radial velocity and X-ray observations of extremely low mass (ELM, ~0.2 M &sun;) white dwarf (WD) candidates in the Sloan Digital Sky Survey Data...
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PublicationThe Gravitational-wave Optical Transient Observer (GOTO): prototype performance and prospects for transient science
The Gravitational-wave Optical Transient Observer (GOTO) is an array of wide-field optical telescopes, designed to exploit new discoveries from the next...
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PublicationThe shortest period detached binary white dwarf system
We identify SDSS J010657.39-100003.3 (hereafter J0106-1000) as the shortest period detached binary white dwarf (WD) system currently known. We targeted J0106...
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TalkThe Warped Side of our Universe: From the Big Bang to Black Holes and Gravitational Waves
There is a "Warped side" of our universe, consisting of objects and phenomena that are made solely or largely from warped spacetime. Examples are black holes...
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PublicationTwo decades of optical timing of the shortest-period binary star system HM Cancri
The shortest-period binary star system known to date, RX J0806.3+1527 (HM Cancri), has now been observed in the optical for more than two decades. Although it...
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TalkUnderstanding the post-merger requiem of binary black holes
Gravitational waves (GWs) emitted by binary black hole coalescences provide an excellent opportunity to study General Relativity (GR) in its strong field regime...