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...
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...
The 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...
The 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...
The 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...
Two 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...
Understanding 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...