71 citations · 294 across the 8 of their papers we have counts for
9 papers · 1 filter
Completeness of the Gaia-verse IV: The Astrometry Spread Function of Gaia DR2
Andrew Everall, Douglas Boubert, Sergey E. Koposov +2
Gaia DR2 published positions, parallaxes and proper motions for an unprecedented 1,331,909,727 sources, revolutionising the field of Galactic dynamics. We complement this data with…
Completeness of the Gaia-verse III: using hidden states to infer gaps, detection efficiencies and the scanning law from the DR2 light curves
Douglas Boubert, Andrew Everall, Jack Fraser +2
The completeness of the Gaia catalogues heavily depends on the status of that space telescope through time. Stars are only published with each of the astrometric, photometric and s…
Completeness of the Gaia-verse II: what are the odds that a star is missing from Gaia DR2?
Douglas Boubert, Andrew Everall
The second data release of the Gaia mission contained astrometry and photometry for an incredible 1,692,919,135 sources, but how many sources did Gaia miss and where do they lie on…
Deflection of the hypervelocity stars by the dance of the Milky Way and Large Magellanic Cloud
Douglas Boubert, Denis Erkal, Alessia Gualandris
Stars slingshotted by the supermassive black hole at the Galactic centre will escape the Milky Way so quickly that their trajectories will be almost straight lines. Previous works…
Spectroscopy of the Young Stellar Association Price-Whelan 1: Origin in the Magellanic Leading Arm and Constraints on the Milky Way Hot Halo
David L. Nidever, Adrian M. Price-Whelan, Yumi Choi +7
We report spectroscopic measurements of stars in the recently discovered young stellar association Price-Whelan 1 (PW 1), which was found in the vicinity of the Leading Arm (LA) of…
The Great Escape: Discovery of a nearby 1700 km/s star ejected from the Milky Way by Sgr A*
Sergey E. Koposov, Douglas Boubert, Ting S. Li +17
We present the serendipitous discovery of the fastest Main Sequence hyper-velocity star (HVS) by the Southern Stellar Stream Spectroscopic Survey (S5). The star S5-HVS1 is a $\sim…