97 citations · 359 across the 12 of their papers we have counts for
12 papers
Improved constraints on Galactic Centre ejection of hypervelocity stars based on novel search method
Sill Verberne, Elena Maria Rossi, Sergey E. Koposov +6
Hypervelocity stars (HVSs) are stars which have been ejected from the Galactic Centre (GC) at velocities of up to a few thousand km/s. They are tracers of the Galactic potential an…
Radial velocities from Gaia BP/RP spectra
Sill Verberne, Sergey E. Koposov, Elena M. Rossi +3
The Gaia mission has provided us full astrometric solutions for over 1.5B sources. However, only the brightest 34M of those have radial velocity measurements. As a proof of concept…
Constraints on the Galactic Centre environment from \textit{Gaia} hypervelocity stars III: Insights on a possible companion to Sgr A*
Fraser A. Evans, Alexander Rasskazov, Amber Remmelzwaal +4
We consider a scenario in which Sgr A* is in a massive black hole binary (MBHB) with an as-of-yet undetected supermassive or intermediate-mass black hole companion. Dynamical encou…
Gaia DR3 in 6D: The search for fast hypervelocity stars and constraints on the Galactic Centre environment
Tommaso Marchetti, Fraser A. Evans, Elena Maria Rossi
The third data release (DR3) of the European Space Agency satellite Gaia provides coordinates, parallaxes, proper motions, and radial velocities for a sample of million s…
Constraints on the Galactic Centre environment from Gaia hypervelocity stars II: The evolved population
Fraser A. Evans, Tommaso Marchetti, Elena Maria Rossi
A dynamical encounter between a stellar binary and Sgr A* in the Galactic Centre (GC) can tidally separate the binary and eject one member with a velocity beyond the escape speed o…
Constraints on the Galactic Centre environment from Gaia hypervelocity stars
F. A. Evans, T. Marchetti, E. M. Rossi
Following a dynamical encounter with Sgr A*, binaries in the Galactic Centre (GC) can be tidally separated and one member star ejected as a hyper-velocity star (HVS) with a velocit…