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Spectroscopic follow-up of compact object binary candidates from Gaia DR3: White dwarfs, neutron stars, black holes, and the parallax zeropoint
Kareem El-Badry, David W. Latham, Hans-Walter Rix +12
Astrometry and radial velocities (RVs) from Gaia DR3 yielded orbits for hundreds of thousands of binary systems, including several samples proposed to contain black holes (BHs), ne…
MESS: Multi-Epoch Spectroscopic Solver for Detecting Double-Lined Systems
Gil Nachmani, Simchon Faigler, Tsevi Mazeh
We present MESS, a fully automated algorithm for identifying and characterizing double-lined spectroscopic binaries (SB2) in large databases of multi-epoch spectra. MESS extends th…
Revisiting Stellar equatorial rotational velocities with Gaia DR3 line broadening -- the dependence on temperature, mass and age
Amitay Sussholz, Tsevi Mazeh, Simchon Faigler
We used more than Gaia DR3 line broadening vbroad measurements to examine stellar rotation as a function of stellar temperature, mass and age. The large sample clearly displ…
An upper limit on the frequency of short-period black hole companions to Sun-like stars
Matthew J. Green, Yoav Ziv, Hans-Walter Rix +9
Stellar-mass black holes descend from high-mass stars, most of which had stellar binary companions. However, the number of those binary systems that survive the binary evolution an…
A generative model for Gaia astrometric orbit catalogs: selection functions for binary stars, giant planets, and compact object companions
Kareem El-Badry, Casey Lam, Berry Holl +4
Astrometry from Gaia DR3 has produced a sample of 170,000 Keplerian orbital solutions, with many more anticipated in the next few years. These data have enormous potential to…
Gaia BH1 and BH2 -- evolutionary models with overshooting of the black hole progenitors within the present-day binary separation
Avishai Gilkis, Tsevi Mazeh
Three black holes (BHs) in wide binaries - Gaia BH1, BH2 and BH3 - were recently discovered. The likely progenitors of the BHs were massive stars that experienced a supergiant phas…