441 citations · 7.2k across the 106 of their papers we have counts for
4 papers · 2 filters
A Sun-like star orbiting a black hole
Kareem El-Badry, Hans-Walter Rix, Eliot Quataert +18
We report discovery of a bright, nearby () Sun-like star orbiting a dark object. We identified the system as a black hole candidate via its astrometri…
Magnetic braking saturates: evidence from the orbital period distribution of low-mass detached eclipsing binaries from ZTF
Kareem El-Badry, Charlie Conroy, Jim Fuller +4
We constrain the orbital period () distribution of low-mass detached main-sequence eclipsing binaries (EBs) with light curves from the Zwicky Transient Facility (ZTF),…
Unicorns and Giraffes in the binary zoo: stripped giants with subgiant companions
Kareem El-Badry, Rhys Seeburger, Tharindu Jayasinghe +5
We analyze two binary systems containing giant stars, V723 Mon ("the Unicorn") and 2M04123153+6738486 ("the Giraffe"). Both giants orbit more massive but less luminous companions,…
Birth of a Be star: an APOGEE search for Be stars forming through binary mass transfer
Kareem El-Badry, Charlie Conroy, Eliot Quataert +7
Motivated by recent suggestions that many Be stars form through binary mass transfer, we searched the APOGEE survey for Be stars with bloated, stripped companions. From a well-defi…