5 papers
Seeking Spectroscopic Binaries with Data-Driven Models
Isabel Angelo, Erik Petigura, Megan Bedell
Data-driven stellar classification has a long and important history in astronomy, dating as far back as Annie Jump Cannon's "by eye" classifications of stars into spectral types st…
Triple Evolution Pathways to Black Hole Low-Mass X-ray Binaries: Insights from V404 Cygni
Cheyanne Shariat, Smadar Naoz, Kareem El-Badry +5
A recent discovery shows that V404 Cygni, a prototypical black hole low-mass X-ray binary (BH-LMXB) is a hierarchical triple: the BH and donor star are orbited by a M$_{\odot…
Planet Masses, Radii, and Orbits from NASA's K2 Mission
Andrew W. Howard, Evan Sinukoff, Sarah Blunt +50
We report the masses, sizes, and orbital properties of 86 planets orbiting 55 stars observed by NASA's K2 Mission with follow-up Doppler measurements by the HIRES spectrometer at t…
The TESS-Keck Survey XXIV: Outer Giants may be More Prevalent in the Presence of Inner Small Planets
Judah Van Zandt, Erik A. Petigura, Jack Lubin +38
We present the results of the Distant Giants Survey, a three-year radial velocity (RV) campaign to search for wide-separation giant planets orbiting Sun-like stars known to host an…
Once a Triple, Not Always a Triple: The Evolution of Hierarchical Triples that Yield Merged Inner Binaries
Cheyanne Shariat, Smadar Naoz, Kareem El-Badry +4
More than half of all main-sequence (MS) stars have one or more companions, and many of those with initial masses <8 M are born in hierarchical triples. These systems featu…