158 citations · 430 across the 23 of their papers we have counts for
7 papers · 1 filter
Predicting Macroturbulence in F/G/K Dwarfs to 100 m/s Precision
Jack Lubin, Erik Petigura, Kento Masuda +6
We leverage the high resolution and spectral stability of the Keck Planet Finder (KPF) spectrograph to investigate macroturbulence broadening via the stellar cross-correlation func…
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…
A Data-driven Spectral Model of Main Sequence Stars in Gaia DR3
Isabel Angelo, Megan Bedell, Erik Petigura +1
Precise spectroscopic classification of planet hosts is an important tool of exoplanet research at both the population and individual system level. In the era of large-scale survey…
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…
The California Legacy Survey V. Chromospheric Activity Cycles in Main Sequence Stars
Howard Isaacson, Andrew W. Howard, Benjamin Fulton +31
We present optical spectroscopy of 710 solar neighborhood stars collected over twenty years to catalog chromospheric activity and search for stellar activity cycles. The California…
Dynamical Evolution of White Dwarfs in Triples in the Era of Gaia
Cheyanne Shariat, Smadar Naoz, Bradley M. S. Hansen +3
The mission has detected many white dwarfs (WDs) in binary and triple configurations, and while observations suggest that triple stellar systems are common in our Galaxy, no…