72 citations · 1.2k across the 74 of their papers we have counts for
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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…
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…
A close-in giant planet escapes engulfment by its star
Marc Hon, Daniel Huber, Nicholas Z. Rui +39
When main-sequence stars expand into red giants, they are expected to engulf close-in planets. Until now, the absence of planets with short orbital periods around post-expansion, c…
Rotational modulation of spectroscopic Zeeman signatures in low-mass stars
Ryan C. Terrien, Allison Keen, Katy Oda +24
Accurate tracers of the stellar magnetic field and rotation are cornerstones for the study of M dwarfs and for reliable detection and characterization of their exoplanetary compani…
An eccentric Brown Dwarf eclipsing an M dwarf
Caleb I. Cañas, Suvrath Mahadevan, Chad F. Bender +16
We report the discovery of a brown dwarf transiting the early M dwarf TOI-2119 on an eccentric orbit () at an orbital period of $7.2008…
Persistent starspot signals on M dwarfs: multi-wavelength Doppler observations with the Habitable-zone Planet Finder and Keck/HIRES
Paul Robertson, Gudmundur Stefansson, Suvrath Mahadevan +23
Young, rapidly-rotating M dwarfs exhibit prominent starspots, which create quasiperiodic signals in their photometric and Doppler spectroscopic measurements. The periodic Doppler s…
A Bright Short Period M-M Eclipsing Binary from the KELT Survey: Magnetic Activity and the Mass-Radius Relationship for M-dwarfs
Jack B. Lubin, Joseph E. Rodriguez, George Zhou +26
We report the discovery of KELT J041621-620046, a moderately bright (J10.2) M dwarf eclipsing binary system at a distance of 393 pc. KELT J041621-620046 was first identi…