activity
19982023
most citedPlanet Occurrence within 0.25 AU of Solar-type Stars from Kepler

1.2k citations · 21.2k across the 184 of their papers we have counts for

collaborators

184 papers

astro-ph.SR2023

Refining the Stellar Parameters of Ceti: a Pole-on Solar Analog

Maria Korolik, Rachael M. Roettenbacher, Debra A. Fischer +16

To accurately characterize the planets a star may be hosting, stellar parameters must first be well-determined. Ceti is a nearby solar analog and often a target for exoplanet s…

astro-ph.EP2023★ 14 cited

EXPRES IV: Two Additional Planets Orbiting Coronae Borealis Reveal Uncommon System Architecture

John M. Brewer, Lily L. Zhao, Debra A. Fischer +7

Thousands of exoplanet detections have been made over the last twenty-five years using Doppler observations, transit photometry, direct imaging, and astrometry. Each of these metho…

astro-ph.EP2022★ 11 cited

Measured Spin-Orbit Alignment of Ultra-Short Period Super-Earth 55 Cancri e

Lily L. Zhao, Vedad Kunovac, John M. Brewer +8

A planet's orbital alignment places important constraints on how a planet formed and consequently evolved. The dominant formation pathway of ultra-short period planets ( day)…

astro-ph.IM2022

Report on Community Cadence Observing to Maximize the Scientific Output of the Keck Planet Finder

Erik Petigura, Andrew Howard, Jacob Bean +11

The arrival of the Keck Planet Finder (KPF) in 2022 represents a major advance in the precision radial velocity (PRV) capabilities of the W. M. Keck Observatory. In preparation for…

astro-ph.EP2022★ 61 cited

The EXPRES Stellar Signals Project II. State of the Field in Disentangling Photospheric Velocities

Lily L. Zhao, Debra A. Fischer, Eric B. Ford +40

Measured spectral shifts due to intrinsic stellar variability (e.g., pulsations, granulation) and activity (e.g., spots, plages) are the largest source of error for extreme precisi…

astro-ph.EP2021★ 20 cited

EXPRES. III. Revealing the Stellar Activity Radial Velocity Signature of Eridani with Photometry and Interferometry

Rachael M. Roettenbacher, Samuel H. C. Cabot, Debra A. Fischer +20

The distortions of absorption line profiles caused by photospheric brightness variations on the surfaces of cool, main-sequence stars can mimic or overwhelm radial velocity (RV) sh…