activity
20112026
most citedDisentangling Planets and Stellar Activity for Gliese 667C

87 citations · 163 across the 14 of their papers we have counts for

collaborators

16 papers

astro-ph.EP2026

GEMS JWST: Hold on to your HATS(-6 b), a sub-solar metallicity giant planet with water, methane and ammonia in its atmosphere

Giannina Guzmán Caloca, Caleb I. Cañas, Nicole L. Wallack +16

HATS-6 b is one of several recently discovered Giant Exoplanets orbiting M-dwarf Stars (GEMS) and is part of a JWST survey that aims to compare bulk and atmospheric properties of t…

astro-ph.EP2026

COUNTESS I: A Uniformly Vetted Catalog of Known and New Transiting Exoplanets in the TESS Northern Continuous Viewing Zone

Andrew Hotnisky, Rachel B. Fernandes, Kevin K. Hardegree-Ullman +9

The Transiting Exoplanet Survey Satellite (TESS) has transformed the study of nearby exoplanetary systems; however, its nominal observing strategy limits sensitivity to planets wit…

astro-ph.EP2026

Dynamical Tides during High-Eccentricity Migration produces the Hot Jupiter Pile-up, Neptune Ridge, and Neptune Desert

J. J. Zanazzi, Morgan MacLeod, Marta L. Bryan +1

The period distribution of hot gaseous exoplanets depends strongly on mass. Clustering between the orbital periods of 3 to 5-6 days is seen for sub-Saturns ("Neptune ri…

astro-ph.EP2026

A Revised Mass and Period for the Habitable Zone super-Earth GJ 3378b: A Planet Straddling the Cosmic Shoreline

Paul Robertson, Michael Endl, William D. Cochran +18

The nearby ( pc) M4V star GJ~3378 is a target of our radial velocity (RV) exoplanet survey of fully convective stars in the Solar neighborhood with the near-infrared spect…

astro-ph.SR2026

Searching for GEMS: Discovery of the Nearby Post-Common-Envelope Binary System TIC-460388167

Alexandra Boone, Henry A. Kobulnicky, Caleb I. Cañas +11

Short-period white dwarf+main-sequence binaries are Post-Common-Envelope Binaries (PCEB) that have survived a common envelope phase. Such systems, if detached and eclipsing, enable…

astro-ph.EP2026

GEMS JWST: HATS-75 b -- A giant planet with a sub-solar metallicity atmosphere orbiting an M-dwarf

Reza Ashtari, Jacob Lustig-Yaeger, Jessica Libby-Roberts +12

HATS-75 b is one of the recently discovered Giant Exoplanets orbiting M-dwarf Stars (GEMS) with a transmission spectrum shaped by both its atmosphere and the active stellar surface…

astro-ph.EP2026

Searching for GEMS: Three warm Saturns and a super-Jupiter orbiting four early M-dwarfs

Pranav H. Premnath, Paul Robertson, Shubham Kanodia +33

We report the confirmation and characterization of four transiting giant planets orbiting early-M dwarfs discovered by the Searching for Giant Exoplanets around M-dwarf Stars (GEMS…

astro-ph.SR2026

Stellar and orbital characterization of three low mass M dwarf binary stars with dynamical spectroscopy from the Habitable Zone Planet Finder

Suhani Surana, Chad F. Bender, Caleb I. Cañas +13

Theoretical models of low-mass stars continue to be discrepant with observations when used to examine the mass-radius relationship and other physical parameters of individual stars…

astro-ph.EP2026★ 12 cited

A young progenitor for the most common planetary systems in the Galaxy

John H. Livingston, Erik A. Petigura, Trevor J. David +39

The Galaxy's most common known planetary systems have several Earth-to-Neptune-size planets in compact orbits. At small orbital separations, larger planets are less common than the…

astro-ph.SR2025

Hipparcos, Gaia, and RVs reveal that the radio emitting F star HD 220242 has an M dwarf companion, a likely source of the radio emission

Megan Delamer, Guðmundur Stefánsson, Suvrath Mahadevan +18

The detection of circularly polarized, low frequency radio emission offers the tantalizing possibility of the observation of interactions between stars and their possible substella…

astro-ph.EP2025

Spectroscopic Characterization of LOFAR Radio-emitting M dwarfs

E. Koo, G. Stefansson, R. D. Kavanagh +20

Recent observations with the LOw Frequency ARray (LOFAR) have revealed 19 nearby M dwarfs showing bright circularly polarised radio emission. One of the possible sources of such em…

astro-ph.SR2025★ 1 cited

Time-resolved p-mode oscillations for subgiant HD 142091 with NEID at WIYN

Jacob K. Luhn, Paul Robertson, Samuel Halverson +22

Detections of Earth-analog planets in radial velocity observations are limited by stellar astrophysical variability occurring on a variety of timescales. Current state-of-the-art m…

astro-ph.EP2024

Radio Signatures of Star-Planet Interactions, Exoplanets, and Space Weather

J. R. Callingham, B. J. S. Pope, R. D. Kavanagh +22

Radio detections of stellar systems provide a window onto stellar magnetic activity and the space weather conditions of extrasolar planets, information that is difficult to attain…

astro-ph.HE2024★ 36 cited

Sporadic radio pulses from a white dwarf binary at the orbital period

I. de Ruiter, K. M. Rajwade, C. G. Bassa +14

Recent observations have revealed rare, previously unknown flashes of cosmic radio waves lasting from milliseconds to minutes, and with periodicity of minutes to an hour. These tra…

astro-ph.EP2014★ 87 cited

Disentangling Planets and Stellar Activity for Gliese 667C

Paul Robertson, Suvrath Mahadevan

Gliese 667C is an M1.5V star with a multi-planet system, including planet candidates in the habitable zone (HZ). The exact number of planets in the system is unclear, because the e…

astro-ph.EP2011★ 27 cited

A Search for the Transit of HD 168443b: Improved Orbital Parameters and Photometry

Genady Pilyavsky, Suvrath Mahadevan, Stephen R. Kane +13

The discovery of transiting planets around bright stars holds the potential to greatly enhance our understanding of planetary atmospheres. In this work we present the search for tr…