activity
20132026
most citedA giant planet undergoing extreme ultraviolet irradiation by its hot massive-star host

270 citations · 3.6k across the 137 of their papers we have counts for

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117 papers · 1 filter

astro-ph.EP2026

HD 715 b, a Warm Jupiter Orbiting a Massive Subgiant Discovered from a Single TESS Transit

Alexander Venner, Robert A. Wittenmyer, Andrew Vanderburg +23

Transiting Warm Jupiters orbiting bright stars are scarcely known, but a substantial number of these planets have been uncovered by the TESS mission. In this work we report the dis…

astro-ph.EP2026

Toddlers in Resonance I: low masses and eccentricities of the 17 Myr giant planets HIP 67522 bc from transit timing variations

Hannah R. James, Madyson G. Barber, Andrew W. Mann +28

Infant (100\,Myr) transiting planet systems provide glimpses into the processes that shape the observed mature planet population. Masses for these planets are powerful data poin…

astro-ph.EP2026

Exoplanet System Architecture: Sculpting the Inner Regions

Mark R. Swain, Geoffrey Bryden, Jonathan C. Tan +14

In this study, we seek to improve our understanding of the competing roles of disk-driven and planet-planet dynamical migration in sculpting planetary system architecture in the in…

astro-ph.EP2026

TOI-3664 b, TOI-4034 b & TOI-6564 b: Three new hot Jupiters around stars approaching the terminal age main sequence

Matthew P. Battley, Marina Lafarga, Edward Gillen +21

Studying the evolution of hot Jupiters requires a sample of well-characterised systems across all evolutionary states. We present three new gas giant exoplanets around stars approa…

astro-ph.EP2026

Discovery of an Inflated Hot Neptune and Its Formation from Jovian Mass Loss

Grant C. Weldon, Samuel W. Yee, Bradley M. S. Hansen +17

The production of Neptune-like planets with orbital periods of 3--6 days is challenging for conventional models of high-eccentricity migration. We present the discovery and charact…

astro-ph.EP2026

Transit Timing Variations in TESS: A Catalog from the First Five Years

Emma Nabbie, Chelsea X. Huang, Robert A. Wittenmyer +1

We present the first catalog of transit timing variations (TTVs) in TESS systems with multiple TESS Objects of Interest (TOIs) using data from Sector 1 to Sector 69, spanning the f…

astro-ph.EP2026

Preparing for the Early eVolution Explorer: Detecting the Primordial, Transiting Exoplanet Population

George Zhou, James G. Rogers, Jennifer A. Burt +17

The close-in small planet population may be formed either with hydrogen/helium dominated envelopes or with water-rich interiors. Both scenarios reproduce the present day planet pop…

astro-ph.EP2026

The Pan-Pacific Planet Search -- IX. A menagerie of companions orbiting evolved stars

Robert A. Wittenmyer, Alexander Venner, Tyler Fairnington +22

We present resolutions as to the nature of six speculative candidate companions proposed in the final data release of the Pan-Pacific Planet Search, a 6-year radial-velocity survey…

astro-ph.EP2026

JWST unveils a high mean molecular weight atmosphere for mini-Neptune TOI-1130b: Evidence for formation beyond the water ice line

Saugata Barat, Tyler Fairnington, Shelby Courreges +21

We present the combined JWST/NIRSpec G395H and NIRISS SOSS transmission spectrum of a warm mini-Neptune, TOI-1130b (3.66 R, 19.8 M, K). It is…

astro-ph.EP2026

The Orbital Eccentricity--Radius Distribution for Warm, Single Planets in TESS

Tyler R. Fairnington, Jiayin Dong, Chelsea X. Huang +40

We characterize the radius-dependent eccentricity distribution of 219 warm (P = 8--50 days) systems with only one transiting planetary candidate identified during Sectors 1-69 of t…

astro-ph.EP2026

TOI-6692b: An eccentric 130 day period giant planet with a single transit from TESS

Allyson Bieryla, Karen A. Collins, George Zhou +46

We report the discovery and characterization of TOI-6692 b, an eccentric (e~0.54) Jupiter on a 130-day orbit. TOI-6692 b was first detected as a community TESS Object of Interest (…

astro-ph.EP2026

Detection of four cold Jupiters through combined analyses of radial velocity and astrometry data

Yiyun Wu, Guang-Yao Xiao, R. Paul Butler +19

Cold Jupiters play a crucial role in planet formation and dynamical evolution. Since their initial discovery around 47 UMa, they have attracted significant interest, yet their form…

astro-ph.EP2025

A Paradigm Shift in Exoplanet False Positive Identification with HIP-44302

Arielle C. Frommer, Jason D. Eastman, David R. Ciardi +5

Through detailed modeling of all three stars, we show that HIP-44302 is a false positive triple-star system. While the Transiting Exoplanet Survey Satellite initially designated th…

astro-ph.EP2025

Ever Elusive Exospheres: One Probable Detection and Two Non-Detections of Hα Transits in Young Systems

Reilly P. Milburn, Andrew W. Mann, Keighley Rockcliffe +5

Gaps in the exoplanet population, such as the Neptunian Desert, point to the importance of mass-loss in sculpting the radii of close-in exoplanets. Young planets (500Myr) offer…

astro-ph.EP2025

Exploring Warm Jupiter Migration Pathways with Eccentricities. I. Catalog of Uniform Keplerian Fits to Radial Velocities of 200 Warm Jupiters

Marvin Morgan, Brendan P. Bowler, Quang H. Tran +4

Giant planets are expected to predominantly form beyond the water ice line and occasionally undergo inward migration. Unlike hot Jupiters, which can result from high-eccentricity t…

astro-ph.EP2025

High five from ASTEP: Three validated planets and two eclipsing binaries in a diverse set of long-period candidates

Erika Rea, Maximilian N. Günther, George Dransfield +44

We present the analysis of five long-period TESS Objects of Interest (TOIs), all orbiting Sun-like stars, with orbital periods exceeding one month. Initially identified by the Tran…

astro-ph.EP2025★ 4 cited

The OATMEAL Survey. III. An Aligned Transiting Warm Brown Dwarf and Evidence for Quiescent Brown Dwarf Migration

Noah Vowell, Jiayin Dong, Joseph E. Rodriguez +7

We present the first measurement of the sky-projected orbital obliquity of a benchmark transiting brown dwarf host, HIP 33609, as a part of the Orbital Architectures of Transiting…

astro-ph.EP2025★ 5 cited

A high mutual inclination system around KOI-134 revealed by transit timing variations

Emma Nabbie, Chelsea X. Huang, Judith Korth +9

Few planetary systems have measured mutual inclinations, and even less are found to be non-coplanar. Observing the gravitational interactions between exoplanets is an effective too…

astro-ph.EP2025

The TESS Grand Unified Hot Jupiter Survey. III. Thirty More Giant Planets

Samuel W. Yee, Joshua N. Winn, Joel D. Hartman +123

We present the discovery of 30 transiting giant planets that were initially detected using data from NASA's Transiting Exoplanet Survey Satellite (TESS) mission. These new planets…

astro-ph.EP2025

Searching for helium escape and a low density atmosphere around the 120 Myr old sub-Neptune HIP94235b using CRIRES+

Ava Morrissey, George Zhou, Chelsea X. Huang +6

Atmospheric mass loss is thought to induce the bimodality in the small planet population as we observe it today. Observationally, active mass loss can be traced by excess absorptio…

astro-ph.EP2025

The Eccentricity Distribution of Warm Sub-Saturns in TESS

Tyler R. Fairnington, Jiayin Dong, Chelsea X. Huang +45

We present the eccentricity distribution of warm sub-Saturns (4-8 Re, 8-200 day periods) as derived from an analysis of transit light curves from NASA's Transiting Exoplanet Survey…

astro-ph.EP2025★ 5 cited

TOI-2005b: An Eccentric Warm Jupiter in Spin-Orbit Alignment

Allyson Bieryla, Jiayin Dong, George Zhou +36

We report the discovery and characterization of TOI-2005b, a warm Jupiter on an eccentric (e~0.59), 17.3-day orbit around a V_mag = 9.867 rapidly rotating F-star. The object was de…

astro-ph.EP2025★ 7 cited

Evidence for Primordial Alignment II: Insights from Stellar Obliquity Measurements for Hot Jupiters in Compact Multiplanet Systems

Brandon Thomas Radzom, Jiayin Dong, Malena Rice +5

A significant fraction of hot Jupiters have orbital axes misaligned with their host stars' spin axes. The large stellar obliquities of these giants have long been considered potent…

astro-ph.EP2025★ 3 cited

A 16 Myr super-Neptune in Upper-Centaurus Lupus and a preliminary survey of transiting planets in Sco-Cen with TESS

Sydney Vach, George Zhou, Andrew W. Mann +25

Measuring the properties of planets younger than about 50 Myr helps to test different planetary formation and evolution models. NASA's Transiting Exoplanet Survey Satellite (TESS)…