activity
20162026
most citedThe Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package

7.7k citations · 10.9k across the 92 of their papers we have counts for

collaborators

96 papers

astro-ph.EP2026

An Infant Sub-Saturn in Scorpius-Centaurus

Gurmeher Kathuria, Luke G. Bouma, Andrew W. Boyle +25

We report the discovery and validation of TIC 88297141 Ab, a transiting planet orbiting a pre-main-sequence M dwarf (0.31 solar masses, 0.74 solar radii) in the Scorpius-Centaurus…

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.SR2026

NGC 1901: A new benchmark cluster for gyrochronology in the TESS Southern continuous viewing zone

Mara Bernizzoni, Timothy R. Bedding, Prasad Mani +5

We use Gaia DR3 astrometry and TESS time-series photometry to study NGC 1901, a sparse open cluster in the TESS Southern continuous viewing zone, that has been neglected due to its…

astro-ph.SR2026

Conspicuous Gas, Cryptic Dust: Spectroscopy and Chromaticity of Complex Periodic Variables

Luke G. Bouma, Facundo Perez Paolino, Lynne A. Hillenbrand +17

Complex periodic variables (CPVs) are young low-mass stars whose light curves show periodic dips indicative of transiting corotating material. The origin and composition of this ma…

astro-ph.SR2026

The TESS All-Sky Rotation Survey: Periods for 1,046,317 Stars Within 500 pc

Andrew W. Boyle, Luke G. Bouma, Andrew W. Mann

Stellar rotation is a fundamental tracer of stellar magnetic evolution, age, and activity, with broad implications for Galactic archaeology and exoplanet characterization. The Tran…

astro-ph.SR2026

Dust cloud lifetimes of Scallop-shell stars

Simon Daley-Yates, Moira M. Jardine, Luke Bouma

We investigate the survival of dust trapped in magnetically confined cool gas clouds (or {\it prominences}) around rapidly rotating M-dwarfs exhibiting the ``scallop-shell'' light-…

astro-ph.EP2026

The T16 Planet Hunt: 10,000 New Planet Candidates from TESS Cycle 1 and the Confirmation of a Hot Jupiter Around TIC 183374187

Joshua T. Roth, Joel D. Hartman, Gáspár Á. Bakos +12

The T16 project has produced a uniformly detrended and systematics-corrected set of 83,717,159 TESS Cycle 1 full-frame image light curves for stars observed by TESS in its primary…

astro-ph.SR2025★ 3 cited

Lost Sisters Found: TESS and Gaia Reveal a Dissolving Pleiades Complex

Andrew W. Boyle, Luke G. Bouma, Andrew W. Mann

Most star clusters dissolve into the Galaxy over tens to hundreds of millions of years after they form. While recent Gaia studies have honed our view of cluster dispersal, the exac…

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

The HD 60779 Planetary System: A Transiting Sub-Neptune on a 30-day Orbit and a More Massive Outer World

Victoria DiTomasso, David Charbonneau, Andrew Vanderburg +37

We present the discovery of the planetary system orbiting the bright (V = 7.2), nearby (35 pc), Sun-like star HD 60779, which has a mass of 1.050 +/- 0.044 solar masses and a radiu…

astro-ph.SR2025★ 3 cited

Polarized, variable radio emission from the scallop-shell binary system DG CVn

Simranpreet Kaur, Daniele Viganò, Jackie Villadsen +9

DG CVn is an eruptive variable star and represents the closest member of the known sample of complex periodic variables, or scallop-shell stars. Over the years, this M dwarf binary…

astro-ph.IM2025

A Fast Bayesian Method for Coherent Gravitational Wave Searches with Relative Astrometry

Benjamin Zhang, Kris Pardo, Yijun Wang +3

Using relative stellar astrometry for the detection of coherent gravitational wave sources is a promising method for the microhertz range, where no dedicated detectors currently ex…

astro-ph.SR2025

A Plasma Torus Around a Young Low-Mass Star

Luke G. Bouma, Moira M. Jardine

A small fraction of red dwarfs younger than 100 million years show structured, periodic optical light curves suggestive of transiting opaque material that corotates with the star.…

astro-ph.SR2025

The T16 Project: Image Subtraction Light Curves from TESS Cycle 1 Full-Frame Images for Stars with T < 16

Joel Hartman, Gáspár Bakos, Luke G. Bouma +1

We present 83,717,159 light curves for 56,401,549 stars with T < 16 mag observed in the Full-Frame Images (FFIs) of Cycle 1 of the NASA TESS mission. These light curves were extrac…

astro-ph.EP2025

Planet Masses, Radii, and Orbits from NASA's K2 Mission

Andrew W. Howard, Evan Sinukoff, Sarah Blunt +50

We report the masses, sizes, and orbital properties of 86 planets orbiting 55 stars observed by NASA's K2 Mission with follow-up Doppler measurements by the HIRES spectrometer at t…

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)…

astro-ph.EP2024★ 3 cited

A joint effort to discover and characterize two resonant mini Neptunes around TOI-1803 with TESS, HARPS-N and CHEOPS

T. Zingales, L. Malavolta, L. Borsato +130

We present the discovery of two mini Neptunes near a 2:1 orbital resonance configuration orbiting the K0 star TOI-1803. We describe their orbital architecture in detail and suggest…

astro-ph.SR2024

Ages of Stars and Planets in the Kepler Field Younger Than Four Billion Years

Luke G. Bouma, Lynne A. Hillenbrand, Andrew W. Howard +3

Recent analyses of FGK stars in open clusters have helped clarify the precision with which a star's rotation rate and lithium content can be used as empirical indicators for its ag…

astro-ph.SR2024★ 6 cited

Confirming the Tidal Tails of the Young Open Cluster Blanco 1 with TESS Rotation Periods

Lizhou Sha, Andrew M. Vanderburg, Luke G. Bouma +1

Blanco 1 is an open cluster located 240 pc from the Sun below the Galactic plane. Recent studies have reported the existence of diffuse tidal tails exte…

astro-ph.EP2024★ 4 cited

A transiting multi-planet system in the 61 million year old association Theia 116

Sydney Vach, George Zhou, Chelsea X. Huang +28

Observing and characterizing young planetary systems can aid in unveiling the evolutionary mechanisms that sculpt the mature exoplanet population. As an all-sky survey, NASA's Tran…

astro-ph.SR2024★ 1 cited

SPYGLASS. V. Spatially and Temporally Structured Star-Forming Environments in the Cepheus-Hercules Complex

Ronan Kerr, Adam L. Kraus, Daniel Krolikowski +2

Young associations record complete histories of star forming events through their demographics and dynamics, and Gaia has greatly expanded our knowledge of these associations. We p…

astro-ph.SR2024

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…

astro-ph.EP2024

TESS Hunt for Young and Maturing Exoplanets (THYME) X: a two-planet system in the 210 Myr MELANGE-5 Association

Pa Chia Thao, Andrew W. Mann, Madyson G. Barber +35

Young (<500 Myr) planets are critical to studying how planets form and evolve. Among these young planetary systems, multi-planet configurations are particularly useful as they prov…

astro-ph.EP2024★ 1 cited

The TEMPO Survey II: Science Cases Leveraged from a Proposed 30-Day Time Domain Survey of the Orion Nebula with the Nancy Grace Roman Space Telescope

Melinda Soares-Furtado, Mary Anne Limbach, Andrew Vanderburg +26

The TEMPO (Transiting Exosatellites, Moons, and Planets in Orion) Survey is a proposed 30-day observational campaign using the Nancy Grace Roman Space Telescope. By providing deep,…