activity
20242026
most citedThe Solar Neighborhood LI: A Variability Survey of Nearby M Dwarfs with Planets from Months to Decades with TESS and the CTIO/SMARTS 0.9 m Telescope

9 citations · 13 across the 6 of their papers we have counts for

collaborators

7 papers

astro-ph.SR2026

The Solar Neighborhood LVI: The RMSTAR Catalog of the Nearest 3352 M Dwarf Systems and 305 of their Wide Companions

Madison R. LeBlanc, Tim M. Johns, Todd J. Henry +8

We present the RMSTAR (RECONS M STAR) catalog, a 25 pc volume-limited and effectively volume-complete sample of the nearest 3352 M dwarf systems and their 305 wide stellar and 9 br…

astro-ph.SR2026

The Debris Disk Host Piscis Austrinus is a Rapidly Rotating Star Seen Nearly Pole-On

Colin Kane, Russel White, Jeremy Jones +6

Previous studies of Piscis Austrinus (PsA) have speculated that the narrow and saddle-like shapes of some of its weak metallic lines are a consequence of it being a rapidly rot…

astro-ph.EP2025

Are We There Yet? Challenges in Quantifying the Frequency of Earth Analogs in the Habitable Zone

Rachel B. Fernandes, Samson Johnson, Galen J. Bergsten +43

Searching for life elsewhere in the universe is one of the most highly prioritized pursuits in astronomy today. However, the ability to observe evidence of Earth-like life through…

astro-ph.SR2025★ 1 cited

The Solar Neighborhood. LV. M Dwarf Twin Binaries -- One in Five Twin Sibling Pairs Are Mismatched in Activity and/or Rotation

Andrew A. Couperus, Todd J. Henry, Aman Kar +3

We report on a study of 36 pairs of `twin' M dwarfs in wide binaries and assess how similarly the stars behave. Stars in each twin pair have BP, RP, , , and differing b…

astro-ph.SR2025

TESS Light Curve of the Interacting Binary W Serpentis

Douglas R. Gies, Katherine A. Shepard, Aman Kar +1

The unusual light curve of the massive eclipsing binary W Ser was recently observed with high S/N and fast cadence by the NASA TESS mission. The TESS light curve records two eclips…

astro-ph.SR2024★ 3 cited

The Solar Neighborhood LII: M Dwarf Twin Binaries -- Presumed Identical Twins Appear Fraternal in Variability, Rotation, H, and X-rays

Andrew A. Couperus, Todd J. Henry, Rachel A. Osten +4

We present an investigation into the rotation and stellar activity of four fully convective M dwarf `twin' wide binaries. Components in each pair have (1) astrometry confirming the…

astro-ph.SR2024★ 9 cited

The Solar Neighborhood LI: A Variability Survey of Nearby M Dwarfs with Planets from Months to Decades with TESS and the CTIO/SMARTS 0.9 m Telescope

Aman Kar, Todd J. Henry, Andrew A. Couperus +2

We present the optical photometric variability of 32 planet-hosting M dwarfs within 25 parsecs over timescales of months to decades. The primary goal of this project, ATLAS -- A Tr…