125 citations · 608 across the 20 of their papers we have counts for
20 papers
Early Exploration of the Scientific Discovery Space for the Habitable Worlds Observatory
Courtney D. Dressing, Danica Adams, Evelyne Alecian +324
The Habitable Worlds Observatory (HWO) is a future NASA flagship mission concept identified by the Astro2020 Decadal Survey as the highest priority for large space missions. HWO sh…
Hints of enhanced magnetic activity after the intermediate rotation period gap as traced by the chromospheric Ca ii infrared triplet
Diego Godoy-Rivera, Savita Mathur, Tyler Richey-Yowell +5
For low-mass stars (M < 1.4 Msun), the connection between stellar rotation and magnetic activity governs stellar spin-down, shapes the environments of their exoplanets, and provide…
A Critical UV Legacy: A Hubble Roadmap for HWO Science Readiness
Sarah Peacock, Aiden S. Zelakewicz, Lisa Kaltenegger +14
The Habitable Worlds Observatory (HWO) will provide the first opportunity to directly image and spectrally characterize terrestrial exoplanets in the habitable zones of nearby star…
Mining the Kepler Field: Atmospheric Parameters, Bolometric Corrections, and Luminosities
Diego Godoy-Rivera, Desmond H. Grossmann, Tyler Richey-Yowell +3
The ~ 200,000 stars observed by the Kepler mission have provided unprecedented constraints across astrophysics. With the advent of modern spectroscopic and photometric surveys, new…
HWO Target Stars and Systems: A Survey of Archival UV and X-ray Data
Sarah Peacock, David J. Wilson, Tyler Richey-Yowell +14
We assess archival high-energy data for key stars on the Habitable Worlds Observatory (HWO) Target Stars and Systems 2025 list, as stellar radiation is critical to shaping and inte…
Optically Quiet, But FUV Loud: Results from comparing the far-ultraviolet predictions of flare models with TESS and HST
James A. G. Jackman, Evgenya L. Shkolnik, R. O. Parke Loyd +1
The far-ultraviolet (FUV) flare activity of low-mass stars has become a focus in our understanding of the exoplanet atmospheres and how they evolve. However, direct detection of FU…
A Dragon's Flame of Many Colours: Multi-wavelength Observations of Flares from the Active M Binary CR Draconis
James A. G. Jackman, Evgenya L. Shkolnik, R. O. Parke Loyd +9
We present the results of a multi-wavelength Pro-Am campaign to study the behaviour of flares from the active M1.5V star binary CR Draconis. CR Dra was observed with TESS 20-s phot…
HAZMAT. IX. An Analysis of the UV and X-Ray Evolution of Low-Mass Stars in the Era of Gaia
Tyler Richey-Yowell, Evgenya L. Shkolnik, Adam C. Schneider +6
Low mass stars ( M) are some of the best candidates for hosting planets with detectable life because of these stars' long lifetimes and relative planet to star ma…
Hyades Member K2-136c: The Smallest Planet in an Open Cluster with a Precisely Measured Mass
Andrew W. Mayo, Courtney D. Dressing, Andrew Vanderburg +39
K2-136 is a late-K dwarf ( M) in the Hyades open cluster with three known, transiting planets and an age of Myr. Analyzing K2 photometry, we found…
Extending Optical Flare Models to the UV: Results from Comparing of TESS and GALEX Flare Observations For M Dwarfs
James A. G. Jackman, Evgenya Shkolnik, Chase Million +3
The ultraviolet (UV) emission of stellar flares may have a pivotal role in the habitability of rocky exoplanets around low-mass stars. Previous studies have used white-light observ…
Constraining the Physical Properties of Stellar Coronal Mass Ejections with Coronal Dimming: Application to Far Ultraviolet Data of Eridani
R. O. Parke Loyd, James Mason, Meng Jin +9
Coronal mass ejections (CMEs) are a prominent contributor to solar system space weather and might have impacted the Sun's early angular momentum evolution. A signal diagnostic of C…
HAZMAT. VIII. A Spectroscopic Analysis of the Ultraviolet Evolution of K Stars: Additional Evidence for K Dwarf Rotational Stalling in the First Gigayear
Tyler Richey-Yowell, Evgenya L. Shkolnik, R. O. Parke Loyd +7
Efforts to discover and characterize habitable zone planets have primarily focused on Sun-like stars and M dwarfs. K stars, however, provide an appealing compromise between these t…
Final Report for SAG 22: A Target Star Archive for Exoplanet Science
Natalie R. Hinkel, Joshua Pepper, Christopher C. Stark +33
Present and upcoming NASA missions will be intensively observing a selected, partially overlapping set of stars for exoplanet studies. Key physical and chemical information about t…
TESS Cycle 1 observations of roAp stars with 2-min cadence data
D. L. Holdsworth, M. S. Cunha, D. W. Kurtz +41
We present the results of a systematic search for new rapidly oscillating Ap (roAp) stars using the 2-min cadence data collected by the Transiting Exoplanet Survey Satellite (TESS)…
HAZMAT. VII. The Evolution of Ultraviolet Emission with Age and Rotation for Early M Dwarf Stars
R. O. Parke Loyd, Evgenya L. Shkolnik, Adam C. Schneider +6
The ultraviolet (UV) emission from the most numerous stars in the universe, M dwarfs, impacts the formation, chemistry, atmospheric stability, and surface habitability of their pla…
On the Correlation between L Dwarf Optical and Infrared Variability and Radio Aurorae
Tyler Richey-Yowell, Melodie M. Kao, J. Sebastian Pineda +2
Photometric variability attributed to cloud phenomena is common in L/T transition brown dwarfs. Recent studies show that such variability may also trace aurorae, suggesting that lo…
Current Population Statistics Do Not Favor Photoevaporation over Core-Powered Mass Loss as the Dominant Cause of the Exoplanet Radius Gap
R. O. P. Loyd, Evgenya L. Shkolnik, Adam C. Schneider +4
We search for evidence of the cause of the exoplanet radius gap, i.e. the dearth of planets with radii near . If the cause was photoevaporation, the radius gap shoul…
The first view of Scuti and Doradus stars with the TESS mission
V. Antoci, M. S. Cunha, D. M. Bowman +63
We present the first asteroseismic results for Scuti and Doradus stars observed in Sectors 1 and 2 of the TESS mission. We utilise the 2-min cadence TESS data for a sample…
Rotation and pulsation in Ap stars: first light results from TESS sectors 1 and 2
M. S. Cunha, V. Antoci, D. L. Holdsworth +36
We present the first results from the Transiting Exoplanet Survey Satellite (TESS) on the rotational and pulsational variability of magnetic chemically peculiar A-type stars. We an…
HAZMAT. V. The Ultraviolet and X-ray Evolution of K Stars
Tyler Richey-Yowell, Evgenya L. Shkolnik, Adam C. Schneider +3
Knowing the high-energy radiation environment of a star over a planet's formation and evolutionary period is critical in determining if that planet is potentially habitable and if…