77 citations · 97 across the 15 of their papers we have counts for
15 papers
Demographics of Close-In TESS Exoplanets Orbiting FGK Main-sequence Stars II. Spectral-Type Dependence and the Neptunian Landscape
Kaiming Cui, David J. Armstrong, Andreas Hadjigeorghiou +6
Understanding how planetary demographics depend on host star properties is essential for constraining planet formation and evolution theories. In this paper, we analyse close-in 0.…
The NUV transit of XO-3 b
Raven Cilley, Lia Corrales, George W. King +8
Near-UV (NUV) measurements of exoplanet transits offer a means to probe atmospheric escape, cloud formation, and planetary magnetic fields. We examine a 2024 XMM-Newton Optical Mon…
The puzzling story of flare inactive ultra fast rotating M dwarfs -- III. Investigating X-ray Activity
Lauren Doyle, George W. King, Gavin Ramsay +4
According to activity-rotation relations, rapid rotators are expected to show high levels of magnetic activity. However, recent studies with TESS have found Ultra Fast Rotating (UF…
LRG-BEASTS: Detection of sodium and evidence for water absorption in the hot Saturn HAT-P-44b
Alastair B. Claringbold, Peter J. Wheatley, James Kirk +5
We present the low-resolution optical transmission spectrum of the inflated hot Saturn HAT-P-44b. The planet is a close sibling in radius (1.24 ), temperature (11…
The Advanced X-ray Imaging Satellite (AXIS) Community Science Book
Michael Koss, Nafisa Aftab, Steven W. Allen +395
The AXIS Community Science Book represents the collective effort of 592 scientists worldwide to define the transformative science enabled by the Advanced X-ray Imaging Satellite (A…
The First Dedicated Survey of Atmospheric Escape from Planets Orbiting F Stars
Morgan Saidel, Shreyas Vissapragada, Heather Knutson +9
Hydrodynamic escape can strip the envelopes of close-in exoplanets, but most observations of atmospheric mass loss to date have been confined to planets orbiting K and M dwarfs. A…
Toward a 2D H I Map of the Local Interstellar Medium
Allison Youngblood, Kevin France, Tommi Koskinen +9
Obtaining a complete census of gas in the local interstellar medium (<100 pc) is challenging given the limited available tracers of the warm, partially-ionized medium. Medium-to-hi…
Stellar X-ray variability and planetary evolution in the DS Tucanae system
George W. King, Lía R. Corrales, Vincent Bourrier +5
We present an analysis of four Chandra observations of the 45 Myr old DS Tuc binary system. We observed X-ray variability of both stars on timescales from hours to months, includin…
Generating X-ray transit profiles with batman
George W. King, Lía R. Corrales, Peter J. Wheatley +2
We present an adaptation of the exoplanet transit model code batman, in order to permit the generation of X-ray transits. Our underlying extended coronal model assumes an isotherma…
High-energy spectra of LTT 1445A and GJ 486 reveal flares and activity
H. Diamond-Lowe, G. W. King, A. Youngblood +19
The high-energy radiative output, from the X-ray to the ultraviolet, of exoplanet host stars drives photochemical reactions and mass loss in the upper regions of planetary atmosphe…
Detecting exoplanet transits with the next generation of X-ray telescopes
Raven Cilley, George W. King, Lia Corrales
Detecting exoplanet transits at X-ray wavelengths would provide a window into the effects of high energy irradiation on the upper atmospheres of planets. However, stars are relativ…
Exoplanet Aeronomy: A Case Study of WASP-69b's Variable Thermosphere
W. Garrett Levine, Shreyas Vissapragada, Adina D. Feinstein +5
Aeronomy, the study of Earth's upper atmosphere and its interaction with the local space environment, has long traced changes in the thermospheres of Earth and other solar system p…
The XUV-driven escape of the planets around TOI-431 & Lupi
George W. King, Lía R. Corrales, Jorge Fernández Fernández +4
One of the leading mechanisms invoked to explain the existence of the radius valley is atmospheric mass loss driven by X-ray and extreme-ultraviolet irradiation, with this process…
The life cycle of stars and their planets from the high energy perspective
Lia Corrales, Keivan G. Stassun, Tim Cunningham +19
One of the key research themes identified by the Astro2020 decadal survey is Worlds and Suns in Context. The Advanced X-ray Imaging Satellite (AXIS) is a proposed NASA APEX mission…
Overview of the Advanced X-ray Imaging Satellite (AXIS)
Christopher S. Reynolds, Erin A. Kara, Richard F. Mushotzky +40
The Advanced X-ray Imaging Satellite (AXIS) is a Probe-class concept that will build on the legacy of the Chandra X-ray Observatory by providing low-background, arcsecond-resolutio…