135 citations · 1.7k across the 52 of their papers we have counts for
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The High-Energy Spectrum of the Young Planet Host V1298 Tau
Girish M. Duvvuri, P. Wilson Cauley, Fernando Cruz Aguirre +4
V1298 Tau is a young pre-main sequence star hosting four known exoplanets that are prime targets for transmission spectroscopy with current-generation instruments. This work pieces…
The Radial Distribution and Excitation of H2 around Young Stars in the HST-ULLYSES Survey
Kevin France, Nicole Arulanantham, Erin Maloney +8
The spatial distribution and evolution of gas in the inner 10 au of protoplanetary disks form the basis for estimating the initial conditions of planet formation. Among the most im…
Flares, Rotation, Activity Cycles and a Magnetic Star-Planet Interaction Hypothesis for the Far Ultraviolet Emission of GJ 436
R. O. Parke Loyd, P. C. Schneider, James A. G. Jackman +6
Variability in the far ultraviolet (FUV) emission produced by stellar activity affects photochemistry and heating in orbiting planetary atmospheres. We present a comprehensive anal…
Two substellar survivor candidates; one found and one missing
N. Walters, J. Farihi, T. R. Marsh +4
This study presents observations of two possible substellar survivors of post-main sequence engulfment, currently orbiting white dwarf stars. Infrared and optical spectroscopy of G…
AU Microscopii in the FUV: Observations in Quiescence, During Flares, and Implications for AU Mic b and c
Adina D. Feinstein, Kevin France, Allison Youngblood +13
High energy X-ray and ultraviolet (UV) radiation from young stars impacts planetary atmospheric chemistry and mass loss. The active Myr M dwarf AU Mic hosts two exoplanet…
Solar Hα excess during Solar Cycle 24 from full-disk filtergrams of the Chromospheric Telescope
A. Diercke, C. Kuckein, P. W. Cauley +4
The chromospheric H-alpha spectral line is a strong line in the spectrum of the Sun and other stars. In the stellar regime, this spectral line is already used as a powerful tracer…
A CO-to-H ratio of towards the Herbig Ae star HK Ori
P. Wilson Cauley, Kevin France, Gregory J. Herzceg +1
Measurements of gas mass in protoplanetary gas disks form the basis for estimating the conditions of planet formation. Among the most important constraints derived from disk diagno…
Estimating the Ultraviolet Emission of M dwarfs with Exoplanets from Ca II and H
Katherine Melbourne, Allison Youngblood, Kevin France +29
M dwarf stars are excellent candidates around which to search for exoplanets, including temperate, Earth-sized planets. To evaluate the photochemistry of the planetary atmosphere,…
Constraining Stellar Photospheres as an Essential Step for Transmission Spectroscopy of Small Exoplanets
Benjamin V. Rackham, Arazi Pinhas, Dániel Apai +29
Transmission spectra probe the atmospheres of transiting exoplanets, but these observations are also subject to signals introduced by magnetic active regions on host stars. Here we…
Multi-wavelength observations of the EUV variable metal-rich white dwarf GD 394
David J. Wilson, Boris T. Gaensicke, Detlev Koester +13
We present new Hubble Space Telescope (HST) ultraviolet and ground-based optical observations of the hot, metal-rich white dwarf GD 394. Extreme-ultraviolet (EUV) observations in 1…
Evidence for eccentric, precessing gaseous debris in the circumstellar absorption towards WD 1145+017
P. Wilson Cauley, Jay Farihi, Seth Redfield +3
We present time-series spectra revealing changes in the circumstellar line profiles for the white dwarf WD 1145+017. Over the course of 2.2 years, the spectra show complete velocit…
Linking Signatures of Accretion with Magnetic Field Measurements - Line Profiles are not Significantly Different in Magnetic and Non-Magnetic Herbig Ae/Be Stars
Megan Reiter, Nuria Calvet, Thanawuth Thanathibodee +6
Herbig Ae/Be stars are young, pre-main-sequence stars that sample the transition in structure and evolution between low- and high-mass stars, providing a key test of accretion proc…
Investigating the origin of hot gas lines in Herbig Ae/Be Stars
P. Wilson Cauley, Christopher M. Johns-Krull
We analyze high-resolution UV spectra of a small sample of Herbig Ae/Be stars (HAEBES) in order to explore the origin of the K gas in these stars. The C IV 1548,1550 Å…
Optical Mass Flow Diagnostics in Herbig Ae/Be Stars
P. Wilson Cauley, Christopher Johns-Krull
We examine a broad range of mass flow diagnostics in a large sample of Herbig Ae/Be stars (HAEBES) using high resolution optical spectra. The H-beta and He I 5876 angstrom lines sh…
Diagnosing Mass Flows Around Herbig Ae/Be Stars Using the He I 10830 Line
P. Wilson Cauley, Christopher M. Johns-Krull
We examine He I 10830 profile morphologies for a sample of 56 Herbig Ae/Be stars (HAEBES). We find significant differences between HAEBES and CTTSs in the statistics of both blue-s…
Testing Disk-Locking in NGC 2264
P. Wilson Cauley, Christopher M. Johns-Krull, Catrina M. Hamilton +1
We test analytic predictions from different models of magnetospheric accretion, which invoke disk-locking, using stellar and accretion parameters derived from models of low resolut…