331 citations · 1.5k across the 25 of their papers we have counts for
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Cloud Atlas: Discovery of Patchy Clouds and High-amplitude Rotational Modulations In a Young, Extremely Red L-type Brown Dwarf
Ben W. P. Lew, Daniel Apai, Yifan Zhou +10
Condensate clouds fundamentally impact the atmospheric structure and spectra of exoplanets and brown dwarfs but the connections between surface gravity, cloud structure, dust in th…
Hot Gas Lines in T Tauri Stars
David R. Ardila, Gregory J. Herczeg, Scott G. Gregory +20
For Classical T Tauri Stars (CTTSs), the resonance lines of N V, Si IV, and C IV, as well as the He II 1640 A line, act as diagnostics of the accretion process. Here we assemble a…
Lyman alpha dominance of the Classical T Tauri FUV Radiation Field
Rebecca Schindhelm, Kevin France, Gregory Herczeg +6
Far-ultraviolet (FUV) radiation plays an important role in determining chemical abundances in protoplanetary disks. HI Lyman alpha is suspected to be the dominant component of the…
A Hubble Space Telescope Survey of H2 Emission in the Circumstellar Environments of Young Stars
Kevin France, Rebecca Schindhelm, Gregory J. Herczeg +8
The formation timescale and final architecture of exoplanetary systems are closely related to the properties of the molecular disks from which they form. Observations of the spatia…
A Far-ultraviolet Atlas of Low-resolution Hubble Space Telescope Spectra of T Tauri Stars
Hao Yang, Gregory J. Herczeg, Jeffrey L. Linsky +6
We present a far-ultraviolet (FUV) spectral atlas consisting of spectra of 91 pre-main sequence stars. Most stars in this sample were observed with the Space Telescope Imaging Spec…
NUV Excess in Slowly Accreting T Tauri Stars: Limits Imposed by Chromospheric Emission
Laura Ingleby, Nuria Calvet, Edwin Bergin +20
Young stars surrounded by disks with very low mass accretion rates are likely in the final stages of inner disk evolution and therefore particularly interesting to study. We presen…