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19 papers · 1 filter
The erosion of large primary atmospheres typically leaves behind substantial secondary atmospheres on temperate rocky planets
Joshua Krissansen-Totton, Nicholas Wogan, Maggie Thompson +1
Exoplanet exploration has revealed that many$\unicode{x2013}$perhaps most$\unicode{x2013}$terrestrial exoplanets formed with substantial H-rich envelopes, seemingly in contrast…
Resolving Twin Jets and Twin Disks with JWST and ALMA: The Young WL 20 Multiple System
Mary Barsony, Michael E. Ressler, Valentin J. M. Le Gouellec +2
We report the discovery of jets emanating from pre-main-sequence objects exclusively at mid-infrared wavelengths, enabled by the superb sensitivity of JWST's Mid-InfraRed Medium-Re…
High-Order harmonics of Thermal Tides observed in the atmosphere of Mars by the Pressure Sensor on the Insight lander
J. Hernandez-Bernal, A. Spiga, F. Forget +1
Thermal tides are atmospheric planetary-scale waves with periods that are harmonics of the solar day. In the Martian atmosphere thermal tides are known to be especially significant…
First detection of the [CII] 158 micron line in the intermediate-velocity cloud Draco
N. Schneider, V. Ossenkopf-Okada, E. Keilmann +7
High-latitude intermediate-velocity clouds (IVCs) are part of the Milky Way's HI halo and originate from either a galactic fountain process or extragalactic gas infall. They are pa…
High Contrast, High Angular Resolution Optical Speckle Imaging: Uncovering Hidden Stellar Companions
Steve B. Howell, Arturo O. Martinez, Douglas A. Hope +4
We explore the possibility of detecting very faint, very close-in stellar companions using large aperture ground-based telescopes and the technique of optical speckle imaging. We e…
Methane Emission From a Cool Brown Dwarf
Jacqueline K. Faherty, Ben Burningham, Jonathan Gagné +21
Beyond our solar system, aurorae have been inferred from radio observations of isolated brown dwarfs (e.g. Hallinan et al. 2006; Kao et al. 2023). Within our solar system, giant pl…