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The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 Micron Spectrum of the Planetary-Mass Companion VHS 1256-1257 b
Brittany E. Miles, Beth A. Biller, Polychronis Patapis +101
We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a 20 M widely separated (8\arcsec, a = 150 au), young, planetary-…
The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems I: High Contrast Imaging of the Exoplanet HIP 65426 b from 2-16 m
Aarynn L. Carter, Sasha Hinkley, Jens Kammerer +108
We present JWST Early Release Science (ERS) coronagraphic observations of the super-Jupiter exoplanet, HIP 65426 b, with the Near-Infrared Camera (NIRCam) from 2-5 m, and with t…
GJ 229B: Solving the Puzzle of the First Known T-Dwarf with the APOLLO Retrieval Code
Alex R. Howe, Michael W. McElwain, Avi M. Mandell
GJ 229B was the first T-dwarf to be discovered in 1995, and its spectrum has been more thoroughly observed than most other brown dwarfs. Yet a full spectroscopic analysis of its at…
A Multi-Planet System's Sole Super-Puff: Exploring Allowable Physical Parameters for the Cold Super-Puff HIP 41378 f
Michelle Belkovski, Juliette Becker, Alex Howe +2
The census of known exoplanets exhibits a variety of physical parameters, including densities that are measured to span the range from less dense than styrofoam to more dense than…
Cloud Continents: Terraforming Venus Efficiently by Means of a Floating Artificial Surface
Alex R. Howe
The similarity of Venus and Earth in bulk properties make Venus an appealing target for future colonization. Several proposals have been put forward for colonizing and even terrafo…