Detection of Atmospheric Escape from Four Young Mini-Neptunes

We use Keck/NIRSPEC to survey a sample of of young (<1 Gyr), short-period mini-Neptunes orbiting nearby K dwarfs to measure their mass loss via the metastable helium line. We detect helium absorption from all four of the targets in our initial sample. The first detection, around TOI 560b, was ann...

Full description

Bibliographic Details
Published in:The Astronomical Journal
Main Authors: Michael Zhang, Heather A. Knutson, Fei Dai, Lile Wang, George R. Ricker, Richard P. Schwarz, Christopher Mann, Karen Collins
Format: Article
Language:English
Published: IOP Publishing 2023-01-01
Subjects:
Online Access:https://doi.org/10.3847/1538-3881/aca75b