Revisiting the Helium and Hydrogen Accretion Indicators at TWA 27B: Weak Mass Flow at Near-freefall Velocity

TWA 27B (2M1207b) is the first directly imaged planetary-mass ( M _p ≈ 5 M _J ) companion and was observed at 0.9–5.3 μ m with ​​​JWST/NIRSpec. To understand the accretion properties of TWA 27B, we search for continuum-subtracted near-infrared helium and hydrogen emission lines and measure their wid...

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Bibliografische gegevens

Hoofdauteurs:	Gabriel-Dominique Marleau, Yuhiko Aoyama, Jun Hashimoto, Yifan Zhou
Formaat:	Artigo
Taal:	Inglês
Gepubliceerd in:	IOP Publishing 2024-01-01
Reeks:	The Astrophysical Journal
Onderwerpen:	Accretion H I line emission Planet formation James Webb Space Telescope Spectroscopy Hubble Space Telescope
Online toegang:	https://doi.org/10.3847/1538-4357/ad1ee9
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