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HST-STIS Spectra of Antares (α Scorpii: M1.5 Iab)—Type II Supernova Progenitor and Betelgeuse’s Chromospheric Twin

We present the first Hubble Space Telescope - Space Telescope Imaging Spectrograph (HST-STIS) far-ultraviolet (FUV) and near-ultraviolet (NUV) high-resolution spectra of the red supergiant (RSG) Antares (M1.5 Iab), isolated from its long-period B-star binary companion, and compare them to spectra of...

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Autori principali: Graham M. Harper, Thomas R. Ayres, Keiichi Ohnaka, Edward F. Guinan, Curtis DeWitt
Natura: Artigo
Lingua:Inglês
Pubblicazione: IOP Publishing 2026-01-01
Serie:The Astrophysical Journal
Soggetti:
Stellar chromospheres
M supergiant stars
Hubble Space Telescope
Ultraviolet spectroscopy
Stellar winds
Accesso online:https://doi.org/10.3847/1538-4357/ae581b
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