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Detection of persistent helium absorption in the 91bg-like Type Ia supernova 2022an
Ping Chen, A. Gal-Yam, Subo Dong, Renyue Cen, Boaz Katz, Kate Maguire, Steve Schulze, Jesper Sollerman, J. P. Anderson, T. Petrushevska
Izvirni znanstveni članek
Oznake: Type Ia supernova;SN 2022an;91bg-like supernova;fast-declining supernova;helium absorption;near-infrared spectroscopy;optical spectroscopy;supernova ejecta;thermonuclear explosion;
We present optical and near-infrared (NIR) observations of the fast-declining Type Ia supernova (SN Ia) 2022an. The photometric and spectroscopic properties identify it as a standard 91bg-like event; however, our data reveal a relatively narrow absorption feature with a full width at half-maximum (F ...
Leto: 2026 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
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