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The Slow Brightening of WNTR23bzdiq/WTP19aalzlk: Possible Onset of Common Envelope Evolution in an Asymptotic Giant Branch Star?

We present WNTR23bzdiq/WTP19aalzlk, a slow eruption of an early-asymptotic giant branch (AGB) star in M31 identified by the Wide-field Infrared Transient Explorer near-infrared (NIR) and the NEOWISE mid-infrared (MIR) surveyors. This source brightened gradually over 7 yr: a 0.5 mag optical rise (201...

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Principais autores: Viraj R. Karambelkar, Mansi M. Kasliwal, Kishalay De, Danielle Frostig, Robert Stein, Geoffrey Mo, Nathan P. Lourie, Robert A. Simcoe, Nadejda Blagorodnova
Format: Artigo
Sprog:Inglês
Udgivet: IOP Publishing 2025-01-01
Serier:The Astrophysical Journal
Fag:
Common envelope evolution
Asymptotic giant branch stars
Infrared astronomy
Close binary stars
Transient sources
Online adgang:https://doi.org/10.3847/1538-4357/ae00bc
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