Strong Variability in AzV 493, an Extreme Oe-type Star in the SMC

Strong Variability in AzV 493, an Extreme Oe-type Star in the SMC

We present 18 yr of OGLE photometry together with spectra obtained over 12 yr revealing that the early Oe star AzV 493 shows strong photometric (Δ I < 1.2 mag) and spectroscopic variability with a dominant, 14.6 yr pattern and ∼40 day oscillations. We estimate the stellar parameters T _eff = 42,0...

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Bibliographic Details
Main Authors: M. S. Oey, N. Castro, M. Renzo, I. Vargas-Salazar, M. W. Suffak, M. Ratajczak, J. D. Monnier, M. K. Szymanski, G. D. Phillips, N. Calvet, A. Chiti, G. Micheva, K. C. Rasmussen, R. H. D. Townsend
Format: Article
Language:English
Published: IOP Publishing 2023-01-01
Series:The Astrophysical Journal
Subjects:
Early-type stars
Oe stars
Be stars
Circumstellar disks
Interacting binary stars
Compact objects
Online Access:https://doi.org/10.3847/1538-4357/acb690

Internet

https://doi.org/10.3847/1538-4357/acb690

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