Examinando por Autor "Banerjee, D.P.K."

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    Unraveling the Infrared Transient VVV-WIT-06: The Case for the Origin as a Classical Nova
    (Institute of Physics Publishing, 2018-11) Banerjee, D.P.K.; Hsiao, E.Y.; Diamond, T.; Galbany, L.; Morrell, N.; Minniti, D.; Kuncarayakti, H.; Mattila, S.; Harmanen, J.
    The enigmatic near-infrared transient VVV-WIT-06 underwent a large-amplitude eruption of unclear origin in 2013 July. Based on its light curve properties and late-time post-outburst spectra, various possibilities have been proposed in the literature for the origin of the object, namely a Type I supernova, a classical nova (CN), or a violent stellar merger event. We show that, of these possibilities, an origin in a CN outburst convincingly explains the observed properties of VVV-WIT-06. We estimate that the absolute K-band magnitude of the nova at maximum was M k = -8.2 ±0.5, its distance d = 13.35 ±2.18 kpc, and the extinction A v = 15.0 ±0.55 mag. © 2018. The American Astronomical Society. All rights reserved.