Unraveling the Infrared Transient VVV-WIT-06: The Case for the Origin as a Classical Nova

D. P.K. Banerjee, E. Y. Hsiao, T. Diamond, L. Galbany, N. Morrell, D. Minniti, H. Kuncarayakti, S. Mattila, J. Harmanen

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number99
JournalAstrophysical Journal
Volume867
Issue number2
DOIs
Publication statusPublished - 10 Nov 2018

Keywords

  • infrared: stars
  • line: identification
  • novae, cataclysmic variables
  • stars: individual (VVV-WIT-06)
  • techniques: spectroscopic

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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