The properties of V838 Monocerotis in 2002 November

Ya V. Pavlenko, J. Th Van Loon, A. Evans, M. T. Rushton, B. M. Kaminsky, A. V. Filippenko, R. J. Foley, W. Li, B. Smalley, L. A. Yakovina

Research output: Contribution to journalArticle

Abstract

We present the results of modelling the 0.45-1 μm spectral energy distribution of V838 Mon for 2002 November. Synthetic spectra were calculated using the NextGen model atmospheres of Hauschildt et al. (1999, ApJ, 512, 377), which incorporate line lists for H2O, TiO, CrH, FeH, CO, and MgH, as well as the VALD atomic line list. Fits to the observed spectra show that, in 2002 November, the effective temperature of V838 Mon was approximately 2000 ± 100 K. Our theoretical spectra show a comparatively weak dependence on log g. Preliminary analysis of the hot star observed together with V838 Mon shows it to be a normal B3V dwarf.

Original languageEnglish (US)
Pages (from-to)245-250
Number of pages6
JournalAstronomy and Astrophysics
Volume460
Issue number1
DOIs
StatePublished - Dec 2006

Keywords

  • Stars: atmospheres
  • Stars: evolution
  • Stars: individual: V838 Mon

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Pavlenko, Y. V., Van Loon, J. T., Evans, A., Rushton, M. T., Kaminsky, B. M., Filippenko, A. V., Foley, R. J., Li, W., Smalley, B., & Yakovina, L. A. (2006). The properties of V838 Monocerotis in 2002 November. Astronomy and Astrophysics, 460(1), 245-250. https://doi.org/10.1051/0004-6361:20065503