The properties of V838 Mon in 2002 November

Details The properties of V838 Mon in 2002 November The properties of V838 Mon in 2002 November

2006-09-08

arxiv.org/abs/astro-ph/0609225v1

Astronomy and Astrophysics

Astrophysics

7 pages, 4 figs, accepted by A&A

Scientific paper

10.1051/0004-6361:20065503

We present the results of modelling the 0.45--1 micron spectral energy distribution of V838 Mon for 2002 November. Synthetic spectra were calculated using the NextGen model atmospheres of Hauschildt et al. (1999), 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.

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