Open AccessThe absorption spectrum of V838 Mon in 2002 February–March – I. Atmospheric parameters and iron abundance
Author(s) -
Kaminsky Bogdan M.,
Pavlenko Yakiv V.
Publication year - 2005
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2004.08551.x
Subject(s) - physics , abundance (ecology) , astrophysics , absorption spectroscopy , absorption (acoustics) , astronomy , atomic physics , astrobiology , atmospheric sciences , optics , fishery , biology
We present a determination of the effective temperatures, iron abundances and microturbulent velocities for the pseudo‐photosphere of V838 Mon on 2002 February 25, and March 2 and 26. Physical parameters of the line‐forming region were obtained in the framework of a self‐consistent approach, using fits of synthetic spectra to observed spectra in the wavelength range 5500–6700 Å. We obtained T eff = 5330 ± 300, 5540 ± 270 and 4960 ± 190 K , for February 25, March 2, and March 26, respectively. The iron abundance log N (Fe) =−4.7 does not appear to change in the atmosphere of V838 Mon from 2002 February 25 to March 26.