EDP Sciences
Free access
Issue
A&A
Volume 416, Number 3, March IV 2004
Page(s) 1107 - 1115
Section Stellar atmospheres
DOI http://dx.doi.org/10.1051/0004-6361:20031385


A&A 416, 1107-1115 (2004)
DOI: 10.1051/0004-6361:20031385

The peculiar variable V838 Monocerotis

T. Kipper1, V. G. Klochkova2, K. Annuk1, A. Hirv1, I. Kolka1, L. Leedjärv1, A. Puss1, P. Skoda3 and M. Slechta3

1  Tartu Observatory, Tõravere 61602, Estonia
2  Special Astrophysical Observatory, Nizhnij Arkhyz 369167, Russia Isaac Newton Institute of Chile, SAO Branch
    e-mail: valenta@sao.ru
3  Astronomical Institute CAS, Ondrejov 25165, Czech Republic
    e-mail: skoda@pleione.asu.cas.cz

(Received 6 June 2003 / Accepted 25 August 2003)

Abstract
Spectroscopic observations of the peculiar variable V838 Mon during the period from the second light outburst until the fast dimming are presented. We describe high resolution $(R\approx60\,000)$ high  S/N spectra obtained a day before the second light maximum and low resolution $(R\approx6000)$ spectra covering the whole period. The temporal run of intensities and radial velocities of various lines is presented. Using $\ion{Na}{i}$ D IS lines we determine the reddening distance of V838 Mon d>3.1 kpc, and kinematic distance  d>4 kpc. We estimate that V838 Mon is slightly metal deficient but otherwise has a quite solar-like chemical composition except for enhanced abundances of Li, Ba and La.


Key words: stars: variables: general -- stars: novae, cataclysmic variables -- stars: individual: V838 Mon

Offprint request: T. Kipper, tk@aai.ee

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