EDP Sciences
Free access
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)

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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