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Astron. Astrophys. 329, 599-605 (1998)


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The unique galactic Cepheid V473 Lyrae revisited

S.M. Andrievsky 1, V.V. Kovtyukh 1, D. Bersier 2, 3, R.E. Luck 4, V.P. Gopka 5, A.V. Yushchenko 5 and I.A. Usenko 5

1 Department of Astronomy, Odessa State University, Shevchenko Park, 270014 Odessa, Ukraine
2 Mt Stromlo & Siding Spring Observatories, Private Bag, Weston Creek PO ACT 2611, Australia
3 Observatoire de Genève, CH-1290 Sauverny, Switzerland
4 Department of Astronomy, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106-7215, USA
5 Astronomical observatory, Odessa State University, Shevchenko Park, 270014 Odessa, Ukraine

Received 19 June 1997 / Accepted 22 August 1997

Abstract

We present elemental abundances found for the peculiar galactic Cepheid V473 Lyr. Results were obtained for 38 species of 32 chemical elements. We confirmed previous conclusion that this s-Cepheid is slightly underabundant in metals ([Fe/H]=-0.16). Carbon follows the usual rule to be deficient in the Cepheid atmospheres. No significant overabundance was detected for sodium. Other elements with determined abundances do not show any marked anomalies.

Atmospheric parameters of V473 Lyr derived in the present study are the following: Teff =6100 K, [FORMULA] =2.2, Vmicro =3.8 km s-1, [FORMULA] =4.5 [FORMULA].

Key words: stars: V 473 Lyr; abundances; cepheids; fundamental parameters

© European Southern Observatory (ESO) 1998

Online publication: December 8, 1997
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