SPECTROSCOPIC INVESTIGATIONS OF CEPHEIDS IN CARINA

Автор(и)

  • I. A. Usenko Astronomical Observatory, Odessa National University, T.G. Shevchenko Park, Odessa 65014, Ukraine, Ukraine
  • L. N. Berdnikov Sternberg Astronomical Institute, Moscow University, Moscow 119899, Russia;, Russian Federation
  • V. V. Kravtsov Sternberg Astronomical Institute, Moscow University, Moscow 119899, Russia; Universidad Catolica del Norte, Avenida Angamos 0610, Autofagasta, Chile;, Russian Federation
  • A. Yu. Knyazev South African Large Telescope, P.O. Box 9, Observatory, Cape Town 7935, South Africa, South Africa
  • R. Chini Astronomisches Institut, Ruhr-Universitat Bohum, Bohum 44780, Germany; Universidad Catolica del Norte, Avenida Angamos 0610, Autofagasta, Chile;, Germany
  • V. H. Hoffmeister Astronomisches Institut, Ruhr-Universitat Bohum, Bohum 44780, Germany;, Germany
  • O. Stahl Landessternwarte, Heidelberg, Germany, Germany
  • H. Drass Astronomisches Institut, Ruhr-Universitat Bohum, Bohum 44780, Germany;, Germany

DOI:

https://doi.org/10.18524/1810-4215.2010.23.85253

Ключові слова:

Stars, Cepheids, individual, WW Car, SX Car, UZ Car, UY Car, GX Car, HW Car, YZ Car.

Анотація

Spectroscopic investigations of seven
southern CepheidsWWCar, SX Car, UZ Car, UY Car,
GX Car, HW Car and YZ Car have been performed. It
was founded out six objects have metallicities, close to
solar one and their CNO-, odd elements and Mg content
indicate that these objects are on the stage after
the first dredge-up. CepheidWWCar is an unusual objects
because it has noticeable overabundance of [C/H]
= +0.3 dex, [N/H] = +0.95 dex, whereas sodium in
deficient ([Na/H] = -0.46 dex), and magnesium content
is the largest ([Mg/H] = -0.12 dex) in comparison
with other objects from this list having close pulsation
periods.

Посилання

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Опубліковано

2010-12-02

Номер

Том 23 (2010)

Розділ

Статті

Ліцензія

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Відповідно Закону України про авторське право і суміжні права N 3792-XII від 23 грудня 1993 року