Journal of Astrophysics and Astronomy

, Volume 12, Issue 1, pp 27–37 | Cite as

Abundance analysis of the long period southern cepheid RZ Vel

  • Sunetra Giridhar
  • A. Arellano Ferro
  • Aruna Goswami


The long period classical cepheid RZ Vel (HD 73502) is known to be a member of an OB association, Vel OB1 in Vela, and a high metallicity is ascribed to it by the photometric work of Eggen (1982). We have done an abundance analysis for this long period (P = 20.4 days) and hence young (age ≈ 1.80×107 yr) classical cepheid using high resolution CCD spectra with good S/N ratio. We have used a detailed model atmosphere method to derive the abundances of the light elements C, O, A1, S and of many Fe-peak elements and a few s-process elements. Our present work indicates near solar abundance for most of the elements for RZ Vel and hence we do not confirm the high metallicity derived photometrically by Eggen (1982) for this star

Key words

classical cepheids, abundances OB association 


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Copyright information

© Indian Academy of Sciences 1991

Authors and Affiliations

  • Sunetra Giridhar
    • 1
  • A. Arellano Ferro
    • 2
  • Aruna Goswami
    • 3
  1. 1.Indian Institute of AstrophysicsBangalore
  2. 2.Institute de AstronomiaUniversidad Nacional Autonoma de MexicoMexico D. F.
  3. 3.Indian Institute of AstrophysicsBangalore

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