Abundance analyses of the new R Coronae Borealis stars ASAS-RCB-8 and ASAS-RCB-10

B. P. Hema, Gajendra Pandey, Devika Kamath, N. Kameswara Rao, David Lambert, Vincent M. Woolf

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Abundance analyses of the two newly discovered R Coronae Borealis (RCB) stars ASAS-RCB-8 and ASAS-RCB-10 were conducted using high-resolution optical spectra and model atmospheres. Their chemical compositions place the pair among the majority class of RCBs. ASAS-RCB-10 is one of the most N-poor majority RCBs with an above average O abundance. Relative to ASAS-RCB-10, ASAS-RCB-8 is H poor by 1.6 dex, O-poor by 0.7 dex but N-rich by 0.8 dex suggesting a higher contamination by CNO-cycled material.

Original languageEnglish
Article number104202
Pages (from-to)1-8
Number of pages8
JournalPublications of the Astronomical Society of the Pacific
Volume129
Issue number980
DOIs
Publication statusPublished - 1 Oct 2017

Keywords

  • stars: abundances
  • stars: chemically peculiar
  • stars: distances

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