First overtone CO bands in the giant component of RS Ophiuchi: The 12C/13C ratio in 2008

Ya V. Pavlenko, Charles E. Woodward, M. T. Rushton, B. Kaminsky, A. Evans

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

We present an analysis of a high-resolution (R ≅ 40 000) infrared spectrum of the RS Oph secondary around the first overtone CO bands, obtained in 2008 May on the Gemini-South 8 m telescope. The 12CO and 13CO bands are well resolved, and we compute synthetic spectra to determine the 12C/13C ratio. We find 12C/13C ≅ 16 ± 3, consistent with the interpretation of the secondary as a red giant which has evolved beyond the first dredge-up phase of evolution.

Original languageEnglish (US)
Pages (from-to)206-211
Number of pages6
JournalMonthly Notices of the Royal Astronomical Society
Volume404
Issue number1
DOIs
StatePublished - May 1 2010

Keywords

  • Binaries: Symbiotic
  • Cataclysmic variables
  • Novae
  • Stars: Abundances
  • Stars: Individual: RS Oph

Fingerprint Dive into the research topics of 'First overtone CO bands in the giant component of RS Ophiuchi: The <sup>12</sup>C/<sup>13</sup>C ratio in 2008'. Together they form a unique fingerprint.

  • Cite this