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

doi:10.1111/j.1365-2966.2010.16329.x

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

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

7 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 language	English (US)
Pages (from-to)	206-211
Number of pages	6
Journal	Monthly Notices of the Royal Astronomical Society
Volume	404
Issue number	1
DOIs	https://doi.org/10.1111/j.1365-2966.2010.16329.x
State	Published - May 2010

Keywords

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

Publisher link

10.1111/j.1365-2966.2010.16329.x

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

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.",

keywords = "Binaries: Symbiotic, Cataclysmic variables, Novae, Stars: Abundances, Stars: Individual: RS Oph",

author = "Pavlenko, \{Ya V.\} and Woodward, \{Charles E.\} and Rushton, \{M. T.\} and B. Kaminsky and A. Evans",

year = "2010",

month = may,

doi = "10.1111/j.1365-2966.2010.16329.x",

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journal = "Monthly Notices of the Royal Astronomical Society",

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T1 - First overtone CO bands in the giant component of RS Ophiuchi

T2 - The 12C/13C ratio in 2008

AU - Pavlenko, Ya V.

AU - Woodward, Charles E.

AU - Rushton, M. T.

AU - Kaminsky, B.

AU - Evans, A.

PY - 2010/5

Y1 - 2010/5

N2 - 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.

AB - 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.

KW - Binaries: Symbiotic

KW - Cataclysmic variables

KW - Novae

KW - Stars: Abundances

KW - Stars: Individual: RS Oph

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DO - 10.1111/j.1365-2966.2010.16329.x

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