CO bands in V4334 Sgr (Sakurai's Object): The 12C/13C ratio

Ya V. Pavlenko; T. R. Geballe; B. Smalley; S. P. S. Eyres; V. H. Tyne; L. A. Yakovina; A. Evans

doi:10.1051/0004-6361:20040078

CO bands in V4334 Sgr (Sakurai's Object): The 12C/13C ratio

Ya V. Pavlenko, T. R. Geballe, B. Smalley, S. P. S. Eyres, V. H. Tyne, L. A. Yakovina, A. Evans

Faculty of Computing, Engineering and Science

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

Abstract

We present the results of our analysis of a high resolution (R≃30 000) infrared spectrum of V4334 Sgr (Sakurai's Object) around the first overtone CO bands, obtained in 1998 July. The 12CO and 13CO bands are well-resolved, and we compute synthetic hydrogen-deficient model atmosphere spectra to determine the 12C/13C ratio. We find 12C/13C ≃ 4 ± 1, consistent with the interpretation of V4334 Sgr as an object that has undergone a very late thermal pulse.

Original language	English
Pages (from-to)	L39-L43
Journal	Astronomy and Astrophysics
Volume	417
Issue number	3
DOIs	https://doi.org/10.1051/0004-6361:20040078
Publication status	Published - 1 Apr 2004

Keywords

stars: individual (V4334 Sqr)
stars: individual: Sakurai's Object
stars: atmospheric parameters
stars: abundance

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10.1051/0004-6361:20040078Licence: CC BY-NC-ND

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title = "CO bands in V4334 Sgr (Sakurai's Object): The 12C/13C ratio",

abstract = "We present the results of our analysis of a high resolution (R≃30 000) infrared spectrum of V4334 Sgr (Sakurai's Object) around the first overtone CO bands, obtained in 1998 July. The 12CO and 13CO bands are well-resolved, and we compute synthetic hydrogen-deficient model atmosphere spectra to determine the 12C/13C ratio. We find 12C/13C ≃ 4 ± 1, consistent with the interpretation of V4334 Sgr as an object that has undergone a very late thermal pulse.",

keywords = "stars: individual (V4334 Sqr), stars: individual: Sakurai's Object, stars: atmospheric parameters, stars: abundance ",

author = "Pavlenko, {Ya V.} and Geballe, {T. R.} and B. Smalley and Eyres, {S. P. S.} and Tyne, {V. H.} and Yakovina, {L. A.} and A. Evans",

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doi = "10.1051/0004-6361:20040078",

language = "English",

volume = "417",

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journal = "Astronomy and Astrophysics",

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TY - JOUR

T1 - CO bands in V4334 Sgr (Sakurai's Object): The 12C/13C ratio

AU - Pavlenko, Ya V.

AU - Geballe, T. R.

AU - Smalley, B.

AU - Eyres, S. P. S.

AU - Tyne, V. H.

AU - Yakovina, L. A.

AU - Evans, A.

PY - 2004/4/1

Y1 - 2004/4/1

N2 - We present the results of our analysis of a high resolution (R≃30 000) infrared spectrum of V4334 Sgr (Sakurai's Object) around the first overtone CO bands, obtained in 1998 July. The 12CO and 13CO bands are well-resolved, and we compute synthetic hydrogen-deficient model atmosphere spectra to determine the 12C/13C ratio. We find 12C/13C ≃ 4 ± 1, consistent with the interpretation of V4334 Sgr as an object that has undergone a very late thermal pulse.

AB - We present the results of our analysis of a high resolution (R≃30 000) infrared spectrum of V4334 Sgr (Sakurai's Object) around the first overtone CO bands, obtained in 1998 July. The 12CO and 13CO bands are well-resolved, and we compute synthetic hydrogen-deficient model atmosphere spectra to determine the 12C/13C ratio. We find 12C/13C ≃ 4 ± 1, consistent with the interpretation of V4334 Sgr as an object that has undergone a very late thermal pulse.

KW - stars: individual (V4334 Sqr)

KW - stars: individual: Sakurai's Object

KW - stars: atmospheric parameters

KW - stars: abundance

U2 - 10.1051/0004-6361:20040078

DO - 10.1051/0004-6361:20040078

M3 - Article

SN - 0004-6361

VL - 417

SP - L39-L43

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 3

ER -

CO bands in V4334 Sgr (Sakurai's Object): The 12C/13C ratio

Abstract

Keywords

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