The Spitzer Infrared Spectrometer view of V4334 Sgr (Sakurai's Object)

A. Evans; V. H. Tyne; J. T. van Loon; B. Smalley; T. R. Geballe; R. D. Gehrz; C. E. Woodward; A. A. Zijlstra; E. Polomski; M. T. Rushton; S. P S Eyres; S. G. Starrfield; J. Krautter; R. M. Wagner

doi:10.1111/j.1745-3933.2006.00246.x

The Spitzer Infrared Spectrometer view of V4334 Sgr (Sakurai's Object)

A. Evans, V. H. Tyne, J. T. van Loon, B. Smalley, T. R. Geballe, R. D. Gehrz, C. E. Woodward, A. A. Zijlstra, E. Polomski, M. T. Rushton, S. P S Eyres, S. G. Starrfield, J. Krautter, R. M. Wagner

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Abstract

We present an observation of the very late thermal pulse object V4334 Sgr (Sakurai's Object) with the Infrared Spectrometer (IRS) on the Spitzer Space Telescope. The emission from 5-38 μm is dominated by the still-cooling dust shell. A number of features are seen in absorption against the dust shell, which we attribute to HCN and polyyne molecules. We use these features to determine the 12C/13C ratio for the absorbing gas to be ~3.2+3.2-1.6, this implies that, despite the H-content of the molecules, the hydrocarbon-bearing gas must have originated in material produced in the very late thermal pulse. We see no evidence of emission lines, despite the recently-reported optical and radio observations that suggest the effective temperature of the stellar remnant is rising. © 2006 The Authors. Journal compilation © 2006 RAS.

Original language	English
Pages (from-to)	L75-L79
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	373
Issue number	1
DOIs	https://doi.org/10.1111/j.1745-3933.2006.00246.x
Publication status	Published - Nov 2006

Keywords

Circumstellar matter
Stars: carbon
Stars: evolution
Stars: individual: sakurai's object
Stars: individual: V4334 Sgr
Stars: mass-loss

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10.1111/j.1745-3933.2006.00246.x

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Evans, A., Tyne, V. H., van Loon, J. T., Smalley, B., Geballe, T. R., Gehrz, R. D., Woodward, C. E., Zijlstra, A. A., Polomski, E., Rushton, M. T., Eyres, S. P. S., Starrfield, S. G., Krautter, J., & Wagner, R. M. (2006). The Spitzer Infrared Spectrometer view of V4334 Sgr (Sakurai's Object). Monthly Notices of the Royal Astronomical Society: Letters, 373(1), L75-L79. https://doi.org/10.1111/j.1745-3933.2006.00246.x

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title = "The Spitzer Infrared Spectrometer view of V4334 Sgr (Sakurai's Object)",

abstract = "We present an observation of the very late thermal pulse object V4334 Sgr (Sakurai's Object) with the Infrared Spectrometer (IRS) on the Spitzer Space Telescope. The emission from 5-38 μm is dominated by the still-cooling dust shell. A number of features are seen in absorption against the dust shell, which we attribute to HCN and polyyne molecules. We use these features to determine the 12C/13C ratio for the absorbing gas to be ~3.2+3.2-1.6, this implies that, despite the H-content of the molecules, the hydrocarbon-bearing gas must have originated in material produced in the very late thermal pulse. We see no evidence of emission lines, despite the recently-reported optical and radio observations that suggest the effective temperature of the stellar remnant is rising. {\textcopyright} 2006 The Authors. Journal compilation {\textcopyright} 2006 RAS.",

keywords = "Circumstellar matter, Stars: carbon, Stars: evolution, Stars: individual: sakurai's object, Stars: individual: V4334 Sgr, Stars: mass-loss",

author = "A. Evans and Tyne, {V. H.} and {van Loon}, {J. T.} and B. Smalley and Geballe, {T. R.} and Gehrz, {R. D.} and Woodward, {C. E.} and Zijlstra, {A. A.} and E. Polomski and Rushton, {M. T.} and Eyres, {S. P S} and Starrfield, {S. G.} and J. Krautter and Wagner, {R. M.}",

year = "2006",

month = nov,

doi = "10.1111/j.1745-3933.2006.00246.x",

language = "English",

volume = "373",

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

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Evans, A, Tyne, VH, van Loon, JT, Smalley, B, Geballe, TR, Gehrz, RD, Woodward, CE, Zijlstra, AA, Polomski, E, Rushton, MT, Eyres, SPS, Starrfield, SG, Krautter, J & Wagner, RM 2006, 'The Spitzer Infrared Spectrometer view of V4334 Sgr (Sakurai's Object)', Monthly Notices of the Royal Astronomical Society: Letters, vol. 373, no. 1, pp. L75-L79. https://doi.org/10.1111/j.1745-3933.2006.00246.x

TY - JOUR

T1 - The Spitzer Infrared Spectrometer view of V4334 Sgr (Sakurai's Object)

AU - Evans, A.

AU - Tyne, V. H.

AU - van Loon, J. T.

AU - Smalley, B.

AU - Geballe, T. R.

AU - Gehrz, R. D.

AU - Woodward, C. E.

AU - Zijlstra, A. A.

AU - Polomski, E.

AU - Rushton, M. T.

AU - Eyres, S. P S

AU - Starrfield, S. G.

AU - Krautter, J.

AU - Wagner, R. M.

PY - 2006/11

Y1 - 2006/11

N2 - We present an observation of the very late thermal pulse object V4334 Sgr (Sakurai's Object) with the Infrared Spectrometer (IRS) on the Spitzer Space Telescope. The emission from 5-38 μm is dominated by the still-cooling dust shell. A number of features are seen in absorption against the dust shell, which we attribute to HCN and polyyne molecules. We use these features to determine the 12C/13C ratio for the absorbing gas to be ~3.2+3.2-1.6, this implies that, despite the H-content of the molecules, the hydrocarbon-bearing gas must have originated in material produced in the very late thermal pulse. We see no evidence of emission lines, despite the recently-reported optical and radio observations that suggest the effective temperature of the stellar remnant is rising. © 2006 The Authors. Journal compilation © 2006 RAS.

AB - We present an observation of the very late thermal pulse object V4334 Sgr (Sakurai's Object) with the Infrared Spectrometer (IRS) on the Spitzer Space Telescope. The emission from 5-38 μm is dominated by the still-cooling dust shell. A number of features are seen in absorption against the dust shell, which we attribute to HCN and polyyne molecules. We use these features to determine the 12C/13C ratio for the absorbing gas to be ~3.2+3.2-1.6, this implies that, despite the H-content of the molecules, the hydrocarbon-bearing gas must have originated in material produced in the very late thermal pulse. We see no evidence of emission lines, despite the recently-reported optical and radio observations that suggest the effective temperature of the stellar remnant is rising. © 2006 The Authors. Journal compilation © 2006 RAS.

KW - Circumstellar matter

KW - Stars: carbon

KW - Stars: evolution

KW - Stars: individual: sakurai's object

KW - Stars: individual: V4334 Sgr

KW - Stars: mass-loss

U2 - 10.1111/j.1745-3933.2006.00246.x

DO - 10.1111/j.1745-3933.2006.00246.x

M3 - Article

SN - 1745-3933

VL - 373

SP - L75-L79

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

IS - 1

ER -

The Spitzer Infrared Spectrometer view of V4334 Sgr (Sakurai's Object)

Abstract

Keywords

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