THE DETECTION OF INFRARED SiS BANDS IN SPECTRA OF S STARS
THE DETECTION OF INFRARED SiS BANDS IN SPECTRA OF S STARS
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S星光谱中红外SiS波段的检测
DOI:
10.1088/0004-637x/690/2/l122
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发表时间:
2009
期刊:
影响因子:
--
通讯作者:
Cami J
中科院分区:
文献类型:
--
作者:
Cami J
We present Spitzer spectra of S stars, which are cool evolved stars with a C/O ratio near unity, some of which have enhanced s-process abundances. We present the detection of a strong and unusual band in the mid-infrared, at 13 μm, within the N-band window. Using quantum-chemically calculated line lists, and model spectra, we identify this band as the fundamental rovibrational band of SiS. Detection of the overtone band at 6.7 μm confirms the identification. Fitting the line profile shows that the molecule is located in relatively cool layers, at T∼ 1500 K. We discuss these results in the context of chemical equilibrium models. The observed strength of these bands in the cool S stars makes them a promising observational diagnostic tool for studying the atmospheres of brown dwarfs and exoplanets.
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DOI:
10.1086/504516
发表时间:
2006-03
期刊:
The Astrophysical Journal
影响因子:
--
作者:
G. Sloan;K. Kraemer;M. Matsuura;M. Matsuura;P. R. Wood;Stephan D. Price;M. Egan
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G. Sloan;K. Kraemer;M. Matsuura;M. Matsuura;P. R. Wood;Stephan D. Price;M. Egan
DOI:
10.1046/j.1365-8711.2001.04823.x
发表时间:
2001
影响因子:
4.8
作者:
T. Millar;J. R. Flores;A. Markwick
通讯作者:
A. Markwick
DOI:
10.1086/145334
发表时间:
1950
期刊:
The Astrophysical Journal
影响因子:
--
作者:
W. Bidelman
通讯作者:
W. Bidelman
DOI:
10.1086/157527
发表时间:
1979
期刊:
The Astrophysical Journal
影响因子:
--
作者:
T. Ake
通讯作者:
T. Ake
影响因子:
6.5
作者:
M. Matsuura;A. Zijlstra;J. V. Loon;I. Yamamura;A. Markwick;P. Whitelock;P. Woods;J. Marshall;M. Feast;L. Waters;L. Waters
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L. Waters