Methane line opacities in very cool stellar objects

P. H. Hauschildt; R. Warmbier; R. Schneider; T. Barman

doi:10.1051/0004-6361/200912366

Methane line opacities in very cool stellar objects

P. H. Hauschildt, R. Warmbier, R. Schneider, T. Barman

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

6 Citations (Scopus)

Abstract

Aims. We investigate the effects of different line data for methane ¹²CH₁₄ on the structures of model atmospheres and low resolution synthetic spectra for ultra-cool substellar objects. Methods. For each set of methane line data we compare the resulting model atmospheres and spectra computed with the general purpose model atmosphere code PHOENIX. Results. The new HGW methane line data compares well to the HITRAN2004 data. We find the the HITRAN2004 methane lines are in some bands stronger than the HGW lines, resulting in deeper absorption bands in the synthetic spectra. Conclusions. .

Original language	English
Pages (from-to)	225-229
Number of pages	5
Journal	Astronomy and Astrophysics
Volume	504
Issue number	1
DOIs	https://doi.org/10.1051/0004-6361/200912366
Publication status	Published - Sept 2009
Externally published	Yes

Keywords

Molecular data
Stars: Atmospheres
Stars: Low-mass, brown dwarfs

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1051/0004-6361/200912366

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title = "Methane line opacities in very cool stellar objects",

abstract = "Aims. We investigate the effects of different line data for methane 12CH14 on the structures of model atmospheres and low resolution synthetic spectra for ultra-cool substellar objects. Methods. For each set of methane line data we compare the resulting model atmospheres and spectra computed with the general purpose model atmosphere code PHOENIX. Results. The new HGW methane line data compares well to the HITRAN2004 data. We find the the HITRAN2004 methane lines are in some bands stronger than the HGW lines, resulting in deeper absorption bands in the synthetic spectra. Conclusions. .",

keywords = "Molecular data, Stars: Atmospheres, Stars: Low-mass, brown dwarfs",

author = "Hauschildt, {P. H.} and R. Warmbier and R. Schneider and T. Barman",

year = "2009",

month = sep,

doi = "10.1051/0004-6361/200912366",

language = "English",

volume = "504",

pages = "225--229",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

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number = "1",

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TY - JOUR

T1 - Methane line opacities in very cool stellar objects

AU - Hauschildt, P. H.

AU - Warmbier, R.

AU - Schneider, R.

AU - Barman, T.

PY - 2009/9

Y1 - 2009/9

N2 - Aims. We investigate the effects of different line data for methane 12CH14 on the structures of model atmospheres and low resolution synthetic spectra for ultra-cool substellar objects. Methods. For each set of methane line data we compare the resulting model atmospheres and spectra computed with the general purpose model atmosphere code PHOENIX. Results. The new HGW methane line data compares well to the HITRAN2004 data. We find the the HITRAN2004 methane lines are in some bands stronger than the HGW lines, resulting in deeper absorption bands in the synthetic spectra. Conclusions. .

AB - Aims. We investigate the effects of different line data for methane 12CH14 on the structures of model atmospheres and low resolution synthetic spectra for ultra-cool substellar objects. Methods. For each set of methane line data we compare the resulting model atmospheres and spectra computed with the general purpose model atmosphere code PHOENIX. Results. The new HGW methane line data compares well to the HITRAN2004 data. We find the the HITRAN2004 methane lines are in some bands stronger than the HGW lines, resulting in deeper absorption bands in the synthetic spectra. Conclusions. .

KW - Molecular data

KW - Stars: Atmospheres

KW - Stars: Low-mass, brown dwarfs

UR - http://www.scopus.com/inward/record.url?scp=70249129453&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/200912366

DO - 10.1051/0004-6361/200912366

M3 - Article

AN - SCOPUS:70249129453

SN - 0004-6361

VL - 504

SP - 225

EP - 229

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 1

ER -

Methane line opacities in very cool stellar objects

Abstract

Keywords

ASJC Scopus subject areas

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