Discovery of C I around 51 Ophiuchi

A. Lecavelier Des Etangs; A. Vidal-Madjar; D. E. Backman; M. Deleuil; A. M. Lagrange; J. J. Lissauer; R. Ferlet; H. Beust; D. Mouillett

Discovery of C I around 51 Ophiuchi

A. Lecavelier Des Etangs
, A. Vidal-Madjar
, D. E. Backman
, M. Deleuil
, A. M. Lagrange
, J. J. Lissauer
, R. Ferlet
, H. Beust
, D. Mouillett

École Polytechnique

CNRS
Franklin and Marshall College, Lancaster
CERMO
Stony Brook University
NASA Ames Research Center

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

We present the discovery of cold C I in the 51 Oph environment, with a column density of N=5 × 10¹³cm^-2 and temperature T ≈ 20K. This is the first β Pic-like star other than β Pic with simultaneous detection of cold dust and gas. The C I/infrared continuum ratio and consequently the gas/dust ratio are similar to the β Pic ones. Since C I has a very short lifetime, it must be continuously replenished, probably by molecular gas dissociation. This provides evidence for the presence of evaporating bodies. A new upper limit on CO content is also given.

langue originale	Anglais
Pages (de - à)	L39-L42
journal	Astronomy and Astrophysics
Volume	321
Numéro de publication	3
état	Publié - 20 mai 1997

Contient cette citation

@article{141134a8e99c4201bc52b6e8c3cbe52b,

title = "Discovery of C I around 51 Ophiuchi",

abstract = "We present the discovery of cold C I in the 51 Oph environment, with a column density of N=5 × 1013cm-2 and temperature T ≈ 20K. This is the first β Pic-like star other than β Pic with simultaneous detection of cold dust and gas. The C I/infrared continuum ratio and consequently the gas/dust ratio are similar to the β Pic ones. Since C I has a very short lifetime, it must be continuously replenished, probably by molecular gas dissociation. This provides evidence for the presence of evaporating bodies. A new upper limit on CO content is also given.",

keywords = "Circumstellar matter, Line: profiles, Planetary systems, Stars: 51 Oph",

author = "\{Lecavelier Des Etangs\}, A. and A. Vidal-Madjar and Backman, \{D. E.\} and M. Deleuil and Lagrange, \{A. M.\} and Lissauer, \{J. J.\} and R. Ferlet and H. Beust and D. Mouillett",

year = "1997",

month = may,

day = "20",

language = "English",

volume = "321",

pages = "L39--L42",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "3",

}

TY - JOUR

T1 - Discovery of C I around 51 Ophiuchi

AU - Lecavelier Des Etangs, A.

AU - Vidal-Madjar, A.

AU - Backman, D. E.

AU - Deleuil, M.

AU - Lagrange, A. M.

AU - Lissauer, J. J.

AU - Ferlet, R.

AU - Beust, H.

AU - Mouillett, D.

PY - 1997/5/20

Y1 - 1997/5/20

N2 - We present the discovery of cold C I in the 51 Oph environment, with a column density of N=5 × 1013cm-2 and temperature T ≈ 20K. This is the first β Pic-like star other than β Pic with simultaneous detection of cold dust and gas. The C I/infrared continuum ratio and consequently the gas/dust ratio are similar to the β Pic ones. Since C I has a very short lifetime, it must be continuously replenished, probably by molecular gas dissociation. This provides evidence for the presence of evaporating bodies. A new upper limit on CO content is also given.

AB - We present the discovery of cold C I in the 51 Oph environment, with a column density of N=5 × 1013cm-2 and temperature T ≈ 20K. This is the first β Pic-like star other than β Pic with simultaneous detection of cold dust and gas. The C I/infrared continuum ratio and consequently the gas/dust ratio are similar to the β Pic ones. Since C I has a very short lifetime, it must be continuously replenished, probably by molecular gas dissociation. This provides evidence for the presence of evaporating bodies. A new upper limit on CO content is also given.

KW - Circumstellar matter

KW - Line: profiles

KW - Planetary systems

KW - Stars: 51 Oph

M3 - Article

AN - SCOPUS:0141445401

SN - 0004-6361

VL - 321

SP - L39-L42

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 3

ER -

Discovery of C I around 51 Ophiuchi

Résumé

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