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

Centre national de la recherche scientifique
Physics and Astronomy Dept
Franklin and Marshall College, Lancaster
Groupe d'Astrophysique de Grenoble
CERMO
Astronomy Program
Stony Brook University
National Aeronautics and Space Administration (NASA)
NASA Ames Research Center

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

9 Citations (Scopus)

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.

Original language	English
Pages (from-to)	L39-L42
Journal	Astronomy and Astrophysics
Volume	321
Issue number	3
Publication status	Published - 20 May 1997

Keywords

Circumstellar matter
Line: profiles
Planetary systems
Stars: 51 Oph

Cite this

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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 {\texttimes} 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",

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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

Abstract

Keywords

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