Article (Scientific journals)
A massive parsec-scale dust ring nebula around the yellow hypergiant Hen 3-1379
Hutsemekers, Damien; Cox, N. L. J.; Vamvatira-Nakou, Chloi
2013In Astronomy and Astrophysics, 552, p. 6, pp. 1-4
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Keywords :
stars: massive; circumstellar matter; stars: mass-loss; stars: individual: Hen 3-1379
Abstract :
[en] On the basis of far-infrared images obtained by the Herschel Space Observatory, we report the discovery of a large and massive dust shell around the yellow hypergiant Hen 3-1379. The nebula appears as a detached ring of 1 pc diameter which contains 0.17 M[SUB]&sun;[/SUB] of dust. We estimate the total gas mass to be 7 M[SUB]&sun;[/SUB], ejected some 1.6 × 10[SUP]4[/SUP] years ago. The ring nebula is very similar to nebulae found around luminous blue variables (LBVs) except it is not photoionized. We argued that Hen 3-1379 is in a pre-LBV stage, providing direct evidence that massive LBV ring nebulae can be ejected during the red supergiant phase.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Hutsemekers, Damien ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Cox, N. L. J.;  Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, 3001, Leuven, Belgium
Vamvatira-Nakou, Chloi ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Language :
English
Title :
A massive parsec-scale dust ring nebula around the yellow hypergiant Hen 3-1379
Publication date :
01 April 2013
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Volume :
552
Pages :
L6, pp. 1-4
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 08 April 2013

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