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- Title
A massive parsec-scale dust ring nebula around the yellow hypergiant Hen 3-1379.
- Authors
Hutsemékers, D.; Cox, N. L. J.; Vamvatira-Nakou, C.
- Abstract
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⊙ of dust. We estimate the total gas mass to be 7 M⊙, ejected some 1.6 × 104 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.
- Subjects
HERSCHEL Space Observatory (Spacecraft); NEBULAE; O stars; LUMINOUS blue variables; HR diagrams; WOLF-Rayet stars
- Publication
Astronomy & Astrophysics / Astronomie et Astrophysique, 2013, Vol 552, Issue 2, pL6
- ISSN
0004-6361
- Publication type
Article
- DOI
10.1051/0004-6361/201321380