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arXiv · 1303.4292

A massive parsec-scale dust ring nebula around the yellow hypergiant Hen3-1379

D. Hutsemekers·N. L. J. Cox·C. Vamvatira-Nakou
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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 Hen3-1379 . The nebula appears as a detached ring of 1 pc diameter which contains 0.17 Msun of dust. We estimate the total gas mass to be 7 Msun, ejected some 16000 years ago. The ring nebula is very similar to nebulae found around luminous blue variables (LBVs) except it is not photoionized. We argued that Hen3-1379 is in a pre-LBV stage, providing direct evidence that massive LBV ring nebulae can be ejected during the red supergiant phase.

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D. Hutsemekers, N. L. J. Cox, C. Vamvatira-Nakou. 2013-03-18. A massive parsec-scale dust ring nebula around the yellow hypergiant Hen3-1379. https://doi.org/10.1051/0004-6361%2F201321380

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