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The Antares emission nebula and mass loss of $\sf \alpha$ Scorpii A

2008; EDP Sciences; Volume: 491; Issue: 1 Linguagem: Inglês

10.1051/0004-6361

1432-0746

D. Reimers, H.-J. Hagen, Robert A. Baade, K. Braun,

Astrophysical Phenomena and Observations

The Antares nebula is a peculiar emission nebula seen in numerous Fe II lines and in radio free-free emission, probably associated with the H II region caused by alpha Sco B in the wind of alpha Sco A. High-resolution spectra with spatial resolution were used to study the emission line spectrum, the physical nature of the nebula and to determine the mass-loss rate of the M supergiant alpha Sco A.