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NGC 604 — A Giant H II Region Dominated by Many WR Stars

Published online by Cambridge University Press:  14 August 2015

M. Rosa  and
S. D'Odorico
M. Rosa
Affiliation:
1Landessternwarte Koenigstuhl, D 69 Heidelberg, FRG
S. D'Odorico
Affiliation:
2European Southern Observatory, D 8046 Garching, FRG

Extract

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NGC 604, the largest H II region in M 33, is comparable in many respects (eg. ionized mass, total extent of a few hundered pc) with the giant H II complex 30 Doradus of the LMC. Recently D'Odorico and Rosa (1981) discovered broad WR emission features at 4640 å, 4660 å, He II 4686 å and 5812 å in a number of the bright knots in the core of NGC 604. In that paper it was concluded, that about 50 WR stars, mainly of the transition type WN 7 but WC characteristica seen as well, are present in the H II region. These findings were confirmed by the observations by Conti and Massey (1981).

Type
SESSION 7 — WOLF-RAYET STARS IN EXTERNAL GALAXIES
Information
Symposium - International Astronomical Union , Volume 99: Wolf-Rayet Stars: Observations, Physics, Evolution , 1982 , pp. 555 - 556
Copyright
Copyright © Reidel 1982 

References

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