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Detection of Strong Winds in Giant Extragalactic HII Regions

Published online by Cambridge University Press:  03 August 2017

H.O. Castañeda  and
J.M. Vilchez
H.O. Castañeda
Affiliation:
Instituto de Astrofísica de Canarias E-38200, La Laguna, Tenerife, Spain
J.M. Vilchez
Affiliation:
Instituto de Astrofísica de Canarias E-38200, La Laguna, Tenerife, Spain

Abstract

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The existence of supernova remnants and strong stellar winds in giant extragalactic HII regions should be associated with the existence of gas at very high velocities (≈ 102 − 103 km s–1). The detection of large velocity/low intensity gas within the regions could be possible with the use of CCD detectors with long slit intermediate spectroscopy and long integration times. To test this observational approach we have conducted a survey in the brightest giant HII regions of M 101 and M 51. We report on the preliminary results of our programme, and discuss the implications for the energetics of the regions.

Type
Session VI. Enrichment
Information
Symposium - International Astronomical Union , Volume 143: Wolf–Rayet Stars and Interrelations with other Massive Stars in Galaxies , 1991 , pp. 423
Copyright
Copyright © Kluwer 1991