Observations of Wolf-Rayet stars in the emission-line galaxy Tololo 3

Details Observations of Wolf-Rayet stars in the emission-line galaxy Tololo 3 Observations of Wolf-Rayet stars in the emission-line galaxy Tololo 3

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a...101l...5k&link_type=abstract

Astronomy and Astrophysics, vol. 101, no. 2, Aug. 1981, p. L5-L8.

Astronomy and Astrophysics

Astrophysics

88

Astronomical Spectroscopy, Emission Spectra, Wolf-Rayet Stars, H Ii Regions, Line Spectra, O Stars, Stellar Evolution, Stellar Luminosity

Scientific paper

A strong broad He II 4686 emission-line in the spectrum of the dwarf galaxy Tol 3 has been found. This emission originates from Wolf-Rayet stars mostly of WN type. The data are consistent with the following interpretations. Low luminosity WR stars (MB = -5) contribute to the emission and an equal number of early-type stars and WR stars is observed in the central region of this galaxy. It is argued that a burst of star formation ended (4-6) x 10 to the 6th years ago on a short time scale (about 100,000 years) so that most of the O stars have evolved to WR phases. Alternatively Tol 3 may contain a very few number of very luminous WR stars (MB = -9) which would only occur in supergiant H II regions.

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