Published in Astronomy and Astrophysics Supplement, v.136, p.35-52, 1999.
astro-ph/9812347

For a PDF version of the article, click here.


NEW CATALOGUE OF WOLF-RAYET GALAXIES AND HIGH-EXCITATION EXTRA-GALACTIC HII REGIONS

Daniel Schaerer 1, Thierry Contini 2,3, and Maximillien Pindao 4


1 Observatoire Midi-Pyrénées, Laboratoire d'Astrophysique, 14 Av. E. Belin, F-31400 Toulouse, France
2 School of Physics & Astronomy, Tel Aviv University, 69978 Tel Aviv, Israel
3 European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching bei München, Germany
4 Observatoire de Genève, 51 Ch. des Maillettes, CH-1290 Sauverny, Switzerland


Abstract. We present a new compilation of Wolf-Rayet (WR) galaxies and extra-galactic HII regions showing broad HeII lambda4686 HeII lambda4686 emission drawn from the literature. Relevant information on the presence of other broad emission lines (NIII lambda4640, CIV lambda5808 and others) from WR stars of WN and WC subtypes, and other existing broad nebular lines is provided.

In total we include 139 known WR galaxies. Among these, 57 objects show both broad HeII lambda4686 HeII lambda4686 and CIV lambda5808 features. In addition to the broad (stellar) HeII lambda4686 HeII lambda4686 emission, a nebular HeII component is well established (suspected) in 44 (54) objects. We find 19 extra-galatic HII regions without WR detections showing nebular HeII lambda4686 HeII lambda4686 emission.

The present sample can be used for a variety of studies on massive stars, interactions of massive stars with the ISM, stellar populations, starburst galaxies etc. The data is accessible electronically and will be updated periodicaly.


Key words: galaxies: starburst -- galaxies: stellar content -- galaxies: ISM -- stars: Wolf-Rayet


Table of Contents

INTRODUCTION

SEARCHES FOR WR GALAXIES
Spectroscopic searches
Narrow-band imaging and others

NEW CATALOGUE OF WR GALAXIES
Selection criteria and procedure

REMARKS ON INDIVIDUAL WR GALAXIES

HII GALAXIES SHOWING ONLY NEBULAR HeII EMISSION

SUSPECTED WR GALAXIES AND GALAXIES WITHOUT HeII lambda4686 HeII 4686
Suspected WR galaxies
Emission line galaxies without HeII

DISCUSSION AND CONCLUSION

REFERENCES

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