EDP Sciences
Free access
Issue
A&A
Volume 388, Number 2, June III 2002
Page(s) 458 - 460
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20020556


A&A 388, 458-460 (2002)
DOI: 10.1051/0004-6361:20020556

Suspected Wolf-Rayet Galaxies UM 456 and UM 594

A. Niedzielski and K. Rochowicz

Torun Center for Astronomy (TCfA), N. Copernicus University, ul. Gagarina 11, 87-100 Torun, Poland

(Received 16 January 2002 / Accepted 8 april 2002)

Abstract
First results of an on-going search for Wolf-Rayet galaxies, based on new observations obtained with the Hobby Eberly Telescope (HET) and the Marcario Low Resolution Spectrograph (LORES), are presented. UM 456 and UM 594 have been found to be normal HII galaxies. New determinations of radial velocities have been given: UM 456 - $V_{\rm r}=1702\,\pm\,48$ km s -1 UM 594 - $V_{\rm r}=6540\,\pm\,45$ km s -1. Independent estimates of distances, WR/(WR+O) ratios and oxygen to helium abundances ratios have been obtained.


Key words: galaxies: starburst -- galaxies: stellar content -- galaxies: individual: UM 456, UM 594 -- stars: Wolf-Rayet -- stars: early-type

Offprint request: A. Niedzielski, aniedzi@astri.uni.torun.pl

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