A Newly Discovered Open Cluster Surrounding the Wolf-Rayet Stars WR 38 and WR 38a

Details A Newly Discovered Open Cluster Surrounding the Wolf-Rayet Stars WR 38 and WR 38a A Newly Discovered Open Cluster Surrounding the Wolf-Rayet Stars WR 38 and WR 38a

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004pasp..116..170s&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 116, Issue 816, pp. 170-177.

Astronomy and Astrophysics

Astronomy

8

Stars: Wolf-Rayet, Stars: Evolution, Open Clusters And Associations: Individual (C1104-610A), Open Clusters And Associations: Individual (C1104-610B)

Scientific paper

Photoelectric and CCD UBV survey data are presented for stars brighter than about V~16.5 in the field of the faint Carina Wolf-Rayet (WR) stars WR 38 and WR 38a. Both WR stars appear to belong to an associated compact cluster (nuclear diameter ~0.3′) of at least six faint OB stars reddened by EB-V=1.60+/-0.02 s.e. and lying at a distance of ~14.5+/-1.6 kpc (V0-MV=15.80+/-0.25 s.d.). As cluster members, the two WR stars have estimated luminosities of Mv=-5.8 (WR 38, type WC4) and Mv=-5.0 (WR 38a, type WN5). The former value is slightly more luminous than expected for Galactic WR stars.

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