SIMBAD references

1995A&A...302..830S - Astronomy and Astrophysics, volume 302, 830-838 (1995/10-3)

A detailed study of a very late WN star in M 33.


Abstract (from CDS):

We present the first quantitative analysis of a M 33 Wolf-Rayet star, the Ofpe/WN9 candidate MCA1-B (Willis et al. 1992). From new higher resolution observations analysed with the Wolf-Rayet standard model, we reclassify MCA1-B as WN9 and find its stellar parameters (T*=29kK, Teff=19kK, log L/L=5.8, log {dot}(M)/M/yr=-4.0, v=420km/s) to be very similar to the LMC WN9 stars (Crowther et al. 1995a), and R84 in particular. Chemical abundances (H/He=2.6, N/He=0.003, C/N<0.1) are also comparable to R84 indicating a similar evolutionary status (probable dormant LBV) and metallicity (Z∼0.008) consistent with its location in the outer regions of M 33.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: fundamental parameters - stars: Wolf-Rayet - stars: individual: MCA1-B (M 33) (MCA 1B) - stars: individual: R 84 (LMC) (RMC 84) - galaxies: individual: M 33

Simbad objects: 27

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