Another single hydrogen-rich Wolf-Rayet star in the SMC?

Abstract

A 12th Wolf-Rayet star in the SMC has recently been discovered by Massey et al. (2003). In order to determine its spectral type and a preliminary binary status, we obtained 3 high signal-to-noise spectra separated in time at the ESO-NTT. Compared to other WR stars in the SMC, SMC-WR12 appears to belong to the subgroup of faint, single and hydrogen-rich WN stars. We discuss the evolutionary status of WR12 and show that relatively low mass rotating progenitors can better account for the properties of single hydrogen-rich WN stars in the SMC.

5 pages, 2 figures, accepted by A&A, include latest corrections

References in corpus (3)

• Stellar evolution with rotation VII: Low metallicity models and the blue to red supergiant ratio in the SMC
• A Search for Wolf-Rayet Stars in the Small Magellanic Cloud
• The Discovery of a Twelfth Wolf-Rayet Star in the Small Magellanic Cloud

Cited by in corpus (14)

• Wolf-Rayet stars in the Small Magellanic Cloud: I. Analysis of the single WN stars
• A Spectroscopic Survey of WNL Stars in the LMC: General Properties and Binary Status
• On the role of the WNH phase in the evolution of very massive stars: Enabling the LBV instability with feedback
• Wolf-Rayet stars in the Small Magellanic Cloud as testbed for massive star evolution
• Rapidly accreting white dwarfs as supernova type Ia progenitors
• An absence of binary companions to Wolf-Rayet stars in the Small Magellanic Cloud: implications for mass loss and black hole masses at low metallicity
• Exploring the borderline between stable mass transfer and mergers in close binary evolution
• Populations of evolved massive binary stars in the Small Magellanic Cloud I: Predictions from detailed evolution models
• A Study of Wolf-Rayet stars Formed via Chemically Homogeneous Evolution
• The massive eclipsing LMC Wolf-Rayet binary BAT99-129. 1 Orbital parameters, hydrogen content and spectroscopic characteristics
• Metal-poor single Wolf-Rayet stars: The interplay of optically thick winds and rotation
• The Stripped-Star Ultraviolet Magellanic Cloud Survey (SUMS): The UV Photometric Catalog and Stripped Star Candidate Selection
• SDSS-V LVM: Detectability of Wolf-Rayet stars and their He II ionizing flux in low-metallicity environments I. The weak-lined, early-type WN3 stars in the SMC
• Wind ionization structure of the short-period eclipsing LMC Wolf-Rayet binary BAT99-129: preliminary results