Searching for Hidden Wolf-Rayet Stars in the Galaxy 15 New Wolf-Rayet Stars

Details Searching for Hidden Wolf-Rayet Stars in the Galaxy 15 New Wolf-Rayet Stars Searching for Hidden Wolf-Rayet Stars in the Galaxy 15 New Wolf-Rayet Stars

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20915802h&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #158.02; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

Hot, massive stars play a vital role in the working of the `cosmic cauldron', living life in the fast lane and ending their evolution via some of the most powerful events in the universe. Wolf-Rayet (WR) stars are the evolved descendants of the most massive stars. Believed to represent the bare He-core of their massive star precursor, their spectra are dominated by impressive emission features. This and the short duration of this evolutionary phase make WR stars excellent tracers of recent star formation in the nearby Universe as well as vital tests for stellar evolutionary models. Our Galaxy provides an excellent laboratory for studying massive stars as we can resolve objects on small scales and so hope to achieve sample completeness. To date 300 WR stars have been observed in our Galaxy but with studies predicting that the Milk Way should host 1000-2500 WR stars, it would appear that a large number of stars are still waiting to be discovered. Here we report the discovery of 15 (11 WN and 4 WC) WR stars found as part of near-mid infrared broad-band study of the Galactic WR population.

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