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| Paper: |
Discovery of a New Wolf-Rayet Star Using SAGE-LMC |
| Volume: |
465, Four Decades of Massive Star Research - A Scientific Meeting in Honor of Anthony J. Moffat |
| Page: |
511 |
| Authors: |
Gvaramadze, V. V.; Chené, A.-N.; Kniazev, A. Y.; Schnurr, O. |
| Abstract: |
We report the first-ever discovery of an extragalactic Wolf-Rayet
(WR) star with Spitzer. A new WR star in the Large
Magellanic Cloud (LMC) was revealed via detection of its
circumstellar shell using 24 μm images obtained in the
framework of the Spitzer Survey of the Large Magellanic
Cloud (SAGE-LMC). Subsequent spectroscopic observations with the
Gemini South resolved the central star in two components, one of
which is a WN3b+abs star, while the second one is a B0 V star. We
consider the lopsided brightness distribution over the
circumstellar shell as an indication that the WR star is a runaway
and use this interpretation to identify a possible parent cluster
of the star. |
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