Astronomy and Astrophysics – Astronomy
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.8801b&link_type=abstract
American Astronomical Society Meeting 210, #88.01; Bulletin of the American Astronomical Society, Vol. 39, p.200
Astronomy and Astrophysics
Astronomy
Scientific paper
We present new optical spectroscopic and archival infrared photometric observations of the SMC B-type star NGC 346:KWBBe200. Originally classified as a classical Be star by the optical photometric survey of Keller et al. (2000), our followup observations reveal a wealth of emission lines in NGC 346:KWBBe200's optical spectrum (3900-6650 Ang), including a number of forbidden emission lines. These spectra closely resemble that of S137, a well known edge-on, dusty post-main-sequence B[e] star in the LMC. 2MASS and Spitzer IRAC photometry of NGC 346:KWBBe200 indicate the presence of warm dust associated with system. On the basis of these data, we suggest that NGC 346:KWBBe 200 is characterized by a dusty circumstellar envelope, and is likely to be the fifth known post-main-sequence B[e] in the SMC, and hence a potential precursor to a future LBV.
KSB acknowledges support from NASA grant NAG5-8054 and a Research Corporation Cottrell Scholars award. JPW acknowledges support via NPP Fellowship NNH06CC03B at NASA GSFC, travel support from NOAO, and support from NASA GSRP grant NGT-50469.
Bjorkman Jon E.
Bjorkman Karen S.
Clampin Marc
Wisniewski John P.
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