Bibcode
Whelan, D. G.; Shetrone, M. D.; Schiavon, R. P.; Nidever, D. L.; Meszaros, Sz.; Majewski, S. R.; Hearty, F. R.; Cunha, K. M.; Burton, A.; Chojnowski, D.; Wisniewski, John P.
Bibliographical reference
American Astronomical Society, AAS Meeting #221, #144.09
Advertised on:
1
2013
Citations
0
Refereed citations
0
Description
A small fraction of the telluric standards observed as part of the
SDSS-III APOGEE survey have been discovered to be B-type emission line
stars, many of which are likely to be classical Be stars. The H I
Brackett line profiles of these systems are being characterized to study
the properties of the circumstellar disks associated with these objects
(see e.g. Chojnowski et al 2012). We present the analysis of a
particularly unusual one of these blue emission line stars, which
exhibits double-peaked H I Brackett lines that extend to abnormally
large velocities (FWHM ~1380 km/s) for typical classical Be stars.
Analysis of follow-up 0.35 - 2.46 micron spectroscopy and the system's
spectral energy distribution also reveals puzzling deviations from the
behavior of typical classical Be stars. We discuss the range of possible
evolutionary scenarios for this emission-line star.