The APOGEE view of Be stars

Bibcode
2014AAS...22340307E
Zasowski, G.; Wilson, J. C.; Nidever, D. L.; Schneider, D. P.; Skrutskie, M. F.; Holtzman, J. A.; Li, Z.; Meszaros, S.; Garner, A.; Hearty, F.; Davenport, J. R.; Ebelke, G.; Feuillet, D.; Borish, H.; Whelan, D. G.; Bizyaev, D.; Wisniewski, J. P.; Majewski, S. R.; Shetrone, M. D.; Chojnowski, S.; Eikenberry, Stephen S.
Bibliographical reference

American Astronomical Society, AAS Meeting #223, #403.07

Advertised on:
1
2014
Number of authors
21
IAC number of authors
1
Citations
0
Refereed citations
0
Description
I will present an overview of the 100+ previously unidentified Be stars discovered during the APOGEE survey. I will particularly focus on the new highly-magnetized Rigidly Rotating Magnetosphere (RRM) stars of the Sigma Orionis E type we have found. Both of the discovered stars show the spectroscopic signatures of the rigidly rotating magnetospheres common to this class of highly-magnetized (B ˜10 kiloGauss) stars. One (ABES-050) is an early main-sequence B star with unusually strong He absorption (similar to Sig Ori E), while the other (ABES-075) appears to be “He-normal” with a B3 IV subtype - the first known magnetized RRM star that is He-normal and possibly off the main sequence. We combine the APOGEE discovery spectra with other optical and near-infrared spectra of these two stars, as well as of Sig Ori E itself, to show how near-infrared spectroscopy can be a powerful tool for discovering more of these rare objects. We discuss the potential for further discovery of Sig Ori E type stars, as well as the implications of our discoveries for the population of these objects and insights into their origin and evolution.
Type
Non-refereed

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