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arXiv · 1802.01724

Massive stars in the SDSS-IV/APOGEE SURVEY. I- OB stars

A. Roman-Lopes·C. RomÁn-ZÚÑiga·Mauricio Tapia·Drew Chojnowski·Y. GÓmez Maqueo Chew·D. A. GarcÍa-HernÁndez·Jura Borissova·Dante Minniti·Kevin R. Covey·PenÉlope Longa-PeÑa·J. G. Fernandez-Trincado·Olga Zamora·Christian Nitschelm
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Abstract

In this work we make use of DR14 APOGEE spectroscopic data to study a sample of 92 known OB stars. We developed a near-infrared semi-empirical spectral classification method that was successfully used in case of four new exemplars, previously classified as later B-type stars. Our results agree well with those determined independently from ECHELLE optical spectra, being in line with the spectral types derived from the "canonical" MK blue optical system. This confirms that the APOGEE spectrograph can also be used as a powerful tool in surveys aiming to unveil and study large number of moderately and highly obscured OB stars still hidden in the Galaxy.

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A. Roman-Lopes, C. RomÁn-ZÚÑiga, Mauricio Tapia, Drew Chojnowski, Y. GÓmez Maqueo Chew, D. A. GarcÍa-HernÁndez, Jura Borissova, Dante Minniti, Kevin R. Covey, PenÉlope Longa-PeÑa, J. G. Fernandez-Trincado, Olga Zamora, Christian Nitschelm. 2018-02-05. Massive stars in the SDSS-IV/APOGEE SURVEY. I- OB stars. https://doi.org/10.3847/1538-4357/aaac27

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