Astrophys. J., 891, 107-107 (2020/March-2)
Massive stars in the SDSS-IV-APOGEE survey: Wolf-Rayet stars of the WN type.
ROMAN-LOPES A., ROMAN-ZUNIGA C.G., BORISSOVA J., RAMIREZ-PRECIADO V., HERNANDEZ J. and MINNITI D.
Abstract (from CDS):
In this paper, we describe the results obtained in our study of Galactic Wolf-Rayet stars of the WN type, using the APOGEE2 spectrographs. The APOGEE2 WN star near-infrared spectra presented here were selected through a careful examination of the APOGEE2 DR16 sample, being compound of at least one exemplar of each Wolf-Rayet star from WN4 to WN11 types. Besides the APOGEE2 WN sample, we also identified three new Galactic exemplars of the WN type. The first is WR 147-1, a narrow-lined Wolf-Rayet star of the WN4-5 type located in the direction of the Cygnus-X North complex. The two remaining objects, WR 48-11 and WR 48-12, are found at projected angular distances of several arcminutes southwest from the Danks 1 cluster. WR 48-12 has an estimated heliocentric distance of 7.0–3.0+5.0 kpc, which is not compatible (within the quoted uncertainties) with that of about 3.8 ± 0.6 kpc for the G305 complex. On the other hand, WR 48-11 has a probable heliocentric distance of 19.0–4.7+6.5 kpc, which is about three times that of the former, implying that it is probably placed well behind the G305 complex, perhaps at the outermost portion of the Perseus arm.
© 2020. The American Astronomical Society. All rights reserved.
Stellar types - O stars
View the reference in ADS
To bookmark this query, right click on this link: simbad:2020ApJ...891..107R and select 'bookmark this link' or equivalent in the popup menu