TY - JOUR
T1 - The G305 Star-forming Region. I. Newly Classified Hot Stars
AU - Borissova, Jura
AU - Roman-Lopes, Alexandre
AU - Covey, Kevin
AU - Medina, Nicolas
AU - Kurtev, Radostin
AU - Roman-Zuniga, Carlos
AU - Kuhn, M. A.
AU - Contreras Pena, Carlos
AU - Lucas, Philip
AU - Ramirez Alegria, Sebastian
AU - Minniti, Dante
AU - Kounkel, Marina
AU - Stringfellow, Guy
AU - Barbá, Rodolfo H.
AU - Suárez, Genaro
N1 - Publisher Copyright:
© 2019. The American Astronomical Society. All rights reserved..
PY - 2019/1/1
Y1 - 2019/1/1
N2 - The relatively nearby star-forming complex G305 is one of the most luminous H ii regions in the Galaxy, and it contains several sites and epochs of star formation. Using a combination of near-infrared photometry from "Vista Variables in Via Lactea" ESO Large Public Survey, SDSS-IV APOGEE-2 spectra, and Gaia DR2 photometry and astrometry, we report on 29 OB type, Wolf-Rayet, and emission-line stars, 18 of which are newly classified. Most of these hot stars belongs to the main sequence, although some stars of class I are also proposed. The mean radial velocity is RV = -41.8 . The average spectroscopic distance is 3.2 +1.6 kpc, while the Gaia DR2 average distance is 3.7 +1.8 kpc. Eight objects show light-curve variations with amplitudes greater than 0.5 mag in the K S band.
AB - The relatively nearby star-forming complex G305 is one of the most luminous H ii regions in the Galaxy, and it contains several sites and epochs of star formation. Using a combination of near-infrared photometry from "Vista Variables in Via Lactea" ESO Large Public Survey, SDSS-IV APOGEE-2 spectra, and Gaia DR2 photometry and astrometry, we report on 29 OB type, Wolf-Rayet, and emission-line stars, 18 of which are newly classified. Most of these hot stars belongs to the main sequence, although some stars of class I are also proposed. The mean radial velocity is RV = -41.8 . The average spectroscopic distance is 3.2 +1.6 kpc, while the Gaia DR2 average distance is 3.7 +1.8 kpc. Eight objects show light-curve variations with amplitudes greater than 0.5 mag in the K S band.
KW - Galaxy: stellar content
KW - infrared: stars
KW - stars: massive
KW - stars: variables: general
KW - stars: Wolf Rayet
UR - http://www.scopus.com/inward/record.url?scp=85072374665&partnerID=8YFLogxK
U2 - 10.3847/1538-3881/ab276b
DO - 10.3847/1538-3881/ab276b
M3 - Article
AN - SCOPUS:85072374665
SN - 0004-6256
VL - 158
JO - Astronomical Journal
JF - Astronomical Journal
IS - 1
M1 - 46
ER -