The Galactic O-Star Spectroscopic Survey (GOSSS). III. 142 Additional O-type Systems

MAÍZ APELLÁNIZ, J.; SOTA, A.; ARIAS, J.; BARBÁ, R.; WALBORN, N. R.; SIMÓN-DÍAZ, S.; NEGUERUELA, I.; MARCO, A.; LEAO, J.R.S.; HERRERO, A.; GAMEN, R. C.; ALFARO, E. J.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES

IOP PUBLISHING LTD

Lugar: Londres; Año: 2016 vol. 224 p. 4 - 46

0067-0049

This is the third installment of the Galactic O-Star SpectroscopicSurvey (GOSSS), a massive spectroscopic survey of Galactic O stars,based on new homogeneous, high signal-to-noise ratio, R ? 2500digital observations selected from the Galactic O-Star Catalog. In thispaper, we present 142 additional stellar systems with O stars from bothhemispheres, bringing the total of O-type systems published within theproject to 590. Among the new objects, there are 20 new O stars. We alsoidentify 11 new double-lined spectroscopic binaries, 6 of which are ofO+O type and 5 of O+B type, and an additional new tripled-linedspectroscopic binary of O+O+B type. We also revise some of the previousGOSSS classifications, present some egregious examples of starserroneously classified as O-type in the past, introduce the use ofluminosity class IV at spectral types O4-O5.5, and adapt theclassification scheme to the work of Arias et al.