The Galactic O-Star Spectroscopic Survey (GOSSS) : III. 142 additional O-type systems

This is the third installment of the Galactic O-Star Spectroscopic Survey (GOSSS), a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R ∼ 2500 digital observations selected from the Galactic O-Star Catalog. In this paper, we present 142 addition...

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Detalles Bibliográficos
Autores principales: Maíz Apellániz, Jesús, Sota, Alfredo, Arias, Julia Inés, Barbá, Rodolfo Héctor, Walborn, Nolan Revere, Simón Díaz, S., Negueruela, I., Marco, A., Leão, J. R. S., Herrero, A., Gamen, Roberto Claudio, Alfaro, Emilio J.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Astronómicas
binaries: spectroscopic
binaries: visual
stars: early-type
stars: emission-line, Be
surveys
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86211
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:This is the third installment of the Galactic O-Star Spectroscopic Survey (GOSSS), a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R ∼ 2500 digital observations selected from the Galactic O-Star Catalog. In this paper, we present 142 additional stellar systems with O stars from both hemispheres, bringing the total of O-type systems published within the project to 590. Among the new objects, there are 20 new O stars. We also identify 11 new double-lined spectroscopic binaries, 6 of which are of O+O type and 5 of O+B type, and an additional new tripled-lined spectroscopic binary of O+O+B type. We also revise some of the previous GOSSS classifications, present some egregious examples of stars erroneously classified as O-type in the past, introduce the use of luminosity class IV at spectral types O4-O5.5, and adapt the classification scheme to the work of Arias et al.

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