Journal
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
Volume 211, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0067-0049/211/1/10
Keywords
binaries: general; binaries: spectroscopic; stars: early-type; stars: emission-line; Be; surveys
Categories
Funding
- Spanish Government Ministerio de Ciencia e Innovacion [AYA2007-64052, AYA2007-64712, AYA 2010-17631, AYA 2010-15081]
- Spanish Government Ministerio de Ciencia e Innovacion through Ramon y Cajal Fellowship program
- Spanish Government Ministerio de Ciencia e Innovacion through FEDER funds
- Junta de Andalucia [P08-TIC-4075]
- NASA from the Space Telescope Science Institute [GO-10205, GO-10602, GO-10898, GO-11981]
- NASA [NAS 5-26555]
- Direccion de Investigacion de la Universidad de La Serena [DIULS PR09101]
- ESO-Government of Chile Joint Committee Postdoctoral Grant
- Chilean Government grants FONDECYT Regular [1120668]
- FONDECYT Iniciacion [11121550]
Ask authors/readers for more resources
We present the second installment of GOSSS, a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R similar to 2500 digital observations from both hemispheres selected from the Galactic O-Star Catalog (GOSC). In this paper we include bright stars and other objects drawn mostly from the first version of GOSC, all of them south of delta = -20 degrees, for a total number of 258 O stars. We also revise the northern sample of Paper I to provide the full list of spectroscopically classified Galactic O stars complete to B = 8, bringing the total number of published GOSSS stars to 448. Extensive sequences of exceptional objects are given, including the early Of/WN, O Iafpe, Ofc, ON/OC, Onfp, Of?p, and Oe types, as well as double/triple-lined spectroscopic binaries. The new spectral subtype O9.2 is also discussed. The magnitude and spatial distributions of the observed sample are analyzed. We also present new results from OWN, a multi-epoch high-resolution spectroscopic survey coordinated with GOSSS that is assembling the largest sample of Galactic spectroscopic massive binaries ever attained. The OWN data combined with additional information on spectroscopic and visual binaries from the literature indicate that only a very small fraction (if any) of the stars with masses above 15-20M(circle dot) are born as single systems. In the future we will publish the rest of the GOSSS survey, which is expected to include over 1000 Galactic O stars.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available