THE GALACTIC O-STAR SPECTROSCOPIC SURVEY (GOSSS). II. BRIGHT SOUTHERN STARS
@article{Sota2013THEGO, title={THE GALACTIC O-STAR SPECTROSCOPIC SURVEY (GOSSS). II. BRIGHT SOUTHERN STARS}, author={A. Sota and Jes'us Ma'iz Apell'aniz and Nidia I. Morrell and Rodolfo H. Barb'a and Nolan R. Walborn and R. C. Gamen and Julia I. Arias and Emilio J. Alfaro}, journal={The Astrophysical Journal Supplement Series}, year={2013}, volume={211} }
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 ∼ 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 δ = −20°, for a total number of 258 O stars. We also revise the northern sample of Paper I to provide the full list of…
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References
SHOWING 1-10 OF 156 REFERENCES
EARLY RESULTS FROM THE GALACTIC O-STAR SPECTROSCOPIC SURVEY: C iii EMISSION LINES IN Of SPECTRA
- Physics
- 2010
On the basis of an extensive new spectroscopic survey of Galactic O stars, we introduce the Ofc category, which consists of normal spectra with C iii λλ4647–4650–4652 emission lines of comparable…
FURTHER RESULTS FROM THE GALACTIC O-STAR SPECTROSCOPIC SURVEY: RAPIDLY ROTATING LATE ON GIANTS
- Physics
- 2011
With new data from the Galactic O-Star Spectroscopic Survey, we confirm and expand the ONn category of late-O, nitrogen-enriched (N), rapidly rotating (n) giants. In particular, we have discovered…
RADIAL VELOCITIES OF GALACTIC O-TYPE STARS. II. SINGLE-LINED SPECTROSCOPIC BINARIES
- Physics, Geology
- 2012
We report on new radial velocity measurements of massive stars that are either suspected binaries or lacking prior observations. This is part of a survey to identify and characterize spectroscopic…
THE HIGH ANGULAR RESOLUTION MULTIPLICITY OF MASSIVE STARS
- Physics
- 2009
We present the results of a speckle interferometric survey of Galactic massive stars that complements and expands upon a similar survey made over a decade ago. The speckle observations were made with…
ICCD Speckle Observations of Binary Stars. XIX. An Astrometric/Spectroscopic Survey of O Stars
- Physics
- 1998
We present the results of a speckle interferometric survey made with the CHARA speckle camera and 4 m–class telescopes of Galactic O-type stars with V < 8. We can detect with the speckle camera…
The massive star binary fraction in young open clusters – I. NGC 6231 revisited
- Physics
- 2008
We present the results of a long-term high-resolution spectroscopy campaign on the O-type stars in NGC 6231. We revise the spectral classification and multiplicity of these objects and we constrain…
Binary and Multiple O-Type Stars in the Cassiopeia OB6 Association
- Physics, Geology
- 2005
We present the results of time-resolved spectroscopy of 13 O-type stars in the Cas OB6 stellar association. We conducted a survey for radial velocity variability in search of binary systems, which…
A New Spectral Classification System for the Earliest O Stars: Definition of Type O2
- Physics
- 2002
High-quality, blue-violet spectroscopic data are collected for 24 stars that have been classified as type O3 and that display the hallmark N IV and N V lines. A new member of the class is presented;…
Adaptive Optics Photometry and Astrometry of Binary Stars. II. A Multiplicity Survey of B Stars
- Physics
- 2005
We carried out a search for companions to B stars using the adaptive optics system of the Advanced Electro-Optical System 3.6 m telescope. We observed 70 B stars in the I band, finding 16 companions,…