Gaia-ESO Survey: massive stars in the Carina Nebula. A new census of OB stars

Abstract

The Gaia-ESO survey sample of massive OB stars in the Carina Nebula consists of 234 stars. The addition of brighter sources from the Galactic O-Star Spectroscopic Survey and additional sources from the literature allows us to create the most complete census of massive OB stars done so far in the region. It contains a total of 316 stars, being 18 of them in the background and four in the foreground. Of the 294 stellar systems in Car OB1, 74 are of O type, 214 are of non-supergiant B type and 6 are of WR or non-O supergiant (II to Ia) spectral class. We identify 20 spectroscopic binary systems with an O-star primary, of which 6 are reported for the first time, and another 18 with a B-star primary, of which 13 are new detections. The average observed double-lined binary fraction of O-type stars in the surveyed region is 0.35, which represents a lower limit. We find a good correlation between the spectroscopic n-qualifier and the projected rotational velocity of the stars. The fraction of candidate runaways among the stars with and without the n-qualifier is 4.4% and 2.4%, respectively, although non resolved double-lined binaries can be contaminating the fast rotators sample.

arXiv commentAccepted for publication in A&A, 62 pages, 8 figures

References in corpus (66)

• Binary interaction dominates the evolution of massive stars
• Gaia Early Data Release 3: Parallax bias versus magnitude, colour, and position
• Pre-Supernova Evolution of Massive Single and Binary Stars
• The R136 star cluster hosts several stars whose individual masses greatly exceed the accepted 150 Msun stellar mass limit
• The rotation rates of massive stars: the role of binary interaction through tides, mass transfer and mergers
• The Galactic O-Star Spectroscopic Survey (GOSSS). II. Bright Southern Stars
• The Galactic O-Star Spectroscopic Survey. I. Classification System and Bright Northern Stars in the Blue-Violet at R~2500
• The incidence of stellar mergers and mass gainers among massive stars
• The IACOB project: I. Rotational velocities in Northern Galactic O and early B-type stars revisited. The impact of other sources of line-broadening
• On the massive stellar population of the Super Star Cluster Westerlund 1
• The VLT-FLAMES Tarantula Survey I: Introduction and observational overview
• The Structure of the Homunculus: I. Shape and Latitude Dependence from H2 and [Fe II] Velocity Maps of Eta Carinae
• The VLT-FLAMES Tarantula Survey XII. Rotational velocities of the single O-type stars
• A Galactic O-Star Catalog
• The Gaia-ESO Public Spectroscopic Survey: Implementation, data products, open cluster survey, science, and legacy
• A Census of the Carina Nebula. I: Cumulative Energy Input from Massive Stars
• The Galactic O-Star Spectroscopic Survey (GOSSS). III. 142 additional O-type systems
• Fourier method in the determination of rotational velocities in OB stars
• A reanalysis of the Gaia Data Release 2 photometric sensitivity curves using HST/STIS spectrophotometry
• Eta Carinae: Binarity Confirmed
• The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products
• CHORIZOS: a CHi-square cOde for parameteRized modelIng and characteriZation of phOtometry and Spectrophotometry
• The periodicity of the eta Carinae events
• The VLT-FLAMES Tarantula Survey XVI. The optical+NIR extinction laws in 30 Doradus and the photometric determination of the effective temperatures of OB stars
• The spatial distribution of O-B5 stars in the solar neighborhood as measured by Hipparcos
• The population of OB supergiants in the starburst cluster Westerlund 1
• The chemical composition of the Orion star forming region: I. Homogeneity of O and Si abundances in B-type stars
• Carina OB Stars: X-ray Signatures of Wind Shocks and Magnetic Fields
• Identifying quiescent compact objects in massive Galactic single-lined spectroscopic binaries
• Validation of the accuracy and precision of Gaia EDR3 parallaxes with globular clusters
• MONOS: Multiplicity Of Northern O-type Spectroscopic systems. I. Project description and spectral classifications and visual multiplicity of previously known objects
• The Alma catalog of OB stars. II. A cross-match with Gaia DR2 and an updated map of the solar neighbourhood
• Optical-NIR dust extinction towards Galactic O stars
• The Tarantula Massive Binary Monitoring: III. Atmosphere analysis of double-lined spectroscopic systems
• Early-type stars in the young open cluster NGC 2244 and in the Mon OB2 association I. The multiplicity of O-type stars
• A Spectroscopic study of the non-thermal radio emitter Cyg OB2 #8A: Discovery of a new binary system
• The IACOB project. VII. The rotational properties of Galactic massive O-type stars revisited
• An estimation of the Gaia EDR3 parallax bias from stellar clusters and Magellanic Clouds data
• Resolved astrometric orbits of ten O-type binaries
• Early-type stars in the young open cluster IC1805. II. The probably single stars HD15570 and HD15629, and the massive binary/triple system HD15558
• Detection of a Hot Binary Companion of $\eta$ Carinae
• A spectroscopic investigation of the O-type star population in four Cygnus OB associations. I. Determination of the binary fraction
• The Villafranca catalog of Galactic OB groups. II. From Gaia DR2 to EDR3 and ten new systems with O stars
• The Gaia-ESO Survey: Target selection of open cluster stars
• The Villafranca catalog of Galactic OB groups: I. Systems with O2-O3.5 stars
• The deep OB star population in Carina from the VST Photometric H$\alpha$ Survey (VPHAS+)
• A close encounter of the massive kind
• New massive members of Cygnus OB2
• Spectroscopic characterization of the known O-star population in Cygnus OB2. Evidence of multiple star-forming bursts
• A Catalog of New Spectroscopically Confirmed Massive OB Stars in Carina
• Optical spectroscopy of X-Mega targets in the Carina nebula - VII On the multiplicity of Tr 16-112, HD 93343 and HD 93250
• Gaia-ESO Survey: global properties of clusters Trumpler 14 and 16 in the Carina Nebula
• Optical Spectroscopy of X-Mega targets in the Carina Nebula - VI. FO 15: a new O-Type double-lined eclipsing binary
• Westerlund 1 under the light of Gaia EDR3: Distance, isolation, extent, and a hidden population
• Lucky Spectroscopy, an equivalent technique to Lucky Imaging. Spatially resolved spectroscopy of massive close visual binaries using the William Herschel Telescope
• MONOS.II. Orbit review and analysis for 35 single-lined spectroscopic binary systems and candidates
• Spatially resolved spectroscopy of close massive visual binaries with HST/STIS: I. Seven O-type systems
• Lucky spectroscopy, an equivalent technique to Lucky Imaging: II. Spatially-resolved intermediate-resolution blue-violet spectroscopy of 19 close massive binaries using the William Herschel Telescope
• The Gaia-ESO Survey: The analysis of the hot-star spectra
• Calibration of the photometric G passband for Gaia Data Release 1
• Escape from the Bermuda cluster: orphanization by multiple stellar ejections
• The Gaia-ESO survey: A spectroscopic study of the young open cluster NGC 3293
• GRAVITY spectro-interferometric study of the massive multiple stellar system HD 93 206 A
• The high-energy emission from HD~93129A near periastron
• Detection of new O-type stars in the obscured stellar cluster Tr 16-SE in the Carina Nebula with KMOS
• The Stellar Initial Mass Function in the Galactic Center

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• Spatial distribution and clustering properties of the young stellar populations in the Carina Nebula complex and Car OB1
• Spectral classification of young stars using conditional invertible neural networks II. Application to Trumpler 14 in Carina
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