RV survey of the Carina Nebula's O stars : J/MNRAS/477/2068

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Authors : Kiminki M.M. orcid , Smith N. (hide) , Smith N. et..al

VizieR DOI : 10.26093/cds/vizier.74772068
Bibcode : 2018MNRAS.477.2068K (ADS) (Simbad) (Objects)
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CDS Keywords : Associations, stellar; Stars, O; Radial velocities
UAT : Stellar associations, O stars, Radial velocity

Observation (OC)

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Inserted into VizieR : 19-Jun-2018
Last modification : 18-Aug-2024

A radial velocity survey of the Carina Nebula's O-type stars. (2018)

Keywords : binaries spectroscopic - stars: early-type - stars: kinematics and dynamics - stars: massive - ISM: evolution - open clusters and associations: individual: Carina Nebula

Abstract:We have obtained multi-epoch observations of 31 O-type stars in the Carina Nebula using the CHIRON spectrograph on the CTIO/SMARTS 1.5-m telescope. We measure their radial velocities to 1-2 km/s precision and present new or updated orbital solutions for the binary systems HD 92607, HD 93576, HDE 303312, and HDE 305536. We also compile radial velocities from the literature for 32 additional O-type and evolved massive stars in the region. The combined data set shows a mean heliocentric radial velocity of 0.6km/s. We calculate a velocity dispersion of <=9.1km/s, consistent with an unbound, substructured OB association. The Tr 14 cluster shows a marginally significant 5km/s radial velocity offset from its neighbour Tr 16, but there are ...(more)
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Heliocentric radial velocities of 31 O-type stars in the Carina Nebula, measured from fiber-mode observations with the CHIRON spectrograph on the CTIO/SMARTS 1.5-m telescope. Dates are given for the midpoints of the exposures.
Megan M. Kiminki, mbagley(at)email.arizona.edu

                


                

                    

                


                

                    

                


                

                    
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