Multidimensional Bayesian membership analysis of the Sco OB2 moving group
@article{Rizzuto2011MultidimensionalBM, title={Multidimensional Bayesian membership analysis of the Sco OB2 moving group}, author={Aaron C. Rizzuto and Michael J. Ireland and J. Gordon Robertson}, journal={Monthly Notices of the Royal Astronomical Society}, year={2011}, volume={416}, pages={3108-3117} }
We present a new high-mass membership of the nearby Sco OB2 association based on Hipparcos positions, proper motions and parallaxes, and radial velocities taken from the 2nd Catalogue of Radial Velocities with Astrometric Data (CRVAD-2). The Bayesian membership selection method developed makes no distinction between subgroups of Sco OB2 and utilizes linear models in calculation of membership probabilities. We select 436 members, 88 of which are new members not included in previous membership…
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References
SHOWING 1-10 OF 23 REFERENCES
Identification of moving groups and member selection using Hipparcos data
- Physics
- 1999
A new method to identify coherent structures in velocity space – moving groups – in astrometric catalogues is presented: the Spaghetti method. It relies on positions, parallaxes and proper motions,…
Kinematics and history of the solar neighbourhood revisited
- Physics
- 2009
We use proper motions and parallaxes from the new reduction of Hipparcos data and Geneva-Copenhagen radial velocities for a complete sample of ∼15 000 main-sequence and subgiant stars, and new Padova…
A refurbished convergent-point method for finding moving groups in the Hipparcos Catalogue★
- Physics
- 1999
The Hipparcos data allow a major step forward in the research of ‘moving groups’ in the Solar neighbourhood, as the common motion of group members causes converging proper motions. Previous knowledge…
Exploring the Full Stellar Population of the Upper Scorpius OB Association
- Physics
- 2002
We investigate the stellar population and star formation history of the Upper Scorpius OB association, the most nearby region of recent massive star formation, over the full stellar mass range from…
A synthetic view on structure and evolution of the Milky Way
- Physics
- 2003
Since the Hipparcos mission and recent large scale surveys in the optical and the near-infrared, new constraints have been obtained on the structure and evolution history of the Milky Way. The…
Sequential formation of subgroups in OB associations
- Physics
- 1977
We reconsider the structure and formation of OB association in view of recent radio and infrared observations of the adjacent molecular clouds. As a result of this reexamination, we propose that OB…
Spatial distributions of young stars
- Physics
- 2008
We analyze the spatial distribution of young stars in Taurus-Auriga and Upper Sco, as determined from the two-point correlation function (i.e., the mean surface density of neighbors). The…
Astrophysical supplements to the ASCC‐2.5: Ia. Radial velocities of ∼55000 stars and mean radial velocities of 516 Galactic open clusters and associations
- Physics, Chemistry
- 2007
We present the 2nd version of the Catalogue of Radial Velocities with Astrometric Data (CRVAD-2). This is the result of the cross-identification of stars from the All-Sky Compiled Catalogue of 2.5…
Catalogue général de vitesses radiales moyennes pour les étoiles galactiques. Mean radial velocities catalog of galactic stars
- Physics
- 2000
We present a catalogue of mean radial velocities for Galactic stars which supplements the catalogue WEB (Duflot et al. 1995) with observations published through december 1990. The catalogue contains…
The radial velocity experiment (RAVE): First data release
- Physics, Geology
- 2006
The first data release of the Radial Velocity Experiment (RAVE) is presented and it is demonstrated that the radial velocities derived for the first data set do not show any systematic trend with color or signal-to-noise ratio.