The OSACA Database and a Kinematic Analysis of Stars in the Solar Neighborhood

Abstract

We transformed radial velocities compiled from more than 1400 published sources, including the Geneva--Copenhagen survey of the solar neighborhood (CORAVEL-CfA), into a uniform system based on the radial velocities of 854 standard stars in our list. This enabled us to calculate the average weighted radial velocities for more than 25~000 HIPPARCOS stars located in the local Galactic spiral arm (Orion arm) with a median error of +-1 km/s. We use these radial velocities together with the stars' coordinates, parallaxes, and proper motions to determine their Galactic coordinates and space velocities. These quantities, along with other parameters of the stars, are available from the continuously updated Orion Spiral Arm CAtalogue (OSACA) and the associated database. We perform a kinematic analysis of the stars by applying an Ogorodnikov-Milne model to the OSACA data. The kinematics of the nearest single and multiple main-sequence stars differ substantially. We used distant (r\approx 0.2 kpc) stars of mixed spectral composition to estimate the angular velocity of the Galactic rotation -25.7+-1.2 km/s/kpc, and the vertex deviation,l=13+-2 degrees, and detect a negative K effect. This negative K effect is most conspicuous in the motion of A0-A5 giants, and is equal to K=-13.1+-2.0 km/s/kpc.

16 pages, 8 figures

References in corpus (1)

• Kinematic Peculiarities of Gould Belt Stars

Cited by in corpus (19)

• BANYAN. XI. The BANYAN $\Sigma$ multivariate Bayesian algorithm to identify members of young associations within 150 pc
• A self-consistent, absolute isochronal age scale for young moving groups in the solar neighbourhood
• A catalogue of young runaway Hipparcos stars within 3kpc from the Sun
• Astrophysical supplements to the ASCC-2.5. Ia. Radial velocities of about 55000 stars and mean radial velocities of 516 Galactic open clusters and associations
• Planetary Construction Zones in Occultation: Discovery of an Extrasolar Ring System Transiting a Young Sun-like Star and Future Prospects for Detecting Eclipses by Circumsecondary and Circumplanetary Disks
• Beryllium and Alpha-Element Abundances in a Large Sample of Metal-Poor Stars
• Search for associations containing young stars (SACY). V. Is multiplicity universal? Tight multiple systems
• Galactic masers: kinematics, spiral structure and the disk dynamic state
• ACRONYM III: Radial Velocities for 336 Candidate Young Low-Mass Stars in the Solar Neighborhood, Including 78 Newly Confirmed Young Moving Group Members
• Six New Galactic Orbits of Globular Clusters in a Milky-Way-Like Galaxy
• Two new ultra-cool benchmark systems from WISE+2MASS
• A stellar census of the nearby, young 32 Orionis group
• The Metallicity Dependence of Giant Planet Incidence
• SPYGLASS. III. The Fornax-Horologium Association and its Traceback History within the Austral Complex
• SPYGLASS. II. The Multi-Generational and Multi-Origin Star Formation History of Cepheus Far North
• Hercules and Wolf 630 Stellar Streams and Galactic Bar Kinematics
• The Radial and Rotational Velocity of $\zeta$ Ophiuchi
• A New Titanium Oxide Index in Visual Band
• Determining the Galactic Bar Parameters based on the Hercules and Wolf 630 Stellar Streams