Internal kinematics of A and F dwarf stars in C0318 + 484

Details Internal kinematics of A and F dwarf stars in C0318 + 484 Internal kinematics of A and F dwarf stars in C0318 + 484

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....92..367f&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 92, Aug. 1986, p. 367-370.

Statistics

Computation

1

A Stars, F Stars, Main Sequence Stars, Radial Velocity, Star Clusters, Stellar Interiors, Stellar Motions, Stellar Spectrophotometry, Big Bang Cosmology, Distance, Kinematics, Velocity Distribution

Scientific paper

Spatial velocities of C0318+484 members in the apparent visual magnitude range of 8 - 11 (mostly A and F main-sequence stars) are determined by photographic proper motion and objective-prism radial-velocity observations and compilation of dereddened photometric distances. The velocity ellipsoid resulting from 85 member stars is used to calibrate the dereddened photometric distances of stars whose radial and tangential velocities have been measured. An additional 82 stars are found to be in the cluster space limits of 32×64 pc parallel to the galactic plane and with a thickness of 16 pc perpendicular to the galactic plane. A velocity gradient is detected in the cluster that allows a computation of the initial internal velocity before the estimated dynamical expansion began 107years ago.

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