Dynamical studies of globular clusters based on photoelectric radial velocities of individual stars. I - M3

Astronomy and Astrophysics – Astronomy

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

349

Globular Clusters, Radial Velocity, Stellar Motions, Stellar Spectra, Astronomical Catalogs, Stellar Luminosity, Stellar Mass, Stellar Models, Thermodynamic Equilibrium

Scientific paper

Velocities of 111 stars in the globular cluster M3 have been measured by using the Palomar cross-correlation radial-velocity spectrometer. Typical measuring accuracy is about 1 km/s. No velocity variation in nonpulsating stars is found; the implication that the incidence of binarism with separations in the range 0.3-10 AU is very much smaller than in the Population I field is clear. 'Thermal equilibrium' models of the King-Mitchie (1962, 1963) type with several components and anisotropic velocity distributions are constructed and found to represent the cluster dynamics and observed light distribution adequately. The existence of two very high-velocity objects and some difficulty with the Roche limit indicate that the thermal-equilibrium models do not describe the high-energy end of the distribution function adequately. There is no evidence for any very heavy remnants, and no mass that is not accounted for by evolution of the adopted mass function (which is steeper than that in the solar neighborhood).

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Dynamical studies of globular clusters based on photoelectric radial velocities of individual stars. I - M3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dynamical studies of globular clusters based on photoelectric radial velocities of individual stars. I - M3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical studies of globular clusters based on photoelectric radial velocities of individual stars. I - M3 will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1775393

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.