Open Clusters and Stellar Evolution
نویسندگان
چکیده
منابع مشابه
Critical tests of stellar evolution in open clusters II . Membership , duplicity , and stellar and dynamical evolution in NGC 3680 ? , ? ?
Based on new, accurate photometry, radial velocities, and proper motions for the intermediate-age open cluster NGC 3680, we identify individual single and binary cluster members and field stars in the colour-magnitude diagram (CMD). This basic step turns out to be crucial for a proper understanding of the cluster CMD: ∼60% of the stars are found to be field stars, and over 50% of the cluster st...
متن کاملEarly Evolution of Stellar Clusters
Observations have revealed that most stars are born in clusters. These systems, containing from tens to thousands of stars and typically significant mass in gas in the youngest systems, evolve due to a combination of stellar and star-gas interactions. Simulations of pure stellar systems are used to investigate possible initial configurations including ellipticity, substructure and mass segregat...
متن کاملThe dynamical evolution of stellar super - clusters
Recent images taken with the Hubble Space Telescope (HST) of the interacting disk galaxies NGC 4038/4039 (the Antennae) reveal clusters of many dozens and possibly hundreds of young compact massive star clusters within projected regions spanning about 100 to 500 pc. It is shown here that a large fraction of the individual star clusters merge within a few tens to a hundred Myr. Bound stellar sys...
متن کاملEvolution of stellar collision products in open clusters . II . A grid of low - mass collisions
In a companion paper we studied the detailed evolution of stellar collision products that occurred in an N-body simulation of the old open cluster M67 and compared our detailed models to simple prescriptions. In this paper we extend this work by studying the evolution of the collision products in open clusters as a function of mass and age of the progenitor stars. We calculated a grid of head-o...
متن کاملThe Stellar Imf of Galactic Clusters and Its Evolution
We show that one can obtain a good fit to the measured main sequence mass function (MF) of a large sample of Galactic clusters (young and old) with a tapered Salpeter power law distribution function with an exponential truncation. The average value of the power law index is very close to Salpeter (∼ 2.3), whereas the characteristic mass is in the range 0.1− 0.5M⊙ and does not seem to vary in a ...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1980
ISSN: 0074-1809
DOI: 10.1017/s0074180900091841