Direct N-body modelling of stellar populations: blue stragglers in M67
نویسندگان
چکیده
منابع مشابه
Simple stellar population models including blue stragglers
Observations show that nearly all star clusters and stellar populations contain blue straggler stars (BSs). BSs in a cluster can significantly enhance the integrated spectrum of the host population, preferentially at short wavelengths, and render it much bluer in photometric colours. Current theoretical simple stellar population (SSP) models constructed within the traditional framework of singl...
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We investigate the structure and evolution of blue stragglers stars which were formed from direct stellar collisions between main sequence stars in globular clusters. In particular, we look at the rotational evolution of the products of off-axis collisions. As found in previous work, such blue stragglers initially have too high an angular momentum to contract down to the main–sequence. We consi...
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Blue compact galaxies (BCGs) are compact galaxies that are dominated by intense star formation. Comparing the observational properties with the predictions of the stellar population synthesis model, we have analyzed the nuclear stellar population and emission line spectra in a sample of 10 BCGs. The results indicate that the continuum flux fractions at 5870 Å due to old stellar components and y...
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We have used the results of recent smoothed particle hydrodynamic simulations of colliding stars to create models appropriate for input into a stellar evolution code. In evolving these models, we find that little or no surface convec-tion occurs, precluding angular momentum loss via a magnetically-driven stellar wind as a viable mechanism for slowing rapidly rotating blue stragglers which have ...
متن کاملThe blue stragglers formed via mass transfer in old open clusters
In this paper, we present the simulations for the primordial blue stragglers in the old open cluster M67 based on detailed modelling of the evolutionary processes. The principal aim is to discuss the contribution to the blue straggler population in M67 from mass transfer between the components of close binaries. Firstly, we follow the evolution of a binary of 1.4M⊙+0.9M⊙. The synthetic evolutio...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2001
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.2001.04220.x