ar X iv : a st ro - p h / 99 11 02 3 v 1 2 N ov 1 99 9 Draft for the Astrophysical Journal , February 1 , 2008 The Formation Rate of Blue Stragglers
نویسندگان
چکیده
We investigate the effects of changes in the blue straggler formation rate in globular clusters on the blue straggler distribution in the color-magnitude diagram. We find that the blue straggler distribution is highly sensitive to the past formation rate. Comparing our models to new UBV observations of a region close to the core of 47 Tucanae suggests that this cluster may have stopped forming blue straggler formation several Gyr ago. This cessation of formation can be associated with an epoch of primordial binary burning which has been invoked in other clusters to infer the imminence of core collapse. Subject headings: blue stragglers – globular clusters – 47 Tucanae
منابع مشابه
ar X iv : a st ro - p h / 99 11 43 8 v 1 2 3 N ov 1 99 9 H 2 molecules and cold clouds in cooling flow clusters †
متن کامل
ar X iv : a st ro - p h / 96 11 14 3 v 1 1 9 N ov 1 99 6 A high deuterium abundance in the early Universe
متن کامل
ar X iv : a st ro - p h / 99 11 40 7 v 1 2 2 N ov 1 99 9 The First Five Minutes of a Core Collapse Super - nova : Multidimensional Hydrodynamic Models
متن کامل
ar X iv : a st ro - p h / 97 11 24 4 v 1 2 0 N ov 1 99 7 POPULATION SYNTHESIS OF HIGH ENERGY TRANSIENTS RELATIVISTIC BINARY MERGING RATES
متن کامل
ar X iv : a st ro - p h / 99 11 49 7 v 1 2 9 N ov 1 99 9 Cosmic Microwave Background Anisotropies : Inflation versus Topological Defects
I present a briefly summary of the current status of inflationary models versus topological defects scenarios, as the mechanisms which could have induced the initial density perturbations, which left an imprint on the cosmic microwave backgound radiation anisotropies.
متن کامل