Advanced search

Filter By:

Journal Check one or more journals to show results from those journals only.

Choose more journals

Article type Check one or more article types to show results from those article types only.
Subject Check one or more subjects to show results from those subjects only.
Date Choose a date option to show results from those dates only.

Custom date range

Clear all filters
Sort by:
Showing 1–3 of 3 results
Advanced filters: Author: P. Miocchi Clear advanced filters

  • Globular clusters can be grouped into a few distinct families on the basis of the radial distribution of ‘blue stragglers’, stars with masses greater than those at the turn-off point on the main sequence; this grouping can yield a direct measure of the cluster’s dynamical age purely from observed properties.

    • F. R. Ferraro
    • B. Lanzoni
    • A. Mucciarelli
    Research
    Nature
    Volume: 492, P: 393-395

  • 'Blue straggler' stars lie on or near the main sequence of star clusters and are sufficiently massive that they should have evolved into white dwarfs long ago. Two possible mechanisms have been proposed for their formation: mass transfer between binary companions and stellar mergers resulting from direct collisions between two stars. Here, two distinct parallel sequences of blue stragglers are reported in the globular cluster M 30, one arising from the evolution of close binaries, the other from direct collisions.

    • F. R. Ferraro
    • G. Beccari
    • S. Bovinelli
    Research
    Nature
    Volume: 462, P: 1028-1031