The formation rate of blue stragglers in 47 Tucanae

Alison Sills, Charles D. Bailyn, Peter D. Edmonds, Ronald L. Gilliland

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


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. Comparison of 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 stragglers 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.

Original languageEnglish (US)
Pages (from-to)298-303
Number of pages6
JournalAstrophysical Journal
Issue number1 PART 1
StatePublished - May 20 2000

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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