A study of the SMC cluster NGC 330

Details A study of the SMC cluster NGC 330 A study of the SMC cluster NGC 330

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ssrv...66..421c&link_type=abstract

Space Science Reviews, Volume 66, Issue 1-4, pp. 421-424

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Scientific paper

We analyze the properties of the SMC cluster NGC 330 on the basis of a new CMD and of published effective temperatures and bolometric magnitudes for a smaller sample of stars (Caloi et al 1993, Stothers & Chin 1992a,b) to check for the kind of mixing taking place in massive stars. The existence of a few stars in the so-called HR gap led Stothers & Chin (1993) to claim that only models with semiconvective mixing and OPAL could match the HR diagram, whereas induced Caloi et al (1993) to conclude that neither semiconvective nor overshoot models are suited. The careful analysis of this cluster with new stellar models indicates that 1) models with convective overshoot and models with semiconvection can both explain the gross features of the HR diagram, 2) models with overshoot ought to be preferred.

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