Mathematics – Logic
Scientific paper
Jul 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...411..200f&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 411, no. 1, p. 200-206.
Mathematics
Logic
16
Elementary Particles, Energy Transfer, Globular Clusters, Stellar Evolution, Stellar Interiors, Stellar Luminosity, Subgiant Stars, Charge Coupled Devices, Cosmology, Main Sequence Stars, Red Giant Stars
Scientific paper
It has been reported (Tayler, 1986; VandenBerg, 1989) that 'preferred ages' of globular clusters found from studies of stellar evolution tend to be somewhat older than the 'cosmological age' of the universe. This paper presents observational evidence gathered with the purpose of investigating the conventional concepts of the late main-sequence and sub-giant branch evolution of globular cluster stars. It is pointed out that the difficulties with these supposedly 'well-understood' phases of stellar evolution manifest themselves in both sub-giant and red-giant branch anomalies in recent accurate CCD-derived luminosity functions. It is shown that the anomalies, now known to exist in four classical metal-weak clusters, including the M92 and M30, are consistent with simple predicted consequences of highly efficient central energy transport inside such stars. On the basis of these results, it is concluded that globular clusters may be younger than usually considered, by up to about 20 percent.
Faulkner John
Swenson Fritz J.
No associations
LandOfFree
Sub-giant branch evolution and efficient central energy transport does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Sub-giant branch evolution and efficient central energy transport, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sub-giant branch evolution and efficient central energy transport will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1069051