Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...143....8c&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 143, no. 1, Feb. 1985, p. 8-12. Sponsorship: Conselho Nacional de Pesquisas of
Astronomy and Astrophysics
Astrophysics
6
Globular Clusters, Interstellar Extinction, Red Shift, Variable Stars, Carbon, Distance, Hertzsprung-Russell Diagram, Horizontal Branch Stars, Lyra Constellation, Main Sequence Stars, Nitrogen, Oxygen, Stellar Evolution, Stellar Models
Scientific paper
It is shown that pulsational properties of RR Lyrae variables in globular clusters can be used to put theoretical constraints on the values of cluster reddening and distance modulus. By requiring that the HR diagram location of pulsators agrees with the period distribution observed and with the theoretical boundaries of the instability strip, reddening and distance modulus of the globular cluster M4 are derived as a (slow) function of the pulsator masses. Thus, a best guess is presented for the cluster age (t = 12.2 billion years), some evidence for a non-canonical evolutionary having been taken into account.
Caputo Filippina
Castellani Vittorio
Quarta M. L.
No associations
LandOfFree
Reddening, distance modulus and age of the globular cluster NGC 6121 (M4) from the properties of RR Lyrae variables 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 Reddening, distance modulus and age of the globular cluster NGC 6121 (M4) from the properties of RR Lyrae variables, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reddening, distance modulus and age of the globular cluster NGC 6121 (M4) from the properties of RR Lyrae variables will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1589968