Ages of globular clusters. II

H. Saio

doi:10.1007/BF00648522

Ages of globular clusters. II

H. Saio

Science

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Evolutionary model sequences for (X, Z)=(0.7,4×10^-3) are constructed by using the same input physics and programming code as those of Saio et al. (1977). From these results the ages of globular clusters are estimated under the assumption of constant helium abundance (Y=0.3). The results suggest that there is a correlation between age and metal abundance for the globular clusters and that metal enrichment in the Galaxy slowly proceeded in several billion years from the value of the extreme Population II stars to that of the Population I stars. Comparison with some models of chemical evolution of galaxies is briefly made.

Original language	English
Pages (from-to)	93-103
Number of pages	11
Journal	Astrophysics and Space Science
Volume	50
Issue number	1
DOIs	https://doi.org/10.1007/BF00648522
Publication status	Published - 1977 Aug

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1007/BF00648522

Cite this

@article{02334de691044a47ac9a67475f5882b3,

title = "Ages of globular clusters. II",

abstract = "Evolutionary model sequences for (X, Z)=(0.7,4×10-3) are constructed by using the same input physics and programming code as those of Saio et al. (1977). From these results the ages of globular clusters are estimated under the assumption of constant helium abundance (Y=0.3). The results suggest that there is a correlation between age and metal abundance for the globular clusters and that metal enrichment in the Galaxy slowly proceeded in several billion years from the value of the extreme Population II stars to that of the Population I stars. Comparison with some models of chemical evolution of galaxies is briefly made.",

author = "H. Saio",

year = "1977",

month = aug,

doi = "10.1007/BF00648522",

language = "English",

volume = "50",

pages = "93--103",

journal = "Astrophysics and Space Science",

issn = "0004-640X",

publisher = "Springer Netherlands",

number = "1",

}

TY - JOUR

T1 - Ages of globular clusters. II

AU - Saio, H.

PY - 1977/8

Y1 - 1977/8

N2 - Evolutionary model sequences for (X, Z)=(0.7,4×10-3) are constructed by using the same input physics and programming code as those of Saio et al. (1977). From these results the ages of globular clusters are estimated under the assumption of constant helium abundance (Y=0.3). The results suggest that there is a correlation between age and metal abundance for the globular clusters and that metal enrichment in the Galaxy slowly proceeded in several billion years from the value of the extreme Population II stars to that of the Population I stars. Comparison with some models of chemical evolution of galaxies is briefly made.

AB - Evolutionary model sequences for (X, Z)=(0.7,4×10-3) are constructed by using the same input physics and programming code as those of Saio et al. (1977). From these results the ages of globular clusters are estimated under the assumption of constant helium abundance (Y=0.3). The results suggest that there is a correlation between age and metal abundance for the globular clusters and that metal enrichment in the Galaxy slowly proceeded in several billion years from the value of the extreme Population II stars to that of the Population I stars. Comparison with some models of chemical evolution of galaxies is briefly made.

UR - http://www.scopus.com/inward/record.url?scp=34250300060&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34250300060&partnerID=8YFLogxK

U2 - 10.1007/BF00648522

DO - 10.1007/BF00648522

M3 - Article

AN - SCOPUS:34250300060

SN - 0004-640X

VL - 50

SP - 93

EP - 103

JO - Astrophysics and Space Science

JF - Astrophysics and Space Science

IS - 1

ER -

Ages of globular clusters. II

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this