The Age of the Universe

Details The Age of the Universe The Age of the Universe

1998-08-19

arxiv.org/abs/astro-ph/9808200v1

Phys.Rept. 307 (1998) 23-30

Astronomy and Astrophysics

Astrophysics

invited review to appear in Physics Reports

Scientific paper

10.1016/S0370-1573(98)00054-4

A minimum age of the universe can be estimated directly by determining the age of the oldest objects in the our Galaxy. These objects are the metal-poor stars in the halo of the Milky Way. Recent work on nucleochronology finds that the oldest stars are 15.2+/-3.7 Gyr old. White dwarf cooling curves have found a minimum age for the oldest stars of 8 Gyr. Currently, the best estimate for the age of the oldest stars is based upon the absolute magnitude of the main sequence turn-off in globular clusters. The oldest globular clusters are 11.5+/-1.3 Gyr old, implying a minimum age of the universe of t_universe > 9.5 Gyr (95% confidence level).

Affiliated with

Also associated with

No associations

Rating

The Age of the Universe 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 The Age of the Universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Age of the Universe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-610744