Setting the stellar evolution clock for intermediate age populations

Details Setting the stellar evolution clock for intermediate age populations Setting the stellar evolution clock for intermediate age populations

1999-06-04

arxiv.org/abs/astro-ph/9906072v1

Astronomy and Astrophysics

Astrophysics

Invited talk at the meeting "Spectrophotometric dating of stars and galaxies", Annapolis, USA, May 1999

Scientific paper

In this invited talk I show how the reddest and rarest galaxies at high redshift ($z \simeq 1.5$) can be used to set the stellar evolution clock. I argue that one can confidently compute the collapse redshift of these objects. This yields to a high collapse redshift ($z>6$) and therefore their age is well constrained (in all cosmologies) between 3 and 4 Gyr. I also show that this is, indeed, the age derived using a variety of synthetic stellar population models when proper statistical tools are used to analyse their observed spectral energy distribution. This allows me to conclude that all stellar population models yield to the same consistent age for these galaxies, i.e. about 3.5 Gyr and that the stellar clock is properly set. Low ages are therefore excluded with high confidence.

Affiliated with

Also associated with

No associations

Rating

Setting the stellar evolution clock for intermediate age populations 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 Setting the stellar evolution clock for intermediate age populations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Setting the stellar evolution clock for intermediate age populations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-126389