A Survey for Supernovae in Massive High-Redshift Clusters

Details A Survey for Supernovae in Massive High-Redshift Clusters A Survey for Supernovae in Massive High-Redshift Clusters

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hst..prop10493g&link_type=abstract

HST Proposal ID #10493

Astronomy and Astrophysics

Astrophysics

Hst Proposal Id #10493 Cosmology

Scientific paper

We propose to measure, to an unprecedented 30% accuracy, the SN-Ia rate in a sample of massive z=0.5-0.9 galaxy clusters. The SN-Ia rate is a poorly known observable, especially at high z, and in cluster environments. The SN rate and its redshift dependence can serve as powerful discrimiminants for a number of key issues in astrophysics and cosmology. Our observations will: 1. Put clear constraints on the characteristic SN-Ia "delay time, " the typical time between the formation of a stellar population and the explosion of some of its members as SNe-Ia. Such constraints can exclude entire categories of SN-Ia progenitor models, since different models predict different delays. 2. Help resolve the question of the dominant source of the high metallicity in the intracluster medium {ICM} - SNe-Ia, or core-collapse SNe from an early stellar population with a top-heavy IMF, perhaps those population III stars responsible for the early re-ionization of the Universe. Since clusters are excellent laboratories for studying enrichment {they generally have a simple star-formation history, and matter cannot leave their deep potentials}, the results will be relevant for understanding metal enrichment in general, and the possible role of first generation stars in early Universal enrichment. 3. Reveal, via nuclear variability, the AGN fraction in clusters at this redshift, to be compared with the field AGN fraction. This will be valuable input for understanding black-hole demographics, AGN evolution, and ICM energetics. 4. Potentially discover intergalactic cluster SNe, which can trace the stripped stellar population at high z.

Affiliated with

Also associated with

No associations

Rating

A Survey for Supernovae in Massive High-Redshift Clusters 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 A Survey for Supernovae in Massive High-Redshift Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Survey for Supernovae in Massive High-Redshift Clusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1250148