Supernovae at z>1.5 from HST

Details Supernovae at z>1.5 from HST Supernovae at z>1.5 from HST

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21941902r&link_type=abstract

American Astronomical Society, AAS Meeting #219, #419.02

Astronomy and Astrophysics

Astronomy

Scientific paper

Future measurements of dark energy from growing samples of high-redshift type Ia supernovae will require an advancement in our understanding of their foundation as indicators of distance. Specifically, we seek to understand the nature of their progenitor systems and the related degree of their evolution as distance indicators.
We are undertaking a three year program to harvest the highest redshift SNe Ia ever observed---perhaps among the very first SNe
Ia in the Universe---found in two Hubble Space Telescope Multi-cycle Treasury programs, CANDELS and CLASH. By acquiring follow-up observations of SNe Ia at 1.5corresponding progenitor models. Without a complete theoretical model of type Ia supernovae in sight, the highest redshift SNe Ia provide the only direct, empirical evidence to constrain evolution in their lower-redshift brethren--those on which dark energy measurements rely. This program is now under way and I will review progress including the first few discoveries.

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