See Change: the Supernova Sample from the Supernova Cosmology Project High Redshift Cluster Supernova Survey

Brian Hayden, Saul Perlmutter, Kyle Boone, Jakob Nordin, David Rubin, Chris Lidman, Susana E. Deustua, Andrew S. Fruchter, Greg Scott Aldering, Mark Brodwin, Carlos E. Cunha, Peter R. Eisenhardt, Anthony H. Gonzalez, James Jee, Hendrik Hildebrandt, Henk Hoekstra, Joana Santos, S. Adam Stanford, Daniel Stern, Rene FassbenderJohan Richard, Piero Rosati, Risa H. Wechsler, Adam Muzzin, Jon Willis, Hans Boehringer, Michael Gladders, Ariel Goobar, Rahman Amanullah, Isobel Hook, Dragan Huterer, Xiaosheng Huang, Alex G. Kim, Marek Kowalski, Eric Linder, Reynald Pain, Clare Saunders, Nao Suzuki, Kyle H. Barbary, Eli S. Rykoff, Joshua Meyers, Anthony L. Spadafora, Caroline Sofiatti, Gillian Wilson, Eduardo Rozo, Matt Hilton, Pilar Ruiz-Lapuente, Kyle Luther, Mike Yen, Parker Fagrelius, Samantha Dixon, Steven Williams

Research output: Contribution to conferencePaper

Abstract

The Supernova Cosmology Project has finished executing a large (174 orbits, cycles 22-23) Hubble Space Telescope program, which has measured ~30 type Ia Supernovae above z~1 in the highest-redshift, most massive galaxy clusters known to date. Our SN Ia sample closely matches our pre-survey predictions; this sample will improve the constraint by a factor of 3 on the Dark Energy equation of state above z~1, allowing an unprecedented probe of Dark Energy time variation. When combined with the improved cluster mass calibration from gravitational lensing provided by the deep WFC3-IR observations of the clusters, See Change will triple the Dark Energy Task Force Figure of Merit. With the primary observing campaign completed, we present the preliminary supernova sample and our path forward to the supernova cosmology results. We also compare the number of SNe Ia discovered in each cluster with our pre-survey expectations based on cluster mass and SFR estimates. Our extensive HST and ground-based campaign has already produced unique results; we have confirmed several of the highest redshift cluster members known to date, confirmed the redshift of one of the most massive galaxy clusters at z~1.2 expected across the entire sky, and characterized one of the most extreme starburst environments yet known in a z~1.7 cluster. We have also discovered a lensed SN Ia at z=2.22 magnified by a factor of ~2.7, which is the highest spectroscopic redshift SN Ia currently known.
Original languageEnglish
Pages341.08
Publication statusPublished - 1 Jan 2017

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