See Change: Classifying single observation transients from HST using SNCosmo

Caroline Sofiatti Nunes, Saul Perlmutter, 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, Myungkook J. Jee, Hendrik Hildebrandt, Henk Hoekstra, Joana Santos, S. Adam Stanford, Dana R. Stern, Rene Fassbender, Johan RichardPiero Rosati, Risa H. Wechsler, Adam Muzzin, Jon Willis, Hans Boehringer, Michael Gladders, Ariel Goobar, Rahman Amanullah, Isobel Hook, Dragan Huterer, Jiasheng 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, Brian Hayden, Gillian Wilson, Eduardo Rozo, Matt Hilton, Samantha Dixon, Mike Yen

Research output: Contribution to conferencePaper

Abstract

The Supernova Cosmology Project (SCP) is executing "See Change", a large HST program to look for possible variation in dark energy using supernovae at z>1. As part of the survey, we often must make time-critical follow-up decisions based on multicolor detection at a single epoch. We demonstrate the use of the SNCosmo software package to obtain simulated fluxes in the HST filters for type Ia and core-collapse supernovae at various redshifts. These simulations allow us to compare photometric data from HST with the distribution of the simulated SNe through methods such as Random Forest, a learning method for classification, and Gaussian Kernel Estimation. The results help us make informed decisions about triggered follow up using HST and ground based observatories to provide time-critical information needed about transients. Examples of this technique applied in the context of See Change are shown.
Original languageEnglish
Pages139.10
Publication statusPublished - 1 Jan 2016

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