1. The Discovery of a Gravitationally Lensed Supernova Ia at Redshift 2.22
- Author
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Nao Suzuki, Mark Brodwin, Steven Williams, Susana E. Deustua, R. R. Gupta, Brian Hayden, K. Barbary, David Rubin, A. L. Spadafora, Zachary Raha, S. Dixon, Eric V. Linder, Kyle Boone, Rahman Amanullah, Pilar Ruiz-Lapuente, S. A. Stanford, C. Lidman, Marek Kowalski, A. S. Fruchter, Ariel Goobar, D. Stern, Anthony H. Gonzalez, M. J. Jee, Clare Saunders, Jakob Nordin, Kyle Luther, Reynald Pain, X. Huang, A. G. Kim, Greg Aldering, Caroline Sofiatti, Isobel Hook, Saul Perlmutter, M. Rigault, Peter Eisenhardt, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and Supernova Cosmology Project more...
- Subjects
galaxies: clusters: individual ,Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,astro-ph.GA ,FOS: Physical sciences ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astronomy & Astrophysics ,01 natural sciences ,Atomic ,Physical Chemistry ,Particle and Plasma Physics ,gravitational lensing: weak ,weak [gravitational lensing] ,0103 physical sciences ,Nuclear ,010303 astronomy & astrophysics ,Galaxy cluster ,Weak gravitational lensing ,Astrophysics::Galaxy Astrophysics ,clusters: individual (MOO J1014+0038) supernovae: general [galaxies] ,Physics ,Very Large Telescope ,010308 nuclear & particles physics ,Molecular ,Astronomy and Astrophysics ,Light curve ,Astrophysics - Astrophysics of Galaxies ,Galaxy ,Redshift ,observations [cosmology] ,Supernova ,Gravitational lens ,Space and Planetary Science ,Astrophysics of Galaxies (astro-ph.GA) ,cosmology: observations ,astro-ph.CO ,Astrophysics::Earth and Planetary Astrophysics ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ,Astronomical and Space Sciences ,Astrophysics - Cosmology and Nongalactic Astrophysics ,Physical Chemistry (incl. Structural) - Abstract
We present the discovery and measurements of a gravitationally lensed supernova (SN) behind the galaxy cluster MOO J1014+0038. Based on multi-band Hubble Space Telescope and Very Large Telescope (VLT) photometry of the supernova, and VLT spectroscopy of the host galaxy, we find a 97.5% probability that this SN is a SN Ia, and a 2.5% chance of a CC SN. Our typing algorithm combines the shape and color of the light curve with the expected rates of each SN type in the host galaxy. With a redshift of 2.2216, this is the highest redshift SN Ia discovered with a spectroscopic host-galaxy redshift. A further distinguishing feature is that the lensing cluster, at redshift 1.23, is the most distant to date to have an amplified SN. The SN lies in the middle of the color and light-curve shape distributions found at lower redshift, disfavoring strong evolution to z = 2.22. We estimate an amplification due to gravitational lensing of 2.8+0.6-0.5 (1.10 +- 0.23 mag)---compatible with the value estimated from the weak-lensing-derived mass and the mass-concentration relation from LambdaCDM simulations---making it the most amplified SN Ia discovered behind a galaxy cluster., Comment: Accepted for publication in ApJ more...
- Published
- 2018
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