Rights statement: This is an author-created, un-copyedited version of an article accepted for publication/published in The Astrophysical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi: 10.3847/1538-4357/aad565
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - The Discovery of a Gravitationally Lensed Supernova Ia at Redshift 2.22
AU - Rubin, David
AU - Hayden, Brian
AU - Huang, Xiaosheng
AU - Aldering, Greg
AU - Amanullah, Rahman
AU - Barbary, Kyle
AU - Boone, Kyle
AU - Brodwin, Mark
AU - Deustua, Susana E.
AU - Dixon, Sam
AU - Eisenhardt, Peter
AU - Fruchter, Andrew S.
AU - Gonzalez, Anthony H.
AU - Goobar, Ariel
AU - Gupta, Ravi R.
AU - Hook, Isobel
AU - Jee, M. James
AU - Kim, Alex G.
AU - Kowalski, Marek
AU - Lidman, Chris E.
AU - Linder, Eric
AU - Luther, Kyle
AU - Nordin, Jakob
AU - Pain, Reynald
AU - Perlmutter, Saul
AU - Raha, Zachary
AU - Rigault, Mickael
AU - Ruiz-Lapuente, Pilar
AU - Saunders, Clare M.
AU - Sofiatti, Caroline
AU - Spadafora, Anthony L.
AU - Stanford, S. Adam
AU - Stern, Daniel
AU - Suzuki, Nao
AU - Williams, Steven C.
N1 - This is an author-created, un-copyedited version of an article accepted for publication/published in The Astrophysical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi: 10.3847/1538-4357/aad565
PY - 2018/10/15
Y1 - 2018/10/15
N2 - 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.
AB - 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.
KW - astro-ph.GA
KW - astro-ph.CO
KW - cosmology: observations
KW - galaxies: clusters: individual
KW - (MOO J1014+0038 supernovae: general)
KW - gravitational lensing: weak
U2 - 10.3847/1538-4357/aad565
DO - 10.3847/1538-4357/aad565
M3 - Journal article
VL - 866
JO - The Astrophysical Journal
JF - The Astrophysical Journal
SN - 0004-637X
IS - 1
M1 - 65
ER -