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The Discovery of a ...
The Discovery of a Gravitationally Lensed Supernova Ia at Redshift 2.22
- Article/chapterEnglish2018
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2018-10-15
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American Astronomical Society,2018
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LIBRIS-ID:oai:DiVA.org:su-161970
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-161970URI
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https://doi.org/10.3847/1538-4357/aad565DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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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(-0.5)(+0.6) (1.10 +/- 0.23 mag)-compatible with the value estimated from the weak-lensing-derived mass and the mass-concentration relation from Lambda CDM simulations-making it the most amplified SN Ia discovered behind a galaxy cluster.
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Hayden, B.
(author)
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Huang, X.
(author)
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Aldering, G.
(author)
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Amanullah, RahmanStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)rahman
(author)
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Barbary, K.
(author)
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Boone, K.
(author)
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Brodwin, M.
(author)
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Deustua, S. E.
(author)
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Dixon, S.
(author)
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Eisenhardt, P.
(author)
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Fruchter, A. S.
(author)
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Gonzalez, A. H.
(author)
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Goobar, ArielStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)ariel
(author)
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Gupta, R. R.
(author)
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Hook, I.
(author)
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Jee, M. J.
(author)
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Kim, A. G.
(author)
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Kowalski, M.
(author)
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Lidman, C. E.
(author)
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Linder, E.
(author)
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Luther, K.
(author)
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Nordin, J.
(author)
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Pain, R.
(author)
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Perlmutter, S.
(author)
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Raha, Z.
(author)
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Rigault, M.
(author)
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Ruiz-Lapuente, P.
(author)
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Saunders, C. M.
(author)
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Sofiatti, C.
(author)
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Spadafora, A. L.
(author)
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Stanford, S. A.
(author)
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Stern, D.
(author)
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Suzuki, N.
(author)
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Williams, S. C.
(author)
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Stockholms universitetFysikum
(creator_code:org_t)
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In:Astrophysical Journal: American Astronomical Society866:10004-637X1538-4357
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Rubin, D.
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Hayden, B.
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Huang, X.
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Aldering, G.
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Amanullah, Rahma ...
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Barbary, K.
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show more...
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Boone, K.
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Brodwin, M.
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Deustua, S. E.
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Dixon, S.
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Eisenhardt, P.
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Fruchter, A. S.
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Gonzalez, A. H.
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Goobar, Ariel
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Gupta, R. R.
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Hook, I.
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Jee, M. J.
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Kim, A. G.
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Kowalski, M.
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Lidman, C. E.
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Linder, E.
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Luther, K.
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Nordin, J.
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Pain, R.
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Perlmutter, S.
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Raha, Z.
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Rigault, M.
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Ruiz-Lapuente, P ...
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Saunders, C. M.
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Sofiatti, C.
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Spadafora, A. L.
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Stanford, S. A.
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Stern, D.
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Suzuki, N.
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Williams, S. C.
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Stockholm University