{ "id": "1503.08822", "version": "v1", "published": "2015-03-30T20:00:22.000Z", "updated": "2015-03-30T20:00:22.000Z", "title": "HII Region Metallicity Constraints Near the Site of the Strongly Lensed Supernova \"SN Refsdal\" at Redshift 1.49", "authors": [ "T. -T. Yuan", "C. Kobayashi", "L. J. Kewley" ], "comment": "5 pages, 3 figures, 1 table; accepted for publication in ApJ Letters", "categories": [ "astro-ph.GA", "astro-ph.CO" ], "abstract": "We present the local HII region metallicity near the site of the recently discovered multiply lensed supernova (SN; \"SN Refsdal\") at redshift 1.49. \"SN Refsdal\" is located at the outer spiral arm ($\\sim$7 kpc) of the lensed host galaxy, which we have previously reported to exhibit a steep negative galactocentric metallicity gradient. Based on our updated near-infrared integral field spectroscopic data, the gas-phase metallicity averaged in an intrinsic radius of $\\sim$ 550 pc surrounding an HII region $\\sim$ 200 pc away from the SN site is 12 + log(O/H)$_{\\rm PP04N2}$ $\\le$ 8.67. The metallicity averaged over nine HII regions at similar galactocentric distances ($\\sim$5-7 kpc) as \"SN Refsdal\" is constrained to be 12 + log(O/H)$_{\\rm PP04N2}$ $\\le$ 8.11. Given the fortuitous discovery of \"SN Refsdal\" in an advantageously lensed face-on spiral, this is the first observational constraint on the local metallicity environment of an SN site at redshift $z>1$.", "revisions": [ { "version": "v1", "updated": "2015-03-30T20:00:22.000Z" } ], "analyses": { "keywords": [ "sn refsdal", "hii region metallicity constraints", "strongly lensed supernova", "integral field spectroscopic data", "negative galactocentric metallicity gradient" ], "publication": { "doi": "10.1088/2041-8205/804/1/L14" }, "note": { "typesetting": "TeX", "pages": 5, "language": "en", "license": "arXiv", "status": "editable", "inspire": 1357150 } } }