HII Region Metallicity Constraints Near the Site of the Strongly Lensed Supernova "SN Refsdal" at Redshift 1.49

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)${}_{PP04N2}$ $\le$ 8.67. The metallicity averaged over nine HII regions at similar galactocentric distances ($\sim$5-7 kpc) as "SN Refsdal" is constrained to be 12 + log(O/H)${}_{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 $z>1$.

5 pages, 3 figures, 1 table; accepted for publication in ApJ Letters

References in corpus (10)

• Physical Properties of Wolf-Rayet Stars
• Galactic chemical evolution: Carbon through Zinc
• Measured Metallicities at the Sites of Nearby Broad-Lined Type Ic Supernovae and Implications for the SN-GRB Connection
• Feedback and metal enrichment in cosmological SPH simulations - II. A multiphase model with supernova energy feedback
• Simulations of Cosmic Chemical Enrichment
• Pair creation supernovae at low and high redshift
• Progenitor Diagnostics for Stripped Core-Collapse Supernovae: Measured Metallicities at Explosion Sites
• Revised Lens Model for the Multiply-Imaged Lensed Supernova, "SN Refsdal", in MACS J1149+2223
• Chemodynamics of a Simulated Disc Galaxy: Initial Mass Functions and SNIa Progenitors
• Predicted properties of multiple images of the strongly lensed supernova SN Refsdal

Cited by in corpus (3)

• The Magnificent Five Images of Supernova Refsdal: Time Delay and Magnification Measurements
• The most ancient spiral galaxy: a 2.6-Gyr-old disk with a tranquil velocity field
• The AGEL Survey: Spectroscopic Confirmation of Strong Gravitational Lenses in the DES and DECaLS Fields Selected Using Convolutional Neural Networks