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Empirical Constraints on Core-collapse Supernova Yields Using Very Metal-poor Damped Lyα Absorbers

Nuñez, Evan H. and Kirby, Evan N. and Steidel, Charles C. (2022) Empirical Constraints on Core-collapse Supernova Yields Using Very Metal-poor Damped Lyα Absorbers. Astrophysical Journal, 927 (1). Art. No. 64. ISSN 0004-637X. doi:10.3847/1538-4357/ac470e.

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We place empirical constraints on the yields from zero- and low-metallicity core-collapse supernovae (CCSNe) using abundances measured in very metal-poor (VMP; [Fe/H] ≤ −2) damped Lyα absorbers (DLAs). For some abundance ratios ([N,Al,S/Fe]), VMP DLAs constrain the metal yields of the first SNe more reliably than VMP stars. We compile a large sample of high-S/N VMP DLAs from over 30 yr of literature, most with high-resolution spectral measurements. We infer the initial-mass-function-averaged CCSNe yield from the median values from the DLA abundance ratios of C, N, O, Al, Si, S, and Fe (over Fe and O). We assume that the DLAs are metal-poor enough that they represent galaxies in their earliest stages of evolution, when CCSNe are the only nucleosynthetic sources of the metals we analyze. We compare five sets of zero- and low-metallicity theoretical yields to the empirical yields derived in this work. We find that the five models agree with the DLA yields for ratios containing Si and S. Only one model (Heger & Woosley 2010, hereafter HW10) reproduced the DLA values for N, and one other model (Limongi & Chieffi 2018, hereafter LC18) reproduced [N/O]. We found little change in the theoretical yields with the adoption of an SN explosion landscape (where certain progenitor masses collapse into black holes, contributing no yields) onto HW10, but fixing explosion energy to progenitor mass results in wide disagreements between the predictions and DLA abundances. We investigate the adoption of a simple, observationally motivated initial distribution of rotational velocities for LC18 and find a slight improvement.

Item Type:Article
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URLURL TypeDescription Paper
Nuñez, Evan H.0000-0001-5595-757X
Kirby, Evan N.0000-0001-6196-5162
Steidel, Charles C.0000-0002-4834-7260
Alternate Title:Empirical Constraints on Core Collapse Supernova Yields using Very Metal Poor Damped Lyman Alpha Absorbers
Additional Information:© 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 2021 August 1; revised 2021 November 29; accepted 2021 December 7; published 2022 March 4. We thank Tuguldur Sukhbold for in-depth comments and correspondence that significantly improved this work. We thank Ryan Cooke, Louise Welsh, Donatella Romano, Carl Fields, Lynne Hillenbrand, and Sanjana Curtis for thoughtful conversations and for sharing information and data that improved the quality of this work. We thank our referee for helpful comments that improved this paper. E.H.N. acknowledges the support of the NSF Graduate Research Fellowship Program. This material is based upon work supported by the National Science Foundation under grant No. AST-1847909. E.N.K. gratefully acknowledges support from a Cottrell Scholar award administered by the Research Corporation for Science Advancement. Software: Astropy (Astropy Collaboration et al. 2013, 2018).
Funding AgencyGrant Number
NSF Graduate Research FellowshipUNSPECIFIED
Cottrell Scholar of Research CorporationUNSPECIFIED
Subject Keywords:Core-collapse supernovae; Damped Lyman-alpha systems; Quasar absorption line spectroscopy; Population III stars; Nucleosynthesis
Issue or Number:1
Record Number:CaltechAUTHORS:20220307-189105000
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Official Citation:Evan H. Nuñez et al 2022 ApJ 927 64
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:113773
Deposited By: George Porter
Deposited On:08 Mar 2022 23:43
Last Modified:08 Mar 2022 23:43

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