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Anand, S, Barnes, J, Yang, S, Kasliwal, MM, Coughlin, MW, Sollerman, J, De, K, Fremling, C, Corsi, A, Ho, AYQ, Balasubramanian, A, Omand, C, Srinivasaragavan, GP, Cenko, SB, Ahumada, T, Andreoni, I, Dahiwale, A, Das, KK, Jencson, J, Karambelkar, V , Kumar, H, Metzger, BD, Perley, D, Sarin, N, Schweyer, T, Schulze, S, Sharma, Y, Sit, T, Stein, R, Tartaglia, L, Tinyanont, S, Tzanidakis, A, van Roestel, J, Yao, Y, Bloom, JS, Cook, DO, Dekany, R, Graham, MJ, Groom, SL, Kaplan, DL, Masci, FJ, Medford, MS, Riddle, R and Zhang, C (2024) Collapsars as Sites of r-process Nucleosynthesis: Systematic Photometric Near-infrared Follow-up of Type Ic-BL Supernovae. The Astrophysical Journal, 962 (1). p. 68. ISSN 1538-4357
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Collapsars as Sites of rprocess Nucleosynthesis Systematic Photometric Nearinfrared Followup of Type IcBL Supernovae.pdf - Published Version Available under License Creative Commons Attribution. Download (5MB) | Preview |
Abstract
One of the open questions following the discovery of GW170817 is whether neutron star (NS) mergers are the only astrophysical sites capable of producing r-process elements. Simulations have shown that 0.01–0.1 M⊙ of r-process material could be generated in the outflows originating from the accretion disk surrounding the rapidly rotating black hole that forms as a remnant to both NS mergers and collapsing massive stars associated with long-duration gamma-ray bursts (collapsars). The hallmark signature of r-process nucleosynthesis in the binary NS merger GW170817 was its long-lasting near-infrared (NIR) emission, thus motivating a systematic photometric study of the light curves of broad-lined stripped-envelope (Ic-BL) supernovae (SNe) associated with collapsars. We present the first systematic study of 25 SNe Ic-BL—including 18 observed with the Zwicky Transient Facility and 7 from the literature—in the optical/NIR bands to determine what quantity of r-process material, if any, is synthesized in these explosions. Using semi-analytic models designed to account for r-process production in SNe Ic-BL, we perform light curve fitting to derive constraints on the r-process mass for these SNe. We also perform independent light curve fits to models without the r-process. We find that the r-process-free models are a better fit to the light curves of the objects in our sample. Thus, we find no compelling evidence of r-process enrichment in any of our objects. Further high-cadence infrared photometric studies and nebular spectroscopic analysis would be sensitive to smaller quantities of r-process ejecta mass or indicate whether all collapsars are completely devoid of r-process nucleosynthesis.
| Item Type: | Article |
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| Uncontrolled Keywords: | 0201 Astronomical and Space Sciences; 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics; 0306 Physical Chemistry (incl. Structural); Astronomy & Astrophysics |
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Divisions: | Astrophysics Research Institute |
| Publisher: | American Astronomical Society |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 16 Feb 2024 15:15 |
| Last Modified: | 16 Feb 2024 15:15 |
| DOI or ID number: | 10.3847/1538-4357/ad11df |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/22640 |
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