2025ApJ...990..207L


Query : 2025ApJ...990..207L

2025ApJ...990..207L - Astrophys. J., 990, 207 (2025/September-2)

Revisiting the Perseus Cluster. I. Resolving the Si/S/Ar/Ca Ratios by Stellar Convection.

LEUNG S.-C., NOMOTO K. and SIMIONESCU A.

Abstract (from CDS):

Chemical abundance measurements from stars in the Milky Way to the intragalactic medium in the Perseus Cluster have challenged the spherical explosion models. Models in the literature cannot closely match the observed element ratios, where Si, S are overproduced and Ar, Ca are underproduced. In this article, we explore the impact of the model parameters during the evolution of massive stars on the final explosive nucleosynthesis. We investigate the effects of a parameterized model of the convective process, including the mixing length parameter and the semiconvection parameter, on the production of Si-group elements. We search for the value pair that can reduce the discrepancy in the models. We conclude that a mixing length parameter of 2.2 and a semiconvection parameter of 0.03 are required to fit these criteria. Using this updated value pair, we compute a sequence of massive star models from MZAMS = 15-40 M⊙. The high-resolution data from future observations, such as XRISM, will provide further details on less constrained processes in stellar evolution and supernova explosions. Future comparison with supernova models of various progenitor metallicity will further shed light on the supernova population and their relative rates on cosmological scales.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Supernovae - Galaxy clusters - Perseus Cluster - Hydrodynamical simulations - Explosive nucleosynthesis - Chemical abundances

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
3 SN 1987A SN* 05 35 27.98840 -69 16 11.1134           SNIIpec 5203 2
4 * alf Ori s*r 05 55 10.30536 +07 24 25.4304 4.38 2.27 0.42 -1.17 -2.45 M1-M2Ia-Iab 1789 0
5 2MASS J10105195+2358503 Pe* 10 10 51.9538332706 +23 58 50.481563127     16.01     F0V 16 0
6 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
7 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
8 HE 1424-0241 Pe* 14 26 40.3306297920 -02 54 27.487168164   15.892 15.45 14.887 14.54 ~ 40 0
9 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1

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