Finding the first cosmic explosions. IV. 90-140 M[symbol sun] pair-instability supernovae

• Verfasst von: Smidt, Joseph [VerfasserIn]
• Verfasst von: Whalen, Daniel J. [VerfasserIn]
• Verfasst von: Chatzopoulos, E. [VerfasserIn]
• Verfasst von: Wiggins, Brandon [VerfasserIn]
• Verfasst von: Chen, Ke-Jung [VerfasserIn]
• Verfasst von: Kozyreva, Alexandra [VerfasserIn]
• Verfasst von: Even, Wesley [VerfasserIn]
• Titel: Finding the first cosmic explosions. IV. 90-140 M[symbol sun] pair-instability supernovae
• Verf.angabe: Joseph Smidt, Daniel J. Whalen, E. Chatzopoulos, Brandon Wiggins, Ke-Jung Chen, Alexandra Kozyreva, and Wesley Even
• E-Jahr: 2015
• Jahr: 2015 May 19
• Umfang: 11 S.
• Fussnoten: Im Titel ist M[symbol sun] als Abkürzung für die astronomische Maßeinheit Sonnenmasse dargestellt ; Gesehen am 18.06.2020
• Titel Quelle: Enthalten in: The astrophysical journal / 1
• Ort Quelle: London : Institute of Physics Publ., 1996
• Jahr Quelle: 2015
• Band/Heft Quelle: 805(2015,1) Artikel-Nummer 44, 11 Seiten
• ISSN Quelle: 1538-4357
• DOI: doi:10.1088/0004-637X/805/1/44
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1701062143

Abstract

Population III stars that die as pair-instability supernovae are usually thought to fall in the mass range of 140-260 . But several lines of work have now shown that rotation can build up the He cores needed to encounter the pair instability at stellar masses as low as 90 . Depending on the slope of the initial mass function of Population III stars, there could be 4-5 times as many stars from 90-140 in the primordial universe as in the usually accepted range. We present numerical simulations of the pair-instability explosions of such stars performed with the MESA, FLASH, and RAGE codes. We find that they will be visible to supernova factories such as Pan-STARRS and LSST in the optical out to 1-2 and to James Webb Space Telescope and the 30 m class telescopes in the near-infrared (NIR) out to 7-10. Such explosions will thus probe the stellar populations of the first galaxies and cosmic star formation rates in the era of cosmological reionization. These supernovae are also easily distinguished from more massive pair-instability explosions, underscoring the fact that there is far greater variety to the light curves of these events than previously understood.