SN 2020kyg and the rates of faint Iax supernovae from ATLAS

Vista sencilla de ítem
dc.contributor.authorSrivastav, Shubham
dc.contributor.authorSmartt, S.J.
dc.contributor.authorHuber, M.E.
dc.contributor.authorChambers, K.C.
dc.contributor.authorAngus, C.R.
dc.contributor.authorChen, T.-W.
dc.contributor.authorCallan, F.P.
dc.contributor.authorGillanders, J.H.
dc.contributor.authorMcBrien, O.R.
dc.contributor.authorSim, S.A.
dc.contributor.authorFulton, M.
dc.contributor.authorHjorth, J.
dc.contributor.authorSmith, K.W.
dc.contributor.authorYoung, D.R.
dc.contributor.authorAuchettl, K.
dc.contributor.authorAnderson, J.P.
dc.contributor.authorPignata, G.
dc.contributor.authorDe Boer, T.J.L.
dc.contributor.authorLin, C.-C.
dc.contributor.authorMagnier, E.A.
dc.date.accessioned2024-07-12T16:58:37Z
dc.date.available2024-07-12T16:58:37Z
dc.date.issued2022-04-01
dc.descriptionIndexación: Scopus.
dc.description.abstractWe present multiwavelength follow-up observations of the ATLAS discovered faint Iax supernova SN 2020kyg that peaked at an absolute magnitude of Mg ≈-14.9 ± 0.2, making it another member of the faint Iax supernova population. The bolometric light curve requires only ≈7 × 10-3 M· of radioactive 56Ni, with an ejected mass of Mej ∼0.4 M· and a low kinetic energy of E ≈ 0.05 ± 0.02 × 1051 erg. We construct a homogeneous volume-limited sample of 902 transients observed by ATLAS within 100 Mpc during a 3.5 yr span. Using this sample, we constrain the rates of faint Iax (Mr ≳-16) events within 60 Mpc at 12+14-8 per cent of the SN Ia rate. The overall Iax rate, at 15+17-9 per cent of the Ia rate, is dominated by the low-luminosity events, with luminous SNe Iax (Mr ≲-17.5) like 2002cx and 2005hk, accounting for only 0.9+1.1-0.5 per cent of the Ia rate (a 2σ upper limit of approximately 3 per cent). We favour the hybrid CONe WD + He star progenitor channel involving a failed deflagration of a near Chandrasekhar mass white dwarf, expected to leave a bound remnant and a surviving secondary companion, as a candidate explanation for faint Iax explosions. This scenario requires short delay times, consistent with the observed environments of SNe Iax. Furthermore, binary population synthesis calculations have suggested rates of 1-18 per cent of the SN Ia rate for this channel, consistent with our rate estimates. © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
dc.description.urihttps://academic-oup-com.recursosbiblioteca.unab.cl/mnras/article/511/2/2708/6516970#333669757
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, Volume 511, Issue 2, Pages 2708 - 2731, 1 April 2022
dc.identifier.doi10.1093/mnras/stac177
dc.identifier.issn0035-8711
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/58432
dc.language.isoen
dc.publisherOxford University Press
dc.rights.licenseATTRIBUTION 4.0 INTERNATIONAL CC BY 4.0 Deed
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectSupernovae: general
dc.subjectSupernovae: individual: SN 2020kyg
dc.subjectCombustion
dc.subjectKinetic energy
dc.subjectKinetics
dc.subjectWhite dwarfs
dc.titleSN 2020kyg and the rates of faint Iax supernovae from ATLAS
dc.typeArtículo
Archivos
Bloque original
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
Shubham_SN_2020kyg_and_the_rates.pdf
Tamaño:
4.27 MB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO COMPLETO EN INGLÉS
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista