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Título: | Optical studies of two stripped-envelope supernovae-SN 2015ap (Type Ib) and SN 2016P (Type Ic) |
Autor: | Gangopadhyay, Anjansha; Misra, Kuntal; Sahu, D. K.; Wang, Shan-Qin; Kumar, Brajesh; Li, Long; Anupama, G. C.; Dastidar, Raya; Elias-Rosa, Nancy CSIC ORCID; Singh, Mridweeka; Pandey, Shashi Bhushan; Sanwal, Pankaj; Singh, Avinash; Srivastav, Shubham; Tartaglia, Leonardo; Tomasella, L. | Palabras clave: | Galaxies: Individual: IC 1776, NGC 5374 Supernovae: general Supernovae: Individual: SNe 2015ap, 2016P Techniques: photometric Techniques: spectroscopic Transients: supernovae |
Fecha de publicación: | 7-jul-2020 | Editor: | Royal Astronomical Society | Citación: | Monthly Notices of the Royal Astronomical Society 497(3): 3770-3789 (2020) | Resumen: | We present the photometric and spectroscopic studies of a Type Ib SN 2015ap and a Type Ic SN 2016P. SN 2015ap is one of the bright (MV =-18.04 mag) Type Ib while SN 2016P lies at an average value among the Type Ic SNe (MV =-17.53 mag). Bolometric light-curve modelling of SNe 2015ap and 2016P indicates that both the SNe are powered by 56Ni + magnetar model with 56Ni masses of 0.01 and 0.002 M⊙, ejecta masses of 3.75 and 4.66 M⊙, spin period P0 of 25.8 and 36.5 ms, and magnetic field Bp of 28.39 × 1014 and 35.3 × 1014 G, respectively. The early spectra of SN 2015ap show prominent lines of He with a 'W' feature due to Fe complexes while other lines of Mg ii, Na i, and Si ii are present in both SNe 2015ap and 2016P. Nebular phase [O i] profile indicates an asymmetric profile in SN 2015ap. The [O i]/[Ca ii] ratio and nebular spectral modelling of SN 2015ap hint towards a progenitor mass between 12 and 20 M⊙. | Versión del editor: | http://doi.org/10.1093/mnras/staa1821 | URI: | http://hdl.handle.net/10261/237131 | DOI: | 10.1093/mnras/staa1821 | Identificadores: | doi: 10.1093/mnras/staa1821 issn: 1365-2966 |
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Optical_studies_of_two_stripped_envelope_supernovae.pdf | 8,23 MB | Adobe PDF | Visualizar/Abrir |
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