The double-peaked Type Ic supernova 2019cad: another SN 2005bf-like object

Mostrar todas las versiones(3)

We present the photometric and spectroscopic evolution of supernova (SN) 2019cad during the first ∼100 d from explosion. Based on the light-curve morphology, we find that SN 2019cad resembles the double-peaked Type Ib/c SN 2005bf and the Type Ic PTF11mnb. Unlike those two objects, SN 2019cad also sh...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Bersten, Melina Cecilia, Ertini, Keila Yael, Folatelli, Gastón
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2021
Materias:
Ciencias Astronómicas
Supernovae: general
Supernovae: individual: SN 2019cad
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125482
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125482
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Supernovae: general
Supernovae: individual: SN 2019cad
spellingShingle Ciencias Astronómicas
Supernovae: general
Supernovae: individual: SN 2019cad
Bersten, Melina Cecilia
Ertini, Keila Yael
Folatelli, Gastón
The double-peaked Type Ic supernova 2019cad: another SN 2005bf-like object
topic_facet Ciencias Astronómicas
Supernovae: general
Supernovae: individual: SN 2019cad
description We present the photometric and spectroscopic evolution of supernova (SN) 2019cad during the first ∼100 d from explosion. Based on the light-curve morphology, we find that SN 2019cad resembles the double-peaked Type Ib/c SN 2005bf and the Type Ic PTF11mnb. Unlike those two objects, SN 2019cad also shows the initial peak in the redder bands. Inspection of the g-band light curve indicates the initial peak is reached in ∼8 d, while the r-band peak occurred ∼15 d post-explosion. A second and more prominent peak is reached in all bands at ∼45 d past explosion, followed by a fast decline from ∼60 d. During the first 30 d, the spectra of SN 2019cad show the typical features of a Type Ic SN, however, after 40 d, a blue continuum with prominent lines of Si II λ6355 and C II λ6580 is observed again. Comparing the bolometric light curve to hydrodynamical models, we find that SN 2019cad is consistent with a pre-SN mass of 11 M⊙, and an explosion energy of 3.5 × 10⁵¹ erg. The light-curve morphology can be reproduced either by a double-peaked ⁵6⁶Ni distribution with an external component of 0.041 M⊙, and an internal component of 0.3 M⊙ or a double-peaked ⁵⁶Ni distribution plus magnetar model (P ∼ 11 ms and B ∼ 26 × 10¹⁴ G). If SN 2019cad were to suffer from significant host reddening (which cannot be ruled out), the ⁵⁶Ni model would require extreme values, while the magnetar model would still be feasible.
format Articulo
Preprint
author Bersten, Melina Cecilia
Ertini, Keila Yael
Folatelli, Gastón
author_facet Bersten, Melina Cecilia
Ertini, Keila Yael
Folatelli, Gastón
author_sort Bersten, Melina Cecilia
title The double-peaked Type Ic supernova 2019cad: another SN 2005bf-like object
title_short The double-peaked Type Ic supernova 2019cad: another SN 2005bf-like object
title_full The double-peaked Type Ic supernova 2019cad: another SN 2005bf-like object
title_fullStr The double-peaked Type Ic supernova 2019cad: another SN 2005bf-like object
title_full_unstemmed The double-peaked Type Ic supernova 2019cad: another SN 2005bf-like object
title_sort double-peaked type ic supernova 2019cad: another sn 2005bf-like object
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/125482
work_keys_str_mv AT berstenmelinacecilia thedoublepeakedtypeicsupernova2019cadanothersn2005bflikeobject
AT ertinikeilayael thedoublepeakedtypeicsupernova2019cadanothersn2005bflikeobject
AT folatelligaston thedoublepeakedtypeicsupernova2019cadanothersn2005bflikeobject
AT berstenmelinacecilia doublepeakedtypeicsupernova2019cadanothersn2005bflikeobject
AT ertinikeilayael doublepeakedtypeicsupernova2019cadanothersn2005bflikeobject
AT folatelligaston doublepeakedtypeicsupernova2019cadanothersn2005bflikeobject
bdutipo_str Repositorios
_version_ 1764820451744284675

Ejemplares similares