The final months of massive star evolution from the circumstellar environment around SN Ic 2020oi

We present the results of ALMA band 3 observations of a nearby type Ic supernova (SN) 2020oi. Under the standard assumptions on the SN-circumstellar medium (CSM) interaction and the synchrotron emission, the data indicate that the CSM structure deviates from a smooth distribution expected from the s...

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Autores principales: Maeda, Keiichi, Chandra, Poonam, Matsuoka, Tomoki, Ryder, Stuart D., Moriya, Takashi J., Kuncarayakti, Hanindyo, Lee, Shiu-Hang, Kundu, Esha, Patnaude, Daniel J., Saito, Tomoki, Folatelli, Gastón
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2021
Materias:
Astronomía
Ciencias Exactas
Supernovae
Circumstellar matter
Radio sources
Millimeter astronomy
Stellar evolution
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/142089
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-142089
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
Ciencias Exactas
Supernovae
Circumstellar matter
Radio sources
Millimeter astronomy
Stellar evolution
spellingShingle Astronomía
Ciencias Exactas
Supernovae
Circumstellar matter
Radio sources
Millimeter astronomy
Stellar evolution
Maeda, Keiichi
Chandra, Poonam
Matsuoka, Tomoki
Ryder, Stuart D.
Moriya, Takashi J.
Kuncarayakti, Hanindyo
Lee, Shiu-Hang
Kundu, Esha
Patnaude, Daniel J.
Saito, Tomoki
Folatelli, Gastón
The final months of massive star evolution from the circumstellar environment around SN Ic 2020oi
topic_facet Astronomía
Ciencias Exactas
Supernovae
Circumstellar matter
Radio sources
Millimeter astronomy
Stellar evolution
description We present the results of ALMA band 3 observations of a nearby type Ic supernova (SN) 2020oi. Under the standard assumptions on the SN-circumstellar medium (CSM) interaction and the synchrotron emission, the data indicate that the CSM structure deviates from a smooth distribution expected from the steady-state mass loss in the very vicinity of the SN (~10^{15} cm), which is then connected to the outer smooth distribution (~10^{16} cm). This structure is further confirmed through the light curve modeling of the whole radio data set as combined with data at lower frequency previously reported. Being an explosion of a bare carbon-oxygen (C+O) star having a fast wind, we can trace the mass-loss history of the progenitor of SN 2020oi in the final year. The inferred non-smooth CSM distribution corresponds to fluctuations on the sub-year time scale in the mass-loss history toward the SN explosion. Our finding suggests that the pre-SN activity is likely driven by the accelerated change in the nuclear burning stage in the last moments just before the massive star's demise. The structure of the CSM derived in this study is beyond the applicability of the other methods at optical wavelengths, highlighting an importance and uniqueness of quick follow-up observations of SNe by ALMA and other radio facilities.
format Articulo
Preprint
author Maeda, Keiichi
Chandra, Poonam
Matsuoka, Tomoki
Ryder, Stuart D.
Moriya, Takashi J.
Kuncarayakti, Hanindyo
Lee, Shiu-Hang
Kundu, Esha
Patnaude, Daniel J.
Saito, Tomoki
Folatelli, Gastón
author_facet Maeda, Keiichi
Chandra, Poonam
Matsuoka, Tomoki
Ryder, Stuart D.
Moriya, Takashi J.
Kuncarayakti, Hanindyo
Lee, Shiu-Hang
Kundu, Esha
Patnaude, Daniel J.
Saito, Tomoki
Folatelli, Gastón
author_sort Maeda, Keiichi
title The final months of massive star evolution from the circumstellar environment around SN Ic 2020oi
title_short The final months of massive star evolution from the circumstellar environment around SN Ic 2020oi
title_full The final months of massive star evolution from the circumstellar environment around SN Ic 2020oi
title_fullStr The final months of massive star evolution from the circumstellar environment around SN Ic 2020oi
title_full_unstemmed The final months of massive star evolution from the circumstellar environment around SN Ic 2020oi
title_sort final months of massive star evolution from the circumstellar environment around sn ic 2020oi
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/142089
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