Optical studies of a bright Type Iax supernova SN 2020rea

Mridweeka Singh; Kuntal Misra; Devendra K Sahu; Bhavya Ailawadhi; Anirban Dutta; D Andrew Howell; G C Anupama; K Azalee Bostroem; Jamison Burke; Raya Dastidar; Anjasha Gangopadhyay; Daichi Hiramatsu; Hyobin Im; Curtis McCully; Craig Pellegrino; Shubham Srivastav; Rishabh Singh Teja

doi:10.1093/mnras/stac3059

Optical studies of a bright Type Iax supernova SN 2020rea

Mridweeka Singh, Kuntal Misra, Devendra K Sahu, Bhavya Ailawadhi, Anirban Dutta, D Andrew Howell, G C Anupama, K Azalee Bostroem, Jamison Burke, Raya Dastidar, Anjasha Gangopadhyay, Daichi Hiramatsu, Hyobin Im, Curtis McCully, Craig Pellegrino, Shubham Srivastav, Rishabh Singh Teja

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Abstract

We present optical photometric and spectroscopic analysis of a Type Iax supernova (SN) 2020rea situated at the brighter luminosity end of Type Iax supernovae (SNe). The light curve decline rate of SN 2020rea is Δm15(g) = 1.31±0.08 mag which is similar to SNe 2012Z and 2005hk. Modelling the pseudo bolometric light curve with a radiation diffusion model yields a mass of 56Ni of 0.13±0.01 M⊙ and an ejecta mass of 0.77$^{+0.11}_{-0.21}$ M⊙. Spectral features of SN 2020rea during the photospheric phase show good resemblance with SN 2012Z. TARDIS modelling of the early spectra of SN 2020rea reveals a dominance of Iron Group Elements (IGEs). The photospheric velocity of the Si ii line around maximum for SN 2020rea is ∼ 6500 km s−1 which is less than the measured velocity of the Fe ii line and indicates significant mixing. The observed physical properties of SN 2020rea match with the predictions of pure deflagration model of a Chandrasekhar mass C-O white dwarf. The metallicity of the host galaxy around the SN region is 12+log(O/H) = 8.56±0.18 dex which is similar to that of SN 2012Z.

Original language	English
Pages (from-to)	5617–5626
Journal	Monthly Notices of the Royal Astronomical Society
Volume	517
Issue number	4
Early online date	26 Oct 2022
DOIs	https://doi.org/10.1093/mnras/stac3059
Publication status	Published - Dec 2022

Keywords

Space and Planetary Science
Astronomy and Astrophysics

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Optical studies of a bright Type Iax supernova SN 2020rea
Copyright 2022, the Authors This work is made available online in accordance with the publisher’s policies. Please refer to any applicable terms of use of the publisher.
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Singh, M., Misra, K., Sahu, D. K., Ailawadhi, B., Dutta, A., Howell, D. A., Anupama, G. C., Bostroem, K. A., Burke, J., Dastidar, R., Gangopadhyay, A., Hiramatsu, D., Im, H., McCully, C., Pellegrino, C., Srivastav, S., & Teja, R. S. (2022). Optical studies of a bright Type Iax supernova SN 2020rea. Monthly Notices of the Royal Astronomical Society, 517(4), 5617–5626. https://doi.org/10.1093/mnras/stac3059

@article{6fa97c48e8e940398b9daf4ad27419d3,

title = "Optical studies of a bright Type Iax supernova SN 2020rea",

abstract = "We present optical photometric and spectroscopic analysis of a Type Iax supernova (SN) 2020rea situated at the brighter luminosity end of Type Iax supernovae (SNe). The light curve decline rate of SN 2020rea is Δm15(g) = 1.31±0.08 mag which is similar to SNe 2012Z and 2005hk. Modelling the pseudo bolometric light curve with a radiation diffusion model yields a mass of 56Ni of 0.13±0.01 M⊙ and an ejecta mass of 0.77$^{+0.11}_{-0.21}$ M⊙. Spectral features of SN 2020rea during the photospheric phase show good resemblance with SN 2012Z. TARDIS modelling of the early spectra of SN 2020rea reveals a dominance of Iron Group Elements (IGEs). The photospheric velocity of the Si ii line around maximum for SN 2020rea is ∼ 6500 km s−1 which is less than the measured velocity of the Fe ii line and indicates significant mixing. The observed physical properties of SN 2020rea match with the predictions of pure deflagration model of a Chandrasekhar mass C-O white dwarf. The metallicity of the host galaxy around the SN region is 12+log(O/H) = 8.56±0.18 dex which is similar to that of SN 2012Z.",

keywords = "Space and Planetary Science, Astronomy and Astrophysics",

author = "Mridweeka Singh and Kuntal Misra and Sahu, {Devendra K} and Bhavya Ailawadhi and Anirban Dutta and Howell, {D Andrew} and Anupama, {G C} and Bostroem, {K Azalee} and Jamison Burke and Raya Dastidar and Anjasha Gangopadhyay and Daichi Hiramatsu and Hyobin Im and Curtis McCully and Craig Pellegrino and Shubham Srivastav and Teja, {Rishabh Singh}",

year = "2022",

month = dec,

doi = "10.1093/mnras/stac3059",

language = "English",

volume = "517",

pages = "5617–5626",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

Singh, M, Misra, K, Sahu, DK, Ailawadhi, B, Dutta, A, Howell, DA, Anupama, GC, Bostroem, KA, Burke, J, Dastidar, R, Gangopadhyay, A, Hiramatsu, D, Im, H, McCully, C, Pellegrino, C, Srivastav, S & Teja, RS 2022, 'Optical studies of a bright Type Iax supernova SN 2020rea', Monthly Notices of the Royal Astronomical Society, vol. 517, no. 4, pp. 5617–5626. https://doi.org/10.1093/mnras/stac3059

TY - JOUR

T1 - Optical studies of a bright Type Iax supernova SN 2020rea

AU - Singh, Mridweeka

AU - Misra, Kuntal

AU - Sahu, Devendra K

AU - Ailawadhi, Bhavya

AU - Dutta, Anirban

AU - Howell, D Andrew

AU - Anupama, G C

AU - Bostroem, K Azalee

AU - Burke, Jamison

AU - Dastidar, Raya

AU - Gangopadhyay, Anjasha

AU - Hiramatsu, Daichi

AU - Im, Hyobin

AU - McCully, Curtis

AU - Pellegrino, Craig

AU - Srivastav, Shubham

AU - Teja, Rishabh Singh

PY - 2022/12

Y1 - 2022/12

N2 - We present optical photometric and spectroscopic analysis of a Type Iax supernova (SN) 2020rea situated at the brighter luminosity end of Type Iax supernovae (SNe). The light curve decline rate of SN 2020rea is Δm15(g) = 1.31±0.08 mag which is similar to SNe 2012Z and 2005hk. Modelling the pseudo bolometric light curve with a radiation diffusion model yields a mass of 56Ni of 0.13±0.01 M⊙ and an ejecta mass of 0.77$^{+0.11}_{-0.21}$ M⊙. Spectral features of SN 2020rea during the photospheric phase show good resemblance with SN 2012Z. TARDIS modelling of the early spectra of SN 2020rea reveals a dominance of Iron Group Elements (IGEs). The photospheric velocity of the Si ii line around maximum for SN 2020rea is ∼ 6500 km s−1 which is less than the measured velocity of the Fe ii line and indicates significant mixing. The observed physical properties of SN 2020rea match with the predictions of pure deflagration model of a Chandrasekhar mass C-O white dwarf. The metallicity of the host galaxy around the SN region is 12+log(O/H) = 8.56±0.18 dex which is similar to that of SN 2012Z.

AB - We present optical photometric and spectroscopic analysis of a Type Iax supernova (SN) 2020rea situated at the brighter luminosity end of Type Iax supernovae (SNe). The light curve decline rate of SN 2020rea is Δm15(g) = 1.31±0.08 mag which is similar to SNe 2012Z and 2005hk. Modelling the pseudo bolometric light curve with a radiation diffusion model yields a mass of 56Ni of 0.13±0.01 M⊙ and an ejecta mass of 0.77$^{+0.11}_{-0.21}$ M⊙. Spectral features of SN 2020rea during the photospheric phase show good resemblance with SN 2012Z. TARDIS modelling of the early spectra of SN 2020rea reveals a dominance of Iron Group Elements (IGEs). The photospheric velocity of the Si ii line around maximum for SN 2020rea is ∼ 6500 km s−1 which is less than the measured velocity of the Fe ii line and indicates significant mixing. The observed physical properties of SN 2020rea match with the predictions of pure deflagration model of a Chandrasekhar mass C-O white dwarf. The metallicity of the host galaxy around the SN region is 12+log(O/H) = 8.56±0.18 dex which is similar to that of SN 2012Z.

KW - Space and Planetary Science

KW - Astronomy and Astrophysics

U2 - 10.1093/mnras/stac3059

DO - 10.1093/mnras/stac3059

M3 - Article

SN - 0035-8711

VL - 517

SP - 5617

EP - 5626

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

Optical studies of a bright Type Iax supernova SN 2020rea

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