Optical studies of a bright Type Iax supernova SN 2020rea-Reference-Cited by-同舟云学术

Optical studies of a bright Type Iax supernova SN 2020rea

Published:2022-10-26 Issue:4 Volume:517 Page:5617-5626
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Singh Mridweeka¹,Misra Kuntal²^ORCID,Sahu Devendra K¹,Ailawadhi Bhavya²³,Dutta Anirban¹⁴,Howell D Andrew⁵⁶,Anupama G C¹^ORCID,Bostroem K Azalee⁷,Burke Jamison⁵⁶,Dastidar Raya⁸⁹^ORCID,Gangopadhyay Anjasha¹⁰,Hiramatsu Daichi⁵⁶¹¹¹²,Im Hyobin¹³¹⁴^ORCID,McCully Curtis⁵⁶,Pellegrino Craig⁵⁶,Srivastav Shubham¹⁵^ORCID,Teja Rishabh Singh¹⁴^ORCID

Affiliation:

1. Indian Institute of Astrophysics , II Block, Koramangala, Bengaluru 560 034, India

2. Aryabhatta Research Institute of Observational Sciences , Manora Peak, Nainital 263 001, India

3. Deen Dayal Upadhyaya Gorakhpur University , Gorakhpur 273009, India

4. Pondicherry University , R.V. Nagar, Kalapet, Puducherry 605014, India

5. Las Cumbres Observatory , 6740 Cortona Drive, Suite 102, Goleta, CA 93117, USA

6. Department of Physics, University of California , Santa Barbara, CA 93106, USA

7. DiRAC Institute, Department of Astronomy, University of Washington , Box 351580, U.W., Seattle, WA 98195, USA

8. Millennium Institute of Astrophysics (MAS) , Nuncio Monsenor Sòtero Sanz 100, Providencia, Santiago, Chile

9. Departamento de Ciencias Fisicas, Universidad Andres Bello , Fernandez Concha 700, Las Condes, Santiago, Chile

10. Hiroshima Astrophysical Science Center, Hiroshima University , Higashi-Hiroshima, Japan

11. Center for Astrophysics | Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA

12. The NSF AI Institute for Artificial Intelligence and Fundamental Interactions , Cambridge, MA 02139-4307, USA

13. Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea

14. Korea University of Science and Technology (UST) , 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea

15. Astrophysics Research Centre, School of Mathematics and Physics , Queen’s University Belfast, Belfast BT7 1NN, UK

Abstract

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.

Funder

National Science Foundation

NASA

Jet Propulsion Laboratory

California Institute of Technology

National Aeronautics and Space Administration

FONDECYT

NSF

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics