SN 2020udy: an SN Iax with strict limits on interaction consistent with a helium-star companion-Reference-Cited by-同舟云学术

SN 2020udy: an SN Iax with strict limits on interaction consistent with a helium-star companion

Published:2023-07-29 Issue:1 Volume:525 Page:1210-1228
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Maguire Kate¹^ORCID,Magee Mark R²^ORCID,Leloudas Giorgos³,Miller Adam A⁴⁵^ORCID,Dimitriadis Georgios¹^ORCID,Pursiainen Miika³^ORCID,Bulla Mattia⁶⁷⁸^ORCID,De Kishalay⁹,Gal-Yam Avishay¹⁰,Perley Daniel A¹¹^ORCID,Fremling Christoffer¹²¹³,Karambelkar Viraj R¹³,Nordin Jakob¹⁴,Reusch Simeon¹⁴¹⁵,Schulze Steve¹⁶^ORCID,Sollerman Jesper¹⁷^ORCID,Terreran Giacomo¹⁸^ORCID,Yang(杨轶) Yi¹⁹^ORCID,Bellm Eric C²⁰,Groom Steven L²¹,Kasliwal Mansi M¹³^ORCID,Kulkarni Shrinivas R¹³,Lacroix Leander¹⁶²²,Masci Frank J²¹,Purdum Josiah N¹²,Sharma Yashvi¹³,Smith Roger¹²

Affiliation:

1. School of Physics, Trinity College Dublin, The University of Dublin , Dublin 2 , Ireland

2. Department of Physics, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL , UK

3. DTU Space, National Space Institute, Technical University of Denmark , Elektrovej 327, DK-2800 Kgs. Lyngby , Denmark

4. Department of Physics and Astronomy, Northwestern University , 2145 Sheridan Rd, Evanston, IL 60208 , USA

5. Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Northwestern University , 1800 Sherman Ave, Evanston, IL 60201 , USA

6. Department of Physics and Earth Science, University of Ferrara , via Saragat 1, I-44122 Ferrara , Italy

7. INFN , Sezione di Ferrara, via Saragat 1, I-44122 Ferrara , Italy

8. INAF , Osservatorio Astronomico d’Abruzzo, via Mentore Maggini snc, I-64100 Teramo , Italy

9. MIT-Kavli Institute for Astrophysics and Space Research , 77 Massachusetts Ave., Cambridge, MA 02139 , USA

10. Department of Particle Physics and Astrophysics, Weizmann Institute of Science , 234 Herzl St, Rehovot 7610001 , Israel

11. Astrophysics Research Institute, Liverpool John Moores University , 146 Brownlow Hill, Liverpool L3 5RF , UK

12. Caltech Optical Observatories, California Institute of Technology , Pasadena, CA 91125 , USA

13. Division of Physics, Mathematics and Astronomy, California Institute of Technology , Pasadena, CA 91125 , USA

14. Institut für Physik, Humboldt-Universität zu Berlin , D-12489 Berlin , Germany

15. Deutsches Elektronen Synchrotron DESY , Platanenallee 6, D-15738 Zeuthen , Germany

16. The Oskar Klein Centre, Department of Physics, Stockholm University, Albanova University Center , SE-106 91 Stockholm , Sweden

17. The Oskar Klein Centre, Department of Astronomy, Stockholm University , AlbaNova University Center, SE-106 91 Stockholm , Sweden

18. Las Cumbres Observatory , 6740 Cortona Drive, Suite 102, Goleta, CA 93117-5575 , USA

19. Department of Astronomy, University of California , Berkeley, CA 94720-3411 , USA

20. DIRAC Institute, Department of Astronomy, University of Washington , 3910 15th Avenue NE, Seattle, WA 98195 , USA

21. IPAC, California Institute of Technology , 1200 E. California Blvd, Pasadena, CA 91125 , USA

22. LPNHE , CNRS/IN2P3, Sorbonne Université, Université Paris-Cité, Laboratoire de Physique Nucléaire et de Hautes Énergies, F-75005 Paris , France

Abstract

ABSTRACT Early observations of transient explosions can provide vital clues to their progenitor origins. In this paper, we present the nearby Type Iax (02cx-like) supernova (SN), SN 2020udy, that was discovered within hours (∼7 h) of estimated first light. An extensive data set of ultra-violet, optical, and near-infrared observations was obtained, covering out to ∼150 d after explosion. SN 2020udy peaked at −17.86 ± 0.43 mag in the r band and evolved similarly to other ‘luminous’ SNe Iax, such as SNe 2005hk and 2012Z. Its well-sampled early light curve allows strict limits on companion interaction to be placed. Main-sequence companion stars with masses of 2 and 6 M⊙ are ruled out at all viewing angles, while a helium-star companion is allowed from a narrow range of angles (140–180° away from the companion). The spectra and light curves of SN 2020udy are in good agreement with those of the ‘N5def’ deflagration model of a near Chandrasekhar-mass carbon–oxygen white dwarf. However, as has been seen in previous studies of similar luminosity events, SN 2020udy evolves slower than the model. Broad-band linear polarization measurements taken at and after peak are consistent with no polarization, in agreement with the predictions of the companion-star configuration from the early light-curve measurements. The host galaxy environment is low metallicity and is consistent with a young stellar population. Overall, we find the most plausible explosion scenario to be the incomplete disruption of a CO white dwarf near the Chandrasekhar-mass limit, with a helium-star companion.

Funder

H2020

Villum Fonden

NASA

ERC

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Link

https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stad2316/51005844/stad2316.pdf

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