SN 2022ann: a Type Icn supernova from a dwarf galaxy that reveals helium in its circumstellar environment-Reference-Cited by-同舟云学术

SN 2022ann: a Type Icn supernova from a dwarf galaxy that reveals helium in its circumstellar environment

Published:2023-05-15 Issue:2 Volume:523 Page:2530-2550
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Davis K W¹^ORCID,Taggart K¹^ORCID,Tinyanont S¹²^ORCID,Foley R J¹^ORCID,Villar V A³^ORCID,Izzo L⁴^ORCID,Angus C R⁴^ORCID,Bustamante-Rosell M J¹^ORCID,Coulter D A¹^ORCID,Earl N⁵^ORCID,Farias D⁴^ORCID,Hjorth J⁴^ORCID,Huber M E⁶^ORCID,Jones D O¹⁷^ORCID,Kelly P L⁸^ORCID,Kilpatrick C D⁹^ORCID,Langeroodi D⁴^ORCID,Miao H-Y¹⁰^ORCID,Pellegrino C M¹¹¹²^ORCID,Ramirez-Ruiz E¹^ORCID,Ransome C L³^ORCID,Rest S¹³^ORCID,Siebert M R¹⁴^ORCID,Terreran G¹¹^ORCID,Thornton I M³^ORCID,Yadavalli S K³^ORCID,Zeimann G R¹⁵^ORCID,Auchettl K¹¹⁶¹⁷^ORCID,Bom C R¹⁸^ORCID,Brink T G¹⁹^ORCID,Burke J¹¹¹²^ORCID,Camacho-Neves Y²⁰^ORCID,Chambers K C⁶^ORCID,de Boer T J L⁶^ORCID,DeMarchi L⁹^ORCID,Filippenko A V¹⁹^ORCID,Galbany L²¹²²^ORCID,Gall C⁴^ORCID,Gao H⁶^ORCID,Herpich F R²³^ORCID,Howell D A¹¹¹²^ORCID,Jacobson-Galan W V¹⁹^ORCID,Jha S W²⁰^ORCID,Kanaan A¹⁰,Khetan N⁴^ORCID,Kwok L A²⁰^ORCID,Lai Z¹^ORCID,Larison C²⁰^ORCID,Lin C-C⁶^ORCID,Loertscher K C¹^ORCID,Magnier E A⁶^ORCID,McCully C¹¹,McGill P¹^ORCID,Newsome M¹¹¹²^ORCID,Padilla Gonzalez E¹¹¹²^ORCID,Pan Y-C¹⁰^ORCID,Rest A¹⁴¹³^ORCID,Rho J²⁴^ORCID,Ribeiro T²⁵,Santos A¹⁸^ORCID,Schoenell W²⁶,Sharief S N⁵^ORCID,Smith K W²⁷^ORCID,Wainscoat R J⁶^ORCID,Wang Q¹³^ORCID,Zenati Y¹³^ORCID,Zheng W¹⁹^ORCID

Affiliation:

1. Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95064, USA

2. National Astronomical Research Institute of Thailand , 260 Moo 4, Donkaew, Maerim, Chiang Mai 50180, Thailand

3. Department of Astronomy and Astrophysics, The Pennsylvania State University , University Park, PA 16802, USA

4. DARK, Niels Bohr Institute, University of Copenhagen , Jagtvej 128, 2200 Copenhagen, Denmark

5. Department of Astronomy, University of Illinois at Urbana-Champaign , 1002 W. Green St, IL 61801 , USA

6. Institute for Astronomy, University of Hawaii , 2680 Woodlawn Drive , Honolulu, HI 96822, USA

7. Gemini Observatory/NSF’s NOIRLab , 670 N. A’ohoku Place , Hilo, HI 96720, USA

8. Minnesota Institute for Astrophysics, University of Minnesota , 116 Church Street SE , Minneapolis, MN 55455, USA

9. Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University , Evanston, IL 60208, USA

10. Graduate Institute of Astronomy, National Central University , 300 Zhongda Road , Zhongli, Taoyuan 32001, Taiwan

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

12. Department of Physics, University of California , Santa Barbara, CA 93106-9530, USA

13. Department of Physics and Astronomy, The Johns Hopkins University , Baltimore, MD 21218, USA

14. Space Telescope Science Institute , Baltimore, MD 21218, USA

15. Hobby Eberly Telescope, University of Texas , Austin, TX 78712, USA

16. School of Physics, The University of Melbourne , VIC 3010, Australia

17. ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) , Australia

18. Centro Brasileiro de Pesquisas Físicas , Rua Dr Xavier Sigaud 150, CEP 22290-180 , Rio de Janeiro, RJ, Brazil

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

20. Department of Physics and Astronomy, Rutgers, the State University of New Jersey , 136 Frelinghuysen Road , Piscataway, NJ 08854-8019, USA

21. Institute of Space Sciences (ICE, CSIC) , Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, Spain

22. Institut d’Estudis Espacials de Catalunya (IEEC) , E-08034 Barcelona, Spain

23. Department of Astronomy, University of Sao Paulo , Rua do Matao, 1226, 05509-900 Sao Paulo, Brazil

24. SETI Institute , 339 N. Bernardo Ave., Ste. 200 , Mountain View, CA 94043, USA

25. Departamento de Astronomia, Instituto de Física, Universidade Federal do Rio Grande do Sul (UFRGS) , Av. Bento Goncalves 9500

26. NOAO , PO Box 26732, Tucson, AZ 85726, USA

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

Abstract

ABSTRACT We present optical and near-infrared (NIR) observations of the Type Icn supernova (SN Icn) 2022ann, the fifth member of its newly identified class of SNe. Its early optical spectra are dominated by narrow carbon and oxygen P-Cygni features with absorption velocities of ∼800 km s−1; slower than other SNe Icn and indicative of interaction with a dense, H/He-poor circumstellar medium (CSM) that is outflowing slower than typical Wolf–Rayet wind velocities of >1000 km s−1. We identify helium in NIR spectra 2 weeks after maximum and in optical spectra at 3 weeks, demonstrating that the CSM is not fully devoid of helium. Unlike other SNe Icn, the spectra of SN 2022ann never develop broad features from SN ejecta, including in the nebular phase. Compared to other SNe Icn, SN 2022ann has a low luminosity (o-band absolute magnitude of ∼−17.7), and evolves slowly. The bolometric light curve is well-modelled by 4.8 M⊙ of SN ejecta interacting with 1.3 M⊙ of CSM. We place an upper limit of 0.04 M⊙ of 56Ni synthesized in the explosion. The host galaxy is a dwarf galaxy with a stellar mass of 107.34 M⊙ (implied metallicity of log(Z/Z⊙) ≈ 0.10) and integrated star-formation rate of log (SFR) = −2.20 M⊙ yr−1; both lower than 97 per cent of galaxies observed to produce core-collapse supernovae, although consistent with star-forming galaxies on the galaxy Main Sequence. The low CSM velocity, nickel and ejecta masses, and likely low-metallicity environment disfavour a single Wolf–Rayet progenitor star. Instead, a binary companion is likely required to adequately strip the progenitor and produce a low-velocity outflow.

Funder

National Aeronautics and Space Administration

National Science Foundation

Space Telescope Science Institute

National Council for Scientific and Technological Development

European Social Fund

São Paulo Research Foundation

NSF

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics