A low-mass helium star progenitor model for the Type Ibn SN 2020nxt

Qinan Wang; Anika Goel; Luc Dessart; Ori D. Fox; Melissa Shahbandeh; Sofia Rest; Armin Rest; Jose H. Groh; Andrew Allan; Claes Fransson; Nathan Smith; Griffin Hosseinzadeh; Alexei V. Filippenko; Jennifer Andrews; K. Azalee Bostroem; Thomas G. Brink; Peter Brown; Jamison Burke; Roger Chevalier; Geoffrey C. Clayton; Mi Dai; Kyle W. Davis; Ryan J. Foley; Sebastian Gomez; Chelsea Harris; Daichi Hiramatsu; D. Andrew Howell; Connor Jennings; Saurabh W. Jha; Mansi M. Kasliwal; Patrick L. Kelly; Erik C. Kool; Evelyn Liu; Emily Ma; Curtis McCully; Adam M. Miller; Yukei Murakami; Estefania Padilla Gonzalez; Craig Pellegrino; Derek Perera; Justin Pierel; César Rojas-Bravo; Matthew R. Siebert; Jesper Sollerman; Tamás Szalai; Samaporn Tinyanont; Schuyler D. Van Dyk; Wei Kang Zheng; Kenneth C. Chambers; David A. Coulter; Thomas de Boer; Nicholas Earl; Diego Farias; Christa Gall; Peter McGill; Conor L. Ransome; Kirsty Taggart; V. Ashley Villar

doi:10.1093/mnras/stae1038

A low-mass helium star progenitor model for the Type Ibn SN 2020nxt

Qinan Wang^*, Anika Goel, Luc Dessart, Ori D. Fox, Melissa Shahbandeh, Sofia Rest, Armin Rest, Jose H. Groh, Andrew Allan, Claes Fransson, Nathan Smith, Griffin Hosseinzadeh, Alexei V. Filippenko, Jennifer Andrews, K. Azalee Bostroem, Thomas G. Brink, Peter Brown, Jamison Burke, Roger Chevalier, Geoffrey C. ClaytonMi Dai, Kyle W. Davis, Ryan J. Foley, Sebastian Gomez, Chelsea Harris, Daichi Hiramatsu, D. Andrew Howell, Connor Jennings, Saurabh W. Jha, Mansi M. Kasliwal, Patrick L. Kelly, Erik C. Kool, Evelyn Liu, Emily Ma, Curtis McCully, Adam M. Miller, Yukei Murakami, Estefania Padilla Gonzalez, Craig Pellegrino, Derek Perera, Justin Pierel, César Rojas-Bravo, Matthew R. Siebert, Jesper Sollerman, Tamás Szalai, Samaporn Tinyanont, Schuyler D. Van Dyk, Wei Kang Zheng, Kenneth C. Chambers, David A. Coulter, Thomas de Boer, Nicholas Earl, Diego Farias, Christa Gall, Peter McGill, Conor L. Ransome, Kirsty Taggart, V. Ashley Villar

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

A growing number of supernovae (SNe) are now known to exhibit evidence for significant interaction with a dense, pre-existing, circumstellar medium (CSM). SNe Ibn comprise one such class that can be characterized by both rapidly evolving light curves and persistent narrow He I lines. The origin of such a dense CSM in these systems remains a pressing question, specifically concerning the progenitor system and mass-loss mechanism. In this paper, we present multiwavelength data of the Type Ibn SN 2020nxt, including HST/STIS ultraviolet spectra. We fit the data with recently updated CMFGEN models designed to handle configurations for SNe Ibn. The UV coverage yields strong constraints on the energetics and, when combined with the CMFGEN models, offer new insight on potential progenitor systems. We find the most successful model is a ≾4 M_∅ helium star that lost its ∼ 1 M_∅ He-rich envelope in the years preceding core collapse. We also consider viable alternatives, such as a He white dwarf merger. Ultimately, we conclude at least some SNe Ibn do not arise from single, massive (>30 M_∅) Wolf–Rayet-like stars.

Original language	English (US)
Pages (from-to)	3906-3923
Number of pages	18
Journal	Monthly Notices of the Royal Astronomical Society
Volume	530
Issue number	4
DOIs	https://doi.org/10.1093/mnras/stae1038
State	Published - Jun 1 2024

Keywords

circumstellar matter
supernovae: individual: SN 2020nxt
transients: supernovae
ultraviolet: general

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnras/stae1038

Cite this

Wang, Q., Goel, A., Dessart, L., Fox, O. D., Shahbandeh, M., Rest, S., Rest, A., Groh, J. H., Allan, A., Fransson, C., Smith, N., Hosseinzadeh, G., Filippenko, A. V., Andrews, J., Bostroem, K. A., Brink, T. G., Brown, P., Burke, J., Chevalier, R., ... Villar, V. A. (2024). A low-mass helium star progenitor model for the Type Ibn SN 2020nxt. Monthly Notices of the Royal Astronomical Society, 530(4), 3906-3923. https://doi.org/10.1093/mnras/stae1038

@article{13794bbba4d94dc0b83e78068bb32327,

title = "A low-mass helium star progenitor model for the Type Ibn SN 2020nxt",

abstract = "A growing number of supernovae (SNe) are now known to exhibit evidence for significant interaction with a dense, pre-existing, circumstellar medium (CSM). SNe Ibn comprise one such class that can be characterized by both rapidly evolving light curves and persistent narrow He I lines. The origin of such a dense CSM in these systems remains a pressing question, specifically concerning the progenitor system and mass-loss mechanism. In this paper, we present multiwavelength data of the Type Ibn SN 2020nxt, including HST/STIS ultraviolet spectra. We fit the data with recently updated CMFGEN models designed to handle configurations for SNe Ibn. The UV coverage yields strong constraints on the energetics and, when combined with the CMFGEN models, offer new insight on potential progenitor systems. We find the most successful model is a ≾4 M∅ helium star that lost its ∼ 1 M∅ He-rich envelope in the years preceding core collapse. We also consider viable alternatives, such as a He white dwarf merger. Ultimately, we conclude at least some SNe Ibn do not arise from single, massive (>30 M∅) Wolf–Rayet-like stars.",

keywords = "circumstellar matter, supernovae: individual: SN 2020nxt, transients: supernovae, ultraviolet: general",

author = "Qinan Wang and Anika Goel and Luc Dessart and Fox, {Ori D.} and Melissa Shahbandeh and Sofia Rest and Armin Rest and Groh, {Jose H.} and Andrew Allan and Claes Fransson and Nathan Smith and Griffin Hosseinzadeh and Filippenko, {Alexei V.} and Jennifer Andrews and Bostroem, {K. Azalee} and Brink, {Thomas G.} and Peter Brown and Jamison Burke and Roger Chevalier and Clayton, {Geoffrey C.} and Mi Dai and Davis, {Kyle W.} and Foley, {Ryan J.} and Sebastian Gomez and Chelsea Harris and Daichi Hiramatsu and Howell, {D. Andrew} and Connor Jennings and Jha, {Saurabh W.} and Kasliwal, {Mansi M.} and Kelly, {Patrick L.} and Kool, {Erik C.} and Evelyn Liu and Emily Ma and Curtis McCully and Miller, {Adam M.} and Yukei Murakami and Gonzalez, {Estefania Padilla} and Craig Pellegrino and Derek Perera and Justin Pierel and C{\'e}sar Rojas-Bravo and Siebert, {Matthew R.} and Jesper Sollerman and Tam{\'a}s Szalai and Samaporn Tinyanont and {Van Dyk}, {Schuyler D.} and Zheng, {Wei Kang} and Chambers, {Kenneth C.} and Coulter, {David A.} and {de Boer}, Thomas and Nicholas Earl and Diego Farias and Christa Gall and Peter McGill and Ransome, {Conor L.} and Kirsty Taggart and Villar, {V. Ashley}",

note = "Publisher Copyright: {\textcopyright} 2024 The Author(s).",

year = "2024",

month = jun,

day = "1",

doi = "10.1093/mnras/stae1038",

language = "English (US)",

volume = "530",

pages = "3906--3923",

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

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

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Wang, Q, Goel, A, Dessart, L, Fox, OD, Shahbandeh, M, Rest, S, Rest, A, Groh, JH, Allan, A, Fransson, C, Smith, N, Hosseinzadeh, G, Filippenko, AV, Andrews, J, Bostroem, KA, Brink, TG, Brown, P, Burke, J, Chevalier, R, Clayton, GC, Dai, M, Davis, KW, Foley, RJ, Gomez, S, Harris, C, Hiramatsu, D, Howell, DA, Jennings, C, Jha, SW, Kasliwal, MM, Kelly, PL, Kool, EC, Liu, E, Ma, E, McCully, C, Miller, AM, Murakami, Y, Gonzalez, EP, Pellegrino, C, Perera, D, Pierel, J, Rojas-Bravo, C, Siebert, MR, Sollerman, J, Szalai, T, Tinyanont, S, Van Dyk, SD, Zheng, WK, Chambers, KC, Coulter, DA, de Boer, T, Earl, N, Farias, D, Gall, C, McGill, P, Ransome, CL, Taggart, K & Villar, VA 2024, 'A low-mass helium star progenitor model for the Type Ibn SN 2020nxt', Monthly Notices of the Royal Astronomical Society, vol. 530, no. 4, pp. 3906-3923. https://doi.org/10.1093/mnras/stae1038

TY - JOUR

T1 - A low-mass helium star progenitor model for the Type Ibn SN 2020nxt

AU - Wang, Qinan

AU - Goel, Anika

AU - Dessart, Luc

AU - Fox, Ori D.

AU - Shahbandeh, Melissa

AU - Rest, Sofia

AU - Rest, Armin

AU - Groh, Jose H.

AU - Allan, Andrew

AU - Fransson, Claes

AU - Smith, Nathan

AU - Hosseinzadeh, Griffin

AU - Filippenko, Alexei V.

AU - Andrews, Jennifer

AU - Bostroem, K. Azalee

AU - Brink, Thomas G.

AU - Brown, Peter

AU - Burke, Jamison

AU - Chevalier, Roger

AU - Clayton, Geoffrey C.

AU - Dai, Mi

AU - Davis, Kyle W.

AU - Foley, Ryan J.

AU - Gomez, Sebastian

AU - Harris, Chelsea

AU - Hiramatsu, Daichi

AU - Howell, D. Andrew

AU - Jennings, Connor

AU - Jha, Saurabh W.

AU - Kasliwal, Mansi M.

AU - Kelly, Patrick L.

AU - Kool, Erik C.

AU - Liu, Evelyn

AU - Ma, Emily

AU - McCully, Curtis

AU - Miller, Adam M.

AU - Murakami, Yukei

AU - Gonzalez, Estefania Padilla

AU - Pellegrino, Craig

AU - Perera, Derek

AU - Pierel, Justin

AU - Rojas-Bravo, César

AU - Siebert, Matthew R.

AU - Sollerman, Jesper

AU - Szalai, Tamás

AU - Tinyanont, Samaporn

AU - Van Dyk, Schuyler D.

AU - Zheng, Wei Kang

AU - Chambers, Kenneth C.

AU - Coulter, David A.

AU - de Boer, Thomas

AU - Earl, Nicholas

AU - Farias, Diego

AU - Gall, Christa

AU - McGill, Peter

AU - Ransome, Conor L.

AU - Taggart, Kirsty

AU - Villar, V. Ashley

PY - 2024/6/1

Y1 - 2024/6/1

N2 - A growing number of supernovae (SNe) are now known to exhibit evidence for significant interaction with a dense, pre-existing, circumstellar medium (CSM). SNe Ibn comprise one such class that can be characterized by both rapidly evolving light curves and persistent narrow He I lines. The origin of such a dense CSM in these systems remains a pressing question, specifically concerning the progenitor system and mass-loss mechanism. In this paper, we present multiwavelength data of the Type Ibn SN 2020nxt, including HST/STIS ultraviolet spectra. We fit the data with recently updated CMFGEN models designed to handle configurations for SNe Ibn. The UV coverage yields strong constraints on the energetics and, when combined with the CMFGEN models, offer new insight on potential progenitor systems. We find the most successful model is a ≾4 M∅ helium star that lost its ∼ 1 M∅ He-rich envelope in the years preceding core collapse. We also consider viable alternatives, such as a He white dwarf merger. Ultimately, we conclude at least some SNe Ibn do not arise from single, massive (>30 M∅) Wolf–Rayet-like stars.

AB - A growing number of supernovae (SNe) are now known to exhibit evidence for significant interaction with a dense, pre-existing, circumstellar medium (CSM). SNe Ibn comprise one such class that can be characterized by both rapidly evolving light curves and persistent narrow He I lines. The origin of such a dense CSM in these systems remains a pressing question, specifically concerning the progenitor system and mass-loss mechanism. In this paper, we present multiwavelength data of the Type Ibn SN 2020nxt, including HST/STIS ultraviolet spectra. We fit the data with recently updated CMFGEN models designed to handle configurations for SNe Ibn. The UV coverage yields strong constraints on the energetics and, when combined with the CMFGEN models, offer new insight on potential progenitor systems. We find the most successful model is a ≾4 M∅ helium star that lost its ∼ 1 M∅ He-rich envelope in the years preceding core collapse. We also consider viable alternatives, such as a He white dwarf merger. Ultimately, we conclude at least some SNe Ibn do not arise from single, massive (>30 M∅) Wolf–Rayet-like stars.

KW - circumstellar matter

KW - supernovae: individual: SN 2020nxt

KW - transients: supernovae

KW - ultraviolet: general

UR - http://www.scopus.com/inward/record.url?scp=85193066850&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85193066850&partnerID=8YFLogxK

U2 - 10.1093/mnras/stae1038

DO - 10.1093/mnras/stae1038

M3 - Article

AN - SCOPUS:85193066850

SN - 0035-8711

VL - 530

SP - 3906

EP - 3923

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

A low-mass helium star progenitor model for the Type Ibn SN 2020nxt

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