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Early-time spectroscopic modelling of the transitional Type Ia Supernova 2021rhu with TARDIS

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Early-time spectroscopic modelling of the transitional Type Ia Supernova 2021rhu with TARDIS. / Harvey, Luke; Maguire, Kate; Magee, Mark R. et al.
In: Monthly Notices of the Royal Astronomical Society, Vol. 522, No. 3, 03.05.2023, p. 4444-4467.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Harvey, L, Maguire, K, Magee, MR, Bulla, M, Dhawan, S, Schulze, S, Sollerman, J, Deckers, M, Dimitriadis, G, Reusch, S, Smith, M, Terwel, J, Coughlin, MW, Masci, F, Purdum, J, Reedy, A, Robert, E & Wold, A 2023, 'Early-time spectroscopic modelling of the transitional Type Ia Supernova 2021rhu with TARDIS', Monthly Notices of the Royal Astronomical Society, vol. 522, no. 3, pp. 4444-4467. https://doi.org/10.1093/mnras/stad1226

APA

Harvey, L., Maguire, K., Magee, M. R., Bulla, M., Dhawan, S., Schulze, S., Sollerman, J., Deckers, M., Dimitriadis, G., Reusch, S., Smith, M., Terwel, J., Coughlin, M. W., Masci, F., Purdum, J., Reedy, A., Robert, E., & Wold, A. (2023). Early-time spectroscopic modelling of the transitional Type Ia Supernova 2021rhu with TARDIS. Monthly Notices of the Royal Astronomical Society, 522(3), 4444-4467. https://doi.org/10.1093/mnras/stad1226

Vancouver

Harvey L, Maguire K, Magee MR, Bulla M, Dhawan S, Schulze S et al. Early-time spectroscopic modelling of the transitional Type Ia Supernova 2021rhu with TARDIS. Monthly Notices of the Royal Astronomical Society. 2023 May 3;522(3):4444-4467. doi: 10.1093/mnras/stad1226

Author

Harvey, Luke ; Maguire, Kate ; Magee, Mark R. et al. / Early-time spectroscopic modelling of the transitional Type Ia Supernova 2021rhu with TARDIS. In: Monthly Notices of the Royal Astronomical Society. 2023 ; Vol. 522, No. 3. pp. 4444-4467.

Bibtex

@article{fae9492f411c4484acb00fa8ca5ea596,
title = "Early-time spectroscopic modelling of the transitional Type Ia Supernova 2021rhu with TARDIS",
abstract = "An open question in SN Ia research is where the boundary lies between 'normal' Type Ia supernovae (SNe Ia) that are used in cosmological measurements and those that sit off the Phillips relation. We present the spectroscopic modelling of one such '86G-like' transitional SN Ia, SN 2021rhu, that has recently been employed as a local Hubble Constant calibrator using a tip of the red-giant branch measurement. We detail its modelling from -12 d until maximum brightness using the radiative-transfer spectral-synthesis code tardis. We base our modelling on literature delayed-detonation and deflagration models of Chandrasekhar mass white dwarfs, as well as the double-detonation models of sub-Chandrasekhar mass white dwarfs. We present a new method for 'projecting' abundance profiles to different density profiles for ease of computation. Due to the small velocity extent and low outer densities of the W7 profile, we find it inadequate to reproduce the evolution of SN 2021rhu as it fails to match the high-velocity calcium components. The host extinction of SN 2021rhu is uncertain but we use modelling with and without an extinction correction to set lower and upper limits on the abundances of individual species. Comparing these limits to literature models we conclude that the spectral evolution of SN 2021rhu is also incompatible with double-detonation scenarios, lying more in line with those resulting from the delayed detonation mechanism (although there are some discrepancies, in particular a larger titanium abundance in SN 2021rhu compared to the literature). This suggests that SN 2021rhu is likely a lower luminosity, and hence lower temperature, version of a normal SN Ia.",
keywords = "Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics",
author = "Luke Harvey and Kate Maguire and Magee, {Mark R.} and Mattia Bulla and Suhail Dhawan and Steve Schulze and Jesper Sollerman and Maxime Deckers and Georgios Dimitriadis and Simeon Reusch and Mathew Smith and Jacco Terwel and Coughlin, {Michael W.} and Frank Masci and Josiah Purdum and Alexander Reedy and Estelle Robert and Avery Wold",
year = "2023",
month = may,
day = "3",
doi = "10.1093/mnras/stad1226",
language = "English",
volume = "522",
pages = "4444--4467",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "3",

}

RIS

TY - JOUR

T1 - Early-time spectroscopic modelling of the transitional Type Ia Supernova 2021rhu with TARDIS

AU - Harvey, Luke

AU - Maguire, Kate

AU - Magee, Mark R.

AU - Bulla, Mattia

AU - Dhawan, Suhail

AU - Schulze, Steve

AU - Sollerman, Jesper

AU - Deckers, Maxime

AU - Dimitriadis, Georgios

AU - Reusch, Simeon

AU - Smith, Mathew

AU - Terwel, Jacco

AU - Coughlin, Michael W.

AU - Masci, Frank

AU - Purdum, Josiah

AU - Reedy, Alexander

AU - Robert, Estelle

AU - Wold, Avery

PY - 2023/5/3

Y1 - 2023/5/3

N2 - An open question in SN Ia research is where the boundary lies between 'normal' Type Ia supernovae (SNe Ia) that are used in cosmological measurements and those that sit off the Phillips relation. We present the spectroscopic modelling of one such '86G-like' transitional SN Ia, SN 2021rhu, that has recently been employed as a local Hubble Constant calibrator using a tip of the red-giant branch measurement. We detail its modelling from -12 d until maximum brightness using the radiative-transfer spectral-synthesis code tardis. We base our modelling on literature delayed-detonation and deflagration models of Chandrasekhar mass white dwarfs, as well as the double-detonation models of sub-Chandrasekhar mass white dwarfs. We present a new method for 'projecting' abundance profiles to different density profiles for ease of computation. Due to the small velocity extent and low outer densities of the W7 profile, we find it inadequate to reproduce the evolution of SN 2021rhu as it fails to match the high-velocity calcium components. The host extinction of SN 2021rhu is uncertain but we use modelling with and without an extinction correction to set lower and upper limits on the abundances of individual species. Comparing these limits to literature models we conclude that the spectral evolution of SN 2021rhu is also incompatible with double-detonation scenarios, lying more in line with those resulting from the delayed detonation mechanism (although there are some discrepancies, in particular a larger titanium abundance in SN 2021rhu compared to the literature). This suggests that SN 2021rhu is likely a lower luminosity, and hence lower temperature, version of a normal SN Ia.

AB - An open question in SN Ia research is where the boundary lies between 'normal' Type Ia supernovae (SNe Ia) that are used in cosmological measurements and those that sit off the Phillips relation. We present the spectroscopic modelling of one such '86G-like' transitional SN Ia, SN 2021rhu, that has recently been employed as a local Hubble Constant calibrator using a tip of the red-giant branch measurement. We detail its modelling from -12 d until maximum brightness using the radiative-transfer spectral-synthesis code tardis. We base our modelling on literature delayed-detonation and deflagration models of Chandrasekhar mass white dwarfs, as well as the double-detonation models of sub-Chandrasekhar mass white dwarfs. We present a new method for 'projecting' abundance profiles to different density profiles for ease of computation. Due to the small velocity extent and low outer densities of the W7 profile, we find it inadequate to reproduce the evolution of SN 2021rhu as it fails to match the high-velocity calcium components. The host extinction of SN 2021rhu is uncertain but we use modelling with and without an extinction correction to set lower and upper limits on the abundances of individual species. Comparing these limits to literature models we conclude that the spectral evolution of SN 2021rhu is also incompatible with double-detonation scenarios, lying more in line with those resulting from the delayed detonation mechanism (although there are some discrepancies, in particular a larger titanium abundance in SN 2021rhu compared to the literature). This suggests that SN 2021rhu is likely a lower luminosity, and hence lower temperature, version of a normal SN Ia.

KW - Astrophysics - High Energy Astrophysical Phenomena

KW - Astrophysics - Solar and Stellar Astrophysics

U2 - 10.1093/mnras/stad1226

DO - 10.1093/mnras/stad1226

M3 - Journal article

VL - 522

SP - 4444

EP - 4467

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -