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

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SN 2020udy: an SN Iax with strict limits on interaction consistent with a helium-star companion. / Maguire, Kate; Magee, Mark R; Leloudas, Giorgos et al.
In: Monthly Notices of the Royal Astronomical Society, Vol. 525, No. 1, 01.10.2023, p. 1210-1228.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Maguire, K, Magee, MR, Leloudas, G, Miller, AA, Dimitriadis, G, Pursiainen, M, Bulla, M, De, K, Gal-Yam, A, Perley, DA, Fremling, C, Karambelkar, VR, Nordin, J, Reusch, S, Schulze, S, Sollerman, J, Terreran, G, Yang(杨轶), Y, Bellm, EC, Groom, SL, Kasliwal, MM, Kulkarni, SR, Lacroix, L, Masci, FJ, Purdum, JN, Sharma, Y & Smith, R 2023, 'SN 2020udy: an SN Iax with strict limits on interaction consistent with a helium-star companion', Monthly Notices of the Royal Astronomical Society, vol. 525, no. 1, pp. 1210-1228. https://doi.org/10.1093/mnras/stad2316

APA

Maguire, K., Magee, M. R., Leloudas, G., Miller, A. A., Dimitriadis, G., Pursiainen, M., Bulla, M., De, K., Gal-Yam, A., Perley, D. A., Fremling, C., Karambelkar, V. R., Nordin, J., Reusch, S., Schulze, S., Sollerman, J., Terreran, G., Yang(杨轶), Y., Bellm, E. C., ... Smith, R. (2023). SN 2020udy: an SN Iax with strict limits on interaction consistent with a helium-star companion. Monthly Notices of the Royal Astronomical Society, 525(1), 1210-1228. https://doi.org/10.1093/mnras/stad2316

Vancouver

Maguire K, Magee MR, Leloudas G, Miller AA, Dimitriadis G, Pursiainen M et al. SN 2020udy: an SN Iax with strict limits on interaction consistent with a helium-star companion. Monthly Notices of the Royal Astronomical Society. 2023 Oct 1;525(1):1210-1228. doi: 10.1093/mnras/stad2316

Author

Maguire, Kate ; Magee, Mark R ; Leloudas, Giorgos et al. / SN 2020udy: an SN Iax with strict limits on interaction consistent with a helium-star companion. In: Monthly Notices of the Royal Astronomical Society. 2023 ; Vol. 525, No. 1. pp. 1210-1228.

Bibtex

@article{8eccdfee66974799b849fdf4e6f0ba92,
title = "SN 2020udy: an SN Iax with strict limits on interaction consistent with a helium-star companion",
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.",
keywords = "supernovae: general, supernovae: individual: SN 2020udy, techniques: photometric, techniques: polarimetric, techniques: spectroscopic, white dwarfs",
author = "Kate Maguire and Magee, {Mark R} and Giorgos Leloudas and Miller, {Adam A} and Georgios Dimitriadis and Miika Pursiainen and Mattia Bulla and Kishalay De and Avishay Gal-Yam and Perley, {Daniel A} and Christoffer Fremling and Karambelkar, {Viraj R} and Jakob Nordin and Simeon Reusch and Steve Schulze and Jesper Sollerman and Giacomo Terreran and Yi Yang(杨轶) and Bellm, {Eric C} and Groom, {Steven L} and Kasliwal, {Mansi M} and Kulkarni, {Shrinivas R} and Leander Lacroix and Masci, {Frank J} and Purdum, {Josiah N} and Yashvi Sharma and Roger Smith",
year = "2023",
month = oct,
day = "1",
doi = "10.1093/mnras/stad2316",
language = "English",
volume = "525",
pages = "1210--1228",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "1",

}

RIS

TY - JOUR

T1 - SN 2020udy: an SN Iax with strict limits on interaction consistent with a helium-star companion

AU - Maguire, Kate

AU - Magee, Mark R

AU - Leloudas, Giorgos

AU - Miller, Adam A

AU - Dimitriadis, Georgios

AU - Pursiainen, Miika

AU - Bulla, Mattia

AU - De, Kishalay

AU - Gal-Yam, Avishay

AU - Perley, Daniel A

AU - Fremling, Christoffer

AU - Karambelkar, Viraj R

AU - Nordin, Jakob

AU - Reusch, Simeon

AU - Schulze, Steve

AU - Sollerman, Jesper

AU - Terreran, Giacomo

AU - Yang(杨轶), Yi

AU - Bellm, Eric C

AU - Groom, Steven L

AU - Kasliwal, Mansi M

AU - Kulkarni, Shrinivas R

AU - Lacroix, Leander

AU - Masci, Frank J

AU - Purdum, Josiah N

AU - Sharma, Yashvi

AU - Smith, Roger

PY - 2023/10/1

Y1 - 2023/10/1

N2 - 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.

AB - 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.

KW - supernovae: general

KW - supernovae: individual: SN 2020udy

KW - techniques: photometric

KW - techniques: polarimetric

KW - techniques: spectroscopic

KW - white dwarfs

U2 - 10.1093/mnras/stad2316

DO - 10.1093/mnras/stad2316

M3 - Journal article

VL - 525

SP - 1210

EP - 1228

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -