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Double “acct”: A Distinct Double-peaked Supernova Matching Pulsational Pair Instability Models

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Double “acct”: A Distinct Double-peaked Supernova Matching Pulsational Pair Instability Models. / Angus, C. R.; Woosley, S. E.; Foley, R. J. et al.
In: Astrophysical Journal Letters, Vol. 977, No. 2, L41, 20.12.2024.

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

Harvard

Angus, CR, Woosley, SE, Foley, RJ, Nicholl, M, Villar, VA, Taggart, K, Pursiainen, M, Ramsden, P, Srivastav, S, Stevance, HF, Moore, T, Auchettl, K, Hoogendam, WB, Khetan, N, Yadavalli, SK, Dimitriadis, G, Gagliano, A, Siebert, MR, Aamer, A, Boer, TD, Chambers, KC, Clocchiatti, A, Coulter, DA, Drout, MR, Farias, D, Fulton, MD, Gall, C, Gao, H, Izzo, L, Jones, DO, Lin, C-C, Magnier, EA, Narayan, G, Ramirez-Ruiz, E, Ransome, CL, Rest, A, Smartt, SJ & Smith, KW 2024, 'Double “acct”: A Distinct Double-peaked Supernova Matching Pulsational Pair Instability Models', Astrophysical Journal Letters, vol. 977, no. 2, L41. https://doi.org/10.3847/2041-8213/ad9264

APA

Angus, C. R., Woosley, S. E., Foley, R. J., Nicholl, M., Villar, V. A., Taggart, K., Pursiainen, M., Ramsden, P., Srivastav, S., Stevance, H. F., Moore, T., Auchettl, K., Hoogendam, W. B., Khetan, N., Yadavalli, S. K., Dimitriadis, G., Gagliano, A., Siebert, M. R., Aamer, A., ... Smith, K. W. (2024). Double “acct”: A Distinct Double-peaked Supernova Matching Pulsational Pair Instability Models. Astrophysical Journal Letters, 977(2), Article L41. https://doi.org/10.3847/2041-8213/ad9264

Vancouver

Angus CR, Woosley SE, Foley RJ, Nicholl M, Villar VA, Taggart K et al. Double “acct”: A Distinct Double-peaked Supernova Matching Pulsational Pair Instability Models. Astrophysical Journal Letters. 2024 Dec 20;977(2):L41. Epub 2024 Dec 17. doi: 10.3847/2041-8213/ad9264

Author

Angus, C. R. ; Woosley, S. E. ; Foley, R. J. et al. / Double “acct” : A Distinct Double-peaked Supernova Matching Pulsational Pair Instability Models. In: Astrophysical Journal Letters. 2024 ; Vol. 977, No. 2.

Bibtex

@article{7fe0da8e109a484188967f8aa8ca5465,
title = "Double “acct”: A Distinct Double-peaked Supernova Matching Pulsational Pair Instability Models",
abstract = "We present multiwavelength data of SN 2020acct, a double-peaked stripped-envelope supernova (SN) in NGC 2981 at ∼150 Mpc. The two peaks are temporally distinct, with maxima separated by 58 rest-frame days and a factor of 20 reduction in flux between. The first is luminous (Mr = −18.00 ± 0.02 mag) and blue (g − r = 0.27 ± 0.03 mag) and displays spectroscopic signatures of interaction with hydrogen-free circumstellar material. The second peak is fainter (Mr = −17.29 ± 0.03 mag) and has some spectroscopic similarities to an evolved stripped-envelope SN, with strong forbidden [Ca ii] and [O ii] features. No other known double-peaked SN exhibits a light curve similar to that of SN 2020acct. We find the likelihood of two individual SNe occurring in the same star-forming region within that time to be highly improbable, while an implausibly fine-tuned configuration would be required to produce two SNe from a single binary system. We find that the peculiar properties of SN 2020acct match models of pulsational pair instability (PPI), in which the initial peak is produced by collisions of shells of ejected material, shortly followed by core collapse. Pulsations from a star with a 72 M⊙ helium core provide an excellent match to the double-peaked light curve. The local galactic environment has a metallicity of 0.4 Z⊙, a level where massive single stars are not expected to retain enough mass to encounter the PPI. However, late binary mergers or a low-metallicity pocket may allow the required core mass. We measure the rate of SN 2020acct–like events to be <3.3 × 10−8 Mpc−3 yr−1 at z = 0.07, or <0.1% of the total core-collapse SN rate.",
keywords = "Supernovae, Type Ib supernovae, Core-collapse supernovae, Massive stars",
author = "Angus, {C. R.} and Woosley, {S. E.} and Foley, {R. J.} and M. Nicholl and Villar, {V. A.} and K. Taggart and M. Pursiainen and P. Ramsden and S. Srivastav and Stevance, {H. F.} and T. Moore and K. Auchettl and Hoogendam, {W. B.} and N. Khetan and Yadavalli, {S. K.} and G. Dimitriadis and A. Gagliano and Siebert, {M. R.} and A. Aamer and Boer, {T. de} and Chambers, {K. C.} and A. Clocchiatti and Coulter, {D. A.} and Drout, {M. R.} and D. Farias and Fulton, {M. D.} and C. Gall and H. Gao and L. Izzo and Jones, {D. O.} and C.-C. Lin and Magnier, {E. A.} and G. Narayan and E. Ramirez-Ruiz and Ransome, {C. L.} and A. Rest and Smartt, {S. J.} and Smith, {K. W.}",
year = "2024",
month = dec,
day = "20",
doi = "10.3847/2041-8213/ad9264",
language = "English",
volume = "977",
journal = "Astrophysical Journal Letters",
issn = "2041-8205",
publisher = "IOP Publishing Ltd",
number = "2",

}

RIS

TY - JOUR

T1 - Double “acct”

T2 - A Distinct Double-peaked Supernova Matching Pulsational Pair Instability Models

AU - Angus, C. R.

AU - Woosley, S. E.

AU - Foley, R. J.

AU - Nicholl, M.

AU - Villar, V. A.

AU - Taggart, K.

AU - Pursiainen, M.

AU - Ramsden, P.

AU - Srivastav, S.

AU - Stevance, H. F.

AU - Moore, T.

AU - Auchettl, K.

AU - Hoogendam, W. B.

AU - Khetan, N.

AU - Yadavalli, S. K.

AU - Dimitriadis, G.

AU - Gagliano, A.

AU - Siebert, M. R.

AU - Aamer, A.

AU - Boer, T. de

AU - Chambers, K. C.

AU - Clocchiatti, A.

AU - Coulter, D. A.

AU - Drout, M. R.

AU - Farias, D.

AU - Fulton, M. D.

AU - Gall, C.

AU - Gao, H.

AU - Izzo, L.

AU - Jones, D. O.

AU - Lin, C.-C.

AU - Magnier, E. A.

AU - Narayan, G.

AU - Ramirez-Ruiz, E.

AU - Ransome, C. L.

AU - Rest, A.

AU - Smartt, S. J.

AU - Smith, K. W.

PY - 2024/12/20

Y1 - 2024/12/20

N2 - We present multiwavelength data of SN 2020acct, a double-peaked stripped-envelope supernova (SN) in NGC 2981 at ∼150 Mpc. The two peaks are temporally distinct, with maxima separated by 58 rest-frame days and a factor of 20 reduction in flux between. The first is luminous (Mr = −18.00 ± 0.02 mag) and blue (g − r = 0.27 ± 0.03 mag) and displays spectroscopic signatures of interaction with hydrogen-free circumstellar material. The second peak is fainter (Mr = −17.29 ± 0.03 mag) and has some spectroscopic similarities to an evolved stripped-envelope SN, with strong forbidden [Ca ii] and [O ii] features. No other known double-peaked SN exhibits a light curve similar to that of SN 2020acct. We find the likelihood of two individual SNe occurring in the same star-forming region within that time to be highly improbable, while an implausibly fine-tuned configuration would be required to produce two SNe from a single binary system. We find that the peculiar properties of SN 2020acct match models of pulsational pair instability (PPI), in which the initial peak is produced by collisions of shells of ejected material, shortly followed by core collapse. Pulsations from a star with a 72 M⊙ helium core provide an excellent match to the double-peaked light curve. The local galactic environment has a metallicity of 0.4 Z⊙, a level where massive single stars are not expected to retain enough mass to encounter the PPI. However, late binary mergers or a low-metallicity pocket may allow the required core mass. We measure the rate of SN 2020acct–like events to be <3.3 × 10−8 Mpc−3 yr−1 at z = 0.07, or <0.1% of the total core-collapse SN rate.

AB - We present multiwavelength data of SN 2020acct, a double-peaked stripped-envelope supernova (SN) in NGC 2981 at ∼150 Mpc. The two peaks are temporally distinct, with maxima separated by 58 rest-frame days and a factor of 20 reduction in flux between. The first is luminous (Mr = −18.00 ± 0.02 mag) and blue (g − r = 0.27 ± 0.03 mag) and displays spectroscopic signatures of interaction with hydrogen-free circumstellar material. The second peak is fainter (Mr = −17.29 ± 0.03 mag) and has some spectroscopic similarities to an evolved stripped-envelope SN, with strong forbidden [Ca ii] and [O ii] features. No other known double-peaked SN exhibits a light curve similar to that of SN 2020acct. We find the likelihood of two individual SNe occurring in the same star-forming region within that time to be highly improbable, while an implausibly fine-tuned configuration would be required to produce two SNe from a single binary system. We find that the peculiar properties of SN 2020acct match models of pulsational pair instability (PPI), in which the initial peak is produced by collisions of shells of ejected material, shortly followed by core collapse. Pulsations from a star with a 72 M⊙ helium core provide an excellent match to the double-peaked light curve. The local galactic environment has a metallicity of 0.4 Z⊙, a level where massive single stars are not expected to retain enough mass to encounter the PPI. However, late binary mergers or a low-metallicity pocket may allow the required core mass. We measure the rate of SN 2020acct–like events to be <3.3 × 10−8 Mpc−3 yr−1 at z = 0.07, or <0.1% of the total core-collapse SN rate.

KW - Supernovae

KW - Type Ib supernovae

KW - Core-collapse supernovae

KW - Massive stars

U2 - 10.3847/2041-8213/ad9264

DO - 10.3847/2041-8213/ad9264

M3 - Journal article

VL - 977

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

SN - 2041-8205

IS - 2

M1 - L41

ER -