The lowest-metallicity type II supernova from the highest-mass red supergiant progenitor

J. P. Anderson; L. Dessart; C. P. Gutiérrez; T. Krühler; L. Galbany; A. Jerkstrand; S. J. Smartt; C. Contreras; N. Morrell; M. M. Phillips; M. D. Stritzinger; E. Y. Hsiao; S. González-Gaitán; C. Agliozzo; S. Castellón; K. C. Chambers; T.-W. Chen; H. Flewelling; C. Gonzalez; G. Hosseinzadeh; M. Huber; M. Fraser; C. Inserra; E. Kankare; S. Mattila; E. Magnier; K. Maguire; T. B. Lowe; J. Sollerman; M. Sullivan; D. R. Young; S. Valenti

doi:10.1038/s41550-018-0458-4

The lowest-metallicity type II supernova from the highest-mass red supergiant progenitor

J. P. Anderson, L. Dessart, C. P. Gutiérrez, T. Krühler, L. Galbany, A. Jerkstrand, S. J. Smartt, C. Contreras, N. Morrell, M. M. Phillips, M. D. Stritzinger, E. Y. Hsiao, S. González-Gaitán, C. Agliozzo, S. Castellón, K. C. Chambers, T.-W. Chen, H. Flewelling, C. Gonzalez, G. HosseinzadehM. Huber, M. Fraser, C. Inserra, E. Kankare, S. Mattila, E. Magnier, K. Maguire, T. B. Lowe, J. Sollerman, M. Sullivan, D. R. Young, S. Valenti

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Abstract

Red supergiants have been confirmed as the progenitor stars of the majority of hydrogen-rich type II supernovae1. However, while such stars are observed with masses >25 M⊙ (ref. 2), detections of >18 M⊙progenitors remain elusive1. Red supergiants are also expected to form at all metallicities, but discoveries of explosions from low-metallicity progenitors are scarce. Here, we report observations of the type II supernova, SN 2015bs, for which we infer a progenitor metallicity of ≤0.1 Z⊙ from comparison to photospheric-phase spectral models3, and a zero-age main-sequence mass of 17–25 M⊙ through comparison to nebular-phase spectral models4,5. SN 2015bs displays a normal ‘plateau’ light-curve morphology, and typical spectral properties, implying a red supergiant progenitor. This is the first example of such a high-mass progenitor for a ‘normal’ type II supernova, suggesting a link between high-mass red supergiant explosions and low-metallicity progenitors.

Original language	English
Pages (from-to)	574-579
Journal	Nature Astronomy
Volume	2
DOIs	https://doi.org/10.1038/s41550-018-0458-4
Publication status	Published - 07 May 2018

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The lowest-metallicity type II supernova from the highest-mass red supergiant progenitor
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Anderson, J. P., Dessart, L., Gutiérrez, C. P., Krühler, T., Galbany, L., Jerkstrand, A., Smartt, S. J., Contreras, C., Morrell, N., Phillips, M. M., Stritzinger, M. D., Hsiao, E. Y., González-Gaitán, S., Agliozzo, C., Castellón, S., Chambers, K. C., Chen, T.-W., Flewelling, H., Gonzalez, C., ... Valenti, S. (2018). The lowest-metallicity type II supernova from the highest-mass red supergiant progenitor. Nature Astronomy, 2, 574-579. https://doi.org/10.1038/s41550-018-0458-4

@article{9115084e0452436981bb19e82586f1e5,

title = "The lowest-metallicity type II supernova from the highest-mass red supergiant progenitor",

abstract = "Red supergiants have been confirmed as the progenitor stars of the majority of hydrogen-rich type II supernovae1. However, while such stars are observed with masses >25 M⊙ (ref. 2), detections of >18 M⊙progenitors remain elusive1. Red supergiants are also expected to form at all metallicities, but discoveries of explosions from low-metallicity progenitors are scarce. Here, we report observations of the type II supernova, SN 2015bs, for which we infer a progenitor metallicity of ≤0.1 Z⊙ from comparison to photospheric-phase spectral models3, and a zero-age main-sequence mass of 17–25 M⊙ through comparison to nebular-phase spectral models4,5. SN 2015bs displays a normal {\textquoteleft}plateau{\textquoteright} light-curve morphology, and typical spectral properties, implying a red supergiant progenitor. This is the first example of such a high-mass progenitor for a {\textquoteleft}normal{\textquoteright} type II supernova, suggesting a link between high-mass red supergiant explosions and low-metallicity progenitors.",

author = "Anderson, {J. P.} and L. Dessart and Guti{\'e}rrez, {C. P.} and T. Kr{\"u}hler and L. Galbany and A. Jerkstrand and Smartt, {S. J.} and C. Contreras and N. Morrell and Phillips, {M. M.} and Stritzinger, {M. D.} and Hsiao, {E. Y.} and S. Gonz{\'a}lez-Gait{\'a}n and C. Agliozzo and S. Castell{\'o}n and Chambers, {K. C.} and T.-W. Chen and H. Flewelling and C. Gonzalez and G. Hosseinzadeh and M. Huber and M. Fraser and C. Inserra and E. Kankare and S. Mattila and E. Magnier and K. Maguire and Lowe, {T. B.} and J. Sollerman and M. Sullivan and Young, {D. R.} and S. Valenti",

year = "2018",

month = may,

day = "7",

doi = "10.1038/s41550-018-0458-4",

language = "English",

volume = "2",

pages = "574--579",

journal = "Nature Astronomy",

issn = "2397-3366",

publisher = "Nature Publishing Group",

}

Anderson, JP, Dessart, L, Gutiérrez, CP, Krühler, T, Galbany, L, Jerkstrand, A, Smartt, SJ, Contreras, C, Morrell, N, Phillips, MM, Stritzinger, MD, Hsiao, EY, González-Gaitán, S, Agliozzo, C, Castellón, S, Chambers, KC, Chen, T-W, Flewelling, H, Gonzalez, C, Hosseinzadeh, G, Huber, M, Fraser, M, Inserra, C, Kankare, E, Mattila, S, Magnier, E, Maguire, K, Lowe, TB, Sollerman, J, Sullivan, M, Young, DR & Valenti, S 2018, 'The lowest-metallicity type II supernova from the highest-mass red supergiant progenitor', Nature Astronomy, vol. 2, pp. 574-579. https://doi.org/10.1038/s41550-018-0458-4

TY - JOUR

T1 - The lowest-metallicity type II supernova from the highest-mass red supergiant progenitor

AU - Anderson, J. P.

AU - Dessart, L.

AU - Gutiérrez, C. P.

AU - Krühler, T.

AU - Galbany, L.

AU - Jerkstrand, A.

AU - Smartt, S. J.

AU - Contreras, C.

AU - Morrell, N.

AU - Phillips, M. M.

AU - Stritzinger, M. D.

AU - Hsiao, E. Y.

AU - González-Gaitán, S.

AU - Agliozzo, C.

AU - Castellón, S.

AU - Chambers, K. C.

AU - Chen, T.-W.

AU - Flewelling, H.

AU - Gonzalez, C.

AU - Hosseinzadeh, G.

AU - Huber, M.

AU - Fraser, M.

AU - Inserra, C.

AU - Kankare, E.

AU - Mattila, S.

AU - Magnier, E.

AU - Maguire, K.

AU - Lowe, T. B.

AU - Sollerman, J.

AU - Sullivan, M.

AU - Young, D. R.

AU - Valenti, S.

PY - 2018/5/7

Y1 - 2018/5/7

N2 - Red supergiants have been confirmed as the progenitor stars of the majority of hydrogen-rich type II supernovae1. However, while such stars are observed with masses >25 M⊙ (ref. 2), detections of >18 M⊙progenitors remain elusive1. Red supergiants are also expected to form at all metallicities, but discoveries of explosions from low-metallicity progenitors are scarce. Here, we report observations of the type II supernova, SN 2015bs, for which we infer a progenitor metallicity of ≤0.1 Z⊙ from comparison to photospheric-phase spectral models3, and a zero-age main-sequence mass of 17–25 M⊙ through comparison to nebular-phase spectral models4,5. SN 2015bs displays a normal ‘plateau’ light-curve morphology, and typical spectral properties, implying a red supergiant progenitor. This is the first example of such a high-mass progenitor for a ‘normal’ type II supernova, suggesting a link between high-mass red supergiant explosions and low-metallicity progenitors.

AB - Red supergiants have been confirmed as the progenitor stars of the majority of hydrogen-rich type II supernovae1. However, while such stars are observed with masses >25 M⊙ (ref. 2), detections of >18 M⊙progenitors remain elusive1. Red supergiants are also expected to form at all metallicities, but discoveries of explosions from low-metallicity progenitors are scarce. Here, we report observations of the type II supernova, SN 2015bs, for which we infer a progenitor metallicity of ≤0.1 Z⊙ from comparison to photospheric-phase spectral models3, and a zero-age main-sequence mass of 17–25 M⊙ through comparison to nebular-phase spectral models4,5. SN 2015bs displays a normal ‘plateau’ light-curve morphology, and typical spectral properties, implying a red supergiant progenitor. This is the first example of such a high-mass progenitor for a ‘normal’ type II supernova, suggesting a link between high-mass red supergiant explosions and low-metallicity progenitors.

U2 - 10.1038/s41550-018-0458-4

DO - 10.1038/s41550-018-0458-4

M3 - Article

SN - 2397-3366

VL - 2

SP - 574

EP - 579

JO - Nature Astronomy

JF - Nature Astronomy

ER -

The lowest-metallicity type II supernova from the highest-mass red supergiant progenitor

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