Transitional events in the spectrophotometric regime between stripped envelope and superluminous supernovae

S. J. Prentice; C. Inserra; S. Schulze; M. Nicholl; P. A. Mazzali; S. D. Vergani; L. Galbany; J. P. Anderson; C. Ashall; T. W. Chen; M. Deckers; M. Delgado Mancheño; R. González Díaz; S. González-Gaitán; M. Gromadzki; C. P. Gutiérrez; L. Harvey; A. Kozyreva; M. R. Magee; K. Maguire; T. E. Müller-Bravo; S. Muñoz Torres; P. J. Pessi; J. Sollerman; J. Teffs; J. H. Terwel; D. R. Young

doi:10.1093/mnras/stab2864

Transitional events in the spectrophotometric regime between stripped envelope and superluminous supernovae

S. J. Prentice, C. Inserra, S. Schulze, M. Nicholl, P. A. Mazzali, S. D. Vergani, L. Galbany, J. P. Anderson, C. Ashall, T. W. Chen, M. Deckers, M. Delgado Mancheño, R. González Díaz, S. González-Gaitán, M. Gromadzki, C. P. Gutiérrez, L. Harvey, A. Kozyreva, M. R. Magee, K. MaguireT. E. Müller-Bravo, S. Muñoz Torres, P. J. Pessi, J. Sollerman, J. Teffs, J. H. Terwel, D. R. Young

Physics and Astronomy

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Abstract

The division between stripped-envelope supernovae (SE-SNe) and superluminous supernovae (SLSNe) is not well-defined in either photometric or spectroscopic space. While a sharp luminosity threshold has been suggested, there remains an increasing number of transitional objects that reach this threshold without the spectroscopic signatures common to SLSNe. In this work, we present data and analysis on four SNe transitional between SE-SNe and SLSNe; the He-poor SNe 2019dwa and 2019cri, and the He-rich SNe 2019hge and 2019unb. Each object displays long-lived and variable photometric evolution with luminosities around the SLSN threshold of M_r < -19.8 mag. Spectroscopically however, these objects are similar to SE-SNe, with line velocities lower than either SE-SNe and SLSNe, and thus represent an interesting case of rare transitional events....

Original language	English
Pages (from-to)	4342–4358
Journal	Monthly Notices of the Royal Astronomical Society
Volume	508
Issue number	3
Early online date	5 Oct 2021
DOIs	https://doi.org/10.1093/mnras/stab2864
Publication status	Published - Dec 2021

Keywords

supernovae: general

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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PrenticeSJ2021TransiAccepted author manuscript, 2.74 MBLicence: None: All rights reserved

https://arxiv.org/pdf/2109.14572.pdf

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Prentice, S. J., Inserra, C., Schulze, S., Nicholl, M., Mazzali, P. A., Vergani, S. D., Galbany, L., Anderson, J. P., Ashall, C., Chen, T. W., Deckers, M., Delgado Mancheño, M., González Díaz, R., González-Gaitán, S., Gromadzki, M., Gutiérrez, C. P., Harvey, L., Kozyreva, A., Magee, M. R., ... Young, D. R. (2021). Transitional events in the spectrophotometric regime between stripped envelope and superluminous supernovae. Monthly Notices of the Royal Astronomical Society, 508(3), 4342–4358. https://doi.org/10.1093/mnras/stab2864

@article{6e08575de61d4e43a24337144a776364,

title = "Transitional events in the spectrophotometric regime between stripped envelope and superluminous supernovae",

abstract = "The division between stripped-envelope supernovae (SE-SNe) and superluminous supernovae (SLSNe) is not well-defined in either photometric or spectroscopic space. While a sharp luminosity threshold has been suggested, there remains an increasing number of transitional objects that reach this threshold without the spectroscopic signatures common to SLSNe. In this work, we present data and analysis on four SNe transitional between SE-SNe and SLSNe; the He-poor SNe 2019dwa and 2019cri, and the He-rich SNe 2019hge and 2019unb. Each object displays long-lived and variable photometric evolution with luminosities around the SLSN threshold of Mr < -19.8 mag. Spectroscopically however, these objects are similar to SE-SNe, with line velocities lower than either SE-SNe and SLSNe, and thus represent an interesting case of rare transitional events....",

keywords = "supernovae: general",

author = "Prentice, {S. J.} and C. Inserra and S. Schulze and M. Nicholl and Mazzali, {P. A.} and Vergani, {S. D.} and L. Galbany and Anderson, {J. P.} and C. Ashall and Chen, {T. W.} and M. Deckers and {Delgado Manche{\~n}o}, M. and {Gonz{\'a}lez D{\'i}az}, R. and S. Gonz{\'a}lez-Gait{\'a}n and M. Gromadzki and Guti{\'e}rrez, {C. P.} and L. Harvey and A. Kozyreva and Magee, {M. R.} and K. Maguire and M{\"u}ller-Bravo, {T. E.} and {Mu{\~n}oz Torres}, S. and Pessi, {P. J.} and J. Sollerman and J. Teffs and Terwel, {J. H.} and Young, {D. R.}",

year = "2021",

month = dec,

doi = "10.1093/mnras/stab2864",

language = "English",

volume = "508",

pages = "4342–4358",

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

issn = "0035-8711",

publisher = "SIPRI/Oxford University Press",

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Prentice, SJ, Inserra, C, Schulze, S, Nicholl, M, Mazzali, PA, Vergani, SD, Galbany, L, Anderson, JP, Ashall, C, Chen, TW, Deckers, M, Delgado Mancheño, M, González Díaz, R, González-Gaitán, S, Gromadzki, M, Gutiérrez, CP, Harvey, L, Kozyreva, A, Magee, MR, Maguire, K, Müller-Bravo, TE, Muñoz Torres, S, Pessi, PJ, Sollerman, J, Teffs, J, Terwel, JH & Young, DR 2021, 'Transitional events in the spectrophotometric regime between stripped envelope and superluminous supernovae', Monthly Notices of the Royal Astronomical Society, vol. 508, no. 3, pp. 4342–4358. https://doi.org/10.1093/mnras/stab2864

TY - JOUR

T1 - Transitional events in the spectrophotometric regime between stripped envelope and superluminous supernovae

AU - Prentice, S. J.

AU - Inserra, C.

AU - Schulze, S.

AU - Nicholl, M.

AU - Mazzali, P. A.

AU - Vergani, S. D.

AU - Galbany, L.

AU - Anderson, J. P.

AU - Ashall, C.

AU - Chen, T. W.

AU - Deckers, M.

AU - Delgado Mancheño, M.

AU - González Díaz, R.

AU - González-Gaitán, S.

AU - Gromadzki, M.

AU - Gutiérrez, C. P.

AU - Harvey, L.

AU - Kozyreva, A.

AU - Magee, M. R.

AU - Maguire, K.

AU - Müller-Bravo, T. E.

AU - Muñoz Torres, S.

AU - Pessi, P. J.

AU - Sollerman, J.

AU - Teffs, J.

AU - Terwel, J. H.

AU - Young, D. R.

PY - 2021/12

Y1 - 2021/12

N2 - The division between stripped-envelope supernovae (SE-SNe) and superluminous supernovae (SLSNe) is not well-defined in either photometric or spectroscopic space. While a sharp luminosity threshold has been suggested, there remains an increasing number of transitional objects that reach this threshold without the spectroscopic signatures common to SLSNe. In this work, we present data and analysis on four SNe transitional between SE-SNe and SLSNe; the He-poor SNe 2019dwa and 2019cri, and the He-rich SNe 2019hge and 2019unb. Each object displays long-lived and variable photometric evolution with luminosities around the SLSN threshold of Mr < -19.8 mag. Spectroscopically however, these objects are similar to SE-SNe, with line velocities lower than either SE-SNe and SLSNe, and thus represent an interesting case of rare transitional events....

AB - The division between stripped-envelope supernovae (SE-SNe) and superluminous supernovae (SLSNe) is not well-defined in either photometric or spectroscopic space. While a sharp luminosity threshold has been suggested, there remains an increasing number of transitional objects that reach this threshold without the spectroscopic signatures common to SLSNe. In this work, we present data and analysis on four SNe transitional between SE-SNe and SLSNe; the He-poor SNe 2019dwa and 2019cri, and the He-rich SNe 2019hge and 2019unb. Each object displays long-lived and variable photometric evolution with luminosities around the SLSN threshold of Mr < -19.8 mag. Spectroscopically however, these objects are similar to SE-SNe, with line velocities lower than either SE-SNe and SLSNe, and thus represent an interesting case of rare transitional events....

KW - supernovae: general

UR - http://www.scopus.com/inward/record.url?scp=85119471280&partnerID=8YFLogxK

U2 - 10.1093/mnras/stab2864

DO - 10.1093/mnras/stab2864

M3 - Article

SN - 0035-8711

VL - 508

SP - 4342

EP - 4358

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

Transitional events in the spectrophotometric regime between stripped envelope and superluminous supernovae

Abstract

Keywords

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