The Type II-P Supernova 2017eaw: From Explosion to the Nebular Phase

Tamás Szalai; József Vinkó; Réka Könyves-Tóth; Andrea P. Nagy; K. Azalee Bostroem; Krisztián Sárneczky; Peter J. Brown; Ondrej Pejcha; Attila Bódi; Borbála Cseh; Géza Csörnyei; Zoltán Dencs; Ottó Hanyecz; Bernadett Ignácz; Csilla Kalup; Levente Kriskovics; András Ordasi; András Pál; Bálint Seli; Ádám Sódor; Róbert Szakáts; Krisztián Vida; Gabriella Zsidi; Iair Arcavi; Chris Ashall; Jamison Burke; Lluís Galbany; Daichi Hiramatsu; Griffin Hosseinzadeh; Eric Y. Hsiao; D. Andrew Howell; Curtis McCully; Shane Moran; Jeonghee Rho; David J. Sand; Melissa Shahbandeh; Stefano Valenti; Xiaofeng Wang; J. Craig Wheeler

doi:10.3847/1538-4357/ab12d0

The Type II-P Supernova 2017eaw: From Explosion to the Nebular Phase

Tamás Szalai, József Vinkó, Réka Könyves-Tóth, Andrea P. Nagy, K. Azalee Bostroem, Krisztián Sárneczky, Peter J. Brown, Ondrej Pejcha, Attila Bódi, Borbála Cseh, Géza Csörnyei, Zoltán Dencs, Ottó Hanyecz, Bernadett Ignácz, Csilla Kalup, Levente Kriskovics, András Ordasi, András Pál, Bálint Seli, Ádám SódorRóbert Szakáts, Krisztián Vida, Gabriella Zsidi, Iair Arcavi, Chris Ashall, Jamison Burke, Lluís Galbany, Daichi Hiramatsu, Griffin Hosseinzadeh, Eric Y. Hsiao, D. Andrew Howell, Curtis McCully, Shane Moran, Jeonghee Rho, David J. Sand, Melissa Shahbandeh, Stefano Valenti, Xiaofeng Wang, J. Craig Wheeler

Astronomy

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Abstract

The nearby SN 2017eaw is a Type II-P ("plateau") supernova (SN) showing early-time, moderate CSM interaction. We present a comprehensive study of this SN, including the analysis of high-quality optical photometry and spectroscopy covering the very early epochs up to the nebular phase, as well as near-ultraviolet and near-infrared spectra and early-time X-ray and radio data. The combined data of SNe 2017eaw and 2004et allow us to get an improved distance to the host galaxy, NGC 6946, of D ∼ 6.85 ± 0.63 Mpc; this fits into recent independent results on the distance of the host and disfavors the previously derived (30% shorter) distances based on SN 2004et. From modeling the nebular spectra and the quasi-bolometric light curve, we estimate the progenitor mass and some basic physical parameters for the explosion and ejecta. Our results agree well with previous reports on a red supergiant progenitor star with a mass of ∼15-16 M _o. Our estimation of the pre-explosion mass-loss rate ( yr^-1) agrees well with previous results based on the opacity of the dust shell enshrouding the progenitor, but it is orders of magnitude lower than previous estimates based on general light-curve modeling of Type II-P SNe. Combining late-time optical and mid-infrared data, a clear excess at 4.5 μm can be seen, supporting the previous statements on the (moderate) dust formation in the vicinity of SN 2017eaw.

Original language	English (US)
Article number	19
Journal	Astrophysical Journal
Volume	876
Issue number	1
DOIs	https://doi.org/10.3847/1538-4357/ab12d0
State	Published - May 1 2019

Keywords

supernovae: general
supernovae: individual (SN 2017eaw)

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-4357/ab12d0

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Szalai, T., Vinkó, J., Könyves-Tóth, R., Nagy, A. P., Bostroem, K. A., Sárneczky, K., Brown, P. J., Pejcha, O., Bódi, A., Cseh, B., Csörnyei, G., Dencs, Z., Hanyecz, O., Ignácz, B., Kalup, C., Kriskovics, L., Ordasi, A., Pál, A., Seli, B., ... Wheeler, J. C. (2019). The Type II-P Supernova 2017eaw: From Explosion to the Nebular Phase. Astrophysical Journal, 876(1), Article 19. https://doi.org/10.3847/1538-4357/ab12d0

Szalai, T, Vinkó, J, Könyves-Tóth, R, Nagy, AP, Bostroem, KA, Sárneczky, K, Brown, PJ, Pejcha, O, Bódi, A, Cseh, B, Csörnyei, G, Dencs, Z, Hanyecz, O, Ignácz, B, Kalup, C, Kriskovics, L, Ordasi, A, Pál, A, Seli, B, Sódor, Á, Szakáts, R, Vida, K, Zsidi, G, Arcavi, I, Ashall, C, Burke, J, Galbany, L, Hiramatsu, D, Hosseinzadeh, G, Hsiao, EY, Howell, DA, McCully, C, Moran, S, Rho, J, Sand, DJ, Shahbandeh, M, Valenti, S, Wang, X & Wheeler, JC 2019, 'The Type II-P Supernova 2017eaw: From Explosion to the Nebular Phase', Astrophysical Journal, vol. 876, no. 1, 19. https://doi.org/10.3847/1538-4357/ab12d0

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abstract = "The nearby SN 2017eaw is a Type II-P ({"}plateau{"}) supernova (SN) showing early-time, moderate CSM interaction. We present a comprehensive study of this SN, including the analysis of high-quality optical photometry and spectroscopy covering the very early epochs up to the nebular phase, as well as near-ultraviolet and near-infrared spectra and early-time X-ray and radio data. The combined data of SNe 2017eaw and 2004et allow us to get an improved distance to the host galaxy, NGC 6946, of D ∼ 6.85 ± 0.63 Mpc; this fits into recent independent results on the distance of the host and disfavors the previously derived (30% shorter) distances based on SN 2004et. From modeling the nebular spectra and the quasi-bolometric light curve, we estimate the progenitor mass and some basic physical parameters for the explosion and ejecta. Our results agree well with previous reports on a red supergiant progenitor star with a mass of ∼15-16 M o. Our estimation of the pre-explosion mass-loss rate ( yr-1) agrees well with previous results based on the opacity of the dust shell enshrouding the progenitor, but it is orders of magnitude lower than previous estimates based on general light-curve modeling of Type II-P SNe. Combining late-time optical and mid-infrared data, a clear excess at 4.5 μm can be seen, supporting the previous statements on the (moderate) dust formation in the vicinity of SN 2017eaw.",

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author = "Tam{\'a}s Szalai and J{\'o}zsef Vink{\'o} and R{\'e}ka K{\"o}nyves-T{\'o}th and Nagy, {Andrea P.} and Bostroem, {K. Azalee} and Kriszti{\'a}n S{\'a}rneczky and Brown, {Peter J.} and Ondrej Pejcha and Attila B{\'o}di and Borb{\'a}la Cseh and G{\'e}za Cs{\"o}rnyei and Zolt{\'a}n Dencs and Ott{\'o} Hanyecz and Bernadett Ign{\'a}cz and Csilla Kalup and Levente Kriskovics and Andr{\'a}s Ordasi and Andr{\'a}s P{\'a}l and B{\'a}lint Seli and {\'A}d{\'a}m S{\'o}dor and R{\'o}bert Szak{\'a}ts and Kriszti{\'a}n Vida and Gabriella Zsidi and Iair Arcavi and Chris Ashall and Jamison Burke and Llu{\'i}s Galbany and Daichi Hiramatsu and Griffin Hosseinzadeh and Hsiao, {Eric Y.} and Howell, {D. Andrew} and Curtis McCully and Shane Moran and Jeonghee Rho and Sand, {David J.} and Melissa Shahbandeh and Stefano Valenti and Xiaofeng Wang and Wheeler, {J. Craig}",

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doi = "10.3847/1538-4357/ab12d0",

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T1 - The Type II-P Supernova 2017eaw

T2 - From Explosion to the Nebular Phase

AU - Szalai, Tamás

AU - Vinkó, József

AU - Könyves-Tóth, Réka

AU - Nagy, Andrea P.

AU - Bostroem, K. Azalee

AU - Sárneczky, Krisztián

AU - Brown, Peter J.

AU - Pejcha, Ondrej

AU - Bódi, Attila

AU - Cseh, Borbála

AU - Csörnyei, Géza

AU - Dencs, Zoltán

AU - Hanyecz, Ottó

AU - Ignácz, Bernadett

AU - Kalup, Csilla

AU - Kriskovics, Levente

AU - Ordasi, András

AU - Pál, András

AU - Seli, Bálint

AU - Sódor, Ádám

AU - Szakáts, Róbert

AU - Vida, Krisztián

AU - Zsidi, Gabriella

AU - Arcavi, Iair

AU - Ashall, Chris

AU - Burke, Jamison

AU - Galbany, Lluís

AU - Hiramatsu, Daichi

AU - Hosseinzadeh, Griffin

AU - Hsiao, Eric Y.

AU - Howell, D. Andrew

AU - McCully, Curtis

AU - Moran, Shane

AU - Rho, Jeonghee

AU - Sand, David J.

AU - Shahbandeh, Melissa

AU - Valenti, Stefano

AU - Wang, Xiaofeng

AU - Wheeler, J. Craig

PY - 2019/5/1

Y1 - 2019/5/1

N2 - The nearby SN 2017eaw is a Type II-P ("plateau") supernova (SN) showing early-time, moderate CSM interaction. We present a comprehensive study of this SN, including the analysis of high-quality optical photometry and spectroscopy covering the very early epochs up to the nebular phase, as well as near-ultraviolet and near-infrared spectra and early-time X-ray and radio data. The combined data of SNe 2017eaw and 2004et allow us to get an improved distance to the host galaxy, NGC 6946, of D ∼ 6.85 ± 0.63 Mpc; this fits into recent independent results on the distance of the host and disfavors the previously derived (30% shorter) distances based on SN 2004et. From modeling the nebular spectra and the quasi-bolometric light curve, we estimate the progenitor mass and some basic physical parameters for the explosion and ejecta. Our results agree well with previous reports on a red supergiant progenitor star with a mass of ∼15-16 M o. Our estimation of the pre-explosion mass-loss rate ( yr-1) agrees well with previous results based on the opacity of the dust shell enshrouding the progenitor, but it is orders of magnitude lower than previous estimates based on general light-curve modeling of Type II-P SNe. Combining late-time optical and mid-infrared data, a clear excess at 4.5 μm can be seen, supporting the previous statements on the (moderate) dust formation in the vicinity of SN 2017eaw.

AB - The nearby SN 2017eaw is a Type II-P ("plateau") supernova (SN) showing early-time, moderate CSM interaction. We present a comprehensive study of this SN, including the analysis of high-quality optical photometry and spectroscopy covering the very early epochs up to the nebular phase, as well as near-ultraviolet and near-infrared spectra and early-time X-ray and radio data. The combined data of SNe 2017eaw and 2004et allow us to get an improved distance to the host galaxy, NGC 6946, of D ∼ 6.85 ± 0.63 Mpc; this fits into recent independent results on the distance of the host and disfavors the previously derived (30% shorter) distances based on SN 2004et. From modeling the nebular spectra and the quasi-bolometric light curve, we estimate the progenitor mass and some basic physical parameters for the explosion and ejecta. Our results agree well with previous reports on a red supergiant progenitor star with a mass of ∼15-16 M o. Our estimation of the pre-explosion mass-loss rate ( yr-1) agrees well with previous results based on the opacity of the dust shell enshrouding the progenitor, but it is orders of magnitude lower than previous estimates based on general light-curve modeling of Type II-P SNe. Combining late-time optical and mid-infrared data, a clear excess at 4.5 μm can be seen, supporting the previous statements on the (moderate) dust formation in the vicinity of SN 2017eaw.

KW - supernovae: general

KW - supernovae: individual (SN 2017eaw)

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DO - 10.3847/1538-4357/ab12d0

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VL - 876

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 19

ER -

The Type II-P Supernova 2017eaw: From Explosion to the Nebular Phase

Abstract

Keywords

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