The Progenitor and Early Evolution of the Type IIb SN 2016gkg

L. Tartaglia; M. Fraser; D. J. Sand; S. Valenti; S. J. Smartt; C. McCully; J. P. Anderson; I. Arcavi; N. Elias-Rosa; L. Galbany; A. Gal-Yam; J. B.  Haislip; G. Hosseinzadeh; D. A. Howell; C. Inserra; S. W. Jha; E. Kankare; P. Lundqvist; K. Maguire; S. Mattila; D. Reichart; K. W. Smith; M. Smith; M. Stritzinger; M. Sullivan; F. Taddia; Lina Tomasella

doi:10.3847/2041-8213/aa5c7f

The Progenitor and Early Evolution of the Type IIb SN 2016gkg

L. Tartaglia, M. Fraser, D. J. Sand, S. Valenti, S. J. Smartt, C. McCully, J. P. Anderson, I. Arcavi, N. Elias-Rosa, L. Galbany, A. Gal-Yam, J. B. Haislip, G. Hosseinzadeh, D. A. Howell, C. Inserra, S. W. Jha, E. Kankare, P. Lundqvist, K. Maguire, S. MattilaD. Reichart, K. W. Smith, M. Smith, M. Stritzinger, M. Sullivan, F. Taddia, Lina Tomasella

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Abstract

We report initial observations and analysis on the Type IIb SN 2016gkg in the nearby galaxy NGC 613. SN 2016gkg exhibited a clear double-peaked light curve during its early evolution, as evidenced by our intensive photometric follow-up campaign. SN 2016gkg shows strong similarities with other Type IIb SNe, in particular, with respect to the He i emission features observed in both the optical and near-infrared. SN 2016gkg evolved faster than the prototypical Type IIb SN 1993J, with a decline similar to that of SN 2011dh after the first peak. The analysis of archival Hubble Space Telescope images indicate a pre-explosion source at SN 2016gkg’s position, suggesting a progenitor star with a ˜mid-F spectral type and initial mass 15{--}20 M {}⊙ , depending on the distance modulus adopted for NGC 613. Modeling the temperature evolution within 5 {days} of explosion, we obtain a progenitor radius of ˜ 48{--}124 R {}⊙ , smaller than that obtained from the analysis of the pre-explosion images (240{--}320 R {}⊙ ).

Original language	English
Article number	L12
Pages (from-to)	1-7
Journal	The Astrophysical Journal Letters
Volume	836
Issue number	1
DOIs	https://doi.org/10.3847/2041-8213/aa5c7f
Publication status	Published - 10 Feb 2017
Externally published	Yes

Keywords

supernovae: general
supernovae: individual: 2016gkg

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The Progenitor and Early Evolution of the Type IIb SN 2016gkg
© 2017. The American Astronomical Society. All rights reserved.This work is made available online in accordance with the publisher’s policies. Please refer to any applicable terms of use of the publisher.
Final published version, 2.03 MBLicence: Unspecified

http://adsabs.harvard.edu/abs/2017ApJ...836L..12T

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Tartaglia, L., Fraser, M., J. Sand, D., Valenti, S., Smartt, S. J., McCully, C., Anderson, J. P., Arcavi, I., Elias-Rosa, N., Galbany, L., Gal-Yam, A., Haislip, J. B., Hosseinzadeh, G., Howell, D. A., Inserra, C., Jha, S. W., Kankare, E., Lundqvist, P., Maguire, K., ... Tomasella, L. (2017). The Progenitor and Early Evolution of the Type IIb SN 2016gkg. The Astrophysical Journal Letters, 836(1), 1-7. Article L12 . https://doi.org/10.3847/2041-8213/aa5c7f

@article{99642ec544a84890930c97e2da17f170,

title = "The Progenitor and Early Evolution of the Type IIb SN 2016gkg",

abstract = "We report initial observations and analysis on the Type IIb SN 2016gkg in the nearby galaxy NGC 613. SN 2016gkg exhibited a clear double-peaked light curve during its early evolution, as evidenced by our intensive photometric follow-up campaign. SN 2016gkg shows strong similarities with other Type IIb SNe, in particular, with respect to the He i emission features observed in both the optical and near-infrared. SN 2016gkg evolved faster than the prototypical Type IIb SN 1993J, with a decline similar to that of SN 2011dh after the first peak. The analysis of archival Hubble Space Telescope images indicate a pre-explosion source at SN 2016gkg{\textquoteright}s position, suggesting a progenitor star with a ˜mid-F spectral type and initial mass 15{--}20 M {}⊙ , depending on the distance modulus adopted for NGC 613. Modeling the temperature evolution within 5 {days} of explosion, we obtain a progenitor radius of ˜ 48{--}124 R {}⊙ , smaller than that obtained from the analysis of the pre-explosion images (240{--}320 R {}⊙ ).",

keywords = "supernovae: general, supernovae: individual: 2016gkg",

author = "L. Tartaglia and M. Fraser and {J. Sand}, D. and S. Valenti and Smartt, {S. J.} and C. McCully and Anderson, {J. P.} and I. Arcavi and N. Elias-Rosa and L. Galbany and A. Gal-Yam and Haislip, {J. B.} and G. Hosseinzadeh and Howell, {D. A.} and C. Inserra and Jha, {S. W.} and E. Kankare and P. Lundqvist and K. Maguire and S. Mattila and D. Reichart and Smith, {K. W.} and M. Smith and M. Stritzinger and M. Sullivan and F. Taddia and Lina Tomasella",

year = "2017",

month = feb,

day = "10",

doi = "10.3847/2041-8213/aa5c7f",

language = "English",

volume = "836",

pages = "1--7",

journal = "The Astrophysical Journal Letters",

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Tartaglia, L, Fraser, M, J. Sand, D, Valenti, S, Smartt, SJ, McCully, C, Anderson, JP, Arcavi, I, Elias-Rosa, N, Galbany, L, Gal-Yam, A, Haislip, JB, Hosseinzadeh, G, Howell, DA, Inserra, C, Jha, SW, Kankare, E, Lundqvist, P, Maguire, K, Mattila, S, Reichart, D, Smith, KW, Smith, M, Stritzinger, M, Sullivan, M, Taddia, F & Tomasella, L 2017, 'The Progenitor and Early Evolution of the Type IIb SN 2016gkg', The Astrophysical Journal Letters, vol. 836, no. 1, L12 , pp. 1-7. https://doi.org/10.3847/2041-8213/aa5c7f

TY - JOUR

T1 - The Progenitor and Early Evolution of the Type IIb SN 2016gkg

AU - Tartaglia, L.

AU - Fraser, M.

AU - J. Sand, D.

AU - Valenti, S.

AU - Smartt, S. J.

AU - McCully, C.

AU - Anderson, J. P.

AU - Arcavi, I.

AU - Elias-Rosa, N.

AU - Galbany, L.

AU - Gal-Yam, A.

AU - Haislip, J. B.

AU - Hosseinzadeh, G.

AU - Howell, D. A.

AU - Inserra, C.

AU - Jha, S. W.

AU - Kankare, E.

AU - Lundqvist, P.

AU - Maguire, K.

AU - Mattila, S.

AU - Reichart, D.

AU - Smith, K. W.

AU - Smith, M.

AU - Stritzinger, M.

AU - Sullivan, M.

AU - Taddia, F.

AU - Tomasella, Lina

PY - 2017/2/10

Y1 - 2017/2/10

N2 - We report initial observations and analysis on the Type IIb SN 2016gkg in the nearby galaxy NGC 613. SN 2016gkg exhibited a clear double-peaked light curve during its early evolution, as evidenced by our intensive photometric follow-up campaign. SN 2016gkg shows strong similarities with other Type IIb SNe, in particular, with respect to the He i emission features observed in both the optical and near-infrared. SN 2016gkg evolved faster than the prototypical Type IIb SN 1993J, with a decline similar to that of SN 2011dh after the first peak. The analysis of archival Hubble Space Telescope images indicate a pre-explosion source at SN 2016gkg’s position, suggesting a progenitor star with a ˜mid-F spectral type and initial mass 15{--}20 M {}⊙ , depending on the distance modulus adopted for NGC 613. Modeling the temperature evolution within 5 {days} of explosion, we obtain a progenitor radius of ˜ 48{--}124 R {}⊙ , smaller than that obtained from the analysis of the pre-explosion images (240{--}320 R {}⊙ ).

AB - We report initial observations and analysis on the Type IIb SN 2016gkg in the nearby galaxy NGC 613. SN 2016gkg exhibited a clear double-peaked light curve during its early evolution, as evidenced by our intensive photometric follow-up campaign. SN 2016gkg shows strong similarities with other Type IIb SNe, in particular, with respect to the He i emission features observed in both the optical and near-infrared. SN 2016gkg evolved faster than the prototypical Type IIb SN 1993J, with a decline similar to that of SN 2011dh after the first peak. The analysis of archival Hubble Space Telescope images indicate a pre-explosion source at SN 2016gkg’s position, suggesting a progenitor star with a ˜mid-F spectral type and initial mass 15{--}20 M {}⊙ , depending on the distance modulus adopted for NGC 613. Modeling the temperature evolution within 5 {days} of explosion, we obtain a progenitor radius of ˜ 48{--}124 R {}⊙ , smaller than that obtained from the analysis of the pre-explosion images (240{--}320 R {}⊙ ).

KW - supernovae: general

KW - supernovae: individual: 2016gkg

U2 - 10.3847/2041-8213/aa5c7f

DO - 10.3847/2041-8213/aa5c7f

M3 - Article

SN - 2041-8213

VL - 836

SP - 1

EP - 7

JO - The Astrophysical Journal Letters

JF - The Astrophysical Journal Letters

IS - 1

M1 - L12

ER -

The Progenitor and Early Evolution of the Type IIb SN 2016gkg

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Keywords

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