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; L. 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. Mattila

D. Reichart, K. W. Smith, M. Smith, M. Stritzinger, M. Sullivan, F. Taddia, L. Tomasella

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

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 Ṁ, depending on the distance modulus adopted for NGC 613. Modeling the temperature evolution within of explosion, we obtain a progenitor radius of R, smaller than that obtained from the analysis of the pre-explosion images (240-320 R ).

Original language	English (US)
Article number	L12
Journal	Astrophysical Journal Letters
Volume	836
Issue number	1
DOIs	https://doi.org/10.3847/2041-8213/aa5c7f
State	Published - Feb 10 2017
Externally published	Yes

Keywords

supernovae: general
supernovae: individual (2016gkg)

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/2041-8213/aa5c7f

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Tartaglia, L., Fraser, M., Sand, D. J., 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. Astrophysical Journal Letters, 836(1), Article L12. https://doi.org/10.3847/2041-8213/aa5c7f

Tartaglia, L, Fraser, M, Sand, DJ, 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', Astrophysical Journal Letters, vol. 836, no. 1, L12. https://doi.org/10.3847/2041-8213/aa5c7f

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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 Ṁ, depending on the distance modulus adopted for NGC 613. Modeling the temperature evolution within of explosion, we obtain a progenitor radius of 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 Sand, \{D. J.\} 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 L. Tomasella",

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

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

AU - Tartaglia, L.

AU - Fraser, M.

AU - Sand, D. J.

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, L.

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 Ṁ, depending on the distance modulus adopted for NGC 613. Modeling the temperature evolution within of explosion, we obtain a progenitor radius of 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 Ṁ, depending on the distance modulus adopted for NGC 613. Modeling the temperature evolution within of explosion, we obtain a progenitor radius of R, smaller than that obtained from the analysis of the pre-explosion images (240-320 R ).

KW - supernovae: general

KW - supernovae: individual (2016gkg)

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JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

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M1 - L12

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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