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The Progenitor and Early Evolution of the Type IIb SN 2016gkg
- Tartaglia, L. (author)
- Fraser, M. (author)
- Sand, D. J. (author)
- show more...
- Valenti, S. (author)
- Smartt, S. J. (author)
- McCully, C. (author)
- Anderson, J. P. (author)
- Arcavi, I. (author)
- Elias-Rosa, N. (author)
- Galbany, L. (author)
- Gal-Yam, A. (author)
- Haislip, J. B. (author)
- Hosseinzadeh, G. (author)
- Howell, D. A. (author)
- Inserra, C. (author)
- Jha, S. W. (author)
- Kankare, E. (author)
- Maguire, K. (author)
- Mattila, S. (author)
- Reichart, D. (author)
- Smith, K. W. (author)
- Smith, M. (author)
- Stritzinger, M. (author)
- Sullivan, M. (author)
- Tomasella, L. (author)
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- (creator_code:org_t)
- 2017-02-10
- 2017
- English.
- In: Astrophysical Journal Letters. - : American Astronomical Society. - 2041-8205 .- 2041-8213. ; 836:1
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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 similar to mid-F spectral type and initial mass 15-20 M-circle dot, depending on the distance modulus adopted for NGC. 613. Modeling the temperature evolution within 5 days of explosion, we obtain a progenitor radius of similar to 48-124 R-circle dot, smaller than that obtained from the analysis of the pre-explosion images (240-320 R-circle dot).
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- supernovae: general
- supernovae: individual (2016gkg)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Tartaglia, L.
- Fraser, M.
- Sand, D. J.
- Valenti, S.
- Smartt, S. J.
- McCully, C.
- show more...
- 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, Peter
- Maguire, K.
- Mattila, S.
- Reichart, D.
- Smith, K. W.
- Smith, M.
- Stritzinger, M.
- Sullivan, M.
- Taddia, Francesc ...
- Tomasella, L.
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