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A long life of exce...
A long life of excess : The interacting transient SN 2017hcc
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Moran, S. (author)
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Fraser, M. (author)
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Kotak, R. (author)
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Pastorello, A. (author)
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Benetti, S. (author)
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Brennan, S. J. (author)
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Gutiérrez, C. P. (author)
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Kankare, E. (author)
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Kuncarayakti, H. (author)
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Mattila, S. (author)
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Reynolds, T. M. (author)
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Anderson, J. P. (author)
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Brown, P. J. (author)
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Campana, S. (author)
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Chambers, K. C. (author)
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- Chen, Ting-Wan (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Della Valle, M. (author)
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Dennefeld, M. (author)
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Elias-Rosa, N. (author)
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Galbany, L. (author)
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Galindo-Guil, F. J. (author)
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Gromadzki, M. (author)
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Hiramatsu, D. (author)
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Inserra, C. (author)
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Leloudas, G. (author)
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Müller-Bravo, T. E. (author)
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Nicholl, M. (author)
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Reguitti, A. (author)
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Shahbandeh, M. (author)
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Smartt, S. J. (author)
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Tartaglia, L. (author)
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Young, D. R. (author)
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(creator_code:org_t)
- 2023-01-05
- 2023
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 669
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- In this study we present the results of a five-year follow-up campaign of the long-lived type IIn supernova SN 2017hcc, found in a spiral dwarf host of near-solar metallicity. The long rise time (57 ± 2 days, ATLAS o band) and high luminosity (peaking at −20.78 ± 0.01 mag in the ATLAS o band) point towards an interaction of massive ejecta with massive and dense circumstellar material (CSM). The evolution of SN 2017hcc is slow, both spectroscopically and photometrically, reminiscent of the long-lived type IIn, SN 2010jl. An infrared (IR) excess was apparent soon after the peak, and blueshifts were noticeable in the Balmer lines starting from a few hundred days, but appeared to be fading by around +1200 d. We posit that an IR light echo from pre-existing dust dominates at early times, with some possible condensation of new dust grains occurring at epochs ≳+800 d.
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: SN 2017hcc
- supernovae: individual: ATLAS17lsn
- supernovae: individual: PS17fra
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Moran, S.
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Fraser, M.
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Kotak, R.
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Pastorello, A.
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Benetti, S.
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Brennan, S. J.
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show more...
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Gutiérrez, C. P.
-
Kankare, E.
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Kuncarayakti, H.
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Mattila, S.
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Reynolds, T. M.
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Anderson, J. P.
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Brown, P. J.
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Campana, S.
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Chambers, K. C.
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Chen, Ting-Wan
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Della Valle, M.
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Dennefeld, M.
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Elias-Rosa, N.
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Galbany, L.
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Galindo-Guil, F. ...
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Gromadzki, M.
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Hiramatsu, D.
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Inserra, C.
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Leloudas, G.
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Müller-Bravo, T. ...
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Nicholl, M.
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Reguitti, A.
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Shahbandeh, M.
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Smartt, S. J.
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Tartaglia, L.
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Young, D. R.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astronomy and As ...
- By the university
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Stockholm University