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SN 2017gmr : An Energetic Type II-P Supernova with Asymmetries
- Andrews, Jennifer E. (author)
- Sand, D. J. (author)
- Valenti, S. (author)
- show more...
- Smith, Nathan (author)
- Dastidar, Raya (author)
- Sahu, D. K. (author)
- Misra, Kuntal (author)
- Singh, Avinash (author)
- Hiramatsu, D. (author)
- Brown, P. J. (author)
- Hosseinzadeh, G. (author)
- Wyatt, S. (author)
- Vinko, J. (author)
- Anupama, G. C. (author)
- Arcavi, I. (author)
- Ashall, Chris (author)
- Benetti, S. (author)
- Berton, Marco (author)
- Bostroem, K. A. (author)
- Burke, J. (author)
- Chen, S. (author)
- Chomiuk, L. (author)
- Cikota, A. (author)
- Congiu, E. (author)
- Cseh, B. (author)
- Davis, Scott (author)
- Elias-Rosa, N. (author)
- Faran, T. (author)
- Fraser, Morgan (author)
- Galbany, L. (author)
- Gall, C. (author)
- Gal-Yam, A. (author)
- Gangopadhyay, Anjasha (author)
- Gromadzki, M. (author)
- Haislip, J. (author)
- Howell, D. A. (author)
- Hsiao, E. Y. (author)
- Inserra, C. (author)
- Kankare, E. (author)
- Kuncarayakti, H. (author)
- Kouprianov, V. (author)
- Kumar, Brajesh (author)
- Li, Xue (author)
- Lin, Han (author)
- Maguire, K. (author)
- Mazzali, P. (author)
- McCully, C. (author)
- Milne, P. (author)
- Mo, Jun (author)
- Morrell, N. (author)
- Nicholl, M. (author)
- Ochner, P. (author)
- Olivares, F. (author)
- Pastorello, A. (author)
- Patat, F. (author)
- Phillips, M. (author)
- Pignata, G. (author)
- Prentice, S. (author)
- Reguitti, A. (author)
- Reichart, D. E. (author)
- Rodriguez, O. (author)
- Rui, Liming (author)
- Sanwal, Pankaj (author)
- Sarneczky, K. (author)
- Shahbandeh, M. (author)
- Singh, Mridweeka (author)
- Smartt, S. (author)
- Strader, J. (author)
- Stritzinger, M. D. (author)
- Szakats, R. (author)
- Wang, Huijuan (author)
- Wang, Lingzhi (author)
- Wang, Xiaofeng (author)
- Wheeler, J. C. (author)
- Xiang, Danfeng (author)
- Yaron, O. (author)
- Young, D. R. (author)
- Zhang, Junbo (author)
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- (creator_code:org_t)
- 2019-11-01
- 2019
- English.
- In: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 885:1
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- We present high-cadence UV, optical, and near-infrared data on the luminous Type II-P supernova SN;2017gmr from hours after discovery through the first 180 days. SN;2017gmr does not show signs of narrow, high-ionization emission lines in the early optical spectra, yet the optical light-curve evolution suggests that an extra energy source from circumstellar medium (CSM) interaction must be present for at least 2 days after explosion. Modeling of the early light curve indicates a ?500 R progenitor radius, consistent with a rather compact red supergiant, and late-time luminosities indicate that up to 0.130;;0.026 M of Ni-56 are present, if the light curve is solely powered by radioactive decay, although the Ni-56 mass may be lower if CSM interaction contributes to the post-plateau luminosity. Prominent multipeaked emission lines of H? and [O i] emerge after day 154, as a result of either an asymmetric explosion or asymmetries in the CSM. The lack of narrow lines within the first 2 days of explosion in the likely presence of CSM interaction may be an example of close, dense, asymmetric CSM that is quickly enveloped by the spherical supernova ejecta.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Type II supernovae
- Core-collapse supernovae
- Massive stars
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
- Andrews, Jennife ...
- Sand, D. J.
- Valenti, S.
- Smith, Nathan
- Dastidar, Raya
- Sahu, D. K.
- show more...
- Misra, Kuntal
- Singh, Avinash
- Hiramatsu, D.
- Brown, P. J.
- Hosseinzadeh, G.
- Wyatt, S.
- Vinko, J.
- Anupama, G. C.
- Arcavi, I.
- Ashall, Chris
- Benetti, S.
- Berton, Marco
- Bostroem, K. A.
- Bulla, Mattia
- Burke, J.
- Chen, S.
- Chomiuk, L.
- Cikota, A.
- Congiu, E.
- Cseh, B.
- Davis, Scott
- Elias-Rosa, N.
- Faran, T.
- Fraser, Morgan
- Galbany, L.
- Gall, C.
- Gal-Yam, A.
- Gangopadhyay, An ...
- Gromadzki, M.
- Haislip, J.
- Howell, D. A.
- Hsiao, E. Y.
- Inserra, C.
- Kankare, E.
- Kuncarayakti, H.
- Kouprianov, V.
- Kumar, Brajesh
- Li, Xue
- Lin, Han
- Maguire, K.
- Mazzali, P.
- McCully, C.
- Milne, P.
- Mo, Jun
- Morrell, N.
- Nicholl, M.
- Ochner, P.
- Olivares, F.
- Pastorello, A.
- Patat, F.
- Phillips, M.
- Pignata, G.
- Prentice, S.
- Reguitti, A.
- Reichart, D. E.
- Rodriguez, O.
- Rui, Liming
- Sanwal, Pankaj
- Sarneczky, K.
- Shahbandeh, M.
- Singh, Mridweeka
- Smartt, S.
- Strader, J.
- Stritzinger, M. ...
- Szakats, R.
- Tartaglia, Leona ...
- Wang, Huijuan
- Wang, Lingzhi
- Wang, Xiaofeng
- Wheeler, J. C.
- Xiang, Danfeng
- Yaron, O.
- Young, D. R.
- Zhang, Junbo
- show less...
- About the subject
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- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
- Articles in the publication
- Astrophysical Jo ...
- By the university
- Stockholm University
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