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dc.contributor.author
Anderson, J. P.
dc.contributor.author
Pessi, Priscila Jael
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Dessart, L.
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Inserra, C.
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Hiramatsu, D.
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Taggart, K.
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Smartt, S. J.
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Leloudas, G.
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Chen, T. W.
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Möller, A.
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Roy, R.
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Schulze, S.
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Perley, D.
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Selsing, J.
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Prentice, S.J.
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Gal Yam, A.
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Angus, C.R.
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Arcavi, I.
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Ashall, C.
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Bulla, M.
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Bray, C.
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Burke, J.
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Callis, E.
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Cartier, R.
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Chang, S.-W.
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Chambers, K.
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Clark, P.
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Denneau, L.
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Dennefeld, M.
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Flewelling, H.
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Fraser, M.
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Galbany, L.
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Gromadzki, M.
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Gutiérrez, C. P.
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Heinze, A.
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Hosseinzadeh, G.
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Howell, D.A.
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Hsiao, E.Y.
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Kankare, E.
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Kostrzewa-Rutkowska, Z.
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Magnier, E.
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Maguire, K.
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Mazzali, P.
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McBrien, O.
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McCully, C.
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Morrell, Nidia Irene
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Lowe, T.B.
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Onken, C.A.
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Onori, F.
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Phillips, M.M.
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Rest, A.
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Ridden-Harper, R.
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Ruiter, A. J.
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Sand, D. J.
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Smith, K.W.
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Smith, M.
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Stalder, B.
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Stritzinger, M.D.
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Sullivan, M.
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Tonry, J.L.
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Tucker, B.E.
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Valenti, S.
dc.date.available
2020-04-01T14:28:34Z
dc.date.issued
2018-12
dc.identifier.citation
Anderson, J. P.; Pessi, Priscila Jael; Dessart, L.; Inserra, C.; Hiramatsu, D.; et al.; A nearby super-luminous supernova with a long pre-maximum & "plateau" and strong C II features; EDP Sciences; Astronomy and Astrophysics; 620; 12-2018
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/101464
dc.description.abstract
Context. Super-luminous supernovae (SLSNe) are rare events defined as being significantly more luminous than normal terminal stellar explosions. The source of the additional power needed to achieve such luminosities is still unclear. Discoveries in the local Universe (i.e. z < 0.1) are scarce, but afford dense multi-wavelength observations. Additional low-redshift objects are therefore extremely valuable. Aims. We present early-time observations of the type I SLSN ASASSN-18km/SN 2018bsz. These data are used to characterise the event and compare to literature SLSNe and spectral models. Host galaxy properties are also analysed. Methods. Optical and near-IR photometry and spectroscopy were analysed. Early-time ATLAS photometry was used to constrain the rising light curve. We identified a number of spectral features in optical-wavelength spectra and track their time evolution. Finally, we used archival host galaxy photometry together with Hâ? II region spectra to constrain the host environment. Results. ASASSN-18km/SN 2018bsz is found to be a type I SLSN in a galaxy at a redshift of 0.0267 (111 Mpc), making it the lowest-redshift event discovered to date. Strong C II lines are identified in the spectra. Spectral models produced by exploding a Wolf-Rayet progenitor and injecting a magnetar power source are shown to be qualitatively similar to ASASSN-18km/SN 2018bsz, contrary to most SLSNe-I that display weak or non-existent C II lines. ASASSN-18km/SN 2018bsz displays a long, slowly rising, red "plateau" of >26 days, before a steeper, faster rise to maximum. The host has an absolute magnitude of -19.8 mag (r), a mass of M* = 1.5-0.33 +0.08 × 109 Mâ??, and a star formation rate of = 0.50-0.19 +2.22 Mâ?? yr-1. A nearby Hâ? II region has an oxygen abundance (O3N2) of 8.31 ± 0.01 dex.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
SUPERNOVAE: GENERAL
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SUPERNOVAE: INDIVIDUAL: ASASSN-18KM
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SUPERNOVAE: INDIVIDUAL: SN 2018BSZ
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Astronomía
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dc.subject.classification
Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
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dc.title
A nearby super-luminous supernova with a long pre-maximum & "plateau" and strong C II features
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-02-10T14:02:48Z
dc.journal.volume
620
dc.journal.pais
Francia
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Fil: Anderson, J. P.. European Southern Observatory Santiago; Chile
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Fil: Pessi, Priscila Jael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
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Fil: Dessart, L.. Universidad de Chile; Chile
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Fil: Inserra, C.. University of Southampton; Reino Unido
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Fil: Hiramatsu, D.. University of California; Estados Unidos
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Fil: Taggart, K.. Liverpool John Moores University; Estados Unidos
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Fil: Smartt, S. J.. The Queens University of Belfast; Irlanda
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Fil: Leloudas, G.. University of Copenhagen; Dinamarca
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Fil: Chen, T. W.. Max-planck-institut Für Extraterrestrische Physik; Alemania
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Fil: Möller, A.. Arc Centre Of Excellence For All-sky Astrophysics (caastro); Australia. Australian National University; Australia
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Fil: Roy, R.. Inter-university Centre For Astronomy And Astrophysics India; India
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Fil: Schulze, S.. Weizmann Institute Of Science Israel; Israel
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Fil: Perley, D.. Liverpool John Moores University; Estados Unidos
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Fil: Selsing, J.. Niels Bohr Institute; Dinamarca
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Fil: Prentice, S.J.. The Queens University of Belfast; Irlanda
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Fil: Gal Yam, A.. Weizmann Institute Of Science Israel; Israel
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Fil: Angus, C.R.. University of Southampton; Reino Unido
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Fil: Arcavi, I.. University of California; Estados Unidos
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Fil: Ashall, C.. Florida State University; Estados Unidos
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Fil: Bulla, M.. Stockholms Universitet; Suecia
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Fil: Bray, C.. Australian National University; Australia
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Fil: Burke, J.. University of California; Estados Unidos
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Fil: Callis, E.. University College Dublin;
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Fil: Cartier, R.. Cerro Tololo Inter American Observatory; Chile
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Fil: Chang, S.-W.. Arc Centre Of Excellence For All-sky Astrophysics (caastro); Australia. Australian National University; Australia
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Fil: Chambers, K.. University of Hawaii at Manoa; Estados Unidos
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Fil: Clark, P.. The Queens University of Belfast; Irlanda
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Fil: Denneau, L.. University of Hawaii at Manoa; Estados Unidos
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Fil: Dennefeld, M.. Institut D 'astrophysique de Paris; Francia
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Fil: Flewelling, H.. University of Hawaii at Manoa; Estados Unidos
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Fil: Fraser, M.. University College Dublin; Irlanda
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Fil: Galbany, L.. University of Pittsburgh; Estados Unidos. University of Pittsburgh at Johnstown; Estados Unidos
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Fil: Gromadzki, M.. Warsaw University Astronomical Observatory; Polonia
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Fil: Gutiérrez, C. P.. University of Southampton; Reino Unido
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Fil: Heinze, A.. University of Hawaii at Manoa; Estados Unidos
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Fil: Hosseinzadeh, G.. University Of California, Santa Barbara; . Las Cumbres Observatory Global Telescope Network, Inc;
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Fil: Howell, D.A.. Las Cumbres Observatory Global Telescope Network, Inc; . University Of California, Santa Barbara;
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Fil: Hsiao, E.Y.. Florida State University; Estados Unidos
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Fil: Kankare, E.. The Queens University of Belfast; Irlanda
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Fil: Kostrzewa-Rutkowska, Z.. Radboud Universiteit Nijmegen; Países Bajos
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Fil: Magnier, E.. University of Hawaii at Manoa; Estados Unidos
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Fil: Maguire, K.. The Queens University of Belfast; Irlanda
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Fil: Mazzali, P.. Las Campanas Observatory; Chile
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Fil: McBrien, O.. The Queens University of Belfast; Irlanda
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Fil: McCully, C.. University of California; Estados Unidos
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Fil: Morrell, Nidia Irene. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania
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Fil: Lowe, T.B.. University of Hawaii at Manoa; Estados Unidos
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Fil: Onken, C.A.. Australian National University; Australia
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Fil: Onori, F.. Radboud Universiteit Nijmegen; Países Bajos
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Fil: Phillips, M.M.. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania
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Fil: Rest, A.. University Johns Hopkins; Estados Unidos. Space Telescope Science Institute; Estados Unidos
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Fil: Ridden-Harper, R.. Australian National University; Australia
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Fil: Ruiter, A. J.. Arc Future Fellow; Australia. Australian National University, Mount Stromlo Observatory; Australia
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Fil: Sand, D. J.. University of Arizona; Estados Unidos
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Fil: Smith, K.W.. The Queens University of Belfast; Irlanda
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Fil: Smith, M.. University of Southampton; Reino Unido
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Fil: Stalder, B.. Large Synoptic Survey Telescope; Estados Unidos
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Fil: Stritzinger, M.D.. University Aarhus; Dinamarca
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Fil: Sullivan, M.. University of Southampton; Reino Unido
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Fil: Tonry, J.L.. University of Hawaii at Manoa; Estados Unidos
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Fil: Tucker, B.E.. Australian National University, Mount Stromlo Observatory; Australia
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Fil: Valenti, S.. University of California; Estados Unidos
dc.journal.title
Astronomy and Astrophysics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/pdf/2018/12/aa33725-18.pdf
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/201833725
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