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  • Amanullah, RahmanStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm University (author)

Diversity in extinction laws of Type Ia supernovae measured between 0.2 and 2 μm

  • Article/chapterEnglish2015

Publisher, publication year, extent ...

  • 2015-09-07
  • Oxford University Press (OUP),2015
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-123790
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-123790URI
  • https://doi.org/10.1093/mnras/stv1505DOI
  • https://research.chalmers.se/publication/225725URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • We present ultraviolet (UV) observations of six nearby Type Ia supernovae (SNe Ia) obtained with the Hubble Space Telescope, three of which were also observed in the near-IR (NIR) with Wide-Field Camera 3. UV observations with the Swift satellite, as well as ground-based optical and NIR data provide complementary information. The combined data set covers the wavelength range 0.2-2 mu m. By also including archival data of SN 2014J, we analyse a sample spanning observed colour excesses up to E(B - V) = 1.4 mag. We study the wavelength-dependent extinction of each individual SN and find a diversity of reddening laws when characterized by the total-to-selective extinction R-V. In particular, we note that for the two SNe with E(B - V) greater than or similar to 1 mag, for which the colour excess is dominated by dust extinction, we find R-V = 1.4 +/- 0.1 and R-V = 2.8 +/- 0.1. Adding UV photometry reduces the uncertainty of fitted R-V by similar to 50 per cent allowing us to also measure R-V of individual low-extinction objects which point to a similar diversity, currently not accounted for in the analyses when SNe Ia are used for studying the expansion history of the Universe.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Johansson, JoelStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm University,Texas A and M University,Niels Bohr Institute,Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA),Universidad del Pais Vasco / Euskal Herriko Unibertsitatea,University of the Basque Country (UPV/EHU)(Swepub:su)joeljo (author)
  • Goobar, ArielStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm University(Swepub:su)ariel (author)
  • Ferretti, RaphaelStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm University(Swepub:su)rferr (author)
  • Papadogiannakis, SeméliStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm University(Swepub:su)sepap (author)
  • Petrushevska, TanjaStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm University(Swepub:su)tpetr (author)
  • Brown, P. J. (author)
  • Cao, Y.California Institute of Technology (Caltech) (author)
  • Contreras, C.Las Campanas Observatory (author)
  • Dahle, H.Universitetet i Oslo,University of Oslo,Las Cumbres Observatory Global Telescope Network, Inc,University of California (author)
  • Elias-Rosa, N.Istituto nazionale di astrofisica (INAF) (author)
  • Fynbo, J. P. U. (author)
  • Gorosabel, J. (author)
  • Guaita, L.Osservatorio Astronomico di Roma,Niels Bohr Institute,Weizmann Institute of Science (author)
  • Hangard, LauraStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm University(Swepub:su)lhang (author)
  • Howell, D. A. (author)
  • Hsiao, E. Y.Las Campanas Observatory,Århus Universitet,Aarhus University (author)
  • Kankare, E.Queen's University Belfast (author)
  • Kasliwal, M.Carnegie Observatories (author)
  • Leloudas, G. (author)
  • Lundqvist, PeterStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm University(Swepub:su)lundq (author)
  • Mattila, S.Turun Yliopisto,University of Turku,University of Southampton (author)
  • Nugent, P.University of California,Lawrence Berkeley National Laboratory (author)
  • Phillips, M. M.California Institute of Technology (Caltech) (author)
  • Sandberg, AndreasStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm University(Swepub:su)ansa2525 (author)
  • Stanishev, V.Instituto Superior Tecnico (author)
  • Sullivan, M. (author)
  • Taddia, FrancescoStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm University(Swepub:su)ftadd (author)
  • Östlin, GöranStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm University(Swepub:su)ostlin (author)
  • Asadi, SagharStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),Stockholm University(Swepub:su)saas9842 (author)
  • Herrero-Illana, R.Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Jensen, J. J. (author)
  • Karhunen, K. (author)
  • Lazarevic, S.Univerzitet u Beogradu,University of Belgrade (author)
  • Varenius, Eskil,1986Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)varenius (author)
  • Santos, P.Universitetet i Oslo,University of Oslo (author)
  • Sridhar, S. SeethapuramNetherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen (author)
  • Wallström, Sofia,1988Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)wallstrs (author)
  • Wiegert, Joachim,1985Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)wiegert (author)
  • Stockholms universitetFysikum (creator_code:org_t)

Related titles

  • In:Monthly notices of the Royal Astronomical Society: Oxford University Press (OUP)453:3, s. 3300-33280035-87111365-2966

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