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Multi-wavelength Observations of the Enduring Type IIn Supernovae 2005ip and 2006jd
Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
Stockholm University, Faculty of Science, Department of Astronomy.
Stockholm University, Faculty of Science, Department of Astronomy.
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2012 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 756, no 2, 173- p.Article in journal (Refereed) Published
Abstract [en]

We present an observational study of the Type IIn supernovae (SNe IIn) 2005ip and 2006jd. Broadband UV, optical, and near-IR photometry, and visual-wavelength spectroscopy of SN 2005ip complement and extend upon published observations to 6.5 years past discovery. Our observations of SN 2006jd extend from UV to mid-infrared wavelengths, and like SN 2005ip, are compared to reported X-ray measurements to understand the nature of the progenitor. Both objects display a number of similarities with the 1988Z-like subclass of SN IIn including (1) remarkably similar early- and late-phase optical spectra, (2) a variety of high-ionization coronal lines, (3) long-duration optical and near-IR emission, and (4) evidence of cold and warm dust components. However, diversity is apparent, including an unprecedented late-time r-band excess in SN 2006jd. The observed differences are attributed to differences between the mass-loss history of the progenitor stars. We conclude that the progenitor of SN 2006jd likely experienced a significant mass-loss event during its pre-SN evolution akin to the great 19th century eruption of η Carinae. Contrarily, as advocated by Smith et al., the circumstellar environment of SN 2005ip is found to be more consistent with a clumpy wind progenitor. This paper includes data gathered with the 6.5 m Magellan Telescopes, located at Las Campanas Observatory, Chile; the Gemini-North Telescope, Mauna Kea, USA (Gemini Program GN-2010B-Q-67, PI: Stritzinger); the ESO NTT, La Silla, Chile (Program 076.A-0156 and 078.D-0048, PI: Hamuy); and the INT and the NOT (Proposal number 45 - 004, PI: Taddia), La Palma, Spain.

Place, publisher, year, edition, pages
2012. Vol. 756, no 2, 173- p.
Keyword [en]
circumstellar matter, stars: mass-loss, stars: winds, outflows, supernovae: individual: SN 2005ip SN 2006jd
National Category
Natural Sciences
Research subject
URN: urn:nbn:se:su:diva-83516DOI: 10.1088/0004-637X/756/2/173OAI: diva2:576105
Available from: 2012-12-12 Created: 2012-12-12 Last updated: 2012-12-13Bibliographically approved

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Taddia, FrancescoFransson, ClaesSollerman, Jesper
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The Oskar Klein Centre for Cosmo Particle Physics (OKC)Department of Astronomy
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