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Massive stars exploding in a He-rich circumstellar medium - III. SN 2006jc : infrared echoes from new and old dust in the progenitor CSM

Mattila, S. and Meikle, W. P. S. and Lundqvist, P. and Pastorello, A. and Kotak, R. and Eldridge, J. and Smartt, S. and Adamson, A. and Gerardy, C. L. and Rizzi, L. and Stephens, A. W. and Van Dyk, S. D. (2008) Massive stars exploding in a He-rich circumstellar medium - III. SN 2006jc : infrared echoes from new and old dust in the progenitor CSM. Monthly Notices of the Royal Astronomical Society, 389 (1). pp. 141-155. ISSN 0035-8711. doi:10.1111/j.1365-2966.2008.13516.x.

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We present near- (NIR) and mid-infrared (MIR) photometric data of the Type Ibn supernova (SN) 2006jc obtained with the United Kingdom Infrared Telescope (UKIRT), the Gemini North Telescope and the Spitzer Space Telescope between days 86 and 493 post-explosion. We find that the IR behaviour of SN 2006jc can be explained as a combination of IR echoes from two manifestations of circumstellar material. The bulk of the NIR emission arises from an IR echo from newly condensed dust in a cool dense shell (CDS) produced by the interaction of the ejecta outward shock with a dense shell of circumstellar material ejected by the progenitor in a luminous blue variable (LBV)-like outburst about two years prior to the SN explosion. The CDS dust mass reaches a modest 3.0 × 10^(−4) M_⊙ by day 230. While dust condensation within a CDS formed behind the ejecta inward shock has been proposed before for one event (SN 1998S), SN 2006jc is the first one showing evidence for dust condensation in a CDS formed behind the ejecta outward shock in the circumstellar material. At later epochs, a substantial and growing contribution to the IR fluxes arises from an IR echo from pre-existing dust in the progenitor wind. The mass of the pre-existing circumstellar medium (CSM) dust is at least ∼8 × 10^(−3) M_⊙. This paper therefore adds to the evidence that mass-loss from the progenitors of core-collapse SNe could be a major source of dust in the Universe. However, yet again, we see no direct evidence that the explosion of an SN produces anything other than a very modest amount of dust.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Mattila, S.0000-0001-7497-2994
Lundqvist, P.0000-0002-3664-8082
Kotak, R.0000-0001-5455-3653
Smartt, S.0000-0002-8229-1731
Rizzi, L.0000-0003-0882-2327
Van Dyk, S. D.0000-0001-9038-9950
Additional Information:© 2008 The Authors. Journal compilation © 2008 RAS. Accepted 2008 May 26. Received 2008 May 26; in original form 2008 March 14. We thank an anonymous referee for useful comments and S. Valenti, L. Zampieri and D. Watson for helpful discussions. We also thank the Cambridge Astronomical Survey Unit (CASU) for access to the reduced UKIRT WFCAM images. This paper is based on observations made with the UKIRT, the Spitzer and the Gemini Observatory. UKIRT is operated by the Joint Astronomy Centre on behalf of the Science and Technology Facilities Council of the UK. The Spitzer is operated by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. The Gemini Observatory is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (United States), the Science and Technology Facilities Council (United Kingdom), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), CNPq (Brazil) and SECYT (Argentina). Financial support for this paper was provided by NASA through awards (30292, 40619) issued by JPL/Caltech. This paper, conducted as part of the award ‘Understanding the lives of massive stars from birth to supernovae’ made under the European Heads of Research Councils and European Science Foundation EURYI Awards scheme, was supported by the Participating Organizations of EURYI and the EC Sixth Framework Programme. SM acknowledges financial support from the Academy of Finland (project: 8120503).
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Science and Technology Facilities Council (STFC)UNSPECIFIED
European Heads of Research CouncilsUNSPECIFIED
European Science FoundationUNSPECIFIED
Academy of Finland8120503
Issue or Number:1
Record Number:CaltechAUTHORS:20170408-214229570
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Official Citation:S. Mattila, W. P. S. Meikle, P. Lundqvist, A. Pastorello, R. Kotak, J. Eldridge, S. Smartt, A. Adamson, C. L. Gerardy, L. Rizzi, A. W. Stephens, S. D. Van Dyk; Massive stars exploding in a He-rich circumstellar medium – III. SN 2006jc: infrared echoes from new and old dust in the progenitor CSM, Monthly Notices of the Royal Astronomical Society, Volume 389, Issue 1, 1 September 2008, Pages 141–155,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:76410
Deposited By: 1Science Import
Deposited On:02 Apr 2018 20:37
Last Modified:15 Nov 2021 16:59

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