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The Mid-infrared Light Curve of Nearby Core-collapse Supernova SN 2011dh (PTF 11eon)

Helou, George and Kasliwal, Mansi M. and Ofek, Eran O. and Arcavi, Iair and Surace, Jason and Gal-Yam, Avishay (2013) The Mid-infrared Light Curve of Nearby Core-collapse Supernova SN 2011dh (PTF 11eon). Astrophysical Journal Letters, 778 (1). Art. No. L19. ISSN 2041-8205.

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We present Spitzer observations at 3.6 and 4.5 μm of the supernova SN 2011dh (PTF 11eon) in M51 from 18 days to 625 days after explosion. The mid-infrared emission peaks at 24 days after explosion at a few ×10^7 L_☉, and decays more slowly than the visible-light bolometric luminosity. The infrared color temperature cools for the first 90 days and then is constant. Simple numerical models of a thermal echo can qualitatively reproduce the early behavior. At late times, the mid-IR light curve cannot be explained by a simple thermal echo model, suggesting additional dust heating or line emission mechanisms. We also propose that thermal echoes can serve as effective probes to uncover supernovae in heavily obscured environments, and speculate that under the right conditions, integrating the early epoch of the mid-infrared light curve may constrain the total energy in the shock breakout flash.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Helou, George0000-0003-3367-3415
Kasliwal, Mansi M.0000-0002-5619-4938
Ofek, Eran O.0000-0002-6786-8774
Arcavi, Iair0000-0001-7090-4898
Surace, Jason0000-0001-7291-0087
Gal-Yam, Avishay0000-0002-3653-5598
Additional Information:© 2013 American Astronomical Society. Received 2013 May 8; accepted 2013 September 26; published 2013 November 7. We acknowledge the anonymous referee and Eli Dwek for helpful comments. This work was supported and based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. M.M.K. acknowledges generous support from the Hubble Fellowship and Carnegie-Princeton Fellowship. E.O.O. is incumbent of the Arye Dissentshik career development chair and is grateful to support by a grants from the Israeli Ministry of Science and the I-CORE Program. Work by A.G.-Y. and his group is supported by grants from the BSF, ISF, GIF and Minerva, the EU/FP7 via an ERC grant, and the Kimmel award for innovative investigation.
Group:Infrared Processing and Analysis Center (IPAC), Palomar Transient Factory
Funding AgencyGrant Number
Carnegie-Princeton FellowshipUNSPECIFIED
Ministry of Science (Israel)UNSPECIFIED
I-CORE Program of the Planning and Budgeting CommitteeUNSPECIFIED
Binational Science Foundation (USA-Israel)UNSPECIFIED
Israel Science FoundationUNSPECIFIED
German-Israeli Foundation for Research and DevelopmentUNSPECIFIED
European Research Council (ERC)UNSPECIFIED
Subject Keywords:circumstellar matter; galaxies: individual (M51); infrared: ISM; supernovae: individual (SN2011dh)
Issue or Number:1
Record Number:CaltechAUTHORS:20140107-140223826
Persistent URL:
Official Citation:The Mid-infrared Light Curve of Nearby Core-collapse Supernova SN 2011dh (PTF 11eon) George Helou et al. 2013 ApJ 778 L19
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43250
Deposited By: Ruth Sustaita
Deposited On:07 Jan 2014 22:24
Last Modified:03 Oct 2019 06:05

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