A Caltech Library Service

The Type IIb Supernova 2013df and its Cool Supergiant Progenitor

Van Dyk, Schuyler D. and Zheng, WeiKang and Fox, Ori D. and Cenko, S. Bradley and Clubb, Kelsey I. and Filippenko, Alexei V. and Foley, Ryan J. and Miller, Adam A. and Smith, Nathan and Kelly, Patrick L. and Lee, William H. and Ben-Ami, Sagi and Gal-Yam, Avishay (2014) The Type IIb Supernova 2013df and its Cool Supergiant Progenitor. Astronomical Journal, 147 (2). Art. No. 37. ISSN 0004-6256.

PDF - Published Version
See Usage Policy.

PDF - Submitted Version
See Usage Policy.


Use this Persistent URL to link to this item:


We have obtained early-time photometry and spectroscopy of supernova (SN) 2013df in NGC 4414. The SN is clearly of Type IIb, with notable similarities to SN 1993J. From its luminosity at secondary maximum light, it appears that less 56Ni (≲0.06 M_☉) was synthesized in the SN 2013df explosion than was the case for the SNe IIb 1993J, 2008ax, and 2011dh. Based on a comparison of the light curves, the SN 2013df progenitor must have been more extended in radius prior to explosion than the progenitor of SN 1993J. The total extinction for SN 2013df is estimated to be AV = 0.30 mag. The metallicity at the SN location is likely to be solar. We have conducted Hubble Space Telescope (HST) Target of Opportunity observations of the SN with the Wide Field Camera 3, and from a precise comparison of these new observations to archival HST observations of the host galaxy obtained 14 yr prior to explosion, we have identified the progenitor of SN 2013df to be a yellow supergiant, somewhat hotter than a red supergiant progenitor for a normal Type II-Plateau SN. From its observed spectral energy distribution, assuming that the light is dominated by one star, the progenitor had effective temperature Teff = 4250 ± 100 K and a bolometric luminosity L_bol = 10^4.94 ± 0.06)L_☉. This leads to an effective radius R_eff = 545 ± 65 R_☉. The star likely had an initial mass in the range of 13–17 M_☉; however, if it was a member of an interacting binary system, detailed modeling of the system is required to estimate this mass more accurately. The progenitor star of SN 2013df appears to have been relatively similar to the progenitor of SN 1993J.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Van Dyk, Schuyler D.0000-0001-9038-9950
Zheng, WeiKang0000-0002-2636-6508
Fox, Ori D.0000-0003-2238-1572
Cenko, S. Bradley0000-0003-1673-970X
Filippenko, Alexei V.0000-0003-3460-0103
Miller, Adam A.0000-0001-9515-478X
Kelly, Patrick L.0000-0003-3142-997X
Ben-Ami, Sagi0000-0001-6760-3074
Gal-Yam, Avishay0000-0002-3653-5598
Additional Information:© 2014 American Astronomical Society. Received 2013 October 16; accepted 2013 December 11; published 2014 January 9. This work is based in part on observations made with the NASA/ESA Hubble Space Telescope, obtained from the Data Archive at the Space Telescope Science Institute (STScI), which is operated by the Association of Universities for Research in Astronomy (AURA), Inc., under NASA contract NAS5-26555. Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and NASA; the observatory was made possible by the generous financial support of the W. M. Keck Foundation. KAIT and its ongoing research were made possible by donations from Sun Microsystems, Inc., the Hewlett-Packard Company, AutoScope Corporation, Lick Observatory, the NSF, the University of California, the Sylvia and Jim Katzman Foundation, and the TABASGO Foundation. We thank the RATIR instrument team and the staff of the Observatorio Astronómico Nacional on Sierra San Pedro Mártir. RATIR is a collaboration between the University of California, the Universidad Nacional Autonóma de México, NASA Goddard Space Flight Center, and Arizona State University, benefiting from the loan of an H2RG detector from Teledyne Scientific and Imaging. RATIR, the automation of the Harold L. Johnson Telescope of the Observatorio Astronómico Nacional on Sierra San Pedro Mártir, and the operation of both are funded by the partner institutions and through NASA grants NNX09AH71G, NNX09AT02G, NNX10AI27G, and NNX12AE66G, CONACyT grants INFR- 2009-01-122785, UNAM PAPIIT grant IN113810, and a UC MEXUS-CONACyT grant. Support for this research was provided by NASA through grants GO-12888 and GO-13030 from STScI. A.V.F. and his group at UC Berkeley also wish to acknowledge generous support from Gary and Cynthia Bengier, the Richard and Rhoda Goldman Fund, the Christopher R. Redlich Fund, the TABASGO Foundation, and NSF grant AST-1211916. Research by A.G. is supported by the EU/FP7 via ERC grant n 307260, “The Quantum Universe” I-Core program by the Israeli Committee for planning and budgeting, the ISF, GIF, and Minerva grants, and the Kimmel award. S.B. is supported by the Ilan Ramon Fellowship from ISA. A.A.M. acknowledges support for this work by NASA from a Hubble Fellowship grantHST-HF-51325.01, awarded by STScI, operated by AURA, Inc., for NASA, under contract NAS 5-26555. Part of the research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. Facilities: HST (WFPC2, WFC3), Keck:II, KAIT, OANSPM:HJT
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Gary and Cynthia BengierUNSPECIFIED
Richard and Rhoda Goldman FundUNSPECIFIED
Christopher R. Redlich FundUNSPECIFIED
European Research Council (ERC)307260
Israeli Committee I-Core ProgramUNSPECIFIED
Israel Science FoundationUNSPECIFIED
German-Israeli Foundation for Research and DevelopmentUNSPECIFIED
ISA Ilan Ramon FellowshipUNSPECIFIED
NASA Hubble FellowshipHST-HF-51325.01
Consejo Nacional de Ciencia y Tecnología (CONACYT)INFR-2009-01-122785
W. M. Keck FoundationUNSPECIFIED
Subject Keywords:galaxies: individual (NGC 4414); stars: evolution; supernovae: general; supernovae: individual (SN 2013df)
Issue or Number:2
Record Number:CaltechAUTHORS:20140214-154757160
Persistent URL:
Official Citation:The Type IIb Supernova 2013df and its Cool Supergiant Progenitor Schuyler D. Van Dyk et al. 2014 The Astronomical Journal 147 37
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43844
Deposited By: Jason Perez
Deposited On:18 Feb 2014 22:07
Last Modified:22 Nov 2019 22:48

Repository Staff Only: item control page