On the progenitor of the Type Ibc supernova 2012fh
Abstract
Little is observationally known about the progenitors of Type Ibc supernovae (SNe) or the typical activity of SNe progenitors in their final years. Here, we analyse deep Large Binocular Telescope imaging data spanning the 4 yr before and after the Type Ibc SN 2012fh using difference imaging. We place 1σ upper limits on the detection of the progenitor star at M_U > −3.8, M_B > −3.1, M_V > −3.8 and M_R > −4.0 mag. These limits are the tightest placed on a Type Ibc SN to date and they largely rule out single star evolutionary models in favour of a binary channel as the origin of this SN. We also constrain the activity of the progenitor to be small on an absolute scale, with the RMS UBVRoptical variability ≲ 2500 L⊙ and long-term dimming or brightening trends ≲ 1000 L⊙ yr^(−1) in all four bands.
Additional Information
© 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2017 August 21. Received 2017 August 2; in original form 2017 June 28. Published: 23 August 2017. We thank T. Sukhbold and the referee of this paper for useful comments. CSK is supported by the National Science Foundation grant AST-1515876 and AST-1515927. This work is based on observations made with the Large Binocular Telescope. The Large Binolcular Telescope (LBT) is an international collaboration among institutions in the United States of America, Italy and Germany. The LBT Corporation partners are the University of Arizona on behalf of the Arizona university system and the Istituto Nazionale di Astro. This research has made use of the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.Attached Files
Published - stx2170.pdf
Submitted - 1707.03828.pdf
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Additional details
- Eprint ID
- 82925
- Resolver ID
- CaltechAUTHORS:20171103-073514791
- AST-1515876
- NSF
- AST-1515927
- NSF
- NASA/JPL/Caltech
- Created
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2017-11-03Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field