THE POSSIBLE DETECTION OF A BINARY COMPANION TO A TYPE IBN SUPERNOVA PROGENITOR

ABSTRACT We present late-time observations of the site of the Type Ibn supernova (SN) 2006jc, acquired with the Hubble Space Telescope Advanced Camera for Surveys. A faint blue source is recovered at the SN position, with brightness , and mag, although there is no detection in a contemporaneous narr...

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Bibliographic Details
Published in:The Astrophysical journal 2016-12, Vol.833 (2), p.128
Main Authors: Maund, J. R., Pastorello, A., Mattila, S., Itagaki, K., Boles, T.
Format: Article
Language:English
Subjects:
Astrophysics
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Binary stars
BRIGHTNESS
Companion stars
COSMIC DUST
DETECTION
Echoes
ENERGY SPECTRA
EXPLOSIONS
Hubble Space Telescope
Image detection
Outbursts
SPACE
Space telescopes
Spectral energy distribution
Supernova
supernovae: general
supernovae: individual (2006jc)
TELESCOPES
TYPE I SUPERNOVAE
Variable stars
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Summary:ABSTRACT We present late-time observations of the site of the Type Ibn supernova (SN) 2006jc, acquired with the Hubble Space Telescope Advanced Camera for Surveys. A faint blue source is recovered at the SN position, with brightness , and mag, although there is no detection in a contemporaneous narrow-band image. The spectral energy distribution of the late-time source is well-fit by a stellar-like spectrum ( and ), subject to only a small degree of reddening-consistent with that estimated for SN 2006jc itself at early-times. The lack of further outbursts after the explosion of SN 2006jc suggests that the precursor outburst originated from the progenitor. The possibility of the source being a compact host cluster is ruled out on the basis of the source's faintness; however, the possibility that the late-time source may be an unresolved light echo originating in a shell or sphere of pre-SN dust (within a radius ) is also discussed. Irrespective of the nature of the late-time source, these observations rule out a luminous blue variable as a companion to the progenitor of SN 2006jc.
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/833/2/128