KIC 8462852: THE INFRARED FLUX
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Marengo-2015-KIC 8462852_ The inf.pdf
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Author(s)
Marengo, Massimo
Hulsebus, Alan
Willis, Sarah E.
Date Issued
November 2015
Journal
The Astrophysical Journal. Letters
Publisher
IOP Publishing
Citation
Marengo, Massimo, Alan Hulsebus, and Sarah Willis. “KIC 8462852: THE INFRARED FLUX.” The Astrophysical Journal 814, no. 1 (November 19, 2015): L15. © 2015 IOP Publishing
Version
Final published version
Abstract
We analyzed the warm Spitzer/IRAC data of KIC 8462852. We found no evidence of infrared excess at 3.6 μm and a small excess of 0.43 ± 0.18 mJy at 4.5 μm below the 3σ threshold necessary to claim a detection. The lack of strong infrared excess 2 years after the events responsible for the unusual light curve observed by Kepler further disfavors the scenarios involving a catastrophic collision in a KIC 8462852 asteroid belt, a giant impact disrupting a planet in the system or a population of dust-enshrouded planetesimals. The scenario invoking the fragmentation of a family of comets on a highly elliptical orbit is instead consistent with the lack of strong infrared excess found by our analysis.
MIT Department
Lincoln Laboratory
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DOI of Published Version
https://doi.org/10.1088/2041-8205/814/1/L15
