2012/02/27 by Álvaro Ribas, Bruno Merín, B. Merín +4
Physics and Astronomy · #Astro and Planetary Science #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Debris disk #Exoplanet #Habitability of orange dwarf systems #Infrared excess #Physics #Planet #Planetary migration #Planetary system #Planetesimal #Stars #Stellar, planetary, and galactic studies #astro-ph.EP
paper · pdf · doi:10.1051/0004-6361/201118306
Submitted to A&A: 21 October 2011 / Accepted for publication in A&A: 27 February 2012
openalex publication_date 2012/02/27 · arxiv created 2012/02/29 · arxiv updated 2013/12/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We have bandmerged candidate transiting planetary systems (from the Kepler satellite) and confirmed transiting planetary systems (from the literature) with the recent Wide-field Infrared Survey Explorer (WISE) preliminary release catalog. We have found 13 stars showing infrared excesses at either 12 μm and/or 22 μm. Without longer wavelength observations it is not possible to conclusively determine the nature of the excesses, although we argue that they are likely due to debris disks around the stars. If confirmed, our sample ~doubles the number of currently known warm excess disks around old main sequence stars. The ratios between the measured fluxes and the stellar photospheres are generally larger than expected for Gyr-old stars, such as these planetary hosts. Assuming temperature limits for the dust and emission from large dust particles, we derive estimates for the disk radii. These values are comparable to the planet’s semi-major axis, suggesting that the planets may be stirring the planetesimals in the system.