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A Direct Imaging Survey of Spitzer detected debris disks: Occurrence of giant planets in dusty systems
- Source :
- BASE-Bielefeld Academic Search Engine
- Publication Year :
- 2017
- Publisher :
- American Astronomical Society, 2017.
-
Abstract
- We describe a joint high contrast imaging survey for planets at Keck and VLT of the last large sample of debris disks identified by the Spitzer Space Telescope. No new substellar companions were discovered in our survey of 30 Spitzer-selected targets. We combine our observations with data from four published surveys to place constraints on the frequency of planets around 130 debris disk single stars, the largest sample to date. For a control sample, we assembled contrast curves from several published surveys targeting 277 stars which do not show infrared excesses. We assumed a double power law distribution in mass and semi-major axis of the form f(m,a) = $Cm^{\alpha}a^{\beta}$, where we adopted power law values and logarithmically flat values for the mass and semi-major axis of planets. We find that the frequency of giant planets with masses 5-20 $M_{\rm Jup}$ and separations 10-1000 AU around stars with debris disks is 6.27% (68% confidence interval 3.68 - 9.76%), compared to 0.73% (68% confidence interval 0.20 - 1.80%) for the control sample of stars without disks. These distributions differ at the 88% confidence level, tentatively suggesting distinctness of these samples.<br />Comment: Accepted to AJ
- Subjects :
- Physics
Earth and Planetary Astrophysics (astro-ph.EP)
Very Large Telescope
Debris disk
010504 meteorology & atmospheric sciences
Infrared
FOS: Physical sciences
Astronomy and Astrophysics
Astrophysics
01 natural sciences
Debris
Confidence interval
Stars
Spitzer Space Telescope
Space and Planetary Science
Planet
0103 physical sciences
010303 astronomy & astrophysics
0105 earth and related environmental sciences
Astrophysics - Earth and Planetary Astrophysics
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- BASE-Bielefeld Academic Search Engine
- Accession number :
- edsair.doi.dedup.....e6c31b0dbb15396db7ad7d902573e205