ON THE RELATIONSHIP BETWEEN DEBRIS DISKS AND PLANETS

Journal Article · Sat Aug 01 04:00:00 EDT 2009 · Astrophysical Journal (Online)

DOI:https://doi.org/10.1088/0004-637X/700/2/L73; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)· OSTI ID:21313808

Kospal, Agnes ^[1]; Ardila, David R ^[2]; Moor, Attila; Abraham, Peter ^[3]

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1. Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA, Leiden (Netherlands)
2. NASA Herschel Science Center, California Institute of Technology, Pasadena, CA 91125 (United States)
3. Konkoly Observatory of the Hungarian Academy of Sciences, P.O. Box 67, 1525 Budapest (Hungary)

Dust in debris disks is generated by collisions among planetesimals. The existence of these planetesimals is a consequence of the planet formation process, but the relationship between debris disks and planets has not been clearly established. Here we analyze Spitzer/MIPS 24 and 70 {mu}m data for 150 planet-bearing stars, and compare the incidence of debris disks around these stars with a sample of 118 stars around which planets have been searched for, but not found. Together they comprise the largest sample ever assembled to deal with this question. The use of survival analysis techniques allows us to account for the large number of nondetections at 70 {mu}m. We discovered 10 new debris disks around stars with planets and one around a star without known planets. We found that the incidence of debris disks is marginally higher among stars with planets, than among those without, and that the brightness of the average debris disk is not significantly different in the two samples. We conclude that the presence of a planet that has been detected via current radial velocity techniques is not a good predictor of the presence of a debris disk detected at infrared wavelengths.

• OSTI ID: 21313808
• Journal Information: Astrophysical Journal (Online), Journal Name: Astrophysical Journal (Online) Journal Issue: 2 Vol. 700; ISSN 1538-4357
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS
BRIGHTNESS
DUSTS
PLANETS
RADIAL VELOCITY
STARS