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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 421775.0, MPI für Astronomie / Publikationen_mpia
A survey for massive giant planets in debris disks with evacuated inner cavities
Authors:Apai, D.; Janson, M.; Moro-Martín, A.; Meyer, M. R.; Mamajek, E. E.; Masciadri, E.; Henning, Th; Pascucci, I.; Kim, J. S.; Hillenbrand, L. A.; Kasper, M.; Biller, B.
Language:German
Date of Publication (YYYY-MM-DD):2008
Title of Journal:The Astrophysical Journal
Journal Abbrev.:ApJ
Volume:672
Start Page:1196
End Page:1201
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:The commonality of collisionally replenished debris around main-sequence stars suggests that minor bodies are frequent around Sun-like stars. Whether or not debris disks in general are accompanied by planets is yet unknown, but debris disks with large inner cavities-perhaps dynamically cleared-are considered to be prime candidates for hosting large-separation massive giant planets. We present here a high-contrast VLT/NACO angular differential imaging survey for eight such cold debris disks. We investigated the presence of massive giant planets in the range of orbital radii where the inner edge of the dust debris is expected. Our observations are sensitive to planets and brown dwarfs with masses >3-7 Jupiter mass, depending on the age and distance of the target star. Our observations did not identify any planet candidates. We compare the derived planet mass upper limits to the minimum planet mass required to dynamically clear the inner disks. While we cannot exclude that single giant planets are responsible for clearing out the inner debris disks, our observations constrain the parameter space available for such planets. The nondetection of massive planets in these evacuated debris disks further reinforces the notion that the giant planet population is confined to the inner disk (<15 AU). Based on observations collected at the European Southern Observatory at Paranal, Chile (ESO programs P078.C-0412(A) and P077.C-0391(A)).
Free Keywords:Stars: Circumstellar Matter; Stars: Planetary Systems; stars: individual (HD 105); stars: individual (HD 377); Stars: Individual: Henry Draper Number: HD 107146; stars: individual (HD 202917); stars: individual (HD 209253); Stars: Individual: Henry Draper Number: HD 35850; stars: individual (HD 70573); stars: individual (HD 25457)
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2008ApJ...672.1196A [ID No:1]
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