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Cited by 368

The DOI matches its Crossref record; 62 of the 62 references it cites were found in a registry or an index.

Debris Disks in Main‐Sequence Binary Systems

Open access
Trilling, D. E., Stansberry, J. A., Stapelfeldt, K. R., Rieke, G. H., Su, K. Y. L., Gray, R. O., Corbally, C. J., Bryden, G., Chen, C. H., Boden, A., Beichman, C. A.·2007·The Astrophysical Journal
DOI 10.1086/511668
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Abstract

We observed 69 A3-F8 main-sequence binary star systems using the Multiband Imaging Photometer for Spitzer on board the Spitzer Space Telescope . We find emission significantly in excess of predicted photospheric flux levels for 9 % and 40 % of these systems at 24 and 70 μm, respectively. Twenty-two systems total have excess emission, including four systems that show excess emission at both wavelengths. A very large fraction (nearly 60%) of observed binary systems with small (<3 AU) separations have excess thermal emission. We interpret the observed infrared excesses as thermal emission from dust produced by collisions in planetesimal belts. The incidence of debris disks around main-sequence A3-F8 binaries is marginally higher than that for single old AFGK stars. Whatever combination of nature (birth conditions of binary systems) and nurture (interactions between the two stars) drives the evolution of debris disks in binary systems, it is clear that planetesimal formation is not inhibited to any great degree. We model these dust disks through fitting the spectral energy distributions and derive typical dust temperatures in the range 100-200 K and typical fractional luminosities around 10 -5 , with both parameters similar to other Spitzer -discovered debris disks. Our calculated dust temperatures suggest that about half the excesses we observe are derived from circumbinary planetesimal belts and around one-third of the excesses clearly suggest circumstellar material. Three systems with excesses have dust in dynamically unstable regions, and we discuss possible scenarios for the origin of this short-lived dust.

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Metadata

Authors
Trilling, D. E., Stansberry, J. A., Stapelfeldt, K. R., Rieke, G. H., Su, K. Y. L., Gray, R. O., Corbally, C. J., Bryden, G., Chen, C. H., Boden, A., & Beichman, C. A.
Venue
The Astrophysical Journal
Publisher
American Astronomical Society
Published
2007-04
Volume
658
Issue
2
Pages
1289-1311
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
DOI
10.1086/511668
OpenAlex
W1966504448
Cited by
368
References
62
FWCI
10.67
Type
journal article
Language
en
Open access
bronze

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