Greaves, JS;
Kennedy, GM;
Thureau, N;
Eiroa, C;
Marshall, JP;
Maldonado, J;
Matthews, BC;
... Wyatt, MC; + view all
(2014)
Alignment in star–debris disc systems seen by Herschel.
Monthly Notices of the Royal Astronomical Society
, 438
(1)
L31-L35.
10.1093/mnrasl/slt153.
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Abstract
Many nearby main-sequence stars have been searched for debris using the far-infrared Herschel satellite, within the DEBRIS, DUNES and Guaranteed-Time Key Projects. We discuss here 11 stars of spectral types A–M where the stellar inclination is known and can be compared to that of the spatially resolved dust belts. The discs are found to be well aligned with the stellar equators, as in the case of the Sun's Kuiper belt, and unlike many close-in planets seen in transit surveys. The ensemble of stars here can be fitted with a star–disc tilt of ≲ 10°. These results suggest that proposed mechanisms for tilting the star or disc in fact operate rarely. A few systems also host imaged planets, whose orbits at tens of au are aligned with the debris discs, contrary to what might be expected in models where external perturbers induce tilts.
| Type: | Article |
|---|---|
| Title: | Alignment in star–debris disc systems seen by Herschel |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnrasl/slt153 |
| Publisher version: | https://doi.org/10.1093/mnrasl/slt153 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | circumstellar matter, planetary systems, infrared: stars |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10093783 |
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