Mesa, D.; Marino, S.; Bonavita, M.; Lazzoni, C.; Fontanive, C.; Perez, S.; D'Orazi, V.; Desidera, S.; Gratton, R.; Engler, N.; Henning, T.; Janson, M.; Kral, Q.; Langlois, M.; Messina, S.; Milli, J.; Pawellek, N.; Perrot, C.; Rigliaco, E.; Rickman, E.; ... (2021). Limits on the presence of planets in systems with debris disks: HD 92945 and HD 107146. Monthly notices of the Royal Astronomical Society, 503(1), pp. 1276-1289. Oxford University Press 10.1093/mnras/stab438
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Recent observations of resolved cold debris disks at tens of au have revealed that gaps could be a common feature in these Kuiper belt analogues. Such gaps could be evidence for the presence of planets within the gaps or closer-in near the edges of the disk. We present SPHERE observations of HD 92945 and HD 107146, two systems with detected gaps. We constrained the mass of possible companions responsible for the gap to 1-2 M Jup for planets located inside the gap and to less than 5 M Jup for separations down to 20 au from the host star. These limits allow us to exclude some of the possible configurations of the planetary systems proposed to explain the shape of the disks around these two stars. In order to put tighter limits on the mass at very short separations from the star, where direct imaging data are less effective, we also combined our data with astrometric measurements from Hipparcos and Gaia and radial velocity measurements. We were able to limit the separation and the mass of the companion potentially responsible for the proper motion anomaly of HD 107146 to values of 2-7 au and 2-5 M Jup , respectively.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences 08 Faculty of Science > Physics Institute 10 Strategic Research Centers > Center for Space and Habitability (CSH) 08 Faculty of Science > Physics Institute > NCCR PlanetS |
UniBE Contributor: |
Fontanive, Clémence |
Subjects: |
500 Science > 520 Astronomy 500 Science > 530 Physics |
ISSN: |
0035-8711 |
Publisher: |
Oxford University Press |
Language: |
English |
Submitter: |
Danielle Zemp |
Date Deposited: |
09 May 2022 10:20 |
Last Modified: |
03 Apr 2023 05:54 |
Publisher DOI: |
10.1093/mnras/stab438 |
Uncontrolled Keywords: |
Earth and Planetary Astrophysics (astro-ph.EP), Solar and Stellar Astrophysics (astro-ph.SR), FOS: Physical sciences, FOS: Physical sciences |
BORIS DOI: |
10.48350/169740 |
URI: |
https://boris.unibe.ch/id/eprint/169740 |
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