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Limits on the presence of planets in systems with debris discs: HD 92945 and HD 107146

Authors :
Arthur Vigan
Silvano Desidera
Mickael Bonnefoy
N. Engler
Zahed Wahhaj
E. L. Rickman
Matthias Samland
Markus Janson
Miriam Keppler
Janis Hagelberg
Quentin Kral
Mariangela Bonavita
Ralf Launhardt
R. G. Gratton
C. Lazzoni
L. Weber
A. Pavlov
Anne-Marie Lagrange
Michael Meyer
Elisabetta Rigliaco
M. Feldt
Sergio Messina
N. Pawellek
Alice Zurlo
L. Gluck
O. Moeller-Nilsson
Maud Langlois
V. De Caprio
C. Perrot
Dino Mesa
V. Squicciarini
Julien Milli
Valentina D'Orazi
T. Schmidt
Sebastian Marino
Anthony Boccaletti
C. Fontanive
Sebastián Pérez
Gael Chauvin
A. L. Maire
Th. Henning
Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109))
Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)
Source :
Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 503 (1), pp.1276-1289. ⟨10.1093/mnras/stab438⟩, 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
Publication Year :
2021
Publisher :
HAL CCSD, 2021.

Abstract

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.<br />Comment: 17 pages, 14 Figures, accepted for publication on MNRAS

Details

Language :
English
ISSN :
00358711 and 13652966
Database :
OpenAIRE
Journal :
Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 503 (1), pp.1276-1289. ⟨10.1093/mnras/stab438⟩, Mesa, D.; Marino, S.; Bonavita, M.; Lazzoni, C.; Fontanive, C.; Perez, S.; D&#39;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 <http://dx.doi.org/10.1093/mnras/stab438>
Accession number :
edsair.doi.dedup.....eed9ddb65e322136dbaee5e2c7be2163