| Issue |
A&A
Volume 677, September 2023
|
|
|---|---|---|
| Article Number | A71 | |
| Number of page(s) | 25 | |
| Section | Planets and planetary systems | |
| DOI | https://doi.org/10.1051/0004-6361/202346165 | |
| Published online | 08 September 2023 | |
Radial distribution of giant exoplanets at Solar System scales
1
LESIA, Observatoire de Paris, Université PSL, CNRS,
5 Place Jules Janssen,
92190
Meudon, France
e-mail: anne-marie.lagrange@obspm.fr
2
Univ. Grenoble Alpes, CNRS-INSU, Institut de Planétologie et d’Astrophysique de Grenoble (IPAG),
UMR 5274,
Grenoble
38041, France
3
Pixyl S.A.,
5 Av. du Grand Sablon,
38700
La Tronche, France
Received:
16
February
2023
Accepted:
20
April
2023
Aims. Giant planets play a major role in multiple planetary systems. Knowing their demographics is important to test their overall impact on the formation of planetary systems. It is also important to test their formation processes. Recently, three radial velocity (RV) surveys have established radial distributions of giant planets. All show a steep increase up to 1–3 au, and two suggest a decrease beyond that.
Methods. We aim to understand the limitations associated with the characterization of long-period giant RV planets, and to estimate their impact on the radial distribution of these planets.
Results. We revisit the results obtained by two major surveys that derived such radial distributions, using the RV data available at the time of the surveys as well as, whenever possible, new data.
Conclusions. We show that the radial distributions published beyond (5–8 au) are not secure. More precisely, the decrease in the radial distribution beyond the peak at 1–3 au is not confirmed.
Key words: techniques: radial velocities / planets and satellites: detection
© The Authors 2023
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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