Saturns, but Not Super-Jupiters, Occur More Frequently in the Presence of Inner Super-Earths
Studies from recent years have reached different conclusions regarding how frequently super-Earths are accompanied by long-period giant planets and vice versa. This relation has been predicted to be mass dependent by planet-formation models. We investigate that as the origin of the discrepancy using...
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ade715 |
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| author | Etienne Lefèvre-Forján Gijs D. Mulders |
| author_facet | Etienne Lefèvre-Forján Gijs D. Mulders |
| author_sort | Etienne Lefèvre-Forján |
| collection | DOAJ |
| description | Studies from recent years have reached different conclusions regarding how frequently super-Earths are accompanied by long-period giant planets and vice versa. This relation has been predicted to be mass dependent by planet-formation models. We investigate that as the origin of the discrepancy using a radial velocity sample: the California Legacy Survey. We perform detection completeness corrections in order to discard detection bias as a possible explanation to our results. After bias corrections, we find that cold Jupiters are $5.6{5}_{-2.57}^{+1.08}$ times more massive when not in the company of an inner super-Earth, while super-Earths are not significantly more massive while in the company of an outer giant planet. We also report an occurrence enhancement for Saturns (median projected mass of 0.6 M _J ) while in presence of a super-Earth by a factor of ∼4, and for super-Earths in the presence of Saturns by the same factor. This positive correlation disappears for super-Jupiters (median projected mass of 3.1 M _J ). These results show that while cold Jupiters are generally accompanied by inner super-Earths, this does not hold for the largest giant planets, such as those that will be discovered by Gaia, which will likely not be accompanied by transiting planets. The mass dependence, in combination with the different detection limits of different surveys, may explain the discrepancies concerning occurrence relations between cold Jupiters and super-Earths. |
| format | Article |
| id | doaj-art-d90a5edd15744505aed47e1da59e7779 |
| institution | DOAJ |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal |
| spelling | doaj-art-d90a5edd15744505aed47e1da59e77792025-08-20T02:40:26ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01988110110.3847/1538-4357/ade715Saturns, but Not Super-Jupiters, Occur More Frequently in the Presence of Inner Super-EarthsEtienne Lefèvre-Forján0Gijs D. Mulders1https://orcid.org/0000-0002-1078-9493Facultad de Física, Pontificia Universidad Católica de Chile , Av. Vicuña Mackenna 4860, Macul, Santiago, ChileFacultad de Física, Pontificia Universidad Católica de Chile , Av. Vicuña Mackenna 4860, Macul, Santiago, ChileStudies from recent years have reached different conclusions regarding how frequently super-Earths are accompanied by long-period giant planets and vice versa. This relation has been predicted to be mass dependent by planet-formation models. We investigate that as the origin of the discrepancy using a radial velocity sample: the California Legacy Survey. We perform detection completeness corrections in order to discard detection bias as a possible explanation to our results. After bias corrections, we find that cold Jupiters are $5.6{5}_{-2.57}^{+1.08}$ times more massive when not in the company of an inner super-Earth, while super-Earths are not significantly more massive while in the company of an outer giant planet. We also report an occurrence enhancement for Saturns (median projected mass of 0.6 M _J ) while in presence of a super-Earth by a factor of ∼4, and for super-Earths in the presence of Saturns by the same factor. This positive correlation disappears for super-Jupiters (median projected mass of 3.1 M _J ). These results show that while cold Jupiters are generally accompanied by inner super-Earths, this does not hold for the largest giant planets, such as those that will be discovered by Gaia, which will likely not be accompanied by transiting planets. The mass dependence, in combination with the different detection limits of different surveys, may explain the discrepancies concerning occurrence relations between cold Jupiters and super-Earths.https://doi.org/10.3847/1538-4357/ade715Exoplanet astronomyExoplanetsExoplanet systems |
| spellingShingle | Etienne Lefèvre-Forján Gijs D. Mulders Saturns, but Not Super-Jupiters, Occur More Frequently in the Presence of Inner Super-Earths The Astrophysical Journal Exoplanet astronomy Exoplanets Exoplanet systems |
| title | Saturns, but Not Super-Jupiters, Occur More Frequently in the Presence of Inner Super-Earths |
| title_full | Saturns, but Not Super-Jupiters, Occur More Frequently in the Presence of Inner Super-Earths |
| title_fullStr | Saturns, but Not Super-Jupiters, Occur More Frequently in the Presence of Inner Super-Earths |
| title_full_unstemmed | Saturns, but Not Super-Jupiters, Occur More Frequently in the Presence of Inner Super-Earths |
| title_short | Saturns, but Not Super-Jupiters, Occur More Frequently in the Presence of Inner Super-Earths |
| title_sort | saturns but not super jupiters occur more frequently in the presence of inner super earths |
| topic | Exoplanet astronomy Exoplanets Exoplanet systems |
| url | https://doi.org/10.3847/1538-4357/ade715 |
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