تقرير
Cold Jupiters and improved masses in 38 Kepler and K2 small planet systems from 3661 HARPS-N radial velocities. No excess of cold Jupiters in small planet systems
| العنوان: | Cold Jupiters and improved masses in 38 Kepler and K2 small planet systems from 3661 HARPS-N radial velocities. No excess of cold Jupiters in small planet systems |
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| المؤلفون: | Bonomo, A. S., Dumusque, X., Massa, A., Mortier, A., Bongiolatti, R., Malavolta, L., Sozzetti, A., Buchhave, L. A., Damasso, M., Haywood, R. D., Morbidelli, A., Latham, D. W., Molinari, E., Pepe, F., Poretti, E., Udry, S., Affer, L., Boschin, W., Charbonneau, D., Cosentino, R., Cretignier, M., Ghedina, A., Lega, E., López-Morales, M., Margini, M., Fiorenzano, A. F. Martínez, Mayor, M., Micela, G., Pedani, M., Pinamonti, M., Rice, K., Sasselov, D., Tronsgaard, R., Vanderburg, A. |
| المصدر: | A&A 677, A33 (2023) |
| سنة النشر: | 2023 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics |
| الوصف: | The exoplanet population characterized by relatively short orbital periods ($P<100$ d) around solar-type stars is dominated by super-Earths and sub-Neptunes. However, these planets are missing in our Solar System and the reason behind this absence is still unknown. Two theoretical scenarios invoke the role of Jupiter as the possible culprit: Jupiter may have acted as a dynamical barrier to the inward migration of sub-Neptunes from beyond the water iceline; alternatively, Jupiter may have reduced considerably the inward flux of material (pebbles) required to form super-Earths inside that iceline. Both scenarios predict an anti-correlation between the presence of small planets (SPs) and that of cold Jupiters (CJs) in exoplanetary systems. To test that prediction, we homogeneously analyzed the radial-velocity (RV) measurements of 38 Kepler and K2 transiting SP systems gathered over almost 10 years with the HARPS-N spectrograph, as well as publicly available RVs collected with other facilities. We detected five CJs in three systems, two in Kepler-68, two in Kepler-454, and a very eccentric one in K2-312. We derived an occurrence rate of $9.3^{+7.7}_{-2.9}\%$ for CJs with $0.3-13~M_{Jup}$ and 1-10 AU, which is lower but still compatible at $1.3\sigma$ with that measured from RV surveys for solar-type stars, regardless of the presence or absence of SPs. The sample is not large enough to draw a firm conclusion about the predicted anti-correlation between SPs and CJs; nevertheless, we found no evidence of previous claims of an excess of CJs in SP systems. As an important by-product of our analyses, we homogeneously determined the masses of 64 Kepler and K2 small planets, reaching a precision better than 5, 7.5 and 10$\sigma$ for 25, 13 and 8 planets, respectively. Finally, we release the 3661 HARPS-N radial velocities used in this work to the scientific community. [Abridged] Comment: 21 pages, 10 figures, 10 tables, published in Astronomy and Astrophysics. The updated version of the article takes into account the A&A language editing and guidelines. Tables 1, A.1 and full Table 2 are available at the CDS via anonymous ftp to cdsarc.cds.unistra.fr (130.79.128.5) or via https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/677/A33 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1051/0004-6361/202346211 |
| URL الوصول: | http://arxiv.org/abs/2304.05773 |
| رقم الأكسشن: | edsarx.2304.05773 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1051/0004-6361/202346211 |
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