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The HARPS search for southern extra-solar planets. XLIII. A compact system of four super-Earth planets orbiting HD 215152
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dc.contributor.author | Delisle, J.-B. | |
dc.contributor.author | Ségransan, D. | |
dc.contributor.author | Dumusque, X. | |
dc.contributor.author | Diaz, R. F. | |
dc.contributor.author | Bouchy, F. | |
dc.contributor.author | Lovis, C. | |
dc.contributor.author | Pepe, F. | |
dc.contributor.author | Udry, S. | |
dc.contributor.author | Alonso, R. | |
dc.contributor.author | Benz, W. | |
dc.contributor.author | Coffinet, A. | |
dc.contributor.author | Collier Cameron, A. | |
dc.contributor.author | Deleuil, M. | |
dc.contributor.author | Figueira, P. | |
dc.contributor.author | Gillon, M. | |
dc.contributor.author | Lo Curto, G. | |
dc.contributor.author | Mayor, M. | |
dc.contributor.author | Mordasini, C. | |
dc.contributor.author | Motalebi, F. | |
dc.contributor.author | Moutou, C. | |
dc.contributor.author | Pollacco, D. | |
dc.contributor.author | Pompei, E. | |
dc.contributor.author | Queloz, D. | |
dc.contributor.author | Santos, N. C. | |
dc.contributor.author | Wyttenbach, A. | |
dc.date.accessioned | 2018-04-03T16:30:14Z | |
dc.date.available | 2018-04-03T16:30:14Z | |
dc.date.issued | 2018-06 | |
dc.identifier | 252661395 | |
dc.identifier | 596ef6b4-1b97-4c3c-b59a-b517a984f80c | |
dc.identifier | 85049597948 | |
dc.identifier | 000436412100001 | |
dc.identifier.citation | Delisle , J-B , Ségransan , D , Dumusque , X , Diaz , R F , Bouchy , F , Lovis , C , Pepe , F , Udry , S , Alonso , R , Benz , W , Coffinet , A , Collier Cameron , A , Deleuil , M , Figueira , P , Gillon , M , Lo Curto , G , Mayor , M , Mordasini , C , Motalebi , F , Moutou , C , Pollacco , D , Pompei , E , Queloz , D , Santos , N C & Wyttenbach , A 2018 , ' The HARPS search for southern extra-solar planets. XLIII. A compact system of four super-Earth planets orbiting HD 215152 ' , Astronomy & Astrophysics , vol. 614 , A133 . https://doi.org/10.1051/0004-6361/201732529 | en |
dc.identifier.issn | 0004-6361 | |
dc.identifier.other | BibCode: 2018arXiv180204631D | |
dc.identifier.other | ORCID: /0000-0002-8863-7828/work/58531321 | |
dc.identifier.uri | https://hdl.handle.net/10023/13059 | |
dc.description.abstract | We report the discovery of four super-Earth planets around HD 215152, with orbital periods of 5.76, 7.28, 10.86, and 25.2 d, and minimum masses of 1.8, 1.7, 2.8, and 2.9 M⊕ respectively. This discovery is based on 373 high-quality radial velocity measurements taken by HARPS over 13 years. Given the low masses of the planets, the signal-to-noise ratio is not sufficient to constrain the planet eccentricities. However, a preliminary dynamical analysis suggests that eccentricities should be typically lower than about 0.03 for the system to remain stable. With two pairs of planets with a period ratio lower than 1.5, with short orbital periods, low masses, and low eccentricities, HD 215152 is similar to the very compact multi-planet systems found by Kepler, which is very rare in radial-velocity surveys. This discovery proves that these systems can be reached with the radial-velocity technique, but characterizing them requires a huge amount of observations. | |
dc.format.extent | 9 | |
dc.format.extent | 2146851 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astronomy & Astrophysics | en |
dc.subject | Planets and satellites:general | en |
dc.subject | Planets and satellites: detection | en |
dc.subject | Planets and satellites: dynamical evolution and stability | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | NDAS | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | The HARPS search for southern extra-solar planets. XLIII. A compact system of four super-Earth planets orbiting HD 215152 | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. St Andrews Centre for Exoplanet Science | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | 10.1051/0004-6361/201732529 | |
dc.description.status | Peer reviewed | en |
dc.identifier.url | http://adsabs.harvard.edu/abs/2018arXiv180204631D | en |
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