FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2147196263> ?p ?o ?g. }

• W2147196263 abstract "The close-in planet orbiting GJ 436 presents a puzzling orbital eccentricity considering its very short orbital period. Given the age of the system, this planet should have been tidally circularized a long time ago. Many attempts to explain this were proposed in recent years, either involving abnormally weak tides, or the perturbing action of a distant companion. We address here the latter issue based on Kozai migration. We propose that GJ 436b was formerly located further away from the star and that it underwent a migration induced by a massive, inclined perturber via Kozai mechanism. In this context, the perturbations by the companion trigger high amplitude variations to GJ 436b that cause tides to act at periastron. Then the orbit tidally shrinks to reach its present day location. We numerically integrate the 3-body system including tides and General Relativity correction. We first show that starting from the present-day location of GJ 436b inevitably leads to damping the Kozai oscillations and to rapidly circularizing the planet. Conversely, starting from 5-10 times further away allows the onset of Kozai cycles. The tides act in peak eccentricity phases and reduce the semi-major axis of the planet. The net result is an evolution characterized by two phases: a first one with Kozai cycles and a slowly shrinking semi-major axis, and a second one once the planet gets out of the Kozai resonance characterized by a more rapid decrease. The timescale of this process appears in most cases much longer than the standard circularization time of the planet by a factor larger than 50. This model can provide a solution to the eccentricity paradox of GJ 436b. Depending on the various orbital configurations, it can take several Gyrs to GJ 436b to achieve a full orbital decrease and circularization. According to this scenario, we could be witnessing today the second phase of the scenario where the semi-major axis is already reduced while the eccentricity is still significant. We then explore the parameter space and derive in which conditions this model can be realistic given the age of the system. This yields constraints on the characteristics of the putative companion." @default.
• W2147196263 created "2016-06-24" @default.
• W2147196263 creator A5020741764 @default.
• W2147196263 creator A5034701856 @default.
• W2147196263 creator A5042933911 @default.
• W2147196263 creator A5043902535 @default.
• W2147196263 creator A5061808032 @default.
• W2147196263 date "2012-08-01" @default.
• W2147196263 modified "2023-09-25" @default.
• W2147196263 title "Dynamical evolution of the Gliese 436 planetary system - Kozai migration as a potential source for Gliese 436b's eccentricity" @default.
• W2147196263 cites W1619222075 @default.
• W2147196263 cites W1856003666 @default.
• W2147196263 cites W1971208128 @default.
• W2147196263 cites W1974677212 @default.
• W2147196263 cites W1981495405 @default.
• W2147196263 cites W1985990214 @default.
• W2147196263 cites W1986544723 @default.
• W2147196263 cites W1987648972 @default.
• W2147196263 cites W1989033868 @default.
• W2147196263 cites W2005738165 @default.
• W2147196263 cites W2018478616 @default.
• W2147196263 cites W2021080567 @default.
• W2147196263 cites W2025510941 @default.
• W2147196263 cites W2032193586 @default.
• W2147196263 cites W2037528580 @default.
• W2147196263 cites W2039898911 @default.
• W2147196263 cites W2040010407 @default.
• W2147196263 cites W2047421713 @default.
• W2147196263 cites W2049324310 @default.
• W2147196263 cites W2049843688 @default.
• W2147196263 cites W2051772069 @default.
• W2147196263 cites W2060170481 @default.
• W2147196263 cites W2060400964 @default.
• W2147196263 cites W2062162463 @default.
• W2147196263 cites W2067824076 @default.
• W2147196263 cites W2072902973 @default.
• W2147196263 cites W2077210150 @default.
• W2147196263 cites W2079898038 @default.
• W2147196263 cites W2082475669 @default.
• W2147196263 cites W2087168055 @default.
• W2147196263 cites W2088627109 @default.
• W2147196263 cites W2095396708 @default.
• W2147196263 cites W2096746007 @default.
• W2147196263 cites W2104252037 @default.
• W2147196263 cites W2105847318 @default.
• W2147196263 cites W2123206376 @default.
• W2147196263 cites W2127282085 @default.
• W2147196263 cites W2130350225 @default.
• W2147196263 cites W2134217601 @default.
• W2147196263 cites W2142254839 @default.
• W2147196263 cites W2142735093 @default.
• W2147196263 cites W2153705759 @default.
• W2147196263 cites W2168699486 @default.
• W2147196263 cites W3101619871 @default.
• W2147196263 cites W3102833147 @default.
• W2147196263 hasPublicationYear "2012" @default.
• W2147196263 type Work @default.
• W2147196263 sameAs 2147196263 @default.
• W2147196263 citedByCount "2" @default.
• W2147196263 countsByYear W21471962632015 @default.
• W2147196263 countsByYear W21471962632016 @default.
• W2147196263 crossrefType "posted-content" @default.
• W2147196263 hasAuthorship W2147196263A5020741764 @default.
• W2147196263 hasAuthorship W2147196263A5034701856 @default.
• W2147196263 hasAuthorship W2147196263A5042933911 @default.
• W2147196263 hasAuthorship W2147196263A5043902535 @default.
• W2147196263 hasAuthorship W2147196263A5061808032 @default.
• W2147196263 hasBestOaLocation W21471962631 @default.
• W2147196263 hasConcept C121332964 @default.
• W2147196263 hasConcept C17744445 @default.
• W2147196263 hasConcept C190538878 @default.
• W2147196263 hasConcept C199539241 @default.
• W2147196263 hasConcept C87355193 @default.
• W2147196263 hasConceptScore W2147196263C121332964 @default.
• W2147196263 hasConceptScore W2147196263C17744445 @default.
• W2147196263 hasConceptScore W2147196263C190538878 @default.
• W2147196263 hasConceptScore W2147196263C199539241 @default.
• W2147196263 hasConceptScore W2147196263C87355193 @default.
• W2147196263 hasLocation W21471962631 @default.
• W2147196263 hasLocation W21471962632 @default.
• W2147196263 hasLocation W21471962633 @default.
• W2147196263 hasLocation W21471962634 @default.
• W2147196263 hasOpenAccess W2147196263 @default.
• W2147196263 hasPrimaryLocation W21471962631 @default.
• W2147196263 hasRelatedWork W2017899146 @default.
• W2147196263 hasRelatedWork W2124499858 @default.
• W2147196263 hasRelatedWork W26416457 @default.
• W2147196263 hasRelatedWork W2754003268 @default.
• W2147196263 hasRelatedWork W2797655098 @default.
• W2147196263 hasRelatedWork W3092817918 @default.
• W2147196263 hasRelatedWork W3101412719 @default.
• W2147196263 hasRelatedWork W3101511517 @default.
• W2147196263 hasRelatedWork W3105206735 @default.
• W2147196263 hasRelatedWork W3125596530 @default.
• W2147196263 isParatext "false" @default.
• W2147196263 isRetracted "false" @default.
• W2147196263 magId "2147196263" @default.
• W2147196263 workType "article" @default.