| |  Online-Ressource |
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| Verfasst von: | Sikora, James [VerfasserIn]  |
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| | Rowe, Jason [VerfasserIn] |
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| | Barat, Saugata [VerfasserIn] |
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| | Bean, Jacob L. [VerfasserIn] |
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| | Brady, Madison [VerfasserIn] |
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| | Désert, Jean-Michel [VerfasserIn] |
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| | Feinstein, Adina D. [VerfasserIn] |
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| | Gilbert, Emily A. [VerfasserIn] |
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| | Henry, Gregory [VerfasserIn] |
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| | Kasper, David [VerfasserIn] |
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| | Lizotte, Déreck-Alexandre [VerfasserIn] |
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| | Matesic, Michael R. B. [VerfasserIn] |
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| | Panwar, Vatsal [VerfasserIn] |
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| | Seifahrt, Andreas [VerfasserIn] |
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| | Shivkumar, Hinna [VerfasserIn] |
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| | Stefánsson, Gudmundur [VerfasserIn] |
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| | Stürmer, Julian [VerfasserIn] |
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| Titel: | Updated planetary mass constraints of the young V1298 tau system using MAROON-X |
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| Verf.angabe: | James Sikora, Jason Rowe, Saugata Barat, Jacob L. Bean, Madison Brady, Jean-Michel Désert, Adina D. Feinstein, Emily A. Gilbert, Gregory Henry, David Kasper, Déreck-Alexandre Lizotte, Michael R. B. Matesic, Vatsal Panwar, Andreas Seifahrt, Hinna Shivkumar, Gudmundur Stefánsson, and Julian Stürmer |
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| Jahr: | 2023 |
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| Umfang: | 15 S. |
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| Illustrationen: | Illustrationen |
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| Fussnoten: | Veröffentlicht: 24. Mai 2023 ; Gesehen am 26.07.2023 |
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| Titel Quelle: | Enthalten in: The astronomical journal |
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| Ort Quelle: | Washington, DC : AAS Publishing, American Astronomical Society, 1998 |
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| Jahr Quelle: | 2023 |
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| Band/Heft Quelle: | 165(2023), 6, Artikel-ID 250, Seite 1-15 |
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| ISSN Quelle: | 1538-3881 |
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| Abstract: | The early K-type T-Tauri star, V1298 Tau (V = 10 mag, age ≈ 20-30 Myr) hosts four transiting planets with radii ranging from 4.9 to 9.6 R ⊕. The three inner planets have orbital periods of ≈8-24 days while the outer planet’s period is poorly constrained by single transits observed with K2 and the Transiting Exoplanet Survey Satellite (TESS). Planets b, c, and d are proto-sub-Neptunes that may be undergoing significant mass loss. Depending on the stellar activity and planet masses, they are expected to evolve into super-Earths/sub-Neptunes that bound the radius valley. Here we present results of a joint transit and radial velocity (RV) modeling analysis, which includes recently obtained TESS photometry and MAROON-X RV measurements. Assuming circular orbits, we obtain a low-significance (≈2σ) RV detection of planet c, implying a mass of and a conservative 2σ upper limit of <39 M ⊕. For planets b and d, we derive 2σ upper limits of M b < 159 M ⊕ and M d < 41 M ⊕, respectively. For planet e, plausible discrete periods of P e > 55.4 days are ruled out at the 3σ level while seven solutions with 43.3 < P e/d < 55.4 are consistent with the most probable 46.768131 ± 000076 days solution within 3σ. Adopting the most probable solution yields a 2.6σ RV detection with a mass of 0.66 ± 0.26 M Jup. Comparing the updated mass and radius constraints with planetary evolution and interior structure models shows that planets b, d, and e are consistent with predictions for young gas-rich planets and that planet c is consistent with having a water-rich core with a substantial (∼5% by mass) H2 envelope. |
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| DOI: | doi:10.3847/1538-3881/acc865 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
kostenfrei: Volltext: https://doi.org/10.3847/1538-3881/acc865 |
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| | kostenfrei: Volltext: https://dx.doi.org/10.3847/1538-3881/acc865 |
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| | DOI: https://doi.org/10.3847/1538-3881/acc865 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| K10plus-PPN: | 1853672904 |
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| Verknüpfungen: | → Zeitschrift |
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Updated planetary mass constraints of the young V1298 tau system using MAROON-X / Sikora, James [VerfasserIn]; 2023 (Online-Ressource)
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