منابع مشابه
Kepler-47: a transiting circumbinary multiplanet system.
We report the detection of Kepler-47, a system consisting of two planets orbiting around an eclipsing pair of stars. The inner and outer planets have radii 3.0 and 4.6 times that of Earth, respectively. The binary star consists of a Sun-like star and a companion roughly one-third its size, orbiting each other every 7.45 days. With an orbital period of 49.5 days, 18 transits of the inner planet ...
متن کاملStellar spin-orbit misalignment in a multiplanet system.
Stars hosting hot Jupiters are often observed to have high obliquities, whereas stars with multiple coplanar planets have been seen to have low obliquities. This has been interpreted as evidence that hot-Jupiter formation is linked to dynamical disruption, as opposed to planet migration through a protoplanetary disk. We used asteroseismology to measure a large obliquity for Kepler-56, a red gia...
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Abstract—A finite element procedure for three-dimensional adaptive trusses using shape memory alloys is formulated in the present study, in which the extended form of Brinson’s constitutive equation considering asymmetric tensile and compressive behavior is expressed in a tangentially incremental form. The validity of the present computational modeling is demonstrated by conducting numerical st...
متن کامل["Plus est en toi"].
ltimamente se han acercado a mí distinguidos miembros de la Sociedad Mexicana de Cardiología para preguntarme sobre el origen y el significado del lema de la Sociedad: “Plus est en toi ”. Hace más de 20 años que el lema fue adoptado por voto unánime de los Socios. Con el objeto de dar respuesta a la inquietud de los miembros jóvenes y actualizar la importancia que para la Sociedad tiene su lema...
متن کاملStability of the Directly Imaged Multiplanet System Hr 8799: Resonance and Masses
A new era of directly imaged extrasolar planets has produced a three-planet system (Marois et al. 2008), where the masses of the planets have been estimated by untested cooling models. We point out that the nominal circular, face-on orbits of the planets lead to a dynamical instability in ∼ 10 yr, a factor of at least 100 shorter than the estimated age of the star. Relaxing the face-on assumpti...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2020
ISSN: 1538-3881
DOI: 10.3847/1538-3881/aba124