An interstellar origin for high-inclination Centaurs
نویسندگان
چکیده
منابع مشابه
The origin of the Kuiper Belt high–inclination population
I simulate the orbital evolution of the four major planets and a massive primordial planetesimal disk composed of 10 objects, which perturb the planets but not themselves. As Neptune migrates by energy and angular momentum exchange with the planetesimals, a large number of primordial Neptune-scattered objects are formed. These objects may experience secular, Kozai, and mean motion resonances th...
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Background: Excesses of B have been correlated with beryllium content in calcium-aluminum-rich inclusions (CAIs), showing that the objects incorporated the short-lived (t1/e = 2.18 Myr) radionuclide Be when they formed [1-5]. The “canonical” Be / Be ratio has been taken to be 9 × 10−4 [1]. Of the 16 CAIs and three hibonite residues [6] measured to date, all are within a factor of 2 of this valu...
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The propagation of a shock wave into an interstellar medium is investigated by two-dimensional numerical hydrodynamic calculation with cooling, heating and thermal conduction. We present results of the high-resolution two-dimensional calculations to follow the fragmentation due to the thermal instability in a shock-compressed layer. We find that geometrically thin cooling layer behind the shock...
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On or about 2012 August 25, the Voyager 1 spacecraft crossed the heliopause into the nearby interstellar plasma. In the nearly three years that the spacecraft has been in interstellar space, three notable particle and field disturbances have been observed, each apparently associated with a shock wave propagating outward from the Sun. Here, we present a detailed analysis of the third and most im...
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Over the last decade, we have made great strides in better understanding dust composition and evolution in dense clouds and the diffuse interstellar medium (ISM). Thanks to improvements in IR detector sensitivity on ground-based telescopes and the Spitzer Space Telescope mission, we are no longer limited to a handful of bright background stars in order to study dust composition in quiescent den...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2020
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/staa712