Results 1 to 10 of about 2,018 (158)
On nature of evolution of short-period comets. On the question of short-period comets evolution
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2007 The main hypothesis of short-period comets evolution are considered. Basing on the performed researches we conclude that the main sources of short-period comets are: main asteroid belt, relict asteroid belts between giant planets and the Kuiper belt.
A. F. Zausaev, A. A. Zausaev
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Origin and Evolution of Short-period Comets [PDF]
Astrophysical Journal, 2017 Abstract Comets are icy objects that orbitally evolve from the trans-Neptunian region into the inner solar system, where they are heated by solar radiation and become active due to the sublimation of water ice. Here we perform simulations in which cometary reservoirs are formed in the early solar system and evolved over 4.5 Gyr.
David Nesvorný +2 more
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The origin of short-period comets
Astrophysical Journal, 1988 The key results of an extensive series of numerical simulations of the evolution of comet orbits due to the gravitational perturbations of the giant planets are presented. The results show that the inclination distribution of comets with large perihelion that evolve to observable comets is approximately preserved.
Thomas Quinn, Scott Tremaine
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A survey on the distant activity of short period comets [PDF]
Astronomy and Astrophysics, 2009 Aims. The aim of this paper is to build up an inventory of observations of short period comets (SPCs) far from the Sun, and perform an analysis of general properties of the family, investigating the link between distant activity and present and historical orbital parameters.Methods.
E Mazzotta Epifani
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Planetary perturbations and the origins of short-period comets
Astrophysical Journal, 1990 To investigate the dynamical plausibility of possible sources for the short-period comets, a representative sample of comet orbits in the field of the sun and the giant planets was integrated, with the aim to determine whether the distribution of orbits from a proposed source that reach observable perihelia (q less than 2.5 AU) matches the observed ...
Thomas Quinn, Scott Tremaine
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Chaotic motion in a comet disk beyond Neptune - The delivery of short-period comets
Astronomical Journal, 1989 Recent Monte Carlo simulations have demonstrated that a source with a spherical distribution of orbital angular momenta such as the Oort Cloud cannot give rise to the highly flattened distribution of short-period comets. It was also demonstrated that the problem of delivery could be resolved if short-period comets originate in a low inclination disk of
exaly +2 more sources
The Astronomical Journal, 2023 Short-period comet 108P/Ciffreo is known for its peculiar double morphology, in which the nucleus is accompanied by a comoving, detached, diffuse “blob.” We report new observations of 108P/Ciffreo taken with the Hubble Space Telescope and the Nordic ...
Yoonyoung Kim +4 more
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CO and CO2 Productions Rates of Comets Observed by NEOWISE within Year 1 of the Reactivated Mission
The Planetary Science Journal, 2023 We report on the observed fluxes of the comets detected by NEOWISE during the first year of operations after the spacecraft’s reactivation. The sample included 57 comets.
Adeline Gicquel +4 more
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Comet P/2021 HS (PANSTARRS) and the Challenge of Detecting Low-activity Comets
The Planetary Science Journal, 2023 Jupiter-family comet (JFC) P/2021 HS (PANSTARRS) only exhibits a coma within a few weeks of its perihelion passage at 0.8 au, which is atypical for a comet.
Quanzhi Ye +10 more
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Analysis of CN Coma Morphology Features of Comet 21P/Giacobini–Zinner
The Planetary Science Journal, 2023 We analyze jet features found in the coma of comet 21P/Giacobini–Zinner (21P/GZ) during its 2018 perihelion passage using narrowband CN photometric imaging in order to determine the comet’s rotational period, and we constrain the CN gas outflow velocity ...
Charles Goldberg +2 more
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