Results 1 to 10 of about 7,767,873 (255)
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
exaly +3 more sources
Dust environment and dynamical history of a sample of short-period comets [PDF]
Astronomy and Astrophysics, 2014 14 pages, 25 figures, Accepted for publication in A& ...
José Juan López-Moreno +2 more
exaly +7 more sources
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
doaj +2 more sources
Deep learning-enabled size estimation of comets indicates a more dynamic early solar system [PDF]
Nature CommunicationsThe formation and evolution of the Solar System’s two major comet reservoirs, the Oort Cloud and the Scattered Disk, remain poorly constrained. Observations of comet flux imply a population ratio between these reservoirs that exceeds predictions from ...
Shunjing Zhao +4 more
doaj +2 more sources
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.
Scott Tremaine
exaly +2 more sources
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 ...
Scott Tremaine
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
doaj +1 more source
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
doaj +1 more source
Origin and Evolution of Short-period Comets [PDF]
The 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.
Nesvorny, D. +5 more
openaire +2 more sources
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
doaj +1 more source