caa a22 4500 467986886 CHVBK 20180323112534.0 cr unu---uuuuu 170328e19900901xx s 000 0 eng 10.1007/BF00049417 doi (NATIONALLICENCE)springer-10.1007/BF00049417 Capture of comets during the evolution of a star cluster and the origin of the Oort Cloud [Elektronische Daten] [Jia-Qing Zheng, Mauri Valtonen, Leena Valtaoja] It is generally assumed that the Solar System is surrounded by a swarm of comets, the so-called Oort Cloud, which contains approximately 1011 members. The observed comets belong to a small subsection of the Cloud, and they have very elongated orbits. The origin of the Cloud is presently unclear. Here we consider the possibility that the comets were born in a star cluster together with the Sun. We follow the evolution of the star cluster with its embedded swarm of comets and calculate the rate at which stars accumulate stable comet companions. We conclude that if the Oort Cloud of comets was born in this process, then the present day density of comets in interstellar space has to be high, and that comets make a significant contribution to the overall mass density of the Galaxy. Kluwer Academic Publishers, 1990 Oort cloud nationallicence comets nationallicence origin of comets nationallicence capture of comets nationallicence Zheng Jia-Qing Department of Physical Sciences, University of Turku, 20520, Turku, Finland aut Valtonen Mauri Department of Physical Sciences, University of Turku, 20520, Turku, Finland aut Valtaoja Leena Department of Physical Sciences, University of Turku, 20520, Turku, Finland aut Celestial Mechanics and Dynamical Astronomy Kluwer Academic Publishers 49/3(1990-09-01), 265-272 0923-2958 49:3<265 1990 49 10569 https://doi.org/10.1007/BF00049417 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00049417 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zheng Jia-Qing Department of Physical Sciences, University of Turku, 20520, Turku, Finland aut NATIONALLICENCE 700 1- Valtonen Mauri Department of Physical Sciences, University of Turku, 20520, Turku, Finland aut NATIONALLICENCE 700 1- Valtaoja Leena Department of Physical Sciences, University of Turku, 20520, Turku, Finland aut NATIONALLICENCE 773 0- Celestial Mechanics and Dynamical Astronomy Kluwer Academic Publishers 49/3(1990-09-01), 265-272 0923-2958 49:3<265 1990 49 10569 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer