11th Moscow International Solar System Symposium, 5-9 October 2020, IKI, Moscow, Russia, 11MS3-EP-14, (p. 353-355, https://ms2020.cosmos.ru/docs/Abstract_book_full_version_05.pdf, (p. 338-340, a hard copy) , 2020
Migration of planetesimals and probabilities of their collisions with exoplanets were studied for... more Migration of planetesimals and probabilities of their collisions with exoplanets were studied for the Proxima Centaury planetary system.
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Papers by Sergei Ipatov
researchers of the Laboratory of thermodynamics and
mathematical modeling of natural processes at the Vernadsky
Institute of Geochemistry and Analytical Chemistry of
the Russian Academy of Sciences in the field of cosmogony,
geochemistry and cosmochemistry. The main research
method is mathematical modeling using the restrictions
obtained from experimental studies of bodies of the Solar
System and exoplanetary systems. Verification of models is
also carried out by comparing the obtained results and
available experimental data. The article consists of four
sections reflecting the main directions of the laboratory’s
work. The section “Studies in the field of stellar-planetary
cosmogony is written by scientists under the leadership of
Academician M. Ya. Marov. The section includes studies of
the formation and evolution of dust clusters, primary bodies,
the terrestrial planets, and some exoplanets, the delivery of
water to the terrestrial planets, and the problem of the
asteroid-comet hazard. The sections containing the results of
the study of the internal structure of the satellites—the Moon
and Titan, were carried out under the guidance of the Corresponding
Member of RAS O. L. Kuskov. The section
“Estimation of the composition and mass of the ice component
in primary ice-rock bodies of the protoplanetary
disk” contains some results obtained by D.Sc. V. A. Dorofeeva
in the study of the behavior and conditions of accumulation
of volatile components in the early Solar System.
researchers of the Laboratory of thermodynamics and
mathematical modeling of natural processes at the Vernadsky
Institute of Geochemistry and Analytical Chemistry of
the Russian Academy of Sciences in the field of cosmogony,
geochemistry and cosmochemistry. The main research
method is mathematical modeling using the restrictions
obtained from experimental studies of bodies of the Solar
System and exoplanetary systems. Verification of models is
also carried out by comparing the obtained results and
available experimental data. The article consists of four
sections reflecting the main directions of the laboratory’s
work. The section “Studies in the field of stellar-planetary
cosmogony is written by scientists under the leadership of
Academician M. Ya. Marov. The section includes studies of
the formation and evolution of dust clusters, primary bodies,
the terrestrial planets, and some exoplanets, the delivery of
water to the terrestrial planets, and the problem of the
asteroid-comet hazard. The sections containing the results of
the study of the internal structure of the satellites—the Moon
and Titan, were carried out under the guidance of the Corresponding
Member of RAS O. L. Kuskov. The section
“Estimation of the composition and mass of the ice component
in primary ice-rock bodies of the protoplanetary
disk” contains some results obtained by D.Sc. V. A. Dorofeeva
in the study of the behavior and conditions of accumulation
of volatile components in the early Solar System.
the vicinity of the exoplanet “c” with a semi-major axis ac of about 1.5 AU were ejected into hyperbolic orbits in 10 Myr. Some planetesimals could collide with this exoplanet after 20 Myr. Only one of several hundreds of planetesimals from the vicinity of this exoplanet reached the orbit of the exoplanet “b” with a semi-major axis ab=0.0485 AU or the orbit of the exoplanet “d” with a semi-major axis ad=0.029 AU, but the probability of a collision of such planetesimal (that reached the orbits) with the exoplanets b and d can reach 1, and the collision probability averaged over all planetesimals from the vicinity of the exoplanet “c” was ~10-3. If averaged over all considered planetesimals from the vicinity of exoplanet “c”, the probability of a collision of a planetesimal with the exoplanet “b” or “d” is greater than the probability of a collision with the Earth of a planetesimal from the zone of the giant planets in the Solar System (which is less than 10-5 per one planetesimal). A lot of icy material could be delivered to the exoplanets “b” and “d”.