The Buildup of a Tightly Bound Comet Cloud around an Early Sun Immersed in a Dense Galactic Environment: Numerical Experiments

@article{Fernndez2000TheBO,
  title={The Buildup of a Tightly Bound Comet Cloud around an Early Sun Immersed in a Dense Galactic Environment: Numerical Experiments},
  author={Julio A. Fern{\'a}ndez and Adrian Brunini},
  journal={Icarus},
  year={2000},
  volume={145},
  pages={580-590}
}
We simulate numerically the buildup of a comet reservoir around the early Sun assumed to be still immersed in the placental molecular gas that gave birth to it, and to be gravitationally bound to other young stars formed out of the same gas. We show that under certain reasonable assumptions about the early galactic environment of the Sun, an inner core of the Oort cloud of radius from a few 102 AU to a few 103 AU forms on a time scale of a few million year. Jupiter and Saturn are the main… 
Re-viewing an Old Comet Reservoir
TLDR
Results of a simulation suggest that a substantial fraction of LPCs (perhaps the majority) are stored in an “inner” Oort Cloud reservoir considerably closer to the Sun than expected, at distances of around 3000 to 10,000 AU.
Origin of Comet Nuclei and Dynamics
Abstract We present a review of the main physical features of comet nuclei, their birthplaces and the dynamical processes that allow some of them to reach the Sun’s neighborhood and become
Earth , Moon , and Planets A Model for the Common Origin of Jupiter Family and Halley Type
A numerical simulation of the Oort cloud is used to explain the observed orbital distributions and numbers of Jupiter-family and Halley-type shortperiod comets. Comets are given initial orbits with
Embedded star clusters and the formation of the Oort cloud. III. Evolution of the inner cloud during the Galactic phase
Abstract In a previous publication [Brasser, R., Duncan, M.J., Levison, H.F., 2006. Icarus 184, 59–82], models of the inner Oort cloud were built which included the effect of an embedded star cluster
A Model for the Common Origin of Jupiter Family and Halley Type Comets
A numerical simulation of the Oort cloud is used to explain the observed orbital distributions and numbers of Jupiter-family (JF) and Halley-type (HT) short-period (SP) comets. Comets are given
Embedded star clusters and the formation of the Oort Cloud
Abstract Observations suggest most stars originate in clusters embedded in giant molecular clouds [Lada, C.J., Lada, E.A., 2003. Annu. Rev. Astron. Astrophys. 41, 57–115]. Our Solar System likely
Effects of the Planar Galactic Tides and Stellar Mass on Comet Cloud Dynamics
We report the first results of a research program to explore the sensitivity of the orbits of Oort cloud comets to changes in the strength of the Galactic tides in the plane of the disk and also to
The simulation of the outer Oort cloud formation - The first giga-year of the evolution
Aims. Considering a model of an initial disk of planetesimals that consists of 10 038 test particles, we simulate the formation of distant-comet reservoirs for the first 1 Gyr. Since only the outer
Stellar Flybys Interrupting Planet–Planet Scattering Generates Oort Planets
Wide-orbit exoplanets are starting to be detected, and planetary formation models are under development to understand their properties. We propose a population of "Oort" planets around other stars,
The Destruction of an Oort Cloud in a rich stellar cluster
It is possible that the formation of the Oort Cloud dates back to the earliest epochs of solar system history. At that time, the Sun was almost certainly a member of the stellar cluster, where it was
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 23 REFERENCES
The Formation of the Oort Cloud and the Primitive Galactic Environment
We analyze the conditions of formation of the Oort cloud from icy planetesimals scattered by the accreting outer planets. The combined effect of planetary and external perturbations is considered to
Paleodynamics: Solar System Formation and the Early Environment of the Sun
Our present paradigm of the formation of stars and planetary systems suggests that the early Solar System may have existed in much denser environments than the galactic disk, e.g., the cores of giant
Evolution of comet orbits under the perturbing influence of the giant planets and nearby stars
The orbital evolution of 500 hypothetical comets during 109 years is studied numerically. It is assumed that the birthplace of such comets was the region of Uranus and Neptune from where they were
Comet showers and the steady-state infall of comets from the Oort cloud
The appearance of an inner edge to the Oort comet cloud at a semimajor axis of a = (1--2) x 10/sup 4/ AU is an observational artifact. Stellar perturbations are frequent enough and strong enough to
Origin and dynamics of comets and star formation
Abstract Several important consequences that would arise for the solar system's comet population if the Sun formed in an embedded star cluster are outlined. Owing to the higher stellar number density
Formation of the Giant Planets by Concurrent Accretion of Solids and Gas
New numerical simulations of the formation of the giant of the second phase. planets are presented, in which for the first time both the gas and The actual rates at which the giant planets accreted
Protostellar jets irradiated by massive stars
The formation of solar-type stars is a gradual process during which they accrete mass from the dense disks and cloud cores that surround them. This accretion requires the release of angular momentum,
Numerical simulations of the accretion of Uranus and Neptune
Abstract The accretion process of the outer planets was one of the most collective phenomena during the formation of the solar system. From the region of the terrestrial planets up to its outermost
Disk Mass Limits and Lifetimes of Externally Irradiated Young Stellar Objects Embedded in the Orion Nebula
?????We present 1.3 mm wavelength interferometric observations of externally irradiated young stellar objects (proplyds) embedded within the Orion Nebula, including the three largest circumstellar
The mass of the Oort cloud
The total mass of comets in the Oort cloud is calculated. The distribution of cometary masses is found based on the observed distribution of cometary magnitudes corrected for observational selection
...
1
2
3
...