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 Adri'an 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

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

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 and Halley-type short-period comets. Comets are given initial orbits with

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

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

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
...

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

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

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,

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 disks

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