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Institution

Hazard Community and Technical College

EducationHazard, Kentucky, United States
About: Hazard Community and Technical College is a education organization based out in Hazard, Kentucky, United States. It is known for research contribution in the topics: Solar System & Roche limit. The organization has 3 authors who have published 14 publications receiving 187 citations.

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Journal ArticleDOI
TL;DR: A review of the current understanding of the solar system for the exoplanetary science community can be found in this paper, with a focus on the processes thought to have shaped the system we see today.
Abstract: Over the past three decades, we have witnessed one of the great revolutions in our understanding of the cosmos - the dawn of the Exoplanet Era. Where once we knew of just one planetary system (the Solar system), we now know of thousands, with new systems being announced on a weekly basis. Of the thousands of planetary systems we have found to date, however, there is only one that we can study up-close and personal - the Solar system. In this review, we describe our current understanding of the Solar system for the exoplanetary science community - with a focus on the processes thought to have shaped the system we see today. In section one, we introduce the Solar system as a single well studied example of the many planetary systems now observed. In section two, we describe the Solar system's small body populations as we know them today - from the two hundred and five known planetary satellites to the various populations of small bodies that serve as a reminder of the system's formation and early evolution. In section three, we consider our current knowledge of the Solar system's planets, as physical bodies. In section four, we discuss the research that has been carried out into the Solar system's formation and evolution, with a focus on the information gleaned as a result of detailed studies of the system's small body populations. In section five, we discuss our current knowledge of planetary systems beyond our own - both in terms of the planets they host, and in terms of the debris that we observe orbiting their host stars. As we learn ever more about the diversity and ubiquity of other planetary systems, our Solar system will remain the key touchstone that facilitates our understanding and modelling of those newly found systems, and we finish section five with a discussion of the future surveys that will further expand that knowledge.

75 citations

Journal ArticleDOI
TL;DR: In this article, the regeneration of a flue gas desulfurizing agent by using bipolar membrane electrodialysis (BMED) with sodium sulfate (Na2SO4) as the supporting and rinsing electrolyte, and piperazine sulfate as a model compound for the heat stable salt formed in the process of desulfuring.
Abstract: An experimental study was carried out on the regeneration of a flue-gas desulfurizing agent by using bipolar membrane electrodialysis (BMED) with sodium sulfate (Na2SO4) as the supporting and rinsing electrolyte, and piperazine sulfate (Pz·H2SO4) as a model compound for the heat stable salt formed in the process of desulfurizing. The results indicate that the low energy consumption and high current efficiency are achieved when applying electrolyte solutions with a concentration range about 0.3∼0.4 mol/L, piperazine sulfate solution with a concentration range about 0.08∼0.13 mol/L, and BMED stack of BP-C-C configuration. The results also indicate that when applying a high current density to the BMED stack, it has a high current efficiency and energy consumption. The process cost is estimated to be $0.96/kg Pz for the regeneration of piperazine with the laboratory-scale experimental equipment, indicating that the process is not only scientifically novel but also economically feasible and attractive besides its potential environmental benefits. © 2005 American Institute of Chemical Engineers AIChE J, 2006

57 citations

Journal ArticleDOI
TL;DR: In this article, the authors study the dynamical history of the Chariklo system by integrating almost 36,000 clones backward in time for 1 Gyr under the influence of the Sun and the four giant planets.
Abstract: Chariklo is the only small solar system body confirmed to have rings. Given the instability of its orbit, the presence of rings is surprising, and their origin remains poorly understood. In this work, we study the dynamical history of the Chariklo system by integrating almost 36,000 Chariklo clones backward in time for 1 Gyr under the influence of the Sun and the four giant planets. By recording all close encounters between the clones and planets, we investigate the likelihood that Chariklo’s rings could have survived since its capture to the Centaur population. Our results reveal that Chariklo’s orbit occupies a region of stable chaos, resulting in its orbit being marginally more stable than those of the other Centaurs. Despite this, we find that it was most likely captured to the Centaur population within the last 20 Myr, and that its orbital evolution has been continually punctuated by regular close encounters with the giant planets. The great majority (>99%) of those encounters within 1 Hill radius of the planet have only a small effect on the rings. We conclude that close encounters with giant planets have not had a significant effect on the ring structure. Encounters within the Roche limit of the giant planets are rare, making ring creation through tidal disruption unlikely.

19 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present a review of the current understanding of the solar system for the exoplanetary science community, with a focus on the processes thought to have shaped the system we see today.
Abstract: Over the past three decades, we have witnessed one of the great revolutions in our understanding of the cosmos — the dawn of the Exoplanet Era. Where once we knew of just one planetary system (the solar system), we now know of thousands, with new systems being announced on a weekly basis. Of the thousands of planetary systems we have found to date, however, there is only one that we can study up-close and personal—the solar system. In this review, we describe our current understanding of the solar system for the exoplanetary science community — with a focus on the processes thought to have shaped the system we see today. In section one, we introduce the solar system as a single well studied example of the many planetary systems now observed. In section two, we describe the solar systemʼs small body populations as we know them today—from the two hundred and five known planetary satellites to the various populations of small bodies that serve as a reminder of the systemʼs formation and early evolution. In section three, we consider our current knowledge of the solar systemʼs planets, as physical bodies. In section four we discuss the research that has been carried out into the solar systemʼs formation and evolution, with a focus on the information gleaned as a result of detailed studies of the systemʼs small body populations. In section five, we discuss our current knowledge of planetary systems beyond our own — both in terms of the planets they host, and in terms of the debris that we observe orbiting their host stars. As we learn ever more about the diversity and ubiquity of other planetary systems, our solar system will remain the key touchstone that facilitates our understanding and modeling of those newly found systems, and we finish section five with a discussion of the future surveys that will further expand that knowledge.

19 citations

01 Oct 2017
TL;DR: In this article, the authors study the dynamical history of the Chariklo system by integrating almost 36,000 clones backward in time for 1 Gyr under the influence of the Sun and the four giant planets.
Abstract: Chariklo is the only small solar system body confirmed to have rings. Given the instability of its orbit, the presence of rings is surprising, and their origin remains poorly understood. In this work, we study the dynamical history of the Chariklo system by integrating almost 36,000 Chariklo clones backward in time for 1 Gyr under the influence of the Sun and the four giant planets. By recording all close encounters between the clones and planets, we investigate the likelihood that Chariklo’s rings could have survived since its capture to the Centaur population. Our results reveal that Chariklo’s orbit occupies a region of stable chaos, resulting in its orbit being marginally more stable than those of the other Centaurs. Despite this, we find that it was most likely captured to the Centaur population within the last 20 Myr, and that its orbital evolution has been continually punctuated by regular close encounters with the giant planets. The great majority (>99%) of those encounters within 1 Hill radius of the planet have only a small effect on the rings. We conclude that close encounters with giant planets have not had a significant effect on the ring structure. Encounters within the Roche limit of the giant planets are rare, making ring creation through tidal disruption unlikely.

17 citations


Authors

Showing all 3 results

NameH-indexPapersCitations
Jeremy Wood613137
Mona L. Jacobs1148
Richard E. Holl114
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20202
20194
20181
20175
20061
20051