PTYS/ASTR 206
... the recently discovered Eris is larger than Pluto. • In 2006, Pluto was downgraded to a new class of objects called “dwarf planets” – But the debate rages on ...
... the recently discovered Eris is larger than Pluto. • In 2006, Pluto was downgraded to a new class of objects called “dwarf planets” – But the debate rages on ...
The Long-Term Dynamical Evolution of Planetary Systems
... axis ak , eccentricity ek and inclination ik to the invariable plane, and M∗ is the mass of the host star. In absence of mean-motion resonances, to a good approximation, a remains constant for each planet, so AMD is also constant (e.g. Laskar 1997, though this result dates to Laplace), Excursions in ...
... axis ak , eccentricity ek and inclination ik to the invariable plane, and M∗ is the mass of the host star. In absence of mean-motion resonances, to a good approximation, a remains constant for each planet, so AMD is also constant (e.g. Laskar 1997, though this result dates to Laplace), Excursions in ...
The Solar System`s Post-Main Sequence Escape Boundary
... planet would react to stellar mass loss nearly equivalently to an isolated test particle on the same orbit. After each MERCURY timestep, we linearly interpolate the value of the Sun’s mass from the SSE output. This approximation is sufficient for numerical integrations which do not feature close enc ...
... planet would react to stellar mass loss nearly equivalently to an isolated test particle on the same orbit. After each MERCURY timestep, we linearly interpolate the value of the Sun’s mass from the SSE output. This approximation is sufficient for numerical integrations which do not feature close enc ...
PPT Format - HubbleSOURCE
... hazards for the New Horizons spacecraft They were later named Styx and Kerberos – despite the suggestion from Captain Kirk and Spock ...
... hazards for the New Horizons spacecraft They were later named Styx and Kerberos – despite the suggestion from Captain Kirk and Spock ...
Quark Presents: Holiday Tour of the Star System Sol
... B. Nebula flattens, forms rotating disk, matter concentrates in center C. Disk cools, forms particles that grow into planetesimals - composition varies with temperature/distance from star ...
... B. Nebula flattens, forms rotating disk, matter concentrates in center C. Disk cools, forms particles that grow into planetesimals - composition varies with temperature/distance from star ...
Extrasolar Planets: An Amateur`s Search
... Only two factors, the formation rate of suitable stars for planets, Rp, and the fraction of those stars actually with planets due to planet forming factors, fp, dictate the fraction of stars with extrasolar planets forming. Np in this case is the total number of extrasolar planets in the galaxy that ...
... Only two factors, the formation rate of suitable stars for planets, Rp, and the fraction of those stars actually with planets due to planet forming factors, fp, dictate the fraction of stars with extrasolar planets forming. Np in this case is the total number of extrasolar planets in the galaxy that ...
IAU GA, Prague, Aug 2006 - Spanish Virtual Observatory
... • Building a census of substellar objects implies the discovery of a statistically significant number of them through queries that combine attributes available from different archives. • This is an approach out of the scope of the "classical" methodology but that perfectly fits into the Virtual Obse ...
... • Building a census of substellar objects implies the discovery of a statistically significant number of them through queries that combine attributes available from different archives. • This is an approach out of the scope of the "classical" methodology but that perfectly fits into the Virtual Obse ...
The Human Orrery: a new educational tool for
... impossibly confusing when trying to explain the orrery or to find the planetary positions at any given calendar date. Similarly, an interval as long as 22 days can be ruled out, because Mercury would then have only four tiles, too few to indicate the shape of an ellipse. An eight-day timestep would ...
... impossibly confusing when trying to explain the orrery or to find the planetary positions at any given calendar date. Similarly, an interval as long as 22 days can be ruled out, because Mercury would then have only four tiles, too few to indicate the shape of an ellipse. An eight-day timestep would ...
UK Exoplanet community meeting 2017
... perspective of exo-planetary systems, whilst at the same time deepening our knowledge of Earth’s formation. Profound questions still remain as to the origin of Earth’s atmosphere, continents, and habitable climate, questions which are ultimately stymied by having only one natural laboratory in which ...
... perspective of exo-planetary systems, whilst at the same time deepening our knowledge of Earth’s formation. Profound questions still remain as to the origin of Earth’s atmosphere, continents, and habitable climate, questions which are ultimately stymied by having only one natural laboratory in which ...
![ori pro 02 semifin [sfn] - SwRI-Boulder`s](http://s1.studyres.com/store/data/005475037_1-57bfe7f4854fb7170a370f2b1ee14ae6-300x300.png)
ori pro 02 semifin [sfn] - SwRI-Boulder`s
... At present, Saturn orbits exterior to the strong 1:2 mean-motion resonance (MMR) with Jupiter. Fernández & Ip (1984) showed that as the giant planets scattered residual planetesimals, Jupiter would have migrated inward and Saturn, Uranus, and Neptune would have migrated outward. In this process, the ...
... At present, Saturn orbits exterior to the strong 1:2 mean-motion resonance (MMR) with Jupiter. Fernández & Ip (1984) showed that as the giant planets scattered residual planetesimals, Jupiter would have migrated inward and Saturn, Uranus, and Neptune would have migrated outward. In this process, the ...
A re-appraisal of the habitability of planets around M dwarf
... To deal with large numbers and phenomenology they can measure, but perhaps not understand, astronomers have a long history of using classification schemes that are not always intuitively understood by scientists in other fields or the general public. At the risk of offending some well-schooled reade ...
... To deal with large numbers and phenomenology they can measure, but perhaps not understand, astronomers have a long history of using classification schemes that are not always intuitively understood by scientists in other fields or the general public. At the risk of offending some well-schooled reade ...
A Reappraisal of The Habitability of Planets around M Dwarf Stars
... To deal with large numbers and phenomenology they can measure, but perhaps not understand, astronomers have a long history of using classification schemes that are not always intuitively understood by scientists in other fields or the general public. At the risk of offending some well-schooled reade ...
... To deal with large numbers and phenomenology they can measure, but perhaps not understand, astronomers have a long history of using classification schemes that are not always intuitively understood by scientists in other fields or the general public. At the risk of offending some well-schooled reade ...
UK Exoplanet community meeting 2017
... perspective of exo-planetary systems, whilst at the same time deepening our knowledge of Earth’s formation. Profound questions still remain as to the origin of Earth’s atmosphere, continents, and habitable climate, questions which are ultimately stymied by having only one natural laboratory in which ...
... perspective of exo-planetary systems, whilst at the same time deepening our knowledge of Earth’s formation. Profound questions still remain as to the origin of Earth’s atmosphere, continents, and habitable climate, questions which are ultimately stymied by having only one natural laboratory in which ...
1 A Re-appraisal of the Habitability of Planets Around M Dwarf Stars
... To deal with large numbers and phenomenology they can measure, but perhaps not understand, astronomers have a long history of using classification schemes that are not always intuitively understood by scientists in other fields or the general public. At the risk of offending some well-schooled reade ...
... To deal with large numbers and phenomenology they can measure, but perhaps not understand, astronomers have a long history of using classification schemes that are not always intuitively understood by scientists in other fields or the general public. At the risk of offending some well-schooled reade ...
Characterization of the four new transiting planets KOI
... The characterization of four new transiting extrasolar planets is presented here. KOI-188b and KOI-195b are bloated hot Saturns, with orbital periods of 3.8 and 3.2 days, and masses of 0.25 and 0.34 MJup . They are located in the low-mass range of known transiting, giant planets. KOI-192b has a simi ...
... The characterization of four new transiting extrasolar planets is presented here. KOI-188b and KOI-195b are bloated hot Saturns, with orbital periods of 3.8 and 3.2 days, and masses of 0.25 and 0.34 MJup . They are located in the low-mass range of known transiting, giant planets. KOI-192b has a simi ...
Core instability models of giant planet accretion – II. Forming
... form several cores in the same disc. Initially we start the simulation with a number N planets,0 of cores through the disc, separated by 10 rH . This could have important consequences on the final distribution of masses and semimajor axis of extrasolar planets, especially for the changes in the dyna ...
... form several cores in the same disc. Initially we start the simulation with a number N planets,0 of cores through the disc, separated by 10 rH . This could have important consequences on the final distribution of masses and semimajor axis of extrasolar planets, especially for the changes in the dyna ...
Finding KBO Flyby Targets for New Horizons
... We also considered the benefits of adjusting the Pluto encounter time to improve our ability to reach a particular KBO. Flexibility in encounter date increases the number of potential KBO targets, because Keplerian shear effectively tilts the cone of accessibility relative to Pluto and the KBO popul ...
... We also considered the benefits of adjusting the Pluto encounter time to improve our ability to reach a particular KBO. Flexibility in encounter date increases the number of potential KBO targets, because Keplerian shear effectively tilts the cone of accessibility relative to Pluto and the KBO popul ...
A sound nebula: the origin of the Solar System in the field of a
... It consists of trillions of small objects composed of dust and water, ammonia and methane ice and it is believed that these objects were scattered outwards by the gas giants at the planetary formation stage and then acquired distant circular orbits (out to about one light year) as a result of gravi ...
... It consists of trillions of small objects composed of dust and water, ammonia and methane ice and it is believed that these objects were scattered outwards by the gas giants at the planetary formation stage and then acquired distant circular orbits (out to about one light year) as a result of gravi ...
Chap1-Introduction - Groupe d`astrophysique de UdeM
... One thing is certain about this book: by the time you read it, parts of it will be out of date. The study of exoplanets, planets orbiting around stars other than the sun is a new and fastmoving field. ...
... One thing is certain about this book: by the time you read it, parts of it will be out of date. The study of exoplanets, planets orbiting around stars other than the sun is a new and fastmoving field. ...
Full Programme and Abstracts - UK Exoplanet community meeting
... perspective of exo-planetary systems, whilst at the same time deepening our knowledge of Earth’s formation. Profound questions still remain as to the origin of Earth’s atmosphere, continents, and habitable climate, questions which are ultimately stymied by having only one natural laboratory in which ...
... perspective of exo-planetary systems, whilst at the same time deepening our knowledge of Earth’s formation. Profound questions still remain as to the origin of Earth’s atmosphere, continents, and habitable climate, questions which are ultimately stymied by having only one natural laboratory in which ...
Document
... Asteroids, which are minor planets, and chunks of rock known as meteoroids, are other residents of our Solar System. We shall see how they and the comets are storehouses of information about the Solar System’s origin. Asteroids, meteoroids, and comets are suddenly in the news as astronomers are find ...
... Asteroids, which are minor planets, and chunks of rock known as meteoroids, are other residents of our Solar System. We shall see how they and the comets are storehouses of information about the Solar System’s origin. Asteroids, meteoroids, and comets are suddenly in the news as astronomers are find ...
Planet Formation - Worcester Polytechnic Institute
... scientific community is currently looking to stars outside of our own system to host planets that may have life on them. While many exoplanets are being found in systems across our galaxy with a wide range of sizes, compositions and proximity to the host star. The diversity of exoplanets clearly ind ...
... scientific community is currently looking to stars outside of our own system to host planets that may have life on them. While many exoplanets are being found in systems across our galaxy with a wide range of sizes, compositions and proximity to the host star. The diversity of exoplanets clearly ind ...
giant planet formation i. introduction
... (mostly in the form of H2 O), are also believed to be substantially enriched compared to a solar composition mixture, but are hidden deep in the atmosphere because of condensation. Although the two planets share many similarities (mass, magnetic eld, atmospheric structure), several factors point to ...
... (mostly in the form of H2 O), are also believed to be substantially enriched compared to a solar composition mixture, but are hidden deep in the atmosphere because of condensation. Although the two planets share many similarities (mass, magnetic eld, atmospheric structure), several factors point to ...
The Interior Structure, Composition, and Evolution of Giant Planets
... free energies Fmol and Fmet , respectively. The original EOS was constructed to fit the gas gun data by adjusting the effective molecular pair potential, and to fit their low reshock temperatures by addition of a fitting term Ffit in the total free energy. This term causes a region where ∇ad < 0 alo ...
... free energies Fmol and Fmet , respectively. The original EOS was constructed to fit the gas gun data by adjusting the effective molecular pair potential, and to fit their low reshock temperatures by addition of a fitting term Ffit in the total free energy. This term causes a region where ∇ad < 0 alo ...
The Interior Structure, Composition, and Evolution of Giant Planets
... free energies Fmol and Fmet , respectively. The original EOS was constructed to fit the gas gun data by adjusting the effective molecular pair potential, and to fit their low reshock temperatures by addition of a fitting term Ffit in the total free energy. This term causes a region where ∇ad < 0 alo ...
... free energies Fmol and Fmet , respectively. The original EOS was constructed to fit the gas gun data by adjusting the effective molecular pair potential, and to fit their low reshock temperatures by addition of a fitting term Ffit in the total free energy. This term causes a region where ∇ad < 0 alo ...
Dwarf planet
A dwarf planet is a planetary-mass object that is neither a planet nor a natural satellite. That is, it is in direct orbit of the Sun, and is massive enough for its shape to be in hydrostatic equilibrium under its own gravity, but has not cleared the neighborhood around its orbit.The term dwarf planet was adopted in 2006 as part of a three-way categorization of bodies orbiting the Sun, brought about by an increase in discoveries of objects farther away from the Sun than Neptune that rivaled Pluto in size, and finally precipitated by the discovery of an even more massive object, Eris. The exclusion of dwarf planets from the roster of planets by the IAU has been both praised and criticized; it was said to be the ""right decision"" by astronomer Mike Brown, who discovered Eris and other new dwarf planets, but has been rejected by Alan Stern, who had coined the term dwarf planet in 1990.The International Astronomical Union (IAU) currently recognizes five dwarf planets: Ceres, Pluto, Haumea, Makemake, and Eris. Brown criticizes this official recognition: ""A reasonable person might think that this means that there are five known objects in the solar system which fit the IAU definition of dwarf planet, but this reasonable person would be nowhere close to correct.""It is suspected that another hundred or so known objects in the Solar System are dwarf planets. Estimates are that up to 200 dwarf planets may be found when the entire region known as the Kuiper belt is explored, and that the number may exceed 10,000 when objects scattered outside the Kuiper belt are considered. Individual astronomers recognize several of these, and in August 2011 Mike Brown published a list of 390 candidate objects, ranging from ""nearly certain"" to ""possible"" dwarf planets. Brown currently identifies eleven known objects – the five accepted by the IAU plus 2007 OR10, Quaoar, Sedna, Orcus, 2002 MS4 and Salacia – as ""virtually certain"", with another dozen highly likely. Stern states that there are more than a dozen known dwarf planets.However, only two of these bodies, Ceres and Pluto, have been observed in enough detail to demonstrate that they actually fit the IAU's definition. The IAU accepted Eris as a dwarf planet because it is more massive than Pluto. They subsequently decided that unnamed trans-Neptunian objects with an absolute magnitude brighter than +1 (and hence a diameter of ≥838 km assuming a geometric albedo of ≤1) are to be named under the assumption that they are dwarf planets. The only two such objects known at the time, Makemake and Haumea, went through this naming procedure and were declared to be dwarf planets. The question of whether other likely objects are dwarf planets has never been addressed by the IAU. The classification of bodies in other planetary systems with the characteristics of dwarf planets has not been addressed.