June, 2001 AAS poster - David P. Bennett
... The VISTA telescope has recently been funded by the UK for construction in Paranal, the site of the VLT. It is a 4m wide FOV telescope which can image 2.25 square degrees. Based upon estimates of planet detection sensitivity in a 1997 ESO report by Sackett, a single-site microlensing planet search p ...
... The VISTA telescope has recently been funded by the UK for construction in Paranal, the site of the VLT. It is a 4m wide FOV telescope which can image 2.25 square degrees. Based upon estimates of planet detection sensitivity in a 1997 ESO report by Sackett, a single-site microlensing planet search p ...
1. INTRODUCTION
... Doppler measurements of existing and future planets can help ascertain the occurrence and character of multipleplanet systems. The broad goals of the precision Doppler surveys include the following : (1) detection of several hundred planets, sufficient to construct statistically meaningful distribut ...
... Doppler measurements of existing and future planets can help ascertain the occurrence and character of multipleplanet systems. The broad goals of the precision Doppler surveys include the following : (1) detection of several hundred planets, sufficient to construct statistically meaningful distribut ...
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 ...
Eris is Pluto`s Twin This diagram shows the path of a faint star during
... planet to dwarf planet in 2006. Eris is currently three times further from the Sun than Pluto. Studying these dwarf planets can help astrobiologists understand the different types of celestial bodies that can exist in orbit around stars. This information is useful in determining how and where to sea ...
... planet to dwarf planet in 2006. Eris is currently three times further from the Sun than Pluto. Studying these dwarf planets can help astrobiologists understand the different types of celestial bodies that can exist in orbit around stars. This information is useful in determining how and where to sea ...
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 ...
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 ...
Characterization of the four new transiting planets KOI
... giant planets. KOI-192b has a similar mass (0.29 MJup ) but a longer orbital period of 10.3 days. This places it in a domain where only a few planets are known. KOI-830b, finally, with a mass of 1.27 MJup and a period of 3.5 days, is a typical hot Jupiter. The four planets have radii of 0.98, 1.09, ...
... giant planets. KOI-192b has a similar mass (0.29 MJup ) but a longer orbital period of 10.3 days. This places it in a domain where only a few planets are known. KOI-830b, finally, with a mass of 1.27 MJup and a period of 3.5 days, is a typical hot Jupiter. The four planets have radii of 0.98, 1.09, ...
The Search for Exoplanets - Worcester Polytechnic Institute
... Three principal objectives were identified at the onset of project work. These objectives were defined to provide a clear progression of development of the project, and are listed below. Stage 1 Defined the period under which a general overview of the exoplanetary sciences was conducted. The goal of ...
... Three principal objectives were identified at the onset of project work. These objectives were defined to provide a clear progression of development of the project, and are listed below. Stage 1 Defined the period under which a general overview of the exoplanetary sciences was conducted. The goal of ...
Changes in a scientific concept: what is a planet? - Philsci
... and Jupiter. On January 1, 1801, Italian astronomer Giuseppe Piazzi (who did not take part to the search) discovered by accident Ceres. Its distance from the Sun was very close to the value predicted by Titius-Bode’s law, and thus Ceres was immediately regarded as the missing planet. In 1802 the Ge ...
... and Jupiter. On January 1, 1801, Italian astronomer Giuseppe Piazzi (who did not take part to the search) discovered by accident Ceres. Its distance from the Sun was very close to the value predicted by Titius-Bode’s law, and thus Ceres was immediately regarded as the missing planet. In 1802 the Ge ...
KS1 Education Guide - Immersive Theatres
... d) The stars 7) The dwarf planet that is located past the planet Neptune is called: a) Ceres b) Pluto c) Earth d) Jupiter 8) The only planet in the solar system that we know supports life. a) Ceres b) Pluto c) Earth d) Jupiter 9) A natural body visible in the sky especially at night that gives off l ...
... d) The stars 7) The dwarf planet that is located past the planet Neptune is called: a) Ceres b) Pluto c) Earth d) Jupiter 8) The only planet in the solar system that we know supports life. a) Ceres b) Pluto c) Earth d) Jupiter 9) A natural body visible in the sky especially at night that gives off l ...
The Formation of Systems with Tightly
... In contrast to the isolated solid picture, the CAAD reveals that, if large and small solids remain coupled, then the cloud drift speed can reach small terminal drift speeds for a wide range of solid sizes and q (dN/ds ∝ sq ). Figure 2 shows the results for five different ensembles. Each ensemble con ...
... In contrast to the isolated solid picture, the CAAD reveals that, if large and small solids remain coupled, then the cloud drift speed can reach small terminal drift speeds for a wide range of solid sizes and q (dN/ds ∝ sq ). Figure 2 shows the results for five different ensembles. Each ensemble con ...
Habitability of super-Earth planets around main
... early F stars) in the context of exobiology. Towards the low mass limit at about 0.5 M⊙, there are virtually no stellar evolutionary changes for these stars while being on the mainsequence owing to the current age of the Universe. However, regarding M-type stars, adverse influences on the origin and ...
... early F stars) in the context of exobiology. Towards the low mass limit at about 0.5 M⊙, there are virtually no stellar evolutionary changes for these stars while being on the mainsequence owing to the current age of the Universe. However, regarding M-type stars, adverse influences on the origin and ...
Core instability models of giant planet accretion – II. Forming
... rates on the final mass distribution of extrasolar planets, and found a strong dependence. However, our simple model allowed us to form only one core per disc and did not allow us to consider the dynamical evolution of the cores or the planetesimal disc. In this paper, we have improved the model int ...
... rates on the final mass distribution of extrasolar planets, and found a strong dependence. However, our simple model allowed us to form only one core per disc and did not allow us to consider the dynamical evolution of the cores or the planetesimal disc. In this paper, we have improved the model int ...
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 ...
an Educator`s GuidE
... Until very recently, planets outside our own solar system existed only in our imaginations. Scientists had been hypothesizing about their existence for centuries, but they did not have the technology required for definitive proof. It was not until 1992 that astronomers Aleksander Wolszczan and Dale ...
... Until very recently, planets outside our own solar system existed only in our imaginations. Scientists had been hypothesizing about their existence for centuries, but they did not have the technology required for definitive proof. It was not until 1992 that astronomers Aleksander Wolszczan and Dale ...
an Educator`s GuidE - Museum of Science, Boston
... Until very recently, planets outside our own solar system existed only in our imaginations. Scientists had been hypothesizing about their existence for centuries, but they did not have the technology required for definitive proof. It was not until 1992 that astronomers Aleksander Wolszczan and Dale ...
... Until very recently, planets outside our own solar system existed only in our imaginations. Scientists had been hypothesizing about their existence for centuries, but they did not have the technology required for definitive proof. It was not until 1992 that astronomers Aleksander Wolszczan and Dale ...
The Stability of Exomoons in the Habitable Zone
... conditions must then be upheld for quite some time to allow potential life to arise, meaning the orbit of the body must be fairly stable. In this investigation, all the objects at exoplanets.org (as of 2014-04-29) were evaluated to see which of these that could possibly have habitable moons, taking ...
... conditions must then be upheld for quite some time to allow potential life to arise, meaning the orbit of the body must be fairly stable. In this investigation, all the objects at exoplanets.org (as of 2014-04-29) were evaluated to see which of these that could possibly have habitable moons, taking ...
View PDF
... by analogy to the snow line (the orbital radius where water ice sublimates), and that a high concentration of carbon should accumulate there as carbon diffuses outward from interior to that radius and as carbon-rich grains spiral inwards toward that radius. Condensation lines like the tar line descr ...
... by analogy to the snow line (the orbital radius where water ice sublimates), and that a high concentration of carbon should accumulate there as carbon diffuses outward from interior to that radius and as carbon-rich grains spiral inwards toward that radius. Condensation lines like the tar line descr ...
- Astronomical Society of the Pacific
... fastest spaceship ever launched — it is already beyond Mars and the Asteroid Belt, and it has an encounter with Jupiter coming up on February 28, 2007. Not bad for it’s first year of flight, right? But the long haul to Pluto will take another 8 years — yes, the Solar System is really, really big. The ...
... fastest spaceship ever launched — it is already beyond Mars and the Asteroid Belt, and it has an encounter with Jupiter coming up on February 28, 2007. Not bad for it’s first year of flight, right? But the long haul to Pluto will take another 8 years — yes, the Solar System is really, really big. The ...
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 ...
Migration of giant planets in planetesimal discs
... 1995). This standard model predicts nearly circular planetary orbits, and giant planets with orbital distances $1 au from the central star, at which distance the temperature in the protostellar nebula is low enough for icy materials to condense (Boss 1995, 1996; Wuchterl 1993, 1996). Standard disc m ...
... 1995). This standard model predicts nearly circular planetary orbits, and giant planets with orbital distances $1 au from the central star, at which distance the temperature in the protostellar nebula is low enough for icy materials to condense (Boss 1995, 1996; Wuchterl 1993, 1996). Standard disc m ...
an Educator`s GuidE
... Until very recently, planets outside our own solar system existed only in our imaginations. Scientists had been hypothesizing about their existence for centuries, but they did not have the technology required for definitive proof. It was not until 1992 that astronomers Aleksander Wolszczan and Dale ...
... Until very recently, planets outside our own solar system existed only in our imaginations. Scientists had been hypothesizing about their existence for centuries, but they did not have the technology required for definitive proof. It was not until 1992 that astronomers Aleksander Wolszczan and Dale ...
L8 Condensation
... Grossman & Larimer (1974) computed the full sequence of condensation for a number of elements. The abundance of the different elements were taken to be solar and the total pressure was set to 10-4 atm. In order for the equilibrium condensation model to be correct, the various timescales for the chem ...
... Grossman & Larimer (1974) computed the full sequence of condensation for a number of elements. The abundance of the different elements were taken to be solar and the total pressure was set to 10-4 atm. In order for the equilibrium condensation model to be correct, the various timescales for the chem ...
Read an Excerpt!
... that “the outer region of the solar system, beyond the orbits of the planets, is occupied by a very large number of comparatively small bodies.” Edgeworth said these worlds were leftovers from the birth of the solar system. In 1951, American astronomer Gerard Kuiper suggested the same idea. For many ...
... that “the outer region of the solar system, beyond the orbits of the planets, is occupied by a very large number of comparatively small bodies.” Edgeworth said these worlds were leftovers from the birth of the solar system. In 1951, American astronomer Gerard Kuiper suggested the same idea. For many ...
Historical astronomy How Johannes Kepler Johannes
... he was 5. Kepler’s mother took him to a hilltop to view the Great Comet of 1577, whose tail arched across the entire sky. Kepler’s first job was as a math teacher in Graz, Austria. It was there that he embarked on his lifelong quest for harmony. In a flight of mathematical mysticism, he tried to lin ...
... he was 5. Kepler’s mother took him to a hilltop to view the Great Comet of 1577, whose tail arched across the entire sky. Kepler’s first job was as a math teacher in Graz, Austria. It was there that he embarked on his lifelong quest for harmony. In a flight of mathematical mysticism, he tried to lin ...
Planet
A planet (from Ancient Greek ἀστήρ πλανήτης (astēr planētēs), or πλάνης ἀστήρ (plánēs astēr), meaning ""wandering star"") is an astronomical object orbiting a star, brown dwarf, or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.The term planet is ancient, with ties to history, science, mythology, and religion. Several planets in the Solar System can be seen with the naked eye. These were regarded by many early cultures as divine, or as emissaries of deities. As scientific knowledge advanced, human perception of the planets changed, incorporating a number of disparate objects. In 2006, the International Astronomical Union (IAU) officially adopted a resolution defining planets within the Solar System. This definition is controversial because it excludes many objects of planetary mass based on where or what they orbit. Although eight of the planetary bodies discovered before 1950 remain ""planets"" under the modern definition, some celestial bodies, such as Ceres, Pallas, Juno, Vesta (each an object in the solar asteroid belt), and Pluto (the first trans-Neptunian object discovered), that were once considered planets by the scientific community are no longer viewed as such.The planets were thought by Ptolemy to orbit Earth in deferent and epicycle motions. Although the idea that the planets orbited the Sun had been suggested many times, it was not until the 17th century that this view was supported by evidence from the first telescopic astronomical observations, performed by Galileo Galilei. By careful analysis of the observation data, Johannes Kepler found the planets' orbits were not circular but elliptical. As observational tools improved, astronomers saw that, like Earth, the planets rotated around tilted axes, and some shared such features as ice caps and seasons. Since the dawn of the Space Age, close observation by space probes has found that Earth and the other planets share characteristics such as volcanism, hurricanes, tectonics, and even hydrology.Planets are generally divided into two main types: large low-density giant planets, and smaller rocky terrestrials. Under IAU definitions, there are eight planets in the Solar System. In order of increasing distance from the Sun, they are the four terrestrials, Mercury, Venus, Earth, and Mars, then the four giant planets, Jupiter, Saturn, Uranus, and Neptune. Six of the planets are orbited by one or more natural satellites.More than a thousand planets around other stars (""extrasolar planets"" or ""exoplanets"") have been discovered in the Milky Way: as of 1 October 2015, 1968 known extrasolar planets in 1248 planetary systems (including 490 multiple planetary systems), ranging in size from just above the size of the Moon to gas giants about twice as large as Jupiter. On December 20, 2011, the Kepler Space Telescope team reported the discovery of the first Earth-sized extrasolar planets, Kepler-20e and Kepler-20f, orbiting a Sun-like star, Kepler-20. A 2012 study, analyzing gravitational microlensing data, estimates an average of at least 1.6 bound planets for every star in the Milky Way.Around one in five Sun-like stars is thought to have an Earth-sized planet in its habitable zone.