The Cosmic Perspective Other Planetary Systems: The New Science
... Why are most extrasolar planetary systems so different than ours? a) There is a large diversity of planetary systems predicted by the nebular theory, and we would not expect any two to be similar. b) It is easier to detect planets that are massive and close to their stars, and harder to detect sys ...
... Why are most extrasolar planetary systems so different than ours? a) There is a large diversity of planetary systems predicted by the nebular theory, and we would not expect any two to be similar. b) It is easier to detect planets that are massive and close to their stars, and harder to detect sys ...
NAM_f2
... for this project we initially used synthetic data consisting of white Gaussian noise with a transit signal implanted within it and we varied the period and duration of the transit signal in different lightcurves. However, now the first lightcurves are being produced we are implanting transit signatu ...
... for this project we initially used synthetic data consisting of white Gaussian noise with a transit signal implanted within it and we varied the period and duration of the transit signal in different lightcurves. However, now the first lightcurves are being produced we are implanting transit signatu ...
Planets
... since in time they adhered to one another forming tiny bodies or planetesimals. Those bodies that grew large enough used their mild gravitational forces to attract their fellows. In time, each radial zone of the solar nebula became dominated by a single proto planet that used its substantial gravity ...
... since in time they adhered to one another forming tiny bodies or planetesimals. Those bodies that grew large enough used their mild gravitational forces to attract their fellows. In time, each radial zone of the solar nebula became dominated by a single proto planet that used its substantial gravity ...
Search for Other Worlds - Science fiction 20 years
... method consists of precisely measuring a star's position in the sky, and then making observations of the movement of the star over time. If the star has an orbiting planet or planets, then the gravitational influence of the objects will cause the star to move in a tiny circular or elliptical orbit a ...
... method consists of precisely measuring a star's position in the sky, and then making observations of the movement of the star over time. If the star has an orbiting planet or planets, then the gravitational influence of the objects will cause the star to move in a tiny circular or elliptical orbit a ...
ExTRaSOLaR pLaNeTS
... velocity of the star along the line of sight of an observer on study Doppler-shifted spectra, looking for small regular variaEarth is its radial velocity. Changes in the radial velocity of the tions in the radial velocity of a star. As the inclination of the planstar cause the lines in the star's sp ...
... velocity of the star along the line of sight of an observer on study Doppler-shifted spectra, looking for small regular variaEarth is its radial velocity. Changes in the radial velocity of the tions in the radial velocity of a star. As the inclination of the planstar cause the lines in the star's sp ...
Publication - Centre for Star and Planet Formation
... respectively. The binary star consists of a Sun-like star and a companion roughly one-third its size, orbiting each other every 7.45 days. With an orbital period of 49.5 days, 18 transits of the inner planet have been observed, allowing a detailed characterization of its orbit and those of the stars ...
... respectively. The binary star consists of a Sun-like star and a companion roughly one-third its size, orbiting each other every 7.45 days. With an orbital period of 49.5 days, 18 transits of the inner planet have been observed, allowing a detailed characterization of its orbit and those of the stars ...
ph709-14
... inner edge begins around 25 AU away, farther than the average orbital distance of Uranus in the Solar System. Its outer edge appears to extend as far out as 550 AUs away from the star. ...
... inner edge begins around 25 AU away, farther than the average orbital distance of Uranus in the Solar System. Its outer edge appears to extend as far out as 550 AUs away from the star. ...
High Contrast - University of Arizona
... UV/Optical imaging and spectroscopy of collisionally evolved circumstellar debris and co-orbital bodies will play a pivotal role in furthering our understanding of the formation and evolution of exosolar planetary systems. To study physical processes acting over sub-AU spatial scales and time scale ...
... UV/Optical imaging and spectroscopy of collisionally evolved circumstellar debris and co-orbital bodies will play a pivotal role in furthering our understanding of the formation and evolution of exosolar planetary systems. To study physical processes acting over sub-AU spatial scales and time scale ...
File
... Reading Skills Read the passage below. Then, answer questions 8-10. Movement of the Planets Imagine that it is the year 200 BCE and that you are an apprentice to a famous Greek astronomer. After many years of observing the sky, the astronomer knows all of the constellations as well as he knows the b ...
... Reading Skills Read the passage below. Then, answer questions 8-10. Movement of the Planets Imagine that it is the year 200 BCE and that you are an apprentice to a famous Greek astronomer. After many years of observing the sky, the astronomer knows all of the constellations as well as he knows the b ...
How Big is the Solar System?
... Pluto not only is smaller than the other eight planets, but is smaller than the Moon and half a dozen other satellites of planets. It is, as we have seen, the exception to the rule that the inner planets are small (and rocky) and the outer planets large (and gaseous). It is also exceptional in its o ...
... Pluto not only is smaller than the other eight planets, but is smaller than the Moon and half a dozen other satellites of planets. It is, as we have seen, the exception to the rule that the inner planets are small (and rocky) and the outer planets large (and gaseous). It is also exceptional in its o ...
The formation of stars and planets
... Typically this is reached at 10-6..10-5 M. From here on: gravitational influence of protoplanet determines random velocities, not the self-stirring of the planetesimals. ‘Oligarchic growth’. ...
... Typically this is reached at 10-6..10-5 M. From here on: gravitational influence of protoplanet determines random velocities, not the self-stirring of the planetesimals. ‘Oligarchic growth’. ...
Planets orbiting stars more massive than the Sun
... surveys for planets of these types of stars are not efficient (Desort 2009a; Desort 2009b; Guenther et al. 2009; Galland et al. 2006; Galland et al. 2010; Borgniet et al. 2014). Transit surveys are more suitable, because they do not suffer from these difficulties. The only challenges of transit surv ...
... surveys for planets of these types of stars are not efficient (Desort 2009a; Desort 2009b; Guenther et al. 2009; Galland et al. 2006; Galland et al. 2010; Borgniet et al. 2014). Transit surveys are more suitable, because they do not suffer from these difficulties. The only challenges of transit surv ...
Our Solar System 6.1 Planets 6.2 Dwarf planets and other solar
... Procedure: Read through the following passage. In space, most (90%) of all stars are actually double-star systems in which two stars orbit each other. This close orbit prohibits any planets from forming. Our solo star system gave way for planets to form. It is thought by astronomers that had the mat ...
... Procedure: Read through the following passage. In space, most (90%) of all stars are actually double-star systems in which two stars orbit each other. This close orbit prohibits any planets from forming. Our solo star system gave way for planets to form. It is thought by astronomers that had the mat ...
The Search for Worlds Like Our Own
... as a clearly defined science goal. Since the origin of life most likely requires a stable supply of energy, planets that could host life are likely to orbit within what is known as the habitable zone (HZ), a region relatively close to the parent star. The HZ is defined such that liquid water is like ...
... as a clearly defined science goal. Since the origin of life most likely requires a stable supply of energy, planets that could host life are likely to orbit within what is known as the habitable zone (HZ), a region relatively close to the parent star. The HZ is defined such that liquid water is like ...
CH10.AST1001.F16.EDS
... • Close gravitational encounters between two massive planets can eject one planet while flinging the other into a highly elliptical orbit. • Multiple close encounters with smaller planetesimals can also cause inward migration. • Resonances may also contribute. ...
... • Close gravitational encounters between two massive planets can eject one planet while flinging the other into a highly elliptical orbit. • Multiple close encounters with smaller planetesimals can also cause inward migration. • Resonances may also contribute. ...
Refuges for Life in a - University of Arizona
... has been a huge breakthrough: the discovery of giant, Jupitersize planets around sunlike stars. Not every sunlike star has such a planet. In fact, the giant planets discovered to date are primarily found around stars that are rich in chemical elements heavier than helium— what astronomers call “meta ...
... has been a huge breakthrough: the discovery of giant, Jupitersize planets around sunlike stars. Not every sunlike star has such a planet. In fact, the giant planets discovered to date are primarily found around stars that are rich in chemical elements heavier than helium— what astronomers call “meta ...
The New Dwarf Planet and Plutoids
... our solar system. The definition for planets has changed and there are now dwarf planets and plutoids. In 2006 leading astronomers redefined the word planet. A planet is now defined as a large celestial body orbiting a star. It is nearly round, has its own gravity, and must clear the neighborhood ar ...
... our solar system. The definition for planets has changed and there are now dwarf planets and plutoids. In 2006 leading astronomers redefined the word planet. A planet is now defined as a large celestial body orbiting a star. It is nearly round, has its own gravity, and must clear the neighborhood ar ...
ph507lecnote07
... there's too little solid material in the vicinity to built protoplanet's core of 10 ME (applies to r~1 AU as well). ...
... there's too little solid material in the vicinity to built protoplanet's core of 10 ME (applies to r~1 AU as well). ...
Test - Scioly.org
... Based on this data, you deduce a planet’s distance and mass. However, more precise measurements reveal that the fraction of light coming out in the optical band is the same but that instead the star peaks at 80 microns in the infrared band instead of 60 microns. How will this new data change the ...
... Based on this data, you deduce a planet’s distance and mass. However, more precise measurements reveal that the fraction of light coming out in the optical band is the same but that instead the star peaks at 80 microns in the infrared band instead of 60 microns. How will this new data change the ...
Scaling the Solar System
... 10) Assign one planet to each pair of students. Depending on your class size, you may need to have more than two students assigned to each planet or assign more than one planet to a group. Adjust appropriately for your circumstances. If you have varying abilities in your classroom, it would be wise ...
... 10) Assign one planet to each pair of students. Depending on your class size, you may need to have more than two students assigned to each planet or assign more than one planet to a group. Adjust appropriately for your circumstances. If you have varying abilities in your classroom, it would be wise ...
Basic data of CoRoT-Exo-2b - tls
... (infrared spectra with high spectra resolution needed) Determine the mass and the radius of the host star accurately (optical spectra with high spectral resolution and high signal to noise needed, in practise 2 to 4 ...
... (infrared spectra with high spectra resolution needed) Determine the mass and the radius of the host star accurately (optical spectra with high spectral resolution and high signal to noise needed, in practise 2 to 4 ...
Solar System Contents
... Dwarf planets are smaller than the major planets and some have quite elliptical orbits. Most dwarf planets & asteroids also revolve prograde. Comets have highly elliptical orbits; often highly inclined from the planetary plane. ...
... Dwarf planets are smaller than the major planets and some have quite elliptical orbits. Most dwarf planets & asteroids also revolve prograde. Comets have highly elliptical orbits; often highly inclined from the planetary plane. ...
Inquiry Activity - Ball State University
... 2. Setup the classroom as shown in the figure below: a. Have the students push all of the desks and chairs against one side of the room (you need a large circular space to do the video). b. The light bulb (Sun) should be in the center of the room. c. Each constellation group should be near the outsi ...
... 2. Setup the classroom as shown in the figure below: a. Have the students push all of the desks and chairs against one side of the room (you need a large circular space to do the video). b. The light bulb (Sun) should be in the center of the room. c. Each constellation group should be near the outsi ...
Astro 27 Solar System Formation and ExoPlanets Slide Show
... “Slow” Core Accretion goes faster when gravity gets strong enough, but… • Once the core grows past ~0.5-1 mile across, gravity becomes significant and accelerates the process. • Growth rate goes as radius to the 4th power (for constant density). • So, those cores which get to the self-gravity point ...
... “Slow” Core Accretion goes faster when gravity gets strong enough, but… • Once the core grows past ~0.5-1 mile across, gravity becomes significant and accelerates the process. • Growth rate goes as radius to the 4th power (for constant density). • So, those cores which get to the self-gravity point ...
Solar System
... • Sun’s energy comes from nuclear fusion (in which hydrogen is converted to helium within sun’s core). This energy is released as heat and light. • Our sun is classified as a yellow main sequence star. – A star’s temperature determines its “color.” The coldest stars are red. The hottest stars are b ...
... • Sun’s energy comes from nuclear fusion (in which hydrogen is converted to helium within sun’s core). This energy is released as heat and light. • Our sun is classified as a yellow main sequence star. – A star’s temperature determines its “color.” The coldest stars are red. The hottest stars are b ...
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.