Observations, Modeling and Theory of Debris Disks
... in thermal emission or scattered light. These disks may persist over Gyrs through steady-state evolution and/or may also experience sporadic stirring and major collisional breakups, rendering them atypically bright for brief periods of time. Most interestingly, they provide direct evidence that the ...
... in thermal emission or scattered light. These disks may persist over Gyrs through steady-state evolution and/or may also experience sporadic stirring and major collisional breakups, rendering them atypically bright for brief periods of time. Most interestingly, they provide direct evidence that the ...
Observations, Modeling and Theory of Debris Disks
... in thermal emission or scattered light. These disks may persist over Gyrs through steady-state evolution and/or may also experience sporadic stirring and major collisional breakups, rendering them atypically bright for brief periods of time. Most interestingly, they provide direct evidence that the ...
... in thermal emission or scattered light. These disks may persist over Gyrs through steady-state evolution and/or may also experience sporadic stirring and major collisional breakups, rendering them atypically bright for brief periods of time. Most interestingly, they provide direct evidence that the ...
Introduction to Planetary Science
... Our current knowledge about the Earth and the solar system is expressed in the form of theories that explain the interactions of matter and energy in a way that is consistent with all relevant observations available to us at the present time. Accordingly, we emphasize the importance of the scientifi ...
... Our current knowledge about the Earth and the solar system is expressed in the form of theories that explain the interactions of matter and energy in a way that is consistent with all relevant observations available to us at the present time. Accordingly, we emphasize the importance of the scientifi ...
Debris Disks: Seeing Dust, Thinking of Planetesimals and Planets
... a significant fraction of main-sequence stars older than about 10 Myr. Since the circumstellar dust is short-lived, the very existence of these disks is considered as evidence that dust-producing planetesimals are still present in mature systems, in which planets have formed — or failed to form — a ...
... a significant fraction of main-sequence stars older than about 10 Myr. Since the circumstellar dust is short-lived, the very existence of these disks is considered as evidence that dust-producing planetesimals are still present in mature systems, in which planets have formed — or failed to form — a ...
Document
... Grenfell et al. (2014) used a global mean, stationary, hydrostatic, atmospheric column model to perform a 1D simulation of an Earth-like exoplanet atmosphere. The model atmosphere extended from the surface to 70 km and had the starting composition, pressure and temperature of the 1976 US Standard A ...
... Grenfell et al. (2014) used a global mean, stationary, hydrostatic, atmospheric column model to perform a 1D simulation of an Earth-like exoplanet atmosphere. The model atmosphere extended from the surface to 70 km and had the starting composition, pressure and temperature of the 1976 US Standard A ...
Asteroids, Comets, and Meteorites: Cosmic Invaders of the Earth
... 1 Origin of the Solar System: Formation of the sun and planets The Big Bang ■ Galaxy Formation ■ Stellar Evolution Solar Origins ■ Planetary Assembly 2 The Formation of Earth: ...
... 1 Origin of the Solar System: Formation of the sun and planets The Big Bang ■ Galaxy Formation ■ Stellar Evolution Solar Origins ■ Planetary Assembly 2 The Formation of Earth: ...
3-1
... being able to do the following: • Learn to write, compare, and order decimals using place value and number lines (3-1) ...
... being able to do the following: • Learn to write, compare, and order decimals using place value and number lines (3-1) ...
Evolution of Circumstellar Disks Around Normal Stars
... 15 individual objects and find that debris disks do not become colder (indicating larger radii for the debris) as they get older surrounding sun–like stars in contrast to the predictions of Kenyon and Bromley (2004). Again we note that these surveys would not detect the sub-mm emission from our own ...
... 15 individual objects and find that debris disks do not become colder (indicating larger radii for the debris) as they get older surrounding sun–like stars in contrast to the predictions of Kenyon and Bromley (2004). Again we note that these surveys would not detect the sub-mm emission from our own ...
asteroid wise - Lawrence Hall of Science
... Asteroids that are made of rock and/or metal are not the only menace. Comets are bodies of ice that can go crashing into planets as dramatically seen in 1994 when the large comet ShoemakerLevy 9 fragmented and created huge explosions when it struck the planet Jupiter at more than 20 different sites. ...
... Asteroids that are made of rock and/or metal are not the only menace. Comets are bodies of ice that can go crashing into planets as dramatically seen in 1994 when the large comet ShoemakerLevy 9 fragmented and created huge explosions when it struck the planet Jupiter at more than 20 different sites. ...
The chemical composition of solar-type stars and its impact on the
... on the gravitational lensing effect of its host star is measured, and pulsar timing, that lead to the first discovery of an exoplanet in 1992. With the pulsar timing method, observers examine small variations in the extremely periodic radio emission pattern of a star, that are caused by planets. How ...
... on the gravitational lensing effect of its host star is measured, and pulsar timing, that lead to the first discovery of an exoplanet in 1992. With the pulsar timing method, observers examine small variations in the extremely periodic radio emission pattern of a star, that are caused by planets. How ...
2004 SA Orlov
... 1. Because all the celestial objects have spherical or ellipsoidal shapes, for the accumulation of the cosmic matter as a sphere (under the action of the vortex gravitation), it is needed that an active axis thickness of the vortex ether flow be less than the diameter of the created body. The point ...
... 1. Because all the celestial objects have spherical or ellipsoidal shapes, for the accumulation of the cosmic matter as a sphere (under the action of the vortex gravitation), it is needed that an active axis thickness of the vortex ether flow be less than the diameter of the created body. The point ...
CHaracterising ExOPlanets Satellite arXiv:1310.7800v1 [astro
... noise. Earth stray light is one of them which becomes the most prominent noise for faint stars. A software suite was developed to evaluate the contamination by the stray light. As the satellite will be launched in late 2017, the year 2018 is analysed for three different altitudes. Given an visible r ...
... noise. Earth stray light is one of them which becomes the most prominent noise for faint stars. A software suite was developed to evaluate the contamination by the stray light. As the satellite will be launched in late 2017, the year 2018 is analysed for three different altitudes. Given an visible r ...
The Oort Cloud
... That makes for a very thick cloud, whose outer edges are almost half way to the nearest stars. ...
... That makes for a very thick cloud, whose outer edges are almost half way to the nearest stars. ...
Astronomy WHS Sow
... A dwarf planet, as defined by the International Astronomical Union (IAU), is a celestial body orbiting the Sun[1] that is massive enough to be spherical as a result of its own gravity but has not cleared its neighbouring region of planetesimals and is not a satellite.[2][3] More explicitly, it has t ...
... A dwarf planet, as defined by the International Astronomical Union (IAU), is a celestial body orbiting the Sun[1] that is massive enough to be spherical as a result of its own gravity but has not cleared its neighbouring region of planetesimals and is not a satellite.[2][3] More explicitly, it has t ...
Venus Retrograde 2015: Love, Lust and War
... Mercury and Venus (which are inferior planets since they lie closer to the Sun than the Earth) will always form an inferior conjunction with the Sun (i.e., between the Sun and the Earth) midway through their retrograde cycle. Conjunctions of Sun with either Mercury or Venus alternate their conjunct ...
... Mercury and Venus (which are inferior planets since they lie closer to the Sun than the Earth) will always form an inferior conjunction with the Sun (i.e., between the Sun and the Earth) midway through their retrograde cycle. Conjunctions of Sun with either Mercury or Venus alternate their conjunct ...
4373 - Zuber, M. T., H. Y. McSween Jr., R. P. Binzel, L. T. Elkins
... 1993). Dust grains from the protoplanetary disk collide, stick together and form clumps that progressively grow in size and mass (Weidenschilling 1980). Sticking of initially micronsized grains has been hypothesized to occur via a range of processes that includes electrostatic attraction (Marshall a ...
... 1993). Dust grains from the protoplanetary disk collide, stick together and form clumps that progressively grow in size and mass (Weidenschilling 1980). Sticking of initially micronsized grains has been hypothesized to occur via a range of processes that includes electrostatic attraction (Marshall a ...
Analysis of Angular Momentum in Planetary Systems and Host Stars
... primary power law of stellar mass, J ∝ M α , excluding stars of <2 solar masses. Lower mass stars rotate more slowly with and have smaller moments of inertia, and as a result they contain much less spin angular momentum. A secondary power law describes the upper bound of angular momenta of these les ...
... primary power law of stellar mass, J ∝ M α , excluding stars of <2 solar masses. Lower mass stars rotate more slowly with and have smaller moments of inertia, and as a result they contain much less spin angular momentum. A secondary power law describes the upper bound of angular momenta of these les ...
Digital STARLAB Teachers Guide
... and displays eliminating the need for additional slide projectors, video projectors, sound systems or computers. Covering a full 180º on the dome, the small bright stars remain spherical right down to the horizon. There are no cutouts or blind spots along the horizon. The projector is compact and li ...
... and displays eliminating the need for additional slide projectors, video projectors, sound systems or computers. Covering a full 180º on the dome, the small bright stars remain spherical right down to the horizon. There are no cutouts or blind spots along the horizon. The projector is compact and li ...
WAS THE SUN BORN IN A MASSIVE CLUSTER?
... are highly unlikely to truncate the Kuiper Belt unless the Sun was born in one of the unusual clusters that survived for tens of Myr. However, we find that encounters could plausibly produce highly eccentric Kuiper Belt objects such as Sedna. Key words: planets and satellites: formation – stars: kin ...
... are highly unlikely to truncate the Kuiper Belt unless the Sun was born in one of the unusual clusters that survived for tens of Myr. However, we find that encounters could plausibly produce highly eccentric Kuiper Belt objects such as Sedna. Key words: planets and satellites: formation – stars: kin ...
observations of white dwarfs in the solar neighborhood
... within 20 pc of the Sun. Holberg, Oswalt, & Sion (2002) have compiled a list of 109 white dwarfs that lie within 20 pc of the Sun, and they found that the sample is complete to 13 pc and 65% complete to 20 pc. Therefore, 50 white dwarfs remain undiscovered within 20 pc of the Sun. In combining accu ...
... within 20 pc of the Sun. Holberg, Oswalt, & Sion (2002) have compiled a list of 109 white dwarfs that lie within 20 pc of the Sun, and they found that the sample is complete to 13 pc and 65% complete to 20 pc. Therefore, 50 white dwarfs remain undiscovered within 20 pc of the Sun. In combining accu ...
January 2014 Astronomy Calendar by Dave Mitsky Some
... The dwarf planet Pluto is in conjunction with the Sun on January 1st. For more on the planets and how to locate them, browse http://www.nakedeyeplanets.com/ Asteroid 7 Iris shines at tenth magnitude as it travels northeastward through Pisces this month. It passes through the southern portion of the ...
... The dwarf planet Pluto is in conjunction with the Sun on January 1st. For more on the planets and how to locate them, browse http://www.nakedeyeplanets.com/ Asteroid 7 Iris shines at tenth magnitude as it travels northeastward through Pisces this month. It passes through the southern portion of the ...
azu_etd_13224_sip1_m
... I NTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... I NTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
the evolution of planetary systems with time
... planets. Over longer time scales, solar systems are affected by tidal forces from both stars and planets, and by general relativistic corrections that lead to orbital precession. Another classic problem in solar system dynamics concerns planetary orbits around central stars that are losing mass (Jea ...
... planets. Over longer time scales, solar systems are affected by tidal forces from both stars and planets, and by general relativistic corrections that lead to orbital precession. Another classic problem in solar system dynamics concerns planetary orbits around central stars that are losing mass (Jea ...
IAU definition of planet
The definition of planet set in Prague in 2006 by the International Astronomical Union (IAU) states that, in the Solar System, a planet is a celestial body which: is in orbit around the Sun, has sufficient mass to assume hydrostatic equilibrium (a nearly round shape), and has ""cleared the neighborhood"" around its orbit.A non-satellite body fulfilling only the first two of these criteria is classified as a ""dwarf planet"". According to the IAU, ""planets and dwarf planets are two distinct classes of objects"". A non-satellite body fulfilling only the first criterion is termed a ""small Solar System body"" (SSSB). Initial drafts planned to include dwarf planets as a subcategory of planets, but because this could potentially have led to the addition of several dozens of planets into the Solar System, this draft was eventually dropped. The definition was a controversial one and has drawn both support and criticism from different astronomers, but has remained in use.According to this definition, there are eight planets in the Solar System. The definition distinguishes planets from smaller bodies and is not useful outside the Solar System, where smaller bodies cannot be found yet. Extrasolar planets, or exoplanets, are covered separately under a complementary 2003 draft guideline for the definition of planets, which distinguishes them from dwarf stars, which are larger.