The Birth of Stars
... What forces would a star-formation simulation need to include? -Gravity -Pressure -Magnetic fields ...
... What forces would a star-formation simulation need to include? -Gravity -Pressure -Magnetic fields ...
Star Formation
... Cloud fragmentation • The molecular cloud does not collapse into a single star. • It fragments into many clumps. • These clumps can further collapse to form stars. • 10 - 1000 stars can be formed from the cloud. ...
... Cloud fragmentation • The molecular cloud does not collapse into a single star. • It fragments into many clumps. • These clumps can further collapse to form stars. • 10 - 1000 stars can be formed from the cloud. ...
slides - Insight Cruises
... fs = fraction of stars that are Sun-like Np = number of planets per star fe = fraction of "environmentally correct" planets fL = fraction of planets where life develops fi = fraction where intelligent & technological life develops L = lifetime of an intelligent & technological civilization (years) ...
... fs = fraction of stars that are Sun-like Np = number of planets per star fe = fraction of "environmentally correct" planets fL = fraction of planets where life develops fi = fraction where intelligent & technological life develops L = lifetime of an intelligent & technological civilization (years) ...
Slide 1
... system. You can see the vertical green plasma jet which is guided by the star’s magnetic field. The white zones are gas and dust, being illuminated from inside by the young star. The dark central zone is where the dust is so optically thick that the light is not being transmitted. ...
... system. You can see the vertical green plasma jet which is guided by the star’s magnetic field. The white zones are gas and dust, being illuminated from inside by the young star. The dark central zone is where the dust is so optically thick that the light is not being transmitted. ...
Great Migrations & other natural history tales
... PPM simulation (Piecewise Parabolic Method) VH-1 code Owen, Blondin et al. ...
... PPM simulation (Piecewise Parabolic Method) VH-1 code Owen, Blondin et al. ...
Gravitational Collapse
... If density of gas is high, and temperature is low enough, H atoms can form H2. Unfortunately, no emission from H2 in the optical or radio bands. Therefore use, 1. Other molecules. For example, CO emits radiation at a wavelength of 2.6mm microwaves. 2. Dust. Dust (and molecules) are often found toget ...
... If density of gas is high, and temperature is low enough, H atoms can form H2. Unfortunately, no emission from H2 in the optical or radio bands. Therefore use, 1. Other molecules. For example, CO emits radiation at a wavelength of 2.6mm microwaves. 2. Dust. Dust (and molecules) are often found toget ...
Is the Earth special
... Peter Ward and Donald Brownlee suggested that the circumstances that have produced complex life on Earth are each unlikely, and ...
... Peter Ward and Donald Brownlee suggested that the circumstances that have produced complex life on Earth are each unlikely, and ...
guide to orion 3-d flythrough
... The central area of the nebula is called the Trapezium cluster. It is dominated by four young, massive stars in a kite-like arrangement. The brightest of these stars, which has a luminosity 100,000 times that of the Sun, provides the energy that creates the nebula as we see it. It produces a flood o ...
... The central area of the nebula is called the Trapezium cluster. It is dominated by four young, massive stars in a kite-like arrangement. The brightest of these stars, which has a luminosity 100,000 times that of the Sun, provides the energy that creates the nebula as we see it. It produces a flood o ...
How common are habitable planets?
... Jupiter – or in orbits so close to their stars that they receives from the sun. are roasted. To sort them out, Petigura and his colleagues are using the Keck Telescopes in Hawaii to obtain spectra of as many stars as possible. This will help them determine each star's true brightness and calculate t ...
... Jupiter – or in orbits so close to their stars that they receives from the sun. are roasted. To sort them out, Petigura and his colleagues are using the Keck Telescopes in Hawaii to obtain spectra of as many stars as possible. This will help them determine each star's true brightness and calculate t ...
23.4 Minor Members of the Solar System
... The total mass of asteroids is estimated to be only about 1/1000th of Earth’s size, which in itself is not a very large planet when compared to the gas giants. What happened to the remainder of the planet if these asteroid fragments are the remains of a planet? Other scientists have hypothesized tha ...
... The total mass of asteroids is estimated to be only about 1/1000th of Earth’s size, which in itself is not a very large planet when compared to the gas giants. What happened to the remainder of the planet if these asteroid fragments are the remains of a planet? Other scientists have hypothesized tha ...
What is it? - Carmenes - Calar Alto Observatory
... Exoplanets and exoearths Our Solar System has eight planets. Four of them are “terrestrial” planets: Mercury (with its Moon-like surface), Venus (with its greenhouse atmosphere), the Earth (with its living creatures) and Mars (with its volcanoes and canyons), while the other four are “gas giant” pla ...
... Exoplanets and exoearths Our Solar System has eight planets. Four of them are “terrestrial” planets: Mercury (with its Moon-like surface), Venus (with its greenhouse atmosphere), the Earth (with its living creatures) and Mars (with its volcanoes and canyons), while the other four are “gas giant” pla ...
Group 1 Notes for Week 8 - UGA Physics and Astronomy
... ice particles: the rocky metallic cores further than 5 AU can get an ice layer, and when they get 5x the size of the Earth, they can start pulling in the Hydrogen and Helium gas by their larger gravity. You get bigger worlds, but lower densities than the inner planets. The pressure from the ice will ...
... ice particles: the rocky metallic cores further than 5 AU can get an ice layer, and when they get 5x the size of the Earth, they can start pulling in the Hydrogen and Helium gas by their larger gravity. You get bigger worlds, but lower densities than the inner planets. The pressure from the ice will ...
The GAIA astrometric survey of extra
... In our earlier work [13], we considered in the simulations single giant planets, in the mass range 0.1 ≤ MJ ≤ 5, orbiting 1-M⊙ stars with periods up to twice the mission duration, and placing the systems at increasing distances from our Sun. We parameterized our results in terms of the astrometric s ...
... In our earlier work [13], we considered in the simulations single giant planets, in the mass range 0.1 ≤ MJ ≤ 5, orbiting 1-M⊙ stars with periods up to twice the mission duration, and placing the systems at increasing distances from our Sun. We parameterized our results in terms of the astrometric s ...
Chapter-6 Lecture Spring Semester
... as viewed from above Earth’s North Pole) is the same as the direction in which the Sun rotates on its axis. ...
... as viewed from above Earth’s North Pole) is the same as the direction in which the Sun rotates on its axis. ...
The Origin of the Solar System
... The impact would vaporize low-melting-point materials (e.g., water) and disperse them explaining their lack in the Moon Only surface rock blasted out of Earth leaving Earth’s core intact and little iron in the Moon Easily explains composition similarities and differences with Earth The splashed- ...
... The impact would vaporize low-melting-point materials (e.g., water) and disperse them explaining their lack in the Moon Only surface rock blasted out of Earth leaving Earth’s core intact and little iron in the Moon Easily explains composition similarities and differences with Earth The splashed- ...
WARM-UP # 32 Which planets are the terrestrial planets and which
... Which planets are the terrestrial planets and which planets are the gas planets? What are three of their primary differences? The terrestrial planets are made of rock, smaller, closer together, do not have rings, and are closer to the sun. ...
... Which planets are the terrestrial planets and which planets are the gas planets? What are three of their primary differences? The terrestrial planets are made of rock, smaller, closer together, do not have rings, and are closer to the sun. ...
What is a planet?
... where temperature ~5 × 105 K and resulting blob will have positive energy, and cooling time ~ 1010 sec. Blob expands adiabatically and disperses (Spitzer 1939) – where did Jupiter s deuterium come from – D/H ...
... where temperature ~5 × 105 K and resulting blob will have positive energy, and cooling time ~ 1010 sec. Blob expands adiabatically and disperses (Spitzer 1939) – where did Jupiter s deuterium come from – D/H ...
Stars
... collapsed under the force of gravity it began to spin rapidly and then flattened into a plane. This explains why the solar system is a relatively flat plane and why the planets orbit in the same direction and tend to rotate in the direction that they orbit. The collapsing cloud of gas and dust was h ...
... collapsed under the force of gravity it began to spin rapidly and then flattened into a plane. This explains why the solar system is a relatively flat plane and why the planets orbit in the same direction and tend to rotate in the direction that they orbit. The collapsing cloud of gas and dust was h ...
ISM and star formation
... Gas Structures in the ISM Emission Nebulae or H II Regions Regions of gas and dust near stars just formed. The Hydrogen is essentially fully ionized. Temperatures near 10,000 K Sizes about 1-20 pc. Hot tenuous gas => emission lines (Kirchhoff's Laws) ...
... Gas Structures in the ISM Emission Nebulae or H II Regions Regions of gas and dust near stars just formed. The Hydrogen is essentially fully ionized. Temperatures near 10,000 K Sizes about 1-20 pc. Hot tenuous gas => emission lines (Kirchhoff's Laws) ...
Phys 1830: Lecture 33 - University of Manitoba Physics Department
... a)is food for some microbes on Earth. b) is toxic to some microbes on Earth. c) collects water from an atmosphere. d) is capable of creating on Mars wet habitats that are about the size of sand grains. ...
... a)is food for some microbes on Earth. b) is toxic to some microbes on Earth. c) collects water from an atmosphere. d) is capable of creating on Mars wet habitats that are about the size of sand grains. ...
March 2017 - Shasta Astronomy Club
... form stars right as the galaxy, itself, forms, then run out of gas to make any more. If the stars instead belong to our Milky Way they would have all different ages, since we’re still actively churning them out. Using models of how stars change color as they age, the astronomers were able to show th ...
... form stars right as the galaxy, itself, forms, then run out of gas to make any more. If the stars instead belong to our Milky Way they would have all different ages, since we’re still actively churning them out. Using models of how stars change color as they age, the astronomers were able to show th ...
15_LectureOutline
... main solar system and are now in the Kuiper belt and the Oort cloud. Some occasionally enter the inner solar system as comets. • Collisions probably explain oddities of planets and moons. • Over 200 extrasolar planets have been observed; most are massive and orbit very close to their star. This is p ...
... main solar system and are now in the Kuiper belt and the Oort cloud. Some occasionally enter the inner solar system as comets. • Collisions probably explain oddities of planets and moons. • Over 200 extrasolar planets have been observed; most are massive and orbit very close to their star. This is p ...
Workbook I
... months. Comets appear to be bright balls with fat tails. They do not fall rapidly in the sky; you would have to watch one for hours or days to see its movement. The center of a comet is a ball of frozen gas, dust, and water. Like planets or moons, comets orbit around the Sun. The comet that causes ...
... months. Comets appear to be bright balls with fat tails. They do not fall rapidly in the sky; you would have to watch one for hours or days to see its movement. The center of a comet is a ball of frozen gas, dust, and water. Like planets or moons, comets orbit around the Sun. The comet that causes ...
Can Earth-Type Habitable Planets Exist Around 47 UMa?
... study of hypothetical terrestrial planets around 47 UMa is particularly interesting because this system resembles our own solar system relatively closely. First, 47 UMa hosts two Jupiter-mass planets in nearly circular orbits at respectable distances from the host star (i.e., 2.09 and 3.73 AU; see B ...
... study of hypothetical terrestrial planets around 47 UMa is particularly interesting because this system resembles our own solar system relatively closely. First, 47 UMa hosts two Jupiter-mass planets in nearly circular orbits at respectable distances from the host star (i.e., 2.09 and 3.73 AU; see B ...