Document
... Pluto first discovered in 1930 by Clyde W. Tombaugh A full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity. In addition, a planet has to dominate the neighborhood around its orbit. Pluto has been demoted to be a “Dwar ...
... Pluto first discovered in 1930 by Clyde W. Tombaugh A full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity. In addition, a planet has to dominate the neighborhood around its orbit. Pluto has been demoted to be a “Dwar ...
4B-Astronomer-Notes
... He made important contributions by devising the most precise instruments available before the invention of the telescope for observing the heavens He charted over 1000 stars in the sky. His observations of planetary motion, particularly that of Mars, provided the crucial data for later astronomers l ...
... He made important contributions by devising the most precise instruments available before the invention of the telescope for observing the heavens He charted over 1000 stars in the sky. His observations of planetary motion, particularly that of Mars, provided the crucial data for later astronomers l ...
Stellar Activity
... • The Sun provides a template for understanding spots in other stars – Multi-year cycles – Rotational modulation – Age-rotation-activity correlation ...
... • The Sun provides a template for understanding spots in other stars – Multi-year cycles – Rotational modulation – Age-rotation-activity correlation ...
STELLAR STRUCTURE AND EVOLUTION
... Spectrum . . . yields information about surface chemical composition and gravity Evidence from: • Individual stars • Binary systems • Star clusters....these reveal how stars evolve with time • Nuclear physics...energy source, synthesis of heavy elements No direct information about physical condition ...
... Spectrum . . . yields information about surface chemical composition and gravity Evidence from: • Individual stars • Binary systems • Star clusters....these reveal how stars evolve with time • Nuclear physics...energy source, synthesis of heavy elements No direct information about physical condition ...
The Birth, Life, and Death of Stars
... How will our Sun die? How do massive stars explode? ? What are the remnants of such stellar explosions? What prevents all stars from dying as black holes? What is the minimum mass of a black hole? ? What is role of FSU researchers in answering these questions? ...
... How will our Sun die? How do massive stars explode? ? What are the remnants of such stellar explosions? What prevents all stars from dying as black holes? What is the minimum mass of a black hole? ? What is role of FSU researchers in answering these questions? ...
Lecture 15: The Main Sequence
... against gravitational collapse. Higher pressure=higher temperatures. The higher temperatures lead to greater rates of nuclear fusion which means higher luminosity. Example: Low-mass Star (0.1 MSun) ...
... against gravitational collapse. Higher pressure=higher temperatures. The higher temperatures lead to greater rates of nuclear fusion which means higher luminosity. Example: Low-mass Star (0.1 MSun) ...
colour
... Spectrum . . . yields information about surface chemical composition and gravity Evidence from: • Individual stars • Binary systems • Star clusters....these reveal how stars evolve with time • Nuclear physics...energy source, synthesis of heavy elements No direct information about physical condition ...
... Spectrum . . . yields information about surface chemical composition and gravity Evidence from: • Individual stars • Binary systems • Star clusters....these reveal how stars evolve with time • Nuclear physics...energy source, synthesis of heavy elements No direct information about physical condition ...
Stars and Galaxies
... • Mass of massive stars 6x that of sun • Take same path as medium-sized stars except for after red giant stage they do not become white dwarfs • Carbon atoms continue to fuse creating heavier elements like oxygen & nitrogen • Core of massive star so hot that fusion continues until the heavy element ...
... • Mass of massive stars 6x that of sun • Take same path as medium-sized stars except for after red giant stage they do not become white dwarfs • Carbon atoms continue to fuse creating heavier elements like oxygen & nitrogen • Core of massive star so hot that fusion continues until the heavy element ...
Page pour l`impression
... When the orbits are eccentric and/or inclined, other "velocities" can appear. The mutual perturbations between planets make their orbits : this is precession.The precession velocities can also be in resonance between themselves and/or with the mean motions. Gravitation is a very simple law that lead ...
... When the orbits are eccentric and/or inclined, other "velocities" can appear. The mutual perturbations between planets make their orbits : this is precession.The precession velocities can also be in resonance between themselves and/or with the mean motions. Gravitation is a very simple law that lead ...
Astronomy Assignment #1
... 7. Are all red giants or supergiants very massive stars? Why are red giants so big and red? What is going on inside the giants? All red giant and supergiants evolve from relatively massive stars. Any main sequence star that hotter than midK spectral type can become a giant star. So, not all giant st ...
... 7. Are all red giants or supergiants very massive stars? Why are red giants so big and red? What is going on inside the giants? All red giant and supergiants evolve from relatively massive stars. Any main sequence star that hotter than midK spectral type can become a giant star. So, not all giant st ...
Evolution of low
... Evolution of 4Mo Stars • For stars less than 6Mo these last slides describe the evolution pretty well. There are some differences in the details that depend on the initial main-sequence mass. • For stars that start with 4Mo, it gets hot enough in the cores to (1) avoid the helium flash and (2) to ...
... Evolution of 4Mo Stars • For stars less than 6Mo these last slides describe the evolution pretty well. There are some differences in the details that depend on the initial main-sequence mass. • For stars that start with 4Mo, it gets hot enough in the cores to (1) avoid the helium flash and (2) to ...
The Life Cycle of Stars Webquest
... 4. How many neutrons does a standard hydrogen atom have in its nucleus? 5. The animation shows how stars fuse the hydrogen ...
... 4. How many neutrons does a standard hydrogen atom have in its nucleus? 5. The animation shows how stars fuse the hydrogen ...
Slide 1 - Personal.psu.edu
... The Hertzsprung-Russell Diagram An H-R diagram of the 100 brightest stars looks quite different: These stars are all more luminous than the Sun. Two new categories appear here—the red giants and the blue giants. Clearly, the brightest stars in the sky appear bright because of their enormous luminos ...
... The Hertzsprung-Russell Diagram An H-R diagram of the 100 brightest stars looks quite different: These stars are all more luminous than the Sun. Two new categories appear here—the red giants and the blue giants. Clearly, the brightest stars in the sky appear bright because of their enormous luminos ...
Week 1B
... • Causes night and day (Solar day = average time between consecutive “noontimes”). • Causes (apparent) motion of the stars ...
... • Causes night and day (Solar day = average time between consecutive “noontimes”). • Causes (apparent) motion of the stars ...
Life Cycle of a Star worksheet
... Learning Goal: I can describe the life cycle of various types of stars. All stars start as a ______________. A ______________ is a large cloud of gas and dust. Gravity can pull some of the gas and dust in a nebula together. The contracting cloud is then called a ___________. A protostar is the earli ...
... Learning Goal: I can describe the life cycle of various types of stars. All stars start as a ______________. A ______________ is a large cloud of gas and dust. Gravity can pull some of the gas and dust in a nebula together. The contracting cloud is then called a ___________. A protostar is the earli ...
Homework #3 MHC Astronomy 100/101/110 Prof. Stage For ALL the
... is a graph of luminosity vs. time. Consider Wien’s law. Answers should not be numerical, e.g., “50 solar luminosities at this time”, but should show qualitatively what is going on.) 7. (4pts) How many times greater is the Earth’s gravitational force on the Moon than the Moon’s gravitational forc ...
... is a graph of luminosity vs. time. Consider Wien’s law. Answers should not be numerical, e.g., “50 solar luminosities at this time”, but should show qualitatively what is going on.) 7. (4pts) How many times greater is the Earth’s gravitational force on the Moon than the Moon’s gravitational forc ...
PISGAH Text by Dr. Bob Hayward ASTRONOMICAL Astronomer
... describes the timing of the five visible or “classical” planets in early June. The giant Jupiter leads the way and is high in the south at sunset. Lying just under the hind legs of the celestial king of the beasts, Leo the lion, Jupiter, the king of the planets, is the brightest object in the sky. I ...
... describes the timing of the five visible or “classical” planets in early June. The giant Jupiter leads the way and is high in the south at sunset. Lying just under the hind legs of the celestial king of the beasts, Leo the lion, Jupiter, the king of the planets, is the brightest object in the sky. I ...
Question 2 (7-1 thru 7-4 PPT Questions)
... Astronomical Unit: A unit of distance equal to the average distance between the Earth and the Sun. 1. Diameter of Sun (1.39 106 km) is about 110 times that of Earth (1.3 104 km). 2. Jupiter’s diameter is about 11 times that of Earth. 3. Pluto’s diameter is about 1/5 that of Earth. ...
... Astronomical Unit: A unit of distance equal to the average distance between the Earth and the Sun. 1. Diameter of Sun (1.39 106 km) is about 110 times that of Earth (1.3 104 km). 2. Jupiter’s diameter is about 11 times that of Earth. 3. Pluto’s diameter is about 1/5 that of Earth. ...
Chapter 25 PowerPoint
... nucleus (AGN), located only 10 million light years from us. The black hole at the center of this galaxy is thought to be around 60 million times the mass of our Sun; material around it gets shot off in the form of huge jets which travel at nearly the speed of light and are easily visible in this Cha ...
... nucleus (AGN), located only 10 million light years from us. The black hole at the center of this galaxy is thought to be around 60 million times the mass of our Sun; material around it gets shot off in the form of huge jets which travel at nearly the speed of light and are easily visible in this Cha ...
MIDTERM #1 AST209 - The Cosmos Feb 10, 2012 50 minutes
... B) They will increase speed at the same rate, because they have identical rocket engines. C) They will not speed up at all, but move at a constant speed because they are in space and the rocket has nothing against which to push. D) It is impossible to say with only the information provided E) The on ...
... B) They will increase speed at the same rate, because they have identical rocket engines. C) They will not speed up at all, but move at a constant speed because they are in space and the rocket has nothing against which to push. D) It is impossible to say with only the information provided E) The on ...