Beauty and the beast - University of Wyoming
... misconception is that the North Star is the brightest star in the sky. Polaris is the North Star because it is the only star that does not move throughout the night. All of the other stars trace circles around it. Observers will always find it in the same spot – north and 41° above the horizon (for ...
... misconception is that the North Star is the brightest star in the sky. Polaris is the North Star because it is the only star that does not move throughout the night. All of the other stars trace circles around it. Observers will always find it in the same spot – north and 41° above the horizon (for ...
For teachers who attended without students
... “The Pulsar Search Collaboratory is an NSF-funded program that aims to increase student interest in science, engineering, and technology careers. We use astronomical research–in this case searching for pulsars—as the vehicle. At the same time, though, students are actually helping astronomers sift t ...
... “The Pulsar Search Collaboratory is an NSF-funded program that aims to increase student interest in science, engineering, and technology careers. We use astronomical research–in this case searching for pulsars—as the vehicle. At the same time, though, students are actually helping astronomers sift t ...
Ch. 15 Notes
... • The existence of black holes was first proposed by Albert Einstein as a result of his Theory of General Relativity. He called them “dark stars”, but suggested these monsters could not possibly exist for real. • They have been observed due to the effect of their massive amounts of gravity on ...
... • The existence of black holes was first proposed by Albert Einstein as a result of his Theory of General Relativity. He called them “dark stars”, but suggested these monsters could not possibly exist for real. • They have been observed due to the effect of their massive amounts of gravity on ...
Two new transiting extra-solar planets discovered with SuperWASP
... involves the drop in a star’s luminosity when an orbiting body transits the star's disk, a phenomenon called a "photometric transit." The second involves the reflex motion of the star due to that orbiting body, and is called the "radial-velocity" method. The first yields information on the size of t ...
... involves the drop in a star’s luminosity when an orbiting body transits the star's disk, a phenomenon called a "photometric transit." The second involves the reflex motion of the star due to that orbiting body, and is called the "radial-velocity" method. The first yields information on the size of t ...
Pounds K. - X-ray Astronomy and Cosmology group group
... 20 and 40MHz transmitters powered by battery bleep bleep lasted for only 21 days - but shook the world rocket case visible for several months and orbit decay used to study atmospheric density ...
... 20 and 40MHz transmitters powered by battery bleep bleep lasted for only 21 days - but shook the world rocket case visible for several months and orbit decay used to study atmospheric density ...
PS#3
... Lsun is 4x1026 W, so this is about 0.001 times the Sun’s luminosity 4. A radio transmitter on a spacecraft emits a signal at a frequency of 10 Hz. At Earth the signal is received and noted to be at 99,970,000Hz. How fast is the spacecraft moving? Is it receding or approaching? ...
... Lsun is 4x1026 W, so this is about 0.001 times the Sun’s luminosity 4. A radio transmitter on a spacecraft emits a signal at a frequency of 10 Hz. At Earth the signal is received and noted to be at 99,970,000Hz. How fast is the spacecraft moving? Is it receding or approaching? ...
Lecture 10 - Concord University
... observed in the Galaxy. `Naked eye’ nova occur more like one per decade. ...
... observed in the Galaxy. `Naked eye’ nova occur more like one per decade. ...
Stellar Evolution
... • Off the main sequence, there are – cool, bright stars in the upper right – hot, dim stars in the lower left ...
... • Off the main sequence, there are – cool, bright stars in the upper right – hot, dim stars in the lower left ...
teaching galileo? get to know riccioli! what a forgotten italian
... But a significant portion of the Atlas Coelestis is devoted ...
... But a significant portion of the Atlas Coelestis is devoted ...
The Life of a Star - Department of Physics and Astronomy
... moving more rapidly than average will escape, or leave the cluster • A stellar association is a group of newborn stars that are moving apart so rapidly that their gravitational attraction for one another cannot pull them into orbit about one another ...
... moving more rapidly than average will escape, or leave the cluster • A stellar association is a group of newborn stars that are moving apart so rapidly that their gravitational attraction for one another cannot pull them into orbit about one another ...
Optical Astronomy Imaging Chain: Telescopes & CCDs
... • dithering telescope: take a series of images, move telescope slightly to ensure image falls on good pixels ...
... • dithering telescope: take a series of images, move telescope slightly to ensure image falls on good pixels ...
Lecture6_v3 - Lick Observatory
... What are the two most important properties of a telescope? 1. Light-collecting area: Telescopes with a larger collecting area can gather a greater amount of light in a shorter time. 2. Angular resolution: Telescopes that are larger are capable of taking images with greater ...
... What are the two most important properties of a telescope? 1. Light-collecting area: Telescopes with a larger collecting area can gather a greater amount of light in a shorter time. 2. Angular resolution: Telescopes that are larger are capable of taking images with greater ...
PPT - McMaster Physics and Astronomy
... 4(1H )4He 2 energy Nuclear reactions yield predictable neutrino fluxes from the Sun that directly reflect reaction rates ...
... 4(1H )4He 2 energy Nuclear reactions yield predictable neutrino fluxes from the Sun that directly reflect reaction rates ...
Some Important Introductory Concepts
... Kepler’s 3rd law, as modified by Newton (coming up), will be a cornerstone of much of this course, because it allows us to estimate masses of astronomical objects (e.g. masses of stars, galaxies, the existence of black holes and the mysterious “dark matter”). Example of use of Kepler’s 3rd law: Th ...
... Kepler’s 3rd law, as modified by Newton (coming up), will be a cornerstone of much of this course, because it allows us to estimate masses of astronomical objects (e.g. masses of stars, galaxies, the existence of black holes and the mysterious “dark matter”). Example of use of Kepler’s 3rd law: Th ...
Document
... Below the lower limit, not enough gravity (mass) to produce the temp and pressure needed to sustain hydrogen fusion. • 0.016 MSun to 0.08 MSun are brown dwarfs. • Jupiter is about 75 times too small to have become a star. (17 times smaller than the smallest brown dwarf.) ...
... Below the lower limit, not enough gravity (mass) to produce the temp and pressure needed to sustain hydrogen fusion. • 0.016 MSun to 0.08 MSun are brown dwarfs. • Jupiter is about 75 times too small to have become a star. (17 times smaller than the smallest brown dwarf.) ...
ReviewQuestionsForClass
... How do size, temperature, and distance to a star affect its brightness? Which stars on the main sequence are the brightest? Hottest? Biggest? Bluest? Live the longest? What are the different astronomical objects? Comets, nebulae, main sequence stars, red giants, white dwarves, planetary nebulae, bin ...
... How do size, temperature, and distance to a star affect its brightness? Which stars on the main sequence are the brightest? Hottest? Biggest? Bluest? Live the longest? What are the different astronomical objects? Comets, nebulae, main sequence stars, red giants, white dwarves, planetary nebulae, bin ...
Consider Average Stars
... The apparent brightness of a star – that is, what we actually see – is partly an accident of location: nearby stars can look deceptively bright. (The obvious example is the Sun!) But the intrinsic (true) brightness of a star is a good measure of how much energy is being generated, how fast the fuel ...
... The apparent brightness of a star – that is, what we actually see – is partly an accident of location: nearby stars can look deceptively bright. (The obvious example is the Sun!) But the intrinsic (true) brightness of a star is a good measure of how much energy is being generated, how fast the fuel ...
OBJXlab
... Does the object move? Most objects outside of our solar system show such small motions that they appear stationary, except over periods of thousands or millions of years. But objects in the solar system, since they are in orbit around the sun, appear to move relatively quickly among the stars. The m ...
... Does the object move? Most objects outside of our solar system show such small motions that they appear stationary, except over periods of thousands or millions of years. But objects in the solar system, since they are in orbit around the sun, appear to move relatively quickly among the stars. The m ...
the search for object x
... Does the object move? Most objects outside of our solar system show such small motions that they appear stationary, except over periods of thousands or millions of years. But objects in the solar system, since they are in orbit around the sun, appear to move relatively quickly among the stars. The m ...
... Does the object move? Most objects outside of our solar system show such small motions that they appear stationary, except over periods of thousands or millions of years. But objects in the solar system, since they are in orbit around the sun, appear to move relatively quickly among the stars. The m ...
The Quest for Object X - Department of Physics and Astronomy
... Does the object move? Most objects outside of our solar system show such small motions that they appear stationary, except over periods of thousands or millions of years. But objects in the solar system, since they are in orbit around the sun, appear to move relatively quickly among the stars. The m ...
... Does the object move? Most objects outside of our solar system show such small motions that they appear stationary, except over periods of thousands or millions of years. But objects in the solar system, since they are in orbit around the sun, appear to move relatively quickly among the stars. The m ...
First Light for May, 2001 - South Bay Astronomical Society
... The transit method can only find systems that are aligned with our line of sight. The Stellar Wobble Method can find planetary systems that are not fully aligned with our line of sight but still have a component that provides a relative motion towards or away from Earth. Thus, the Wobble method pro ...
... The transit method can only find systems that are aligned with our line of sight. The Stellar Wobble Method can find planetary systems that are not fully aligned with our line of sight but still have a component that provides a relative motion towards or away from Earth. Thus, the Wobble method pro ...
Variable Stars: Pulsation, Evolution and applications to Cosmology
... Recall equations of stellar structure. Nuclear energy generation rate ε(ρ,T) slowly changes the composition decreasing the amount of Hydrogen and increasing the amount of Helium on a nuclear time scale – the characteristic time for stellar properties to change as a result of nuclear burning: tnuc ~ ...
... Recall equations of stellar structure. Nuclear energy generation rate ε(ρ,T) slowly changes the composition decreasing the amount of Hydrogen and increasing the amount of Helium on a nuclear time scale – the characteristic time for stellar properties to change as a result of nuclear burning: tnuc ~ ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.