HOMEWORK #1
... percent in a specific time period, and “n” is the total number of those periods that have elapsed. For example, "Moore's law" is the empirical observation that, over the history of modern computer technology, the number of transistors in an integrated circuit doubles approximately every two years. U ...
... percent in a specific time period, and “n” is the total number of those periods that have elapsed. For example, "Moore's law" is the empirical observation that, over the history of modern computer technology, the number of transistors in an integrated circuit doubles approximately every two years. U ...
Astronomy PowerPoint - Petal School District
... (no man has ever been farther than the moon) One way: space telescopes! the Hubble Space Telescope (looks at distant galaxies & at planets in our solar system) ...
... (no man has ever been farther than the moon) One way: space telescopes! the Hubble Space Telescope (looks at distant galaxies & at planets in our solar system) ...
Friday, Oct. 10
... stars? Why does parallax vary inversely with distance? Describe and explain the relationship between a star’s apparent brightness (or flux), its absolute brightness (or luminosity), and its distance from us. Describe and explain the relationship between a star’s luminosity, its radius, and its tempe ...
... stars? Why does parallax vary inversely with distance? Describe and explain the relationship between a star’s apparent brightness (or flux), its absolute brightness (or luminosity), and its distance from us. Describe and explain the relationship between a star’s luminosity, its radius, and its tempe ...
Stars - Robert M. Hazen
... • Astrophysics is the study of the origin, evolution, and fate of stars and clusters of stars. • Cosmology is the study of the origin evolution and fate of large-scale structures of the universe. ...
... • Astrophysics is the study of the origin, evolution, and fate of stars and clusters of stars. • Cosmology is the study of the origin evolution and fate of large-scale structures of the universe. ...
here - Lund Observatory
... hydrogen abundance is X = 0.73 and that each helium nucleus formed weighs 0.7 % less than the four protons, from which it was formed. a) How much mass does the Sun loose per second due to hydrogen burning? b) How much of the hydrogen in the Sun has been transformed into helium up til now if the age ...
... hydrogen abundance is X = 0.73 and that each helium nucleus formed weighs 0.7 % less than the four protons, from which it was formed. a) How much mass does the Sun loose per second due to hydrogen burning? b) How much of the hydrogen in the Sun has been transformed into helium up til now if the age ...
Overview Notes - School District of La Crosse
... 1. Orion nebula is an example a. very rarified vacuum- million time more rarified than those found on earth 1. a study of this gas helps understand how rarified gases act. 2. super condensed stars result in a very dense star whose 1 tablespoon of matter would weigh tons 3. Molecular clouds- Not visi ...
... 1. Orion nebula is an example a. very rarified vacuum- million time more rarified than those found on earth 1. a study of this gas helps understand how rarified gases act. 2. super condensed stars result in a very dense star whose 1 tablespoon of matter would weigh tons 3. Molecular clouds- Not visi ...
15.2 Characteristics of Stars
... • The brightness of stars depend upon both its size and its temperature. Its apparent brightness depends on its distance from Earth. The sun, which is only average in brightness, appears to be the brightest, because it is closest. ...
... • The brightness of stars depend upon both its size and its temperature. Its apparent brightness depends on its distance from Earth. The sun, which is only average in brightness, appears to be the brightest, because it is closest. ...
Presentation for perspective graduate students 2006
... temperature? The surface temperature of the Sun is 5800K. A.7220 K B.6650 K C.4660 K D.3610 K ...
... temperature? The surface temperature of the Sun is 5800K. A.7220 K B.6650 K C.4660 K D.3610 K ...
Astronomy 1 – Winter 2011
... temperature? The surface temperature of the Sun is 5800K. A. 7220 K B. 6650 K C. 4660 K D. 3610 K ...
... temperature? The surface temperature of the Sun is 5800K. A. 7220 K B. 6650 K C. 4660 K D. 3610 K ...
Due April 2 - Department of Physics and Astronomy
... 3. Why do sunspots appear darker than their surroundings? (a) They are cooler than their surroundings. (b) They block some sunlight. (c) They do not emit any light. 4. If the star Alpha Centauri were moved to a distance 10 times greater than its actual distance, its parallax angle would (a) get larg ...
... 3. Why do sunspots appear darker than their surroundings? (a) They are cooler than their surroundings. (b) They block some sunlight. (c) They do not emit any light. 4. If the star Alpha Centauri were moved to a distance 10 times greater than its actual distance, its parallax angle would (a) get larg ...
September Evening Skies
... objects of first magnitude or brighter are visible. In order of brightness they are: Arcturus, Vega, Capella, Altair, Antares, Fomalhaut, and Deneb. Our usual monthly maps are designed for stargazers just beginning to find their way around the sky. This month’s map is useful for serious stargazing f ...
... objects of first magnitude or brighter are visible. In order of brightness they are: Arcturus, Vega, Capella, Altair, Antares, Fomalhaut, and Deneb. Our usual monthly maps are designed for stargazers just beginning to find their way around the sky. This month’s map is useful for serious stargazing f ...
Integrative Studies 410 Our Place in the Universe
... • Extends the cosmic distance ladder out as far as we can see Cepheids – about 50 million ly • In 1920 Hubble used this technique to measure the distance to Andromeda (about 2 million ly) • Works best for periodic variables ...
... • Extends the cosmic distance ladder out as far as we can see Cepheids – about 50 million ly • In 1920 Hubble used this technique to measure the distance to Andromeda (about 2 million ly) • Works best for periodic variables ...
HR DIAGRAM REPORT FORM
... 2. In Table 10.1, the brightest stars, how many stars are brighter than the sun? Brighter means lower magnitude (M) not higher. If double both must be considered. # brighter than the sun: ________ In Table 10.2, the closest stars, how many stars are brighter than the sun? Brighter means lower magnit ...
... 2. In Table 10.1, the brightest stars, how many stars are brighter than the sun? Brighter means lower magnitude (M) not higher. If double both must be considered. # brighter than the sun: ________ In Table 10.2, the closest stars, how many stars are brighter than the sun? Brighter means lower magnit ...
Name: Period: ______ Date: ______ Group Activity: Light Years
... what represents the year? __________________________________________ 2. How is a “student minute” similar to a “light year”? ...
... what represents the year? __________________________________________ 2. How is a “student minute” similar to a “light year”? ...
Chapter 27 Stars and Galaxies
... 27.2 Stellar Evolution The second and longest stage in the life of a star is the main-sequence stage Main-sequence stars do not expand because the force of gravity pulls the matter inward. Some white dwarfs will just cool and die, they are then called black dwarfs ...
... 27.2 Stellar Evolution The second and longest stage in the life of a star is the main-sequence stage Main-sequence stars do not expand because the force of gravity pulls the matter inward. Some white dwarfs will just cool and die, they are then called black dwarfs ...
Lecture10
... temperature? The surface temperature of the Sun is 5800K. A.7220 K B.6650 K C.4660 K D.3610 K ...
... temperature? The surface temperature of the Sun is 5800K. A.7220 K B.6650 K C.4660 K D.3610 K ...
RR animation
... with a mass of around half the Sun's. They are thought to have previously shed mass and consequently, they were once stars with similar or slightly less mass than the Sun, around 0.8 solar masses. RR Lyrae stars pulse in a manner similar to Cepheid variables, so the mechanism for the pulsation is th ...
... with a mass of around half the Sun's. They are thought to have previously shed mass and consequently, they were once stars with similar or slightly less mass than the Sun, around 0.8 solar masses. RR Lyrae stars pulse in a manner similar to Cepheid variables, so the mechanism for the pulsation is th ...
How Far To The Stars? By Vanessa Soto
... D is the distance from the Earth to the object in pc. P is the parallax angle. PC is parsec, the distance to an object with a parallax angle of 1 arc second. ...
... D is the distance from the Earth to the object in pc. P is the parallax angle. PC is parsec, the distance to an object with a parallax angle of 1 arc second. ...
Lecture 7 Stars and Galaxies and Nebula, (Oh My!) Feb 18 2003
... Outer layers of gas are blown off from the core of a star. The core often goes on to become a white dwarf. The eject gas is illuminated by the remaining star. This is the fate of most stars, including our own Sun. ...
... Outer layers of gas are blown off from the core of a star. The core often goes on to become a white dwarf. The eject gas is illuminated by the remaining star. This is the fate of most stars, including our own Sun. ...
Astronomical Distances
... distance is roughly 6,378,000,000 mm, this number is scientifically meaningful and accurate, but can you truly understand what it means? For astronomy, we need to use units that are much larger than feet, meters, miles, or kilometers. You will find that scientific notation will be very helpful here. ...
... distance is roughly 6,378,000,000 mm, this number is scientifically meaningful and accurate, but can you truly understand what it means? For astronomy, we need to use units that are much larger than feet, meters, miles, or kilometers. You will find that scientific notation will be very helpful here. ...
Document
... What makes up our solar system? What are the stars? Do they last forever? What are galaxies? What do astronomers learn by studying them? How does measuring angles help astronomers learn about objects in the sky? What is powers-of-ten notation, and why is it useful in ...
... What makes up our solar system? What are the stars? Do they last forever? What are galaxies? What do astronomers learn by studying them? How does measuring angles help astronomers learn about objects in the sky? What is powers-of-ten notation, and why is it useful in ...
Answers to Coursebook questions – Chapter E3
... The actual distance is greater than 10 pc and so the star appears dimmer than the equivalent of magnitude 0.8. Hence its apparent magnitude is greater than 0.8. d Or, from m M 5 log , we get m 0.8 5 log 4 3.8 . ...
... The actual distance is greater than 10 pc and so the star appears dimmer than the equivalent of magnitude 0.8. Hence its apparent magnitude is greater than 0.8. d Or, from m M 5 log , we get m 0.8 5 log 4 3.8 . ...
Week 11 Concept Summary
... 3. Spiral Arms: The Milky Way and many other galaxies show spiral arms. These are NOT places where stars like to be. They are areas where the gas is more dense, and hence star formation occurs, and hence have bright, hot, blue stars that die quickly before they leave the arms, and hence the eye sees ...
... 3. Spiral Arms: The Milky Way and many other galaxies show spiral arms. These are NOT places where stars like to be. They are areas where the gas is more dense, and hence star formation occurs, and hence have bright, hot, blue stars that die quickly before they leave the arms, and hence the eye sees ...
Chapter 7 Review Answers
... at the beginning of the universe (BBT) went. That extra radiation should be present throughout the universe if the BBT was to be true. We believe now that the cosmic background radiation is that extra energy/radiation. The CBR found fits with the predictions consistent with the BBT, supporting the B ...
... at the beginning of the universe (BBT) went. That extra radiation should be present throughout the universe if the BBT was to be true. We believe now that the cosmic background radiation is that extra energy/radiation. The CBR found fits with the predictions consistent with the BBT, supporting the B ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.