PHYS 390 Lectures 1/2 - The Big Picture 1/2
... Earth-Sun distance is defined as the Astronomical Unit (AU) and has a modern value of 1 AU = 1.4960 x 108 km ...
... Earth-Sun distance is defined as the Astronomical Unit (AU) and has a modern value of 1 AU = 1.4960 x 108 km ...
Life Cycle of Star Flipbook
... 6. What is going to happen to our Sun’s magnitude and temperature when it goes to its next stage? 7. What is the final stage of our Sun’s life? 8. What will happen to our Sun’s magnitude and temperature when it goes to its final stage? 9. What determines which star will go supernova? 10. What two fo ...
... 6. What is going to happen to our Sun’s magnitude and temperature when it goes to its next stage? 7. What is the final stage of our Sun’s life? 8. What will happen to our Sun’s magnitude and temperature when it goes to its final stage? 9. What determines which star will go supernova? 10. What two fo ...
Chapter14- Our Galaxy - SFA Physics and Astronomy
... The Milky Way’s Rotation Curve is flat, indicating that the Milky Way’s mass is not concentrated in the center bulge This implies the existence of “Dark Matter” ...
... The Milky Way’s Rotation Curve is flat, indicating that the Milky Way’s mass is not concentrated in the center bulge This implies the existence of “Dark Matter” ...
SAMPLE TEST: Stars and Galaxies Multiple Choice Identify the letter
... 55. The sun is positioned about ____________________ of the way from the center of the galaxy. 56. The Milky Way is classified as a(n) ____________________ galaxy. 57. In addition to size and shape, one of the major differences among galaxies is the ____________________ of their stars. 58. A(n) ____ ...
... 55. The sun is positioned about ____________________ of the way from the center of the galaxy. 56. The Milky Way is classified as a(n) ____________________ galaxy. 57. In addition to size and shape, one of the major differences among galaxies is the ____________________ of their stars. 58. A(n) ____ ...
ppt
... •Nearest star proxima centauri has a parallax angle of 0.77” •Not measured until 1838 by Friedrich Wilhelm Bessel •Hipparcos satellite measurement accuracy approaches 0.001” for over 118,000 stars. This corresponds to a a distance of only 1000 pc (only 1/8 of way to centerof our galaxy) •The planned ...
... •Nearest star proxima centauri has a parallax angle of 0.77” •Not measured until 1838 by Friedrich Wilhelm Bessel •Hipparcos satellite measurement accuracy approaches 0.001” for over 118,000 stars. This corresponds to a a distance of only 1000 pc (only 1/8 of way to centerof our galaxy) •The planned ...
Place in Space
... What is a light year? Q1:The fastest thing that we know of is light which travels at a speed of 186,000 miles or 300,000 kilometres per second in empty space. Light can travel about seven times around Earth in one second. Astronomers use the speed of light to measure how far away things are in spac ...
... What is a light year? Q1:The fastest thing that we know of is light which travels at a speed of 186,000 miles or 300,000 kilometres per second in empty space. Light can travel about seven times around Earth in one second. Astronomers use the speed of light to measure how far away things are in spac ...
Chapter 28 Stars and Their Characteristics
... bright a star “appears” to be from Earth. The Apparent Magnitude of a star is affected by Absolute- Magnitude (Volume x Luminosity) and Distance from Observer. Betelgeuse, one of the brightest stars in the Universe, does not appear to be as bright as our Sun, because of its distance from us compared ...
... bright a star “appears” to be from Earth. The Apparent Magnitude of a star is affected by Absolute- Magnitude (Volume x Luminosity) and Distance from Observer. Betelgeuse, one of the brightest stars in the Universe, does not appear to be as bright as our Sun, because of its distance from us compared ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... • Heats their outer layers that expand • The expanded gas cools and pressure drops • Gravity then recompresses the gas ...
... • Heats their outer layers that expand • The expanded gas cools and pressure drops • Gravity then recompresses the gas ...
Stars Power Point
... distance away, their absolute magnitudes would be the same as their apparent magnitudes. ...
... distance away, their absolute magnitudes would be the same as their apparent magnitudes. ...
Science Olympiad - Department of Physics and Astronomy
... Excellent way of determining distances because astronomers have found a relationship between period and luminosity or absolute magnitude. This absolute magnitude can be calculated as a function of the variable’s period. Comparing this to its apparent magnitude one can calculate the distance with the ...
... Excellent way of determining distances because astronomers have found a relationship between period and luminosity or absolute magnitude. This absolute magnitude can be calculated as a function of the variable’s period. Comparing this to its apparent magnitude one can calculate the distance with the ...
7th Grade Astronomy Study Guide
... ____ 36. According to the big bang theory, the universe is about a. 4.7 billion years old. c. 470 billion years old. b. 13.7 billion years old. d. 500 billion years old. ____ 37. Scientists think that the Milky Way probably is a. an irregular galaxy. c. an elliptical galaxy. b. a spiral galaxy. d. a ...
... ____ 36. According to the big bang theory, the universe is about a. 4.7 billion years old. c. 470 billion years old. b. 13.7 billion years old. d. 500 billion years old. ____ 37. Scientists think that the Milky Way probably is a. an irregular galaxy. c. an elliptical galaxy. b. a spiral galaxy. d. a ...
Parallax and Distance
... the Moon. These "photographs" are taken at the same time, but from two different locations on the surface of the Earth. By overlaying these two photographs you can determine the distance to the Moon. First, you will need to determine the baseline distance, which is the straight-line distance between ...
... the Moon. These "photographs" are taken at the same time, but from two different locations on the surface of the Earth. By overlaying these two photographs you can determine the distance to the Moon. First, you will need to determine the baseline distance, which is the straight-line distance between ...
M - IMAG2E
... The differences are interpreted due to age – open clusters lie in the disk of the Milky Way and have large range of ages. The Globulars are all ancient, with the oldest tracing the earliest stages of the formation of Milky Way (~ 12 109 yrs) ...
... The differences are interpreted due to age – open clusters lie in the disk of the Milky Way and have large range of ages. The Globulars are all ancient, with the oldest tracing the earliest stages of the formation of Milky Way (~ 12 109 yrs) ...
File
... much bigger ‘mountain’, and it's much further away. This is called parallax. The angle between you and a nearby object changes much more rapidly as you pass them than the angle does for far away objects. Take a flashlight into a dark room and stand next to a wall. Start wiggling the flashlight, and ...
... much bigger ‘mountain’, and it's much further away. This is called parallax. The angle between you and a nearby object changes much more rapidly as you pass them than the angle does for far away objects. Take a flashlight into a dark room and stand next to a wall. Start wiggling the flashlight, and ...
Cluster and Association Members
... we get its age, distance, reddening as well as (to some extent) the overall metallicity and thus its mass “for free” from the cluster analysis. Such an analysis is always based on the isochrone fitting technique (Jørgensen & Lindegren 2005). Extensive grids of stellar tracks covering the most importa ...
... we get its age, distance, reddening as well as (to some extent) the overall metallicity and thus its mass “for free” from the cluster analysis. Such an analysis is always based on the isochrone fitting technique (Jørgensen & Lindegren 2005). Extensive grids of stellar tracks covering the most importa ...
Lecture 12
... • The luminosity is an intrinsic property of the star, not based on how far away it is. • A star's luminosity tells you about the internal physics of the star and is a much more important quantity than the ...
... • The luminosity is an intrinsic property of the star, not based on how far away it is. • A star's luminosity tells you about the internal physics of the star and is a much more important quantity than the ...
The Milky Way * A Classic Galaxy
... Udalski et al. 2001), as long as one uses infrared luminosities. This is what modern astronomers do. (in the old days, before IR technology, this issue caused a lot of confusion in using Cepheids as distance indicators!) ...
... Udalski et al. 2001), as long as one uses infrared luminosities. This is what modern astronomers do. (in the old days, before IR technology, this issue caused a lot of confusion in using Cepheids as distance indicators!) ...
Compare the following sets of stars using the words: BRIGHTER or
... 22. What determines the life cycle path the star will take in the above diagram? The mass of the gas cloud (nebula) 23. Name the forces involved in the following processes: A. Gas/dust from a stellar nursery come together to form stars: Gravity B. Stars are made of gas, but keep a size/shape (equili ...
... 22. What determines the life cycle path the star will take in the above diagram? The mass of the gas cloud (nebula) 23. Name the forces involved in the following processes: A. Gas/dust from a stellar nursery come together to form stars: Gravity B. Stars are made of gas, but keep a size/shape (equili ...
Stars and Universe Test Review - Garnet Valley School District
... 1. __________________________ large, glowing spheres of gas that generate light through nuclear fusion in their cores 2. __________________________ hot, very dense, Earth-sized stars 3. __________________________ matter that does not give off electromagnetic radiation 4. __________________________ a ...
... 1. __________________________ large, glowing spheres of gas that generate light through nuclear fusion in their cores 2. __________________________ hot, very dense, Earth-sized stars 3. __________________________ matter that does not give off electromagnetic radiation 4. __________________________ a ...
Cosmo: Student`s Workbook
... In 1837 parallax of a star was detected for the first time. The apparent movement of the star against the distant background was so slight that it needed the best telescope technology the 19th Century could provide before it was detectable. Today parallax will detect a star out to a distance of 2-30 ...
... In 1837 parallax of a star was detected for the first time. The apparent movement of the star against the distant background was so slight that it needed the best telescope technology the 19th Century could provide before it was detectable. Today parallax will detect a star out to a distance of 2-30 ...
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.