Stars and Their Characteristics
... gravitational pull • hydrogen is used up so gravity takes over, which then produces heat by contraction • entire star expands (Red Giant) • core temperature rises enough for helium to fuse into heavier elements, producing a carbon-oxygen core • surface gases are blown away, leaving core (white ...
... gravitational pull • hydrogen is used up so gravity takes over, which then produces heat by contraction • entire star expands (Red Giant) • core temperature rises enough for helium to fuse into heavier elements, producing a carbon-oxygen core • surface gases are blown away, leaving core (white ...
18-3 constellations RG
... 13. When a star or galaxy moves quickly away from an observer, the light it emits appears redder than it usually would, this effect is called _____________________________________________. 14. When a star or galaxy moves quickly toward an observer, the light it emits appears bluer than it usually w ...
... 13. When a star or galaxy moves quickly away from an observer, the light it emits appears redder than it usually would, this effect is called _____________________________________________. 14. When a star or galaxy moves quickly toward an observer, the light it emits appears bluer than it usually w ...
Lecture Note
... shift of a star as the Earth moves from one side of its orbit to the other (the largest separation of two viewpoints possibly from the Earth) ...
... shift of a star as the Earth moves from one side of its orbit to the other (the largest separation of two viewpoints possibly from the Earth) ...
Introduction Notes - Sunflower Astronomy
... Time: 10 minutes. Beyond The Solar System Nearest star to the Sun is at a distance of 270,000 astronomical units (one astronomical unit is the distance from the Earth to the Sun, 1.48x108 km) or 4.3 light years. This distance is typical of distances between stars in our galaxy. Stars are formed from ...
... Time: 10 minutes. Beyond The Solar System Nearest star to the Sun is at a distance of 270,000 astronomical units (one astronomical unit is the distance from the Earth to the Sun, 1.48x108 km) or 4.3 light years. This distance is typical of distances between stars in our galaxy. Stars are formed from ...
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
... in the sun is being converted to energy. (In this expression, m is mass and c is the speed of light.) Problem 4 The uncertainty in a parallax measurement determined by optical techniques is typically 0.003〞(0.003 arc seconds). How far out into space can we measure distances with~10% accuracy? Radio ...
... in the sun is being converted to energy. (In this expression, m is mass and c is the speed of light.) Problem 4 The uncertainty in a parallax measurement determined by optical techniques is typically 0.003〞(0.003 arc seconds). How far out into space can we measure distances with~10% accuracy? Radio ...
Chapter 15, Galaxies
... they much further away from us than the stars? • Before the 1920s, there were no reliable methods of measuring the distance to the galaxies. Many people believed that the galaxies were located within the Milky Way… How do we measure the distance of objects far away in the universe, much farther than ...
... they much further away from us than the stars? • Before the 1920s, there were no reliable methods of measuring the distance to the galaxies. Many people believed that the galaxies were located within the Milky Way… How do we measure the distance of objects far away in the universe, much farther than ...
KMS Universe Test Study Guide
... 2) What is the name of the galaxy we live in? What type of galaxy is it? Where is our solar system found within this galaxy? Milky Way It is a Spiral Galaxy. Our solar system is found near the end of one arm of the spiral. ...
... 2) What is the name of the galaxy we live in? What type of galaxy is it? Where is our solar system found within this galaxy? Milky Way It is a Spiral Galaxy. Our solar system is found near the end of one arm of the spiral. ...
Astronomy Review - Cockeysville Middle
... The inner planets a terrestrial (rocky), while the outer planets are gaseous. The inner planets have a shorter revolution period (Year Length). As the orbit gets further from the sun, the period of revolution increases. The outer planets are larger. The outer planets have lower densities (as you wou ...
... The inner planets a terrestrial (rocky), while the outer planets are gaseous. The inner planets have a shorter revolution period (Year Length). As the orbit gets further from the sun, the period of revolution increases. The outer planets are larger. The outer planets have lower densities (as you wou ...
ASTRONOMY WEBQUEST…… EXPLORE THE UNIVERSE
... http://library.thinkquest.org/26220/stars/formation.html What is a nebula (click on protostars)? ...
... http://library.thinkquest.org/26220/stars/formation.html What is a nebula (click on protostars)? ...
Astronomy Chapter 13 Name
... D. A type of binary star in which the spectrum lines exhibit a changing Doppler shift as a result of the orbital motion of one star around the other ...
... D. A type of binary star in which the spectrum lines exhibit a changing Doppler shift as a result of the orbital motion of one star around the other ...
NAAP 3 of 7 Determining Astronomical Distance
... Configure the simulator to preset B. The parallax explorer now assumes that our surveyor can make angular observations with a typical error of 3°. Due to this error we will now describe an area where the boat must be located as the overlap of two cones as opposed to a definite location that was the ...
... Configure the simulator to preset B. The parallax explorer now assumes that our surveyor can make angular observations with a typical error of 3°. Due to this error we will now describe an area where the boat must be located as the overlap of two cones as opposed to a definite location that was the ...
Physics 127 Descriptive Astronomy Homework #16
... Zubenelgenubi is the brighter of the two stars by 0.50 magnitudes (or a factor 1.585). No conclusion is possible about the relative luminosities of the two stars, since brightness depends upon luminosity, distance (and sometimes the amount of obscuring material between a star and its observer). ...
... Zubenelgenubi is the brighter of the two stars by 0.50 magnitudes (or a factor 1.585). No conclusion is possible about the relative luminosities of the two stars, since brightness depends upon luminosity, distance (and sometimes the amount of obscuring material between a star and its observer). ...
ppt - Serbian Virtual Observatory - astronomical observatory belgrade
... A double star is more general than a binary. To form a binary a star pair must be gravitationally bound. Consequently, to establish the nature means to examine if a given pair is gravitationally bound or, at least, how probable this is. Why probable, because of data lack, very often the data body i ...
... A double star is more general than a binary. To form a binary a star pair must be gravitationally bound. Consequently, to establish the nature means to examine if a given pair is gravitationally bound or, at least, how probable this is. Why probable, because of data lack, very often the data body i ...
How far away are the Stars?
... Parallax Angle is Small! • The closer the object the larger the parallax. • Parallaxes are usually very small. Parallax of Venus at closest approach (45 million km) is 1 arc minute! • Parallax of nearby (25 light years) stars not observed/measured until 1839! ...
... Parallax Angle is Small! • The closer the object the larger the parallax. • Parallaxes are usually very small. Parallax of Venus at closest approach (45 million km) is 1 arc minute! • Parallax of nearby (25 light years) stars not observed/measured until 1839! ...
Slide 1
... Variable Stars Some stars show intrinsic brightness variations not caused by eclipsing in binary systems. Most important example: d Cephei ...
... Variable Stars Some stars show intrinsic brightness variations not caused by eclipsing in binary systems. Most important example: d Cephei ...
Day 15
... brightness as a measure of distance This assumes that all stars have the same luminosity. The double star data was starting to show that was an incorrect assumption ...
... brightness as a measure of distance This assumes that all stars have the same luminosity. The double star data was starting to show that was an incorrect assumption ...
Galaxies and the Universe
... • There is only one • You are part of it too! • We see it as it was in the past • Contains many other galaxies • Most of it is empty space ...
... • There is only one • You are part of it too! • We see it as it was in the past • Contains many other galaxies • Most of it is empty space ...
globular cluster - Harding University
... When Cepheid variables were first utilized, there were no Cepheid variables close enough to measure their distance using direct parallax measurements. Distances to the Cepheid variables in our own galaxy were determined using statistical techniques, and were dependent upon these theoretical calculat ...
... When Cepheid variables were first utilized, there were no Cepheid variables close enough to measure their distance using direct parallax measurements. Distances to the Cepheid variables in our own galaxy were determined using statistical techniques, and were dependent upon these theoretical calculat ...
1_Introduction
... Gravity makes the Moon orbit the Earth. It makes planets orbit the Sun. What does it do on larger scales? ...
... Gravity makes the Moon orbit the Earth. It makes planets orbit the Sun. What does it do on larger scales? ...
E3 – Stellar distances
... Cepheid variables • At distances greater than Mpc, neither parallax nor spectroscopic parallax can be relied upon to measure the distance to a star. • When we observe another galaxy, all of the stars in that galaxy are approximately the same distance away from the earth. What we really need is a li ...
... Cepheid variables • At distances greater than Mpc, neither parallax nor spectroscopic parallax can be relied upon to measure the distance to a star. • When we observe another galaxy, all of the stars in that galaxy are approximately the same distance away from the earth. What we really need is a li ...
PPT - Mr.E Science
... White dwarf- about the diameter of the Earth Medium Size- about the size of our sun Red Giant- several times the diameter of our Sun Super Red Giant – can be the diameter of our entire solar system ...
... White dwarf- about the diameter of the Earth Medium Size- about the size of our sun Red Giant- several times the diameter of our Sun Super Red Giant – can be the diameter of our entire solar system ...
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.