Notes 1 - cloudfront.net
... center of galaxies are the brightest far sounds sound lower than closer sounds (higher) wave lengths move the same as it reaches the eyes/ears things look bluer when you walk closer things look reder when you walk farther away hydrogen & helium make up most of the air billions of galaxies are moving ...
... center of galaxies are the brightest far sounds sound lower than closer sounds (higher) wave lengths move the same as it reaches the eyes/ears things look bluer when you walk closer things look reder when you walk farther away hydrogen & helium make up most of the air billions of galaxies are moving ...
Chapter 24
... • Ellipsoidal shape • About 60% of all galaxies • Most are smaller than spiral galaxies; however, they are also the largest known galaxies ...
... • Ellipsoidal shape • About 60% of all galaxies • Most are smaller than spiral galaxies; however, they are also the largest known galaxies ...
Astronomy_Stars_n_Galaxies_PowerPoint
... that the light given off by a star or galaxy gets “stretched” if it is moving away from us. This causes the light being given off to have a longer wavelength and the object to appear redder than it really is. This is called the red shift. Using Hubble’s idea, astronomers found that all distant galax ...
... that the light given off by a star or galaxy gets “stretched” if it is moving away from us. This causes the light being given off to have a longer wavelength and the object to appear redder than it really is. This is called the red shift. Using Hubble’s idea, astronomers found that all distant galax ...
Implications of the Search and Discovery
... – Population I stars that have access to heavy elements during formation • Star like our Sun worked at least once ...
... – Population I stars that have access to heavy elements during formation • Star like our Sun worked at least once ...
NASA`s Spitzer Images Out-of-This
... throughout the image are massive stellar incubators. With over 160 megapixels, the full detail in this panorama cannot be appreciated without zooming in to various areas of interest (top and bottom rows). Bubbles, or holes, in the red clouds are formed by the powerful outflows from massive groups of ...
... throughout the image are massive stellar incubators. With over 160 megapixels, the full detail in this panorama cannot be appreciated without zooming in to various areas of interest (top and bottom rows). Bubbles, or holes, in the red clouds are formed by the powerful outflows from massive groups of ...
Galaxy / Cluster Ecosystem Ming Sun (University of Alabama in Huntsville)
... Sun + 2007 Later more embedded coronae discovered (Yamasaki+2002; Sun+2002, 2005, 2006) and the first sample in Sun+2007 ...
... Sun + 2007 Later more embedded coronae discovered (Yamasaki+2002; Sun+2002, 2005, 2006) and the first sample in Sun+2007 ...
Implications of the Search and Discovery of Life in the Universe
... – Population I stars that have access to heavy elements during formation • Star like our Sun worked at least once ...
... – Population I stars that have access to heavy elements during formation • Star like our Sun worked at least once ...
PPT
... What have we learned? • How do we measure the distances to galaxies? – The distance-measurement chain begins with parallax measurements that build on radar ranging in our solar system – Using parallax and the relationship between luminosity, distance, and brightness, we can calibrate a series of st ...
... What have we learned? • How do we measure the distances to galaxies? – The distance-measurement chain begins with parallax measurements that build on radar ranging in our solar system – Using parallax and the relationship between luminosity, distance, and brightness, we can calibrate a series of st ...
relativistic time correction on movement of distant galaxies
... constant velocity is stretched by a factor (1+z), as said above. If a galaxy is travelling at say 0.5c, then z=0.5 and scale factor = 1+z = 1+0.5 = 1.5. This means every one second of time on that galaxy appears as 1.5 seconds for us. This happens to every event happening in that galaxy. If a planet ...
... constant velocity is stretched by a factor (1+z), as said above. If a galaxy is travelling at say 0.5c, then z=0.5 and scale factor = 1+z = 1+0.5 = 1.5. This means every one second of time on that galaxy appears as 1.5 seconds for us. This happens to every event happening in that galaxy. If a planet ...
Measuring colour in astronomy
... Many of the galaxies imaged by SDSS are too far away to make out individual features, so one has to measure the spectrum and colour of a whole galaxy. Since the light from a galaxy is just the sum of all the light from the individual stars of which it is made, its spectrum – and hence its colour – i ...
... Many of the galaxies imaged by SDSS are too far away to make out individual features, so one has to measure the spectrum and colour of a whole galaxy. Since the light from a galaxy is just the sum of all the light from the individual stars of which it is made, its spectrum – and hence its colour – i ...
FINAL EXAM Name: ASTRONOMY II - 79202 Spring 1995
... 20. A Type I supernova with MV = ,20 in a distant galaxy is observed with apparent magnitude m = 15. The absorption lines of stars in this galaxy will likely show a redshift A. B. C. D. E. ...
... 20. A Type I supernova with MV = ,20 in a distant galaxy is observed with apparent magnitude m = 15. The absorption lines of stars in this galaxy will likely show a redshift A. B. C. D. E. ...
Document
... soft X-ray flare from 3 galaxies which were classified as non-active from ground based spectra. ...
... soft X-ray flare from 3 galaxies which were classified as non-active from ground based spectra. ...
Question 1
... b) The rotation of the bulge and disk components c) The Sun’s age and age of the globular cluster stars d) The motion of spiral arms and the mass of the central black hole e) The orbital period and distance from the Galactic center of objects near the edge of the Galaxy Explanation: Use the modified ...
... b) The rotation of the bulge and disk components c) The Sun’s age and age of the globular cluster stars d) The motion of spiral arms and the mass of the central black hole e) The orbital period and distance from the Galactic center of objects near the edge of the Galaxy Explanation: Use the modified ...
The Milky Way Galaxy
... Our Galaxy is a collection of stellar and interstellar matter – stars, gas, dust, neutron stars, black holes – held together by gravity. Our view of the Galaxy…. ...
... Our Galaxy is a collection of stellar and interstellar matter – stars, gas, dust, neutron stars, black holes – held together by gravity. Our view of the Galaxy…. ...
MilkyWay
... Our Galaxy is a collection of stellar and interstellar matter – stars, gas, dust, neutron stars, black holes – held together by gravity. Our view of the Galaxy…. ...
... Our Galaxy is a collection of stellar and interstellar matter – stars, gas, dust, neutron stars, black holes – held together by gravity. Our view of the Galaxy…. ...
Part II: Ideas in Conflict.
... galaxy was nearly 220 Mpc from us – farther from us that any previously observed galaxy. For this radio source to produce a radio signal large enough to be detected by a back-yard radio telescope, and to be that far away it must be emitting a HUGE amount of energy – hundreds of times the output of ...
... galaxy was nearly 220 Mpc from us – farther from us that any previously observed galaxy. For this radio source to produce a radio signal large enough to be detected by a back-yard radio telescope, and to be that far away it must be emitting a HUGE amount of energy – hundreds of times the output of ...
The Next 2-3 Weeks
... Important to read through Chapter 17 (Relativity) before I start lecturing on it. Pay particular attention to 17.2 “Intervals & Geodesics” • What is a metric? • The Schwarzschild metric (= non-rotating black hole) • “The orbit of a satellite” (somewhat flakey example) I will present additional mater ...
... Important to read through Chapter 17 (Relativity) before I start lecturing on it. Pay particular attention to 17.2 “Intervals & Geodesics” • What is a metric? • The Schwarzschild metric (= non-rotating black hole) • “The orbit of a satellite” (somewhat flakey example) I will present additional mater ...
TA`s solution set
... 4) Our old friend ”Flat-Earth Fred” is up to some new tricks. He now believes that the Big Bang Model is bogus; he thinks that he lives in a static universe that is both infinitely large and eternally old. Describe what evidence you could provide that would convince Fred that the universe cannot be ...
... 4) Our old friend ”Flat-Earth Fred” is up to some new tricks. He now believes that the Big Bang Model is bogus; he thinks that he lives in a static universe that is both infinitely large and eternally old. Describe what evidence you could provide that would convince Fred that the universe cannot be ...
Galaxies - Indiana University Astronomy
... At least two supernovae have been detected in recent years in the nearby Whirlpool Galaxy, Messier 51. M51 is located at a distance of about 31 million light years (about 10 megaparsecs) in the direction of the constellation Canes Venatici. Stars can explode as supernovae in different ways, and the ...
... At least two supernovae have been detected in recent years in the nearby Whirlpool Galaxy, Messier 51. M51 is located at a distance of about 31 million light years (about 10 megaparsecs) in the direction of the constellation Canes Venatici. Stars can explode as supernovae in different ways, and the ...
Solar Observing in Schools Citizen Science with Zooniverse
... Solar Observing in Schools Funded by the National Science Foundation though grant AST-1351222 ...
... Solar Observing in Schools Funded by the National Science Foundation though grant AST-1351222 ...
Oct - Seattle Astronomical Society
... get an idea what life is like in distant galaxy J100054+023436. Astronomers using NASA’s Spitzer Space Telescope and ground-based observatories have found that the galaxy gives birth to as many as 4000 stars a year. For comparison, in the same period of time the Milky Way produces only about 10. Thi ...
... get an idea what life is like in distant galaxy J100054+023436. Astronomers using NASA’s Spitzer Space Telescope and ground-based observatories have found that the galaxy gives birth to as many as 4000 stars a year. For comparison, in the same period of time the Milky Way produces only about 10. Thi ...
Chapter 16 - Astronomy
... 4. We now know the nature of our Galaxy and other galaxies is closer to Curtis’ explanation. Shapley had made use of some incorrect data and misinterpreted observations of Cepheid variables because it was not known at the time that there were different types. Shapley was more correct in his ideas ab ...
... 4. We now know the nature of our Galaxy and other galaxies is closer to Curtis’ explanation. Shapley had made use of some incorrect data and misinterpreted observations of Cepheid variables because it was not known at the time that there were different types. Shapley was more correct in his ideas ab ...
Galaxy Sorting
... galaxies, called dwarf galaxies, may be the most plentiful galaxies in the universe. Indeed, there are probably so many dwarf galaxies that their combined mass probably exceeds that of all the larger galaxies taken together. But their small size and dimness make them hard to detect and we have o ...
... galaxies, called dwarf galaxies, may be the most plentiful galaxies in the universe. Indeed, there are probably so many dwarf galaxies that their combined mass probably exceeds that of all the larger galaxies taken together. But their small size and dimness make them hard to detect and we have o ...
Chapter 15 Test Study Sheet
... Chapter 15: The Universe Test Study Sheet California Science Standard 8.4: The structure and composition of the universe can be learned from studying stars and galaxies and their evolution. As a basis for understanding this concept: a. Students know galaxies are clusters of billions of stars and may ...
... Chapter 15: The Universe Test Study Sheet California Science Standard 8.4: The structure and composition of the universe can be learned from studying stars and galaxies and their evolution. As a basis for understanding this concept: a. Students know galaxies are clusters of billions of stars and may ...
Galaxy Zoo
Galaxy Zoo is a crowdsourced astronomy project which invites people to assist in the morphological classification of large numbers of galaxies. (e.g.) It is an example of citizen science as it enlists the help of members of the public to help in scientific research. There have been seven versions up to July 2014, which are outlined in this article. Galaxy Zoo is part of the Zooniverse, a group of citizen science projects.