ppt - University of Arizona
... Period of Galaxy Assembly: Establishing the Hubble sequence, Growth of ...
... Period of Galaxy Assembly: Establishing the Hubble sequence, Growth of ...
1.2 Understanding Light Years
... How far is it from Los Angeles to New York? Pretty far, but it can still be measured in miles or kilometers. How far is it from Earth to the Sun? It’s about one hundred forty-nine million, six hundred thousand kilometers (149,600,000, or 1.496 × 108 km). Because this number is so large, and many oth ...
... How far is it from Los Angeles to New York? Pretty far, but it can still be measured in miles or kilometers. How far is it from Earth to the Sun? It’s about one hundred forty-nine million, six hundred thousand kilometers (149,600,000, or 1.496 × 108 km). Because this number is so large, and many oth ...
Hipparcos distance estimates of the Ophiuchus and the Lupus cloud
... dark molecular clouds and their dense cores. One of the main motivations for these investigations is the study of the process of star and planet formation in its entirety, and a deeper understanding of the effects of the local environment. A key aspect of the scientific analysis of a dark molecular c ...
... dark molecular clouds and their dense cores. One of the main motivations for these investigations is the study of the process of star and planet formation in its entirety, and a deeper understanding of the effects of the local environment. A key aspect of the scientific analysis of a dark molecular c ...
28.1 Understanding Light Years
... How far is it from Los Angeles to New York? Pretty far, but it can still be measured in miles or kilometers. How far is it from Earth to the Sun? It’s about one hundred forty-nine million, six hundred thousand kilometers (149,600,000, or 1.496 × 108 km). Because this number is so large, and many oth ...
... How far is it from Los Angeles to New York? Pretty far, but it can still be measured in miles or kilometers. How far is it from Earth to the Sun? It’s about one hundred forty-nine million, six hundred thousand kilometers (149,600,000, or 1.496 × 108 km). Because this number is so large, and many oth ...
AMUSE-Virgo on the survival of super
... AMUSE-Virgo: latest results 26/100 nuclear super-massive Point-like nuclearX-ray X-raysources source likley detected in 32p/100 black objectsholes ...
... AMUSE-Virgo: latest results 26/100 nuclear super-massive Point-like nuclearX-ray X-raysources source likley detected in 32p/100 black objectsholes ...
3-color photometry of stellar cluster - Kiepenheuer
... One way to organise stars is to plot the luminosity against their spectral type or effective temperature. This kind of diagrams are the so called Hertzsprung-Russell diagrams (HRD). If many stars are plotted it is immediately clear that stars appear in specific ranges of these diagrams. In the cente ...
... One way to organise stars is to plot the luminosity against their spectral type or effective temperature. This kind of diagrams are the so called Hertzsprung-Russell diagrams (HRD). If many stars are plotted it is immediately clear that stars appear in specific ranges of these diagrams. In the cente ...
CONSTELLATIONS OF THE SOUTHERN SKY VOLANS
... Created by Bayer in 1603, this constellation used to be called PiscisVolans, the Flying Fish, before it was shortened to Volans. Volans was one of the 12 new constellations introduced at the end of the 16th century by the Dutch navigators Pieter Dirkszoon Keyser and Frederick de Houtman. Volans repr ...
... Created by Bayer in 1603, this constellation used to be called PiscisVolans, the Flying Fish, before it was shortened to Volans. Volans was one of the 12 new constellations introduced at the end of the 16th century by the Dutch navigators Pieter Dirkszoon Keyser and Frederick de Houtman. Volans repr ...
Lecture 10 Advanced Variable Star Stuff March 18 2003 8:00 PM
... blows off all of its outer layers and leaves behind a hot dense core. There is no more fuel for nuclear fusion (the elements left are mainly things like carbon and iron, not easy to fuse). If we add too much fuel, what happens? If you put too much fuel onto the white dwarf, you can push it over the ...
... blows off all of its outer layers and leaves behind a hot dense core. There is no more fuel for nuclear fusion (the elements left are mainly things like carbon and iron, not easy to fuse). If we add too much fuel, what happens? If you put too much fuel onto the white dwarf, you can push it over the ...
Understanding Stars
... Astronomy 10, Section 101/106 Worksheet 7 Constructing a Temperature-Luminosity Diagram In this exercise, your group will calculate the temperature, luminosity, and radius of a number of stars, and add these values to the temperature-luminosity diagram on the board. The accompanying handout gives r ...
... Astronomy 10, Section 101/106 Worksheet 7 Constructing a Temperature-Luminosity Diagram In this exercise, your group will calculate the temperature, luminosity, and radius of a number of stars, and add these values to the temperature-luminosity diagram on the board. The accompanying handout gives r ...
FRIENDS OF THE PLANETARIUM
... you get a chance to observe Saturn through a telescope, take advantage of it. The view is quite magnificent. May also heralds an important event for many cultures. Located at a declination of +24 degrees and right ascension of 03:44 hours, the Pleiades star cluster will make its reappearance in the ...
... you get a chance to observe Saturn through a telescope, take advantage of it. The view is quite magnificent. May also heralds an important event for many cultures. Located at a declination of +24 degrees and right ascension of 03:44 hours, the Pleiades star cluster will make its reappearance in the ...
Constellations - Sierra Star Gazers
... view. Commonly known as the Trifid Nebula, close inspection will reveal several dark lanes that roughly split the glowing cloud into three major (some say four) portions. As with M8, OIII and Deep Sky filters work well here. Messier 17 is my favorite emission nebula in Sagittarius. Commonly known va ...
... view. Commonly known as the Trifid Nebula, close inspection will reveal several dark lanes that roughly split the glowing cloud into three major (some say four) portions. As with M8, OIII and Deep Sky filters work well here. Messier 17 is my favorite emission nebula in Sagittarius. Commonly known va ...
Build your own Galaxy - McDonald Observatory
... Central bulge: the cotton-ball dome.The rounded structure in the central 6,400 lightyears of the galaxy’s center is what astronomers call the bulge of our galaxy. Disk: foam batting on the poster board. The disk of stars in our galaxy contains gas, dust, and stars. Generally, it is flat like the bri ...
... Central bulge: the cotton-ball dome.The rounded structure in the central 6,400 lightyears of the galaxy’s center is what astronomers call the bulge of our galaxy. Disk: foam batting on the poster board. The disk of stars in our galaxy contains gas, dust, and stars. Generally, it is flat like the bri ...
Question 1
... the source of energy is very small. energy is coming from matter and antimatter. the energy source is rotating rapidly. a chain reaction of supernovas occurs. there are many separate sources of energy in the core. ...
... the source of energy is very small. energy is coming from matter and antimatter. the energy source is rotating rapidly. a chain reaction of supernovas occurs. there are many separate sources of energy in the core. ...
Chapter 10
... observed directly; Doppler shifts in spectroscopic binaries allow measurement of motion; and the period of eclipsing binaries can be measured using intensity variations. Copyright © 2010 Pearson Education, Inc. ...
... observed directly; Doppler shifts in spectroscopic binaries allow measurement of motion; and the period of eclipsing binaries can be measured using intensity variations. Copyright © 2010 Pearson Education, Inc. ...
AY2 - Overview of the Universe
... 8) You are racing away from Earth in a super spaceship in which you can continually increase your speed. Which of the following best explains how people on Earth will perceive your speed? A) Without more information, it is impossible to know how fast you would see a light beam from Earth coming towa ...
... 8) You are racing away from Earth in a super spaceship in which you can continually increase your speed. Which of the following best explains how people on Earth will perceive your speed? A) Without more information, it is impossible to know how fast you would see a light beam from Earth coming towa ...
Fulltext PDF - Indian Academy of Sciences
... Figure 4. (a) If the angular velocity Ω was constant, then a given region of the galaxy would retain the same shape and only change in orientation. In this case, there would be no change in the distance between the Sun and any star. Hence there would be no Doppler shift. However, there would be prop ...
... Figure 4. (a) If the angular velocity Ω was constant, then a given region of the galaxy would retain the same shape and only change in orientation. In this case, there would be no change in the distance between the Sun and any star. Hence there would be no Doppler shift. However, there would be prop ...
What color are stars?
... Stars are found in a wide range of colors, from red through violet as well as white. ...
... Stars are found in a wide range of colors, from red through violet as well as white. ...
Solutions
... 2. Type Ia and Type II Supernovae are each explosions that signify the death of a star and which are briefly as luminous as an entire galaxy. However, they are very different sorts of objects. What is the original source of the energy which powers each type of explosion? (I.e. where did the energy ...
... 2. Type Ia and Type II Supernovae are each explosions that signify the death of a star and which are briefly as luminous as an entire galaxy. However, they are very different sorts of objects. What is the original source of the energy which powers each type of explosion? (I.e. where did the energy ...
Slide 1
... lot in recent years • At one point, the Sun was thought to be inside the shell between the LB and Loop 1 • Now they’re believed to be separate ...
... lot in recent years • At one point, the Sun was thought to be inside the shell between the LB and Loop 1 • Now they’re believed to be separate ...
Galaxy Properties - Tufts Institute of Cosmology
... Masses up to 1012 solar Masses Magnitdes -7 to -22 Sizes 5 to 50 kpc Dust ~ 10% Warm gas Stars all population II in halo & Bulge; Population I otherwise • Colors B-V ~ mostly 0.9 Æ “red” • Metallicity varies though roughly solar to 3 times solar ...
... Masses up to 1012 solar Masses Magnitdes -7 to -22 Sizes 5 to 50 kpc Dust ~ 10% Warm gas Stars all population II in halo & Bulge; Population I otherwise • Colors B-V ~ mostly 0.9 Æ “red” • Metallicity varies though roughly solar to 3 times solar ...
Star-D_Teacher_Guide - The University of Texas at Dallas
... look at a map and suggest a location that is about the right distance from your town for Proxima Centauri on the model. You may wish to point out to the students that a map is a scale model, too. 2. How does the choice of Alpha Centauri A as the star from which the other distances are measured affec ...
... look at a map and suggest a location that is about the right distance from your town for Proxima Centauri on the model. You may wish to point out to the students that a map is a scale model, too. 2. How does the choice of Alpha Centauri A as the star from which the other distances are measured affec ...
Gravitationally Lensed Galaxy
... Observations of star positions during a solar eclipse in 1919 proved this theory correct. Stars near the darkened Sun behaved exactly as Einstein predicted; the Sun’s gravity bent their light, causing an apparent shift in their positions. In 1937, astronomer Fritz Zwicky applied Einstein’s theory on ...
... Observations of star positions during a solar eclipse in 1919 proved this theory correct. Stars near the darkened Sun behaved exactly as Einstein predicted; the Sun’s gravity bent their light, causing an apparent shift in their positions. In 1937, astronomer Fritz Zwicky applied Einstein’s theory on ...
Logarithms and Earthquake Magnitude
... This is clearly an improvement, but still a bit difficult to work with. Logarithms provide a convenient way to deal with numbers that span a large range. In the case of earthquakes, the Richter magnitude scale has been defined as follows: Magnitude = log10 (A / Azero), where A is the amplitude measu ...
... This is clearly an improvement, but still a bit difficult to work with. Logarithms provide a convenient way to deal with numbers that span a large range. In the case of earthquakes, the Richter magnitude scale has been defined as follows: Magnitude = log10 (A / Azero), where A is the amplitude measu ...
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.