Stars and Galaxies part 3
... Stellar Parallax • Because the parallax angle gets increasingly small the further away the star is, parallax can only be used to calculate the distance to stars closer than 400 light-years away, and is most accurate for close stars. • FYI: Hipparcos was a satellite that operated between 1989 and 19 ...
... Stellar Parallax • Because the parallax angle gets increasingly small the further away the star is, parallax can only be used to calculate the distance to stars closer than 400 light-years away, and is most accurate for close stars. • FYI: Hipparcos was a satellite that operated between 1989 and 19 ...
Answer Key
... guess (which can include why you can rule out certain choices from the list). If you get stuck, please seek assistance from your peers, the TA, or the professor. Note: It may be helpful to place your answers on a separate sheet of paper and staple it to this assignment sheet. WARNING: Please DO NOT ...
... guess (which can include why you can rule out certain choices from the list). If you get stuck, please seek assistance from your peers, the TA, or the professor. Note: It may be helpful to place your answers on a separate sheet of paper and staple it to this assignment sheet. WARNING: Please DO NOT ...
Summary of recent research activities
... abundance among galaxies in the local Universe (∼ 1/50 solar; Searle & Sargent 1972, ApJ 173, 25); however, the distance of the galaxy (> 10 Mpc) prevents the detection of the oldest stars and the issue is still open. Then at the end of the ’90s I realized that the Sagittarius dwarf irregular (dIrr) ...
... abundance among galaxies in the local Universe (∼ 1/50 solar; Searle & Sargent 1972, ApJ 173, 25); however, the distance of the galaxy (> 10 Mpc) prevents the detection of the oldest stars and the issue is still open. Then at the end of the ’90s I realized that the Sagittarius dwarf irregular (dIrr) ...
Stars Notes
... Lifetimes of Stars How long a star lives depends on its mass Small stars use up their fuel more slowly than large stars, so they have much longer lives ...
... Lifetimes of Stars How long a star lives depends on its mass Small stars use up their fuel more slowly than large stars, so they have much longer lives ...
Directed Reading Section: Characteristics of Stars
... a. by analyzing the sounds that stars absorb b. by analyzing the light that stars emit c. by analyzing the sounds that stars emit d. by analyzing the light that stars absorb _____ 4. What are spectrographs? a. devices that separate light into different colors b. devices that separate light into diff ...
... a. by analyzing the sounds that stars absorb b. by analyzing the light that stars emit c. by analyzing the sounds that stars emit d. by analyzing the light that stars absorb _____ 4. What are spectrographs? a. devices that separate light into different colors b. devices that separate light into diff ...
30-1 Directed Reading
... Original content Copyright © Holt McDougal. All rights reserved. Additions and changes to the original content are the responsibility of the instructor. ...
... Original content Copyright © Holt McDougal. All rights reserved. Additions and changes to the original content are the responsibility of the instructor. ...
Light Year
... • Mph: miles traveled per hour • Knots: time it takes to travel one nautical mile per hour (A nautical mile is longer than a land mile.) • Mach: an object's speed divided by the speed of sound • Light Year: distance traveled by light in one year • Warp: doesn’t exist, except on Star Trek-speed fast ...
... • Mph: miles traveled per hour • Knots: time it takes to travel one nautical mile per hour (A nautical mile is longer than a land mile.) • Mach: an object's speed divided by the speed of sound • Light Year: distance traveled by light in one year • Warp: doesn’t exist, except on Star Trek-speed fast ...
The Sun, Stars, and Beyond
... • Irregularly shaped galaxies also exist, though fewer in number. • A galaxy’s shape is determined by its rate of spin, and if it has been subject to any collisions or mergers. • These all contain 100 billion stars or more, and there are 100 billion galaxies out there! ...
... • Irregularly shaped galaxies also exist, though fewer in number. • A galaxy’s shape is determined by its rate of spin, and if it has been subject to any collisions or mergers. • These all contain 100 billion stars or more, and there are 100 billion galaxies out there! ...
Lecture Eleven (Powerpoint format)
... attempting at this very moment to measure the spacetime distortion produced by gravitational radiation. The strongest conceivable sources of gravitational radiation are coalescing binary black holes and neutron stars. Even with these incredibly intense and rare events, the expected signal is min ...
... attempting at this very moment to measure the spacetime distortion produced by gravitational radiation. The strongest conceivable sources of gravitational radiation are coalescing binary black holes and neutron stars. Even with these incredibly intense and rare events, the expected signal is min ...
Earth science big bang study guide Students will
... Earth science big bang study guide Students will know the following: ...
... Earth science big bang study guide Students will know the following: ...
Document
... 1. Why is Astronomy different that any other science in the way in which the scientific method is applied (especially when dealing with stars and galaxies)? ...
... 1. Why is Astronomy different that any other science in the way in which the scientific method is applied (especially when dealing with stars and galaxies)? ...
1 WHY DO THE STARS IN ORION LOOK SO DIFFERENT FROM
... Luminosity shows the relationship of stars’ radii and surface temperature. Each of the stars in Table 1 is many times more luminous than our sun, and emits enormous amounts of energy. Luminosity is related to a stars surface area and temperature. Two stars having the same temperature and size will b ...
... Luminosity shows the relationship of stars’ radii and surface temperature. Each of the stars in Table 1 is many times more luminous than our sun, and emits enormous amounts of energy. Luminosity is related to a stars surface area and temperature. Two stars having the same temperature and size will b ...
solutions
... 2 In class, we saw that the line-of-sight velocities to galaxies in a galaxy cluster are distributed about some average value (Recall the clump of galaxies in the pie diagram pointed toward the observer.) The velocities of individual galaxies are caused by the gravitational attraction of the cluster ...
... 2 In class, we saw that the line-of-sight velocities to galaxies in a galaxy cluster are distributed about some average value (Recall the clump of galaxies in the pie diagram pointed toward the observer.) The velocities of individual galaxies are caused by the gravitational attraction of the cluster ...
File
... In this unit we will learn about: • How we measure stars’ distances using parallax • Why a star’s color indicates temperature & how to use Wien’s law to determine temperature • The difference between luminosity and brightness • How we can measure radius using temperature • The magnitude system of s ...
... In this unit we will learn about: • How we measure stars’ distances using parallax • Why a star’s color indicates temperature & how to use Wien’s law to determine temperature • The difference between luminosity and brightness • How we can measure radius using temperature • The magnitude system of s ...
EMS Notes 1617 - Biloxi Public Schools
... to gather and focus light To study the size, composition, and movement of stars and galaxies They make distant objects appear closer and brighter. To find black holes and map galactic centers Some have been used to monitor radio signals given off by earthquakes To map sources and analyze t ...
... to gather and focus light To study the size, composition, and movement of stars and galaxies They make distant objects appear closer and brighter. To find black holes and map galactic centers Some have been used to monitor radio signals given off by earthquakes To map sources and analyze t ...
Astronomers Find The Most Distant Star Clusters Hidden Behind A
... Astronomers Find The Most Distant Star Clusters Hidden Behind A Nearby Cluster ScienceDaily (Jan. 14, 2007) — Astronomers have discovered the most distant population of star clusters ever seen, hidden behind one of the nearest such clusters to Earth. At a distance of more than a billion lightyears, ...
... Astronomers Find The Most Distant Star Clusters Hidden Behind A Nearby Cluster ScienceDaily (Jan. 14, 2007) — Astronomers have discovered the most distant population of star clusters ever seen, hidden behind one of the nearest such clusters to Earth. At a distance of more than a billion lightyears, ...
The Superstructure of the Universe
... stars in the sky are ______________. The average star that can be seen in Earth’s night sky is ____________ light years away. Galaxies tend to group together in ______________________. The _____________ cluster is our local galaxy group of which the Milky _______ is a member. We are about 26,000 lig ...
... stars in the sky are ______________. The average star that can be seen in Earth’s night sky is ____________ light years away. Galaxies tend to group together in ______________________. The _____________ cluster is our local galaxy group of which the Milky _______ is a member. We are about 26,000 lig ...
Stars: the Hertzsprung
... “Vogt-Russell” theorem • The idea of the “Vogt-Russell” theorem for stars is that there is only one way to make a star with a given mass and chemical composition – if we start with a just formed protostar of a given mass and chemical composition, we can calculate how that star will evolve over its ...
... “Vogt-Russell” theorem • The idea of the “Vogt-Russell” theorem for stars is that there is only one way to make a star with a given mass and chemical composition – if we start with a just formed protostar of a given mass and chemical composition, we can calculate how that star will evolve over its ...
galaxy_physics
... Disks are rotationally supported (dynamically cold) Bulges are dispersion supported (dynamically hot) Two extremes along a continuum ...
... Disks are rotationally supported (dynamically cold) Bulges are dispersion supported (dynamically hot) Two extremes along a continuum ...
Ingredients of Life found in distant galaxy, Arecibo astronomer
... Ingredients of Life found in Distant Galaxy, Arecibo astronomers announce. Astronomers from Arecibo Observatory announced at a meeting in Washington, D.C. Today that they had found two of the basic ingredients of life in the distant galaxy Arp 220. The team used the world’s largest telescope, the 30 ...
... Ingredients of Life found in Distant Galaxy, Arecibo astronomers announce. Astronomers from Arecibo Observatory announced at a meeting in Washington, D.C. Today that they had found two of the basic ingredients of life in the distant galaxy Arp 220. The team used the world’s largest telescope, the 30 ...
2.1 Hubble Space Telescope
... Globular clusters are the homesteaders of our Milky Way Galaxy, born during our galaxy’s formation. They are compact swarms of typically hundreds of thousands of stars held together by gravity. The standard picture of a globular cluster is that all of its stars formed at the same time, in the same p ...
... Globular clusters are the homesteaders of our Milky Way Galaxy, born during our galaxy’s formation. They are compact swarms of typically hundreds of thousands of stars held together by gravity. The standard picture of a globular cluster is that all of its stars formed at the same time, in the same p ...
Stellar Luminosities
... • When we learn how to get distances beyond the limits of parallax and sample many more stars, we will find there are stars that are stars that are 106 times the luminosity of the Sun. • This is an enormous range in energy output from stars. This is an important clue in figuring out how they produce ...
... • When we learn how to get distances beyond the limits of parallax and sample many more stars, we will find there are stars that are stars that are 106 times the luminosity of the Sun. • This is an enormous range in energy output from stars. This is an important clue in figuring out how they produce ...
Astronomy Fall 2013 Final Exam History of Astronomy Know: speed
... 11. What is a Galactic Year? How long is our galaxy’s Galactic Year? The orbital period of the Sun around the Milky Way galaxy’s galactic center. It takes 225 million years 12.What is our Sun's location in the Galaxy? About ½ way from the galactic center and the end of the galactic disk; it lies alo ...
... 11. What is a Galactic Year? How long is our galaxy’s Galactic Year? The orbital period of the Sun around the Milky Way galaxy’s galactic center. It takes 225 million years 12.What is our Sun's location in the Galaxy? About ½ way from the galactic center and the end of the galactic disk; it lies alo ...
CELESTIAL BODIES AND BEINGS ASTROLOGY What is astrology
... Extraterrestrial life is life that may exist and originate outside the planet Earth, the only place in the universe currently known by humans to support life. Most scientists hold that if extraterrestrial life exists, its evolution would have occurred independently in different places in the univers ...
... Extraterrestrial life is life that may exist and originate outside the planet Earth, the only place in the universe currently known by humans to support life. Most scientists hold that if extraterrestrial life exists, its evolution would have occurred independently in different places in the univers ...
The Astronomical Unit and Parallax Laboratory Worksheet
... The first page on the graphs handout shows observations of the spectrum of another star, similar to the Sun but far more distant, over the course of a year, as seen from the Earth. The wave ...
... The first page on the graphs handout shows observations of the spectrum of another star, similar to the Sun but far more distant, over the course of a year, as seen from the Earth. The wave ...
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.