The Milky Way Galaxy
... presence of dark nebulae and dust in the Galaxy. Interstellar extinction blocks out all the star far away from the sun. ...
... presence of dark nebulae and dust in the Galaxy. Interstellar extinction blocks out all the star far away from the sun. ...
ppt
... • From there we can calculate how much further away the star must be than the Sun to make it the brightness we see from Earth • Delta Cephei shows has a period of about 5 days • This is a reasonably bright star in the constellation of Cepheus • Cepheids are in other galaxies also, and used similarly ...
... • From there we can calculate how much further away the star must be than the Sun to make it the brightness we see from Earth • Delta Cephei shows has a period of about 5 days • This is a reasonably bright star in the constellation of Cepheus • Cepheids are in other galaxies also, and used similarly ...
chap17_f03_phints
... A star is determined to have a surface temperature twice that of the Sun, and a luminosity 64X greater. What is this star’s radius, expressed in solar units ? HINT: Problem 4 is an application of the radius – luminosity – temperature relation for stars. Given two of these values, the third is found ...
... A star is determined to have a surface temperature twice that of the Sun, and a luminosity 64X greater. What is this star’s radius, expressed in solar units ? HINT: Problem 4 is an application of the radius – luminosity – temperature relation for stars. Given two of these values, the third is found ...
Absolute Magnitude - School
... Show that the absolute magnitude of Vega is the value shown in the table and calculate the absolute magnitudes of Betelgeuse and Polaris yourself. ...
... Show that the absolute magnitude of Vega is the value shown in the table and calculate the absolute magnitudes of Betelgeuse and Polaris yourself. ...
Spectral Class and Colour index
... Spectral Class and Colour index As we have seen the colour of a star is related to its temperature as a consequence of Wien’s law. λmaxT = constant The spectral class (OBAFGKM) of a main sequence star is also a direct result of its temperature. One (relatively crude) way of determining the temperatu ...
... Spectral Class and Colour index As we have seen the colour of a star is related to its temperature as a consequence of Wien’s law. λmaxT = constant The spectral class (OBAFGKM) of a main sequence star is also a direct result of its temperature. One (relatively crude) way of determining the temperatu ...
The (Stellar) Parallax View
... month it is in the opposite position in its orbit. As a result, we have a baseline the diameter of the Earth’s orbit, roughly 300 million km. The angle the star moves through, its parallax, will be very small, a fraction of an arcsecond at best. If that sounds odd, remember that one degree of angle ...
... month it is in the opposite position in its orbit. As a result, we have a baseline the diameter of the Earth’s orbit, roughly 300 million km. The angle the star moves through, its parallax, will be very small, a fraction of an arcsecond at best. If that sounds odd, remember that one degree of angle ...
Document
... – You find distance by comparing apparent magnitude (or luminosity) with absolute magnitude – Standard candle gives you absolute ...
... – You find distance by comparing apparent magnitude (or luminosity) with absolute magnitude – Standard candle gives you absolute ...
Astronomy Unit Vocabulary Term Definition Example Light years are
... Some stars are brighter than The amount of light an object others. Thus, some stars have emits or gives off. higher luminosities than others. The galaxy we live in. Contains our sun and planets. ...
... Some stars are brighter than The amount of light an object others. Thus, some stars have emits or gives off. higher luminosities than others. The galaxy we live in. Contains our sun and planets. ...
Unit 11 Guide: Concepts of Earth Science Stars, Galaxies, and the
... 1. What are the names and characteristics of the three types of galaxies? What type of galaxy is the Milky Way galaxy? 2. What evidence do scientists use to support the Big Bang Theory? Explain the sequence of events predicted by the Big Bang Theory. 3. Explain Hubble’s Law. 4. Compare and contrast ...
... 1. What are the names and characteristics of the three types of galaxies? What type of galaxy is the Milky Way galaxy? 2. What evidence do scientists use to support the Big Bang Theory? Explain the sequence of events predicted by the Big Bang Theory. 3. Explain Hubble’s Law. 4. Compare and contrast ...
Chapter 27 Stars and Galaxies
... Each star has two magnitudes Two depend on the distance the star is from Earth ...
... Each star has two magnitudes Two depend on the distance the star is from Earth ...
Integrative Studies 410 Our Place in the Universe
... waiting ½ year, not ½ day Baseline: 300 million km Parallax can be used out to about 100 light years The bigger the parallactic angle, the closer the star! ...
... waiting ½ year, not ½ day Baseline: 300 million km Parallax can be used out to about 100 light years The bigger the parallactic angle, the closer the star! ...
What do we see in the night sky - Laureate International College
... A collection of many ___________________ held together by gravity is called a galaxy. There are billions and billions of galaxies in the universe. Our solar system is located in the ___________________ galaxy. Galaxies also contain masses of _____________. The gas is mainly ____________ atoms. Space ...
... A collection of many ___________________ held together by gravity is called a galaxy. There are billions and billions of galaxies in the universe. Our solar system is located in the ___________________ galaxy. Galaxies also contain masses of _____________. The gas is mainly ____________ atoms. Space ...
The Milky Way
... And we know how bright it should be, Result Distance We do this everyday with size. ...
... And we know how bright it should be, Result Distance We do this everyday with size. ...
Word - Sam Davyson
... box, a lux meter and a measuring rule. Taking measurements and plotting them reveals a linear relationship between light intensity and the reciprocal of the distance squared. It turns out that they are in fact proportional to one another. There are some obvious problems with this technique: Don’t ...
... box, a lux meter and a measuring rule. Taking measurements and plotting them reveals a linear relationship between light intensity and the reciprocal of the distance squared. It turns out that they are in fact proportional to one another. There are some obvious problems with this technique: Don’t ...
Document
... And we know how bright it should be, Result Distance We do this everyday with size. ...
... And we know how bright it should be, Result Distance We do this everyday with size. ...
11.3 Measuring Distances in Space
... Despite our smallness, the universe declares the greatness of God’s love. His love removes our sins beyond the ends of our universe for each one of us! “For as high as the heavens are above the earth, so great is His love for those ...
... Despite our smallness, the universe declares the greatness of God’s love. His love removes our sins beyond the ends of our universe for each one of us! “For as high as the heavens are above the earth, so great is His love for those ...
Other Galaxies, their Distances, and the Expansion of the Universe
... Survey Question You see a car on the other side of the road coming towards you with their lights on. When the car is twice as close (that is, at half the original distance), how much brighter are the headlights? ...
... Survey Question You see a car on the other side of the road coming towards you with their lights on. When the car is twice as close (that is, at half the original distance), how much brighter are the headlights? ...
2010_02_04 LP08 Our Galactic Home
... Lasers (reflecting off the Moon) Radar (reflecting off the Moon or Venus) Heliocentric parallax (Earth’s ORBIT as baseline) Moving clusters (Pleiades) H-R Diagram R R Lyrae variable stars (M=0.5) Cepheid variable stars Brightest supergiants (M=-8) “Normal” novae Globular clusters (brightest at M=-10 ...
... Lasers (reflecting off the Moon) Radar (reflecting off the Moon or Venus) Heliocentric parallax (Earth’s ORBIT as baseline) Moving clusters (Pleiades) H-R Diagram R R Lyrae variable stars (M=0.5) Cepheid variable stars Brightest supergiants (M=-8) “Normal” novae Globular clusters (brightest at M=-10 ...
6. Star Colors and the Hertzsprung
... the distance to the Pleiades must be farther by a factor of 10, or 3.16 times farther away. ...
... the distance to the Pleiades must be farther by a factor of 10, or 3.16 times farther away. ...
characteristics of stars/lives of stars
... 7. A star’s brightness as if it were a standard distance from Earth is its 8. A device that breaks light into colors and produces an image is a(n) 9. A unit that is often used to measure distances between stars is a(n) 10. The region of the Hertzsprung-Russell diagram that most stars fall within is ...
... 7. A star’s brightness as if it were a standard distance from Earth is its 8. A device that breaks light into colors and produces an image is a(n) 9. A unit that is often used to measure distances between stars is a(n) 10. The region of the Hertzsprung-Russell diagram that most stars fall within is ...
Chapter 27 Stars and Galaxies
... Each star has two magnitudes – Two depend on the distance the star is from Earth ...
... Each star has two magnitudes – Two depend on the distance the star is from Earth ...
Review_game_and_answers
... Students break into teams of 4 Each team will discuss and answer each question Scoring sheets are handed in at the end. 5 points to winning team ...
... Students break into teams of 4 Each team will discuss and answer each question Scoring sheets are handed in at the end. 5 points to winning team ...
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.