Constellations, Looking Far Away, and Stars/Stellar Evolution
... Read aloud. The graph of how the temperatures and luminosities of stars are related is known as the Hertzsprung-Russell or H-R diagram. From this graph, we can also get an estimate of the size of a star, its radius. Astronomers worked with this graph long before they knew why stars varied in this wa ...
... Read aloud. The graph of how the temperatures and luminosities of stars are related is known as the Hertzsprung-Russell or H-R diagram. From this graph, we can also get an estimate of the size of a star, its radius. Astronomers worked with this graph long before they knew why stars varied in this wa ...
The Milky Way * A Classic Galaxy
... • She studied the Large Magellanic Cloud – what looked like a super star cluster of millions or billions of stars • Found stars with the right color and light curves to be classified as Cepheids • Like, Delta Cephei, Eta Aquilae, and other ...
... • She studied the Large Magellanic Cloud – what looked like a super star cluster of millions or billions of stars • Found stars with the right color and light curves to be classified as Cepheids • Like, Delta Cephei, Eta Aquilae, and other ...
bbColors
... account the size of and distance to the star. So in truth, we are missing a term of R2 /r2 , where R is the radius of the star, and r is the distance to the star (the 4π’s cancel out, obviously). Since we are only measuring magnitude differences in each filter, this term can be separated (by logarit ...
... account the size of and distance to the star. So in truth, we are missing a term of R2 /r2 , where R is the radius of the star, and r is the distance to the star (the 4π’s cancel out, obviously). Since we are only measuring magnitude differences in each filter, this term can be separated (by logarit ...
Name Date Life and Death of a Star 2015 1. In the main
... 36. We know black holes exist because A. they are predicted by the theory of relativity B. gravitational lensing C. their effects on nearby stars D. all of the above 37. It takes four hydrogen nuclei to produce one helium-4 nucleus. A. TRUE B. FALSE ...
... 36. We know black holes exist because A. they are predicted by the theory of relativity B. gravitational lensing C. their effects on nearby stars D. all of the above 37. It takes four hydrogen nuclei to produce one helium-4 nucleus. A. TRUE B. FALSE ...
Lecture 1: Nucleosynthesis, solar composition, chondrites, volatility
... • Earth differentiated into crust, mantle, outer core and inner core relatively quickly (within 30 million years of formation) • BSE should be similar to carbonaceous chondrites in terms of refractory lithophile ...
... • Earth differentiated into crust, mantle, outer core and inner core relatively quickly (within 30 million years of formation) • BSE should be similar to carbonaceous chondrites in terms of refractory lithophile ...
30/12/2015 - Daphne`s Daily Quiz
... British classical musician, Paul Lewis, plays which musical instrument? ...
... British classical musician, Paul Lewis, plays which musical instrument? ...
Notes and Equations
... the major planets move from west to east as part of their revolution around the Sun. However, the are also seen to undergo retrograde motion, in which they move from east to west for a while. This is called retrograde motion, and is particularly pronounced for Mars. ...
... the major planets move from west to east as part of their revolution around the Sun. However, the are also seen to undergo retrograde motion, in which they move from east to west for a while. This is called retrograde motion, and is particularly pronounced for Mars. ...
PHYSICS 113 Assignment #9 SOLUTIONS Chapter 17 13. Starting
... clusters all have approximately the same absolute brightness (i.e. luminosity). These methods work up to distances of nearly one Gpc (= 1,000 Mpc). (vii) The distances to the most remote objects in the universe (e.g. quasars) are found by measuring the redshift of those objects and then by convertin ...
... clusters all have approximately the same absolute brightness (i.e. luminosity). These methods work up to distances of nearly one Gpc (= 1,000 Mpc). (vii) The distances to the most remote objects in the universe (e.g. quasars) are found by measuring the redshift of those objects and then by convertin ...
4. How can we select stars whose planets are likely homes for life?
... The star must be a solar-like star, spectral type G or K, and the planet must be within the life zone of that star so that water can exist as a liquid. For life to develop takes several billion years. A planet with life must be in a solar s system which its star remains on the main sequence (H-R dia ...
... The star must be a solar-like star, spectral type G or K, and the planet must be within the life zone of that star so that water can exist as a liquid. For life to develop takes several billion years. A planet with life must be in a solar s system which its star remains on the main sequence (H-R dia ...
Why do the stars shine?
... 3. Two galaxies orbit each other. Each has about 1011 solar masses, 1/5 in stars and 4/5 in dark matter. They are 100 kpc apart. What is the period? (7x109 years). How many orbits will they complete in the life of the Universe? ...
... 3. Two galaxies orbit each other. Each has about 1011 solar masses, 1/5 in stars and 4/5 in dark matter. They are 100 kpc apart. What is the period? (7x109 years). How many orbits will they complete in the life of the Universe? ...
Planetarium Key Points
... Using a motionless sphere we can define a great circle, the horizon, and its poles, zenith and nadir 2. The daily motion of the sphere All the sky moves from Est to West around an axis that seems fixed on the sphere (for short periods of time as human life) The motion and the sphere define two ...
... Using a motionless sphere we can define a great circle, the horizon, and its poles, zenith and nadir 2. The daily motion of the sphere All the sky moves from Est to West around an axis that seems fixed on the sphere (for short periods of time as human life) The motion and the sphere define two ...
How is the universe both predictable and unpredictable at the same
... next closest star to us is ______________ light years away. - The light you see from some stars was really given off millions of years ago. B. Astronomical Units - Measures distance between objects in the solar system. - Is the average distance between Earth and the Sun…. about 150 million kilometer ...
... next closest star to us is ______________ light years away. - The light you see from some stars was really given off millions of years ago. B. Astronomical Units - Measures distance between objects in the solar system. - Is the average distance between Earth and the Sun…. about 150 million kilometer ...
Chapter 13
... • Intense outward gas flows from surfaces • Occupy H-R diagram just above main-sequence ...
... • Intense outward gas flows from surfaces • Occupy H-R diagram just above main-sequence ...
Can you figure out which of the stars shown here have planets
... because it is one of the closest stars to Earth. There are actually two stars here -- one much larger and hotter than the Sun, and a much fainter "white dwarf" left over when a star like our sun used up its fuel and died. Sirius B was discovered over 150 years ago -- as it orbits around it makes Sir ...
... because it is one of the closest stars to Earth. There are actually two stars here -- one much larger and hotter than the Sun, and a much fainter "white dwarf" left over when a star like our sun used up its fuel and died. Sirius B was discovered over 150 years ago -- as it orbits around it makes Sir ...
Astronomy 114 Problem Set # 6 Due: 11 Apr 2007 SOLUTIONS 1
... V 4/3πr 3 4/3π(6.378 × 106 )3 Note that this is 9 orders of magnitude smaller than the density of the neutron star. The escape velocity is: vescape = ...
... V 4/3πr 3 4/3π(6.378 × 106 )3 Note that this is 9 orders of magnitude smaller than the density of the neutron star. The escape velocity is: vescape = ...
A Study of the Spectroscopic Variability of Select RV Tauri... Charles Kurgatt , Donald K. Walter , Steve Howell
... RV Tauri and Semi-Regular stars are examples of variable stars, a star that is unable to maintain a steady apparent brightness. These changes in brightness may have many causes such as eclipses, stellar rotation, and pulsation. The two types studied here vary in brightness due to pulsations in the p ...
... RV Tauri and Semi-Regular stars are examples of variable stars, a star that is unable to maintain a steady apparent brightness. These changes in brightness may have many causes such as eclipses, stellar rotation, and pulsation. The two types studied here vary in brightness due to pulsations in the p ...
Slides from Dr. Frank`s Lecture17
... 1) The binary separation decreases because of gravitational radiation and other angular momentum losses. 2) The component stars will evolve and change size (for example becoming a red giant) Conclusion: Long period (wide) binaries may never become interacting while short period (close) binaries are ...
... 1) The binary separation decreases because of gravitational radiation and other angular momentum losses. 2) The component stars will evolve and change size (for example becoming a red giant) Conclusion: Long period (wide) binaries may never become interacting while short period (close) binaries are ...
- Lowell Observatory
... We checked the old observations obtained between 1955 and 1962 in Radcliff Observatory, South Africa. Fig. 2 below shows the comparison between the spectra obtained in 1961 and 2005. The similarity is striking. At that time, star A was a WN6 star as it is now. We do not see any absorption lines and ...
... We checked the old observations obtained between 1955 and 1962 in Radcliff Observatory, South Africa. Fig. 2 below shows the comparison between the spectra obtained in 1961 and 2005. The similarity is striking. At that time, star A was a WN6 star as it is now. We do not see any absorption lines and ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.