Brightness Luminosity and Inverse Square Law
... location is the Power received per unit area, in W/m2 ...
... location is the Power received per unit area, in W/m2 ...
The Stars of Namaqualand
... Jupiter is very bright and therefore very obvious. It is visible all night long most month in the year because it orbit is outside our own. It has a small ring system which is not viewable with a normal telescope. Jupiter is named after the most powerful of the Roman gods, because it is the biggest ...
... Jupiter is very bright and therefore very obvious. It is visible all night long most month in the year because it orbit is outside our own. It has a small ring system which is not viewable with a normal telescope. Jupiter is named after the most powerful of the Roman gods, because it is the biggest ...
2014 State Test
... B8. Which is more luminous: a 3000K star with a radius of 50 R, or a 7500K star with a radius of just 3.5 R? A. The large, cool star C. Both are equally luminous B. The small, hot star D. More information is needed B9. In a binary star system, one star may transfer mass to the other. What is the n ...
... B8. Which is more luminous: a 3000K star with a radius of 50 R, or a 7500K star with a radius of just 3.5 R? A. The large, cool star C. Both are equally luminous B. The small, hot star D. More information is needed B9. In a binary star system, one star may transfer mass to the other. What is the n ...
Massive Star (10 to 15 times the size of our Sun) Nuclear Fusion
... the stars formed elsewhere and migrated to the black hole the star formed near the black hole under unusual circumstances ...
... the stars formed elsewhere and migrated to the black hole the star formed near the black hole under unusual circumstances ...
1/20/09 301 Physics Chapter 12 The Family of Stars Triangulation
... while high-temperature (blue) stars are on the left with cool (red) stars on the right (Note: temperature does not run in a traditional direction) ...
... while high-temperature (blue) stars are on the left with cool (red) stars on the right (Note: temperature does not run in a traditional direction) ...
Famous Constellations
... Ursa Major is also famous and very important because it points to North Star Ursa Major means Big Bear in Latin http://3.bp.blogspot.com/-4XaNePY2HfQ/TaqkEJZbnjI/AAAAAAAAAs8/nIsCHpLt4Q/s1600/Ursa-Major.jpg • The Big Dipper is part of Ursa Major and helps point to Polaris because easy to find in sky ...
... Ursa Major is also famous and very important because it points to North Star Ursa Major means Big Bear in Latin http://3.bp.blogspot.com/-4XaNePY2HfQ/TaqkEJZbnjI/AAAAAAAAAs8/nIsCHpLt4Q/s1600/Ursa-Major.jpg • The Big Dipper is part of Ursa Major and helps point to Polaris because easy to find in sky ...
Study Guide for Unit 4: Stars and Solar System
... Axis-a real or imaginary line that an object spins around Orbit-the path a revolving object takes Phases-the apparent shape of the moon in the sky Concepts to know: *The Earth rotates on an imaginary axis. This action causes day and night. *It takes 24 hours for the Earth to make a complete rotation ...
... Axis-a real or imaginary line that an object spins around Orbit-the path a revolving object takes Phases-the apparent shape of the moon in the sky Concepts to know: *The Earth rotates on an imaginary axis. This action causes day and night. *It takes 24 hours for the Earth to make a complete rotation ...
01 Orders of Magnitude and Units
... Q2. There are about 1x1028 molecules of air in the lab. So by how many orders of magnitude are there more molecules in the Sun than in the lab? A. 1056 / 1028 = 1028 so 28 orders of magnitude more molecules in the Sun. Q3. Determine the ratio of the diameter of a hydrogen atom to the diameter of a ...
... Q2. There are about 1x1028 molecules of air in the lab. So by how many orders of magnitude are there more molecules in the Sun than in the lab? A. 1056 / 1028 = 1028 so 28 orders of magnitude more molecules in the Sun. Q3. Determine the ratio of the diameter of a hydrogen atom to the diameter of a ...
Project 2. CCD Photometry
... Rather than just have one apparent magnitude, measured across the entire visible spectrum we can use a filter to restrict the incoming light to a narrow waveband. If, for instance, we use a filter that only allows light in the blue part of the spectrum, we can measure a star's blue ...
... Rather than just have one apparent magnitude, measured across the entire visible spectrum we can use a filter to restrict the incoming light to a narrow waveband. If, for instance, we use a filter that only allows light in the blue part of the spectrum, we can measure a star's blue ...
Final Review Sheet
... For stars from 0.5 to 2 Msun the star evolves to the upper right hand part of the HR diagram where it finally ignites helium. In the sun. This happens at 150 million K, 10**5 g/cm**3, conditions that are decidedly degenerate. Helium burning ignites in a flash below about 2 Msun. The flash blows out ...
... For stars from 0.5 to 2 Msun the star evolves to the upper right hand part of the HR diagram where it finally ignites helium. In the sun. This happens at 150 million K, 10**5 g/cm**3, conditions that are decidedly degenerate. Helium burning ignites in a flash below about 2 Msun. The flash blows out ...
AST1100 Lecture Notes
... another another possibility: spectral classes. Stars are classified according to their spectral class which consists of a letter and a number. This historical classification is based on the strength of different spectral lines found in the spectra of the stars. It turned out later that these spectra ...
... another another possibility: spectral classes. Stars are classified according to their spectral class which consists of a letter and a number. This historical classification is based on the strength of different spectral lines found in the spectra of the stars. It turned out later that these spectra ...
Lecture 3
... motion of the centroid as it moves back and forth every six months. The lack of parallax apparent to the unaided eye was used as a proof that the Earth did not revolve around the Sun. ...
... motion of the centroid as it moves back and forth every six months. The lack of parallax apparent to the unaided eye was used as a proof that the Earth did not revolve around the Sun. ...
Astronomy 114 Problem Set # 5 Due: 04 Apr 2007 SOLUTIONS 1 1
... 5 The energy-generation rate in a star depends sensitively on the core temperature. Use this fact to explain why a relation between a star’s mass and its luminosity should exist, and why it is not surprising that L ∝ M 3.5 rather than just L ∝ M. One’s first guess might be that the L ∝ M since a lar ...
... 5 The energy-generation rate in a star depends sensitively on the core temperature. Use this fact to explain why a relation between a star’s mass and its luminosity should exist, and why it is not surprising that L ∝ M 3.5 rather than just L ∝ M. One’s first guess might be that the L ∝ M since a lar ...
Note - Overflow Education
... where they have become sufficiently buckles to loop out and then back into the surface. The intense field activity within a sunspot prevents the convection of heat to the surface, thereby reducing its temperature. Sunspots usually occur in pairs or groups, lasting for several days or weeks. All but ...
... where they have become sufficiently buckles to loop out and then back into the surface. The intense field activity within a sunspot prevents the convection of heat to the surface, thereby reducing its temperature. Sunspots usually occur in pairs or groups, lasting for several days or weeks. All but ...
THE CHANGING SKY
... If you overshoot 1.5, use the left mouse-button to regain it. One important star is the North Star or Polaris. It is (almost) directly above the North Pole so that it appears fixed while all the other stars appear to rotate about it. 2. Go to a north view of the sky and click on the H button (at lef ...
... If you overshoot 1.5, use the left mouse-button to regain it. One important star is the North Star or Polaris. It is (almost) directly above the North Pole so that it appears fixed while all the other stars appear to rotate about it. 2. Go to a north view of the sky and click on the H button (at lef ...
Announcements - Lick Observatory
... • Before going on to the evolution of massive stars and supernovae II, we’ll think about the evolution of close binary systems. • There are many multiple star systems in the Galaxy, but for the vast majority, the separation of the stars is large enough that one star doesn’t affect the evolution of t ...
... • Before going on to the evolution of massive stars and supernovae II, we’ll think about the evolution of close binary systems. • There are many multiple star systems in the Galaxy, but for the vast majority, the separation of the stars is large enough that one star doesn’t affect the evolution of t ...
nebula - Harding University
... In these pictures you will see evidence of stellar formation and of the presence of disk-like structures surrounding these new stars. The four massive stars that dominate this region are emitting radiation and gasses which are interacting with the smaller young stars being formed. These stellar ...
... In these pictures you will see evidence of stellar formation and of the presence of disk-like structures surrounding these new stars. The four massive stars that dominate this region are emitting radiation and gasses which are interacting with the smaller young stars being formed. These stellar ...
Quantum Well Electron Gain Structures and Infrared Detector Arrays
... • At that location, expected temperature is VERY high (about 2000K or higher!) • So … Jupiter-like planet, but closer than Mercury “Hot Jupiter” • How do you make something like that???? ...
... • At that location, expected temperature is VERY high (about 2000K or higher!) • So … Jupiter-like planet, but closer than Mercury “Hot Jupiter” • How do you make something like that???? ...
The star Betelgeuse is about 500 light years away from us. If this star
... b) the photons received on Earth from the distant star have higher frequency c) the photons received on Earth are the same from both stars except there are many more from our sun d) the photons from the distant star are bluer e) not enough information to tell Infrared light waves have __________ co ...
... b) the photons received on Earth from the distant star have higher frequency c) the photons received on Earth are the same from both stars except there are many more from our sun d) the photons from the distant star are bluer e) not enough information to tell Infrared light waves have __________ co ...
Open Houses at the Campus Observatory Astronomical Horizons Lecture
... The sun becomes degenerate The sun loses too much mass as a planetary nebula It takes too long to burn neon. ...
... The sun becomes degenerate The sun loses too much mass as a planetary nebula It takes too long to burn neon. ...
Slide 1
... •Ellipticals have lots of globular clusters (about twice that of disk galaxies) •these fall into two groups based on color •color determined by metallicity, with more metal-rich GCs (redder) possibly the result of galaxy mergers •Ellipticals have much less cool, atomic gas than spiral galaxies •< 1 ...
... •Ellipticals have lots of globular clusters (about twice that of disk galaxies) •these fall into two groups based on color •color determined by metallicity, with more metal-rich GCs (redder) possibly the result of galaxy mergers •Ellipticals have much less cool, atomic gas than spiral galaxies •< 1 ...
Small images
... 11.5 ly main sequence star. Hotter and more luminous than the sun but not as luminous as Sirius. Type F5. May be close to finishing hydrogen burning as its luminosity is a bit high for its mass. Betelgeuse – 9th brightest star. 2nd brightest in Orion. 643 ly Betelgeuse is a red supergiant. It is not ...
... 11.5 ly main sequence star. Hotter and more luminous than the sun but not as luminous as Sirius. Type F5. May be close to finishing hydrogen burning as its luminosity is a bit high for its mass. Betelgeuse – 9th brightest star. 2nd brightest in Orion. 643 ly Betelgeuse is a red supergiant. It is not ...
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.