Astronomy - AG Web Services
... ASTRONOMY 1. Define astronomy and name two important astronomers. 2. Explain the major differences between the following: planets, moons, stars, comets, asteroids, meteoroids, solar systems, and galaxies. 3. Find one interesting fact about each planet in our solar system. Draw a chart or make a disp ...
... ASTRONOMY 1. Define astronomy and name two important astronomers. 2. Explain the major differences between the following: planets, moons, stars, comets, asteroids, meteoroids, solar systems, and galaxies. 3. Find one interesting fact about each planet in our solar system. Draw a chart or make a disp ...
Lives and Deaths of Stars (middle school)
... Outer layers expand due to radiation pressure from a hot core • Surface temperature drops by a factor of ~ 2 • The radius increases by a factor of ~ 100 • Luminosity increases ~ R2 T4 ~ 100-1000 times ...
... Outer layers expand due to radiation pressure from a hot core • Surface temperature drops by a factor of ~ 2 • The radius increases by a factor of ~ 100 • Luminosity increases ~ R2 T4 ~ 100-1000 times ...
Teacher Sheet 1. What variables does the HR Diagram compare
... Although they are cool [red], they are very luminous, and therefore bright. In the Main Sequence, stars that are cool are not as luminous. 13. How do white dwarf stars differ from stars in the Main Sequence? White dwarf stars are very hot [blue], but dim because they are so small. 14. Describe stars ...
... Although they are cool [red], they are very luminous, and therefore bright. In the Main Sequence, stars that are cool are not as luminous. 13. How do white dwarf stars differ from stars in the Main Sequence? White dwarf stars are very hot [blue], but dim because they are so small. 14. Describe stars ...
Life Cycle of a Star
... • Stars begin as a large cloud of gas and dust called a nebula • Once stars are formed they enter the main sequence stage. In this stage they continuously generate energy in the core through nuclear fusion. • Size, structure and composition change very little during this stage. ...
... • Stars begin as a large cloud of gas and dust called a nebula • Once stars are formed they enter the main sequence stage. In this stage they continuously generate energy in the core through nuclear fusion. • Size, structure and composition change very little during this stage. ...
Sample Math problems
... b) The star is moving away from us c) The star is expanding d) The star is moving toward us e) The star is getting hotter. 2) From laboratory measurements, we know that a particular spectral line formed by sodium appears at a wavelength of 589.6 nanometers (nm). You measure the same line in a distan ...
... b) The star is moving away from us c) The star is expanding d) The star is moving toward us e) The star is getting hotter. 2) From laboratory measurements, we know that a particular spectral line formed by sodium appears at a wavelength of 589.6 nanometers (nm). You measure the same line in a distan ...
Solution Key
... This is just like calculating the distance to the Pleiades, which we did in studio, but in globular clusters, only the low mass stub of the main sequence is visible. You can use any point on that stub to get the distance. For example, at B-V=0.5, the apparent visual magnitude V ≈ 18. The absolute vi ...
... This is just like calculating the distance to the Pleiades, which we did in studio, but in globular clusters, only the low mass stub of the main sequence is visible. You can use any point on that stub to get the distance. For example, at B-V=0.5, the apparent visual magnitude V ≈ 18. The absolute vi ...
Document
... • If you know how luminous a star REALLY is and how bright it looks from Earth, you can determine how far away it must be to look that faint. • For any star in the sky, we KNOW: – Apparent Magnitude (m) – Spectral Type (O, B, A, F, G, K, M) – Luminosity Class (Main Sequence, Giant, etc…). These are ...
... • If you know how luminous a star REALLY is and how bright it looks from Earth, you can determine how far away it must be to look that faint. • For any star in the sky, we KNOW: – Apparent Magnitude (m) – Spectral Type (O, B, A, F, G, K, M) – Luminosity Class (Main Sequence, Giant, etc…). These are ...
hw4
... radial motion, magnetic properties, rotation, and color to be determined. An indication (but not direct measurement) of stellar radius, mass, and absolute magnitude can also be obtained from spectral information. The temperature can be determined by scanning the spectrum for the peak (most intense) ...
... radial motion, magnetic properties, rotation, and color to be determined. An indication (but not direct measurement) of stellar radius, mass, and absolute magnitude can also be obtained from spectral information. The temperature can be determined by scanning the spectrum for the peak (most intense) ...
The Life Cycle of a star
... • A supernova can light up the sky for weeks. • The temperature in one can reach 1,000,000,000 °C. • The supernova then either becomes a neutron star or a black hole. ...
... • A supernova can light up the sky for weeks. • The temperature in one can reach 1,000,000,000 °C. • The supernova then either becomes a neutron star or a black hole. ...
Everything Under and Over The Stars
... spinning neutron star when a big star collapses it becomes a neutron star. When that happens the star begins to go faster due to the angular ...
... spinning neutron star when a big star collapses it becomes a neutron star. When that happens the star begins to go faster due to the angular ...
File - SMIC Physics
... Center of the solar system. It is an enormous ball of gas. It is yellow in color. It is in the main sequence. ...
... Center of the solar system. It is an enormous ball of gas. It is yellow in color. It is in the main sequence. ...
Life Cycle of a Star - CullenScience
... Protostars and the Nebula 1. A_____________________is a cloud of dust and gas, composed primarily of hydrogen (97%) and helium (3%). 2. Adding atoms to the center of a protostar is a process astronomers call _______________. 3. In order to achieve life as a star, the protostar will need to achieve a ...
... Protostars and the Nebula 1. A_____________________is a cloud of dust and gas, composed primarily of hydrogen (97%) and helium (3%). 2. Adding atoms to the center of a protostar is a process astronomers call _______________. 3. In order to achieve life as a star, the protostar will need to achieve a ...
Sep 2017 - What`s Out Tonight?
... tens of thousands stars held together by their mutual gravity. All Galilean moons and cloud bands, easily visible at 50x. It is posof the globulars that can be seen in the sky are part of our Milky sible to see the moons with well-focused binoculars. Saturn is Way Galaxy, and there are about 200 of ...
... tens of thousands stars held together by their mutual gravity. All Galilean moons and cloud bands, easily visible at 50x. It is posof the globulars that can be seen in the sky are part of our Milky sible to see the moons with well-focused binoculars. Saturn is Way Galaxy, and there are about 200 of ...
Lecture Notes-PPT
... collect together by gravity. During the exchange of energy between the stars, some stars reach escape velocity from the protocluster and become runaway stars. The rest become gravitationally bound, meaning they will exist as collection orbiting each other forever. ...
... collect together by gravity. During the exchange of energy between the stars, some stars reach escape velocity from the protocluster and become runaway stars. The rest become gravitationally bound, meaning they will exist as collection orbiting each other forever. ...
Calculating Main Sequence Lifetimes
... At the beginning of the twentieth century two astronomers, the Danish E. Hertzsprung and the American H. N. Russell, established a correlation between two important stellar parameters: brightness and color. Since ancient times, the brightness of a star is indicated by "magnitudes": 1, 2 and so on, w ...
... At the beginning of the twentieth century two astronomers, the Danish E. Hertzsprung and the American H. N. Russell, established a correlation between two important stellar parameters: brightness and color. Since ancient times, the brightness of a star is indicated by "magnitudes": 1, 2 and so on, w ...
Review Questions for Chp 2
... 14. dies out to red dwarf, brown dwarf, black dwarf 15. main –sequence to red dwarf to white dwarf 16. planetary nebula 17. black hole or neutron star 18. watch planetary nebula or stellar gas swirl into black hole 19. main sequence 20. main sequence 21. the ability to use light broken down through ...
... 14. dies out to red dwarf, brown dwarf, black dwarf 15. main –sequence to red dwarf to white dwarf 16. planetary nebula 17. black hole or neutron star 18. watch planetary nebula or stellar gas swirl into black hole 19. main sequence 20. main sequence 21. the ability to use light broken down through ...
Stellar Distances and Magnitudes
... • If all stars were at the same distance, it would be easy to compare their properties. ...
... • If all stars were at the same distance, it would be easy to compare their properties. ...
Geometry Questions
... 1. What is the acceleration due to gravity on the surface of a white dwarf? Let the mass of a white dwarf by approximately 1 solar mass, or 2.0 x 1030 kg, and its radius be approximately that of Earth or 6.4 x 106 m. (J63) 2. What is the acceleration due to gravity on the surface of a neutron star? ...
... 1. What is the acceleration due to gravity on the surface of a white dwarf? Let the mass of a white dwarf by approximately 1 solar mass, or 2.0 x 1030 kg, and its radius be approximately that of Earth or 6.4 x 106 m. (J63) 2. What is the acceleration due to gravity on the surface of a neutron star? ...
North Star
... 2. Greek letter (Alpha, Beta, Gamma, Delta, Epsilon, . . .) Labeled in an approximate order of decreasing brightness for stars in the constellation. ...
... 2. Greek letter (Alpha, Beta, Gamma, Delta, Epsilon, . . .) Labeled in an approximate order of decreasing brightness for stars in the constellation. ...
Measuring the Stars
... road to the chemist, but that's just peanuts to space…” To be fair though, when confronted by the sheer enormity of the distances between the stars, better minds than the one responsible for the Guide's introduction have faltered. Some invite you to consider for a moment a peanut in Reading and a sm ...
... road to the chemist, but that's just peanuts to space…” To be fair though, when confronted by the sheer enormity of the distances between the stars, better minds than the one responsible for the Guide's introduction have faltered. Some invite you to consider for a moment a peanut in Reading and a sm ...
Chapter 27.2
... • Star is now a red giant (10 times bigger than sun) or a red supergiant (100 times bigger than sun) ...
... • Star is now a red giant (10 times bigger than sun) or a red supergiant (100 times bigger than sun) ...
S90 U5 T3 Notes - Cochrane High School
... Don’t forget! Wavelength measures the distance between two high or low points on a wave. Frequency is the measure of how many waves pass in a given time period. ...
... Don’t forget! Wavelength measures the distance between two high or low points on a wave. Frequency is the measure of how many waves pass in a given time period. ...
Star Jeopardy "Review #1
... one year because the black hole would have the same mass and therefore the same gravitational effect. ...
... one year because the black hole would have the same mass and therefore the same gravitational effect. ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.