Chapter 5 Notes
... 4. ________ __________ in the northern sky appear to circle around Polaris and are visible all year. B. Star ___________ 1. __________ ___________– measure of the amount of light a star actually gives off. 2. ____________ ___________ – measure of the amount of a star’s light received on Earth ...
... 4. ________ __________ in the northern sky appear to circle around Polaris and are visible all year. B. Star ___________ 1. __________ ___________– measure of the amount of light a star actually gives off. 2. ____________ ___________ – measure of the amount of a star’s light received on Earth ...
What`s in the sky tonight - Forsyth Astronomical Society
... Asteroid bombardment over billions of years has left the lunar surface pockmarked with craters of all sizes, and covered with solidified lava, rubble, and dust. Glimpses of the original surface, or crust, are rare, and views into the deep crust are rarer still. Fortunately, a crater on the edge of t ...
... Asteroid bombardment over billions of years has left the lunar surface pockmarked with craters of all sizes, and covered with solidified lava, rubble, and dust. Glimpses of the original surface, or crust, are rare, and views into the deep crust are rarer still. Fortunately, a crater on the edge of t ...
Stars on the HR Diagram
... became the key to understanding the life cycles of stars and giving a large hint to what kinds of stars are most populous throughout the universe. Astronomers call the plot of stars from the upper left to the lower right of the HR diagram, the “main sequence” and 90% of all stars plot along this cur ...
... became the key to understanding the life cycles of stars and giving a large hint to what kinds of stars are most populous throughout the universe. Astronomers call the plot of stars from the upper left to the lower right of the HR diagram, the “main sequence” and 90% of all stars plot along this cur ...
Learning Objectives - UNC Physics and Astronomy
... C. DISTANCE TO AND SIZE OF SPIRAL NEBULAE In section B, you observed a random sample of spiral nebulae. First we must determine how far away each is. We have randomly selected a known Cepheid variable star in each spiral nebula and have listed its average apparent magnitude (think average brightnes ...
... C. DISTANCE TO AND SIZE OF SPIRAL NEBULAE In section B, you observed a random sample of spiral nebulae. First we must determine how far away each is. We have randomly selected a known Cepheid variable star in each spiral nebula and have listed its average apparent magnitude (think average brightnes ...
Die Sonne im Röntgenlicht - ST-ECF
... Why Galactic Center? The only nuclear region in which stellar population can be resolved. We can learn about: • Spatial and kinematic distributions of individual stellar populations. • Star formation mode and history. • Initial mass function and mass/light ratio. • Interplay among stars, the ISM, a ...
... Why Galactic Center? The only nuclear region in which stellar population can be resolved. We can learn about: • Spatial and kinematic distributions of individual stellar populations. • Star formation mode and history. • Initial mass function and mass/light ratio. • Interplay among stars, the ISM, a ...
The Milky Way as a Spiral galaxy
... By the 1700’s the old notion that the Earth was the center of the Universe was overthrown by the success of Newton’s theory of universal gravitation, a theory which explained the motion of the planets around the Sun. It became respectable to see the stars as other suns, like our Sun, but scattered ...
... By the 1700’s the old notion that the Earth was the center of the Universe was overthrown by the success of Newton’s theory of universal gravitation, a theory which explained the motion of the planets around the Sun. It became respectable to see the stars as other suns, like our Sun, but scattered ...
Learning Objectives - UNC Physics and Astronomy
... distance: You never know if you are looking at a low-luminosity star nearby (A) or a high-luminosity star far away (B): ...
... distance: You never know if you are looking at a low-luminosity star nearby (A) or a high-luminosity star far away (B): ...
Evolved massive stars in W33 and in GMC G23.3-0.3
... objects has the luminosity of a RSG star. Several dense molecular cores that may harbor proto clusters were recently discovered on the east side of the cloud (Immer et al. 2014). We were able to identify episods of sequential star formation: evolved massive stars/clusters that are triggering these n ...
... objects has the luminosity of a RSG star. Several dense molecular cores that may harbor proto clusters were recently discovered on the east side of the cloud (Immer et al. 2014). We were able to identify episods of sequential star formation: evolved massive stars/clusters that are triggering these n ...
Binary Star Par 1802 Word Document
... Tennessee, have come across a binary star system, Par 1802 in the 1500 light-year distant Orion Nebula, which throws up questions. It consists of two young stars which have not yet reached the main sequence (i.e. they haven’t settled down into a stable hydrogen-burning state) and each have about 40% ...
... Tennessee, have come across a binary star system, Par 1802 in the 1500 light-year distant Orion Nebula, which throws up questions. It consists of two young stars which have not yet reached the main sequence (i.e. they haven’t settled down into a stable hydrogen-burning state) and each have about 40% ...
Orbits and Dark Matter, the Center of the Milky Way
... Does have mass, produces gravity Nature is unknown Might be normal matter in a form that doesn’t emit much light – very small and dim star, little black holes • More likely it is elementary particles other than normal matter ...
... Does have mass, produces gravity Nature is unknown Might be normal matter in a form that doesn’t emit much light – very small and dim star, little black holes • More likely it is elementary particles other than normal matter ...
Types of Galaxies - Spring Branch ISD
... 19. How can astronomers infer which elements are found in a star? They can compare a star’s spectrum with the known spectra of different elements 20. Stars at different temperatures produce different line spectra 21. How can astronomers infer how hot a star is? They can compare a star’s spectrum wit ...
... 19. How can astronomers infer which elements are found in a star? They can compare a star’s spectrum with the known spectra of different elements 20. Stars at different temperatures produce different line spectra 21. How can astronomers infer how hot a star is? They can compare a star’s spectrum wit ...
Astronomy Study Guide
... 19. How can astronomers infer which elements are found in a star? They can compare a star’s spectrum with the known spectra of different elements 20. Stars at different temperatures produce different line spectra 21. How can astronomers infer how hot a star is? They can compare a star’s spectrum wit ...
... 19. How can astronomers infer which elements are found in a star? They can compare a star’s spectrum with the known spectra of different elements 20. Stars at different temperatures produce different line spectra 21. How can astronomers infer how hot a star is? They can compare a star’s spectrum wit ...
Measuring Stars
... No baseline we could draw on earth would be long enough to measure the distance of the stars We must use the diameter of the earth’s orbit – The longest baseline possible – 2 AU Copyright © 2010 Pearson Education, Inc. ...
... No baseline we could draw on earth would be long enough to measure the distance of the stars We must use the diameter of the earth’s orbit – The longest baseline possible – 2 AU Copyright © 2010 Pearson Education, Inc. ...
Macro\micro - shoukath.net
... The Sun now is a small star in the middle of thousands of stars... ...
... The Sun now is a small star in the middle of thousands of stars... ...
Chapter 5
... expand its power and territory Indigenous someone born in a country; the first inhabitants of an area Compass – an instrument used for finding the direction a ship is travelling – origin China about 1700 yrs ago – used by Muslim travellers Astrolabe - used the North Star or Sun to calculate la ...
... expand its power and territory Indigenous someone born in a country; the first inhabitants of an area Compass – an instrument used for finding the direction a ship is travelling – origin China about 1700 yrs ago – used by Muslim travellers Astrolabe - used the North Star or Sun to calculate la ...
Kepler`s Second Law
... 2.3b illustrate Kepler’s second law of planetary motion with the aid of a diagram 2.3c demonstrate an understanding of Kepler’s third law relating planetary distances to orbital periods and perform simple calculations using the formula: T 2 = R3 where T is in years and R is in AU ...
... 2.3b illustrate Kepler’s second law of planetary motion with the aid of a diagram 2.3c demonstrate an understanding of Kepler’s third law relating planetary distances to orbital periods and perform simple calculations using the formula: T 2 = R3 where T is in years and R is in AU ...
Physics-Y11-LP3 - All Saints` Catholic High School
... • understand the role of observations of Cepheid variable stars in establishing the scale of the Universe and the nature of most spiral nebulas as distant galaxies • describe some of the new information that telescopes revealed about the Milky Way and objects beyond the Milky Way • recall the main i ...
... • understand the role of observations of Cepheid variable stars in establishing the scale of the Universe and the nature of most spiral nebulas as distant galaxies • describe some of the new information that telescopes revealed about the Milky Way and objects beyond the Milky Way • recall the main i ...
Challenging our Understanding of Stellar Structure and Evolution
... tell us more about the evolutionary mass exchange histories of binaries rather than providing fundamental data to calibrate the properties of stars in general. For noninteracting, non-eclipsing O star binaries, masses are determined by supplementing an SB2 orbit with a precisely determined orbital i ...
... tell us more about the evolutionary mass exchange histories of binaries rather than providing fundamental data to calibrate the properties of stars in general. For noninteracting, non-eclipsing O star binaries, masses are determined by supplementing an SB2 orbit with a precisely determined orbital i ...
PART 3 Galaxies
... If one region of the sky shows nearby stars but no distant stars or galaxies, our view is probably blocked by a) nothing, but directed toward a particularly empty region of space. b) an emission nebula of ionized gas. c) an interstellar gas and dust cloud. d) a concentration of dark matter. ...
... If one region of the sky shows nearby stars but no distant stars or galaxies, our view is probably blocked by a) nothing, but directed toward a particularly empty region of space. b) an emission nebula of ionized gas. c) an interstellar gas and dust cloud. d) a concentration of dark matter. ...
space
... Neptune is about 4 light hours away. Because Neptune receives less than one tenth of one percent of the sunlight that we receive on Earth, astronomers had expected Neptune to be cold ...
... Neptune is about 4 light hours away. Because Neptune receives less than one tenth of one percent of the sunlight that we receive on Earth, astronomers had expected Neptune to be cold ...
PPT - Max-Planck-Institut für Astronomie
... • Light dispersed in across-scan direction in central part of field: ~ 1Å resolution spectroscopy around CaII (850-875nm) for V<17 1-10 km/s radial velocities, abundances • 11 medium band filters for all objects object classification, physical parameters, extinction, absolute fluxes ...
... • Light dispersed in across-scan direction in central part of field: ~ 1Å resolution spectroscopy around CaII (850-875nm) for V<17 1-10 km/s radial velocities, abundances • 11 medium band filters for all objects object classification, physical parameters, extinction, absolute fluxes ...
Determining Distances to Other Galaxies
... stars when their mass (slightly) exceeds 1.4 Msun. The brightness of the explosion should be (roughly) the same for every Type-1 supernova. Type-I Supernovae are standard candles. Knowing their luminosity, and comparing to their measured flux, yields the distance via the inverse-square law. Useful f ...
... stars when their mass (slightly) exceeds 1.4 Msun. The brightness of the explosion should be (roughly) the same for every Type-1 supernova. Type-I Supernovae are standard candles. Knowing their luminosity, and comparing to their measured flux, yields the distance via the inverse-square law. Useful f ...
Lecture (Powerpoint)
... So vastly different that each needs different techniques, units to measure distances ...
... So vastly different that each needs different techniques, units to measure distances ...
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 ...
Astronomy 102, Spring 2003 Solutions to Review Problems
... Given that we’ve talked about how far apart stars are in the galaxy, they almost never run into each other. (It’s a different matter in the cores of globular clusters, and even right at the center of our galaxy, but consider the Solar neighborhood for now.) Thus, if there is a binary star system, al ...
... Given that we’ve talked about how far apart stars are in the galaxy, they almost never run into each other. (It’s a different matter in the cores of globular clusters, and even right at the center of our galaxy, but consider the Solar neighborhood for now.) Thus, if there is a binary star system, al ...
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.