Finding the North Star
... Ursa Major is easy to find, because in the middle of it are seven really bright stars. Some people call these seven stars the “Big Dipper,” others call them “Charles’s Wain” or “The Plough.” Different cultures have other names for these stars. ...
... Ursa Major is easy to find, because in the middle of it are seven really bright stars. Some people call these seven stars the “Big Dipper,” others call them “Charles’s Wain” or “The Plough.” Different cultures have other names for these stars. ...
Oct 06, 2001
... C) It is a shell of gas ejected from a star late in its life. D) It is what is left when a white dwarf star explodes as a supernova. 8) What makes a high-mass star's core collapse? A) Energy from its outer layers compresses its core. B) The only thing that can make a star's core collapse is a collis ...
... C) It is a shell of gas ejected from a star late in its life. D) It is what is left when a white dwarf star explodes as a supernova. 8) What makes a high-mass star's core collapse? A) Energy from its outer layers compresses its core. B) The only thing that can make a star's core collapse is a collis ...
Exoplanet
... starlight. That's why many of the first planets discovered are Jupiter-class (300 times as massive as Earth), with orbits very close to their parent stars. ...
... starlight. That's why many of the first planets discovered are Jupiter-class (300 times as massive as Earth), with orbits very close to their parent stars. ...
Lecture 11, PPT version
... the “zero velocity” line pattern. The curved magenta line above shows you how one particular black absorption line sweeps up and down the spectrum due to orbital motion. ...
... the “zero velocity” line pattern. The curved magenta line above shows you how one particular black absorption line sweeps up and down the spectrum due to orbital motion. ...
6 Physics 111 HW16 - University of St. Thomas
... r × p) the angular momentum of the ball about point O in the three places (a, b, and c) indicated. ...
... r × p) the angular momentum of the ball about point O in the three places (a, b, and c) indicated. ...
What is your wager?
... - if you are correct, add the waged amount to your total score - if you are not correct, subtract the waged amount from your total score • You must wager at least $100 for each question. • You can ONLY wager $100 if you are at $100 or less (like zero). ...
... - if you are correct, add the waged amount to your total score - if you are not correct, subtract the waged amount from your total score • You must wager at least $100 for each question. • You can ONLY wager $100 if you are at $100 or less (like zero). ...
Answer Key
... 5. From observations of supernova explosions in distant galaxies, it is predicted that there should be about five supernovae per century in our galaxy, whereas we have seen only about one every 300 years from Earth. Why is this? A) Most supernovae occur in the Milky Way, which can be seen only from ...
... 5. From observations of supernova explosions in distant galaxies, it is predicted that there should be about five supernovae per century in our galaxy, whereas we have seen only about one every 300 years from Earth. Why is this? A) Most supernovae occur in the Milky Way, which can be seen only from ...
Stellar Evolution
... After the helium flash, the radius decreases, but the star remains a giant on the horizontal branch. As the helium in the core fuses to carbon, the core becomes hotter and hotter, and the helium burns faster and faster. When the helium is exhausted, the star is now similar to its condition jus ...
... After the helium flash, the radius decreases, but the star remains a giant on the horizontal branch. As the helium in the core fuses to carbon, the core becomes hotter and hotter, and the helium burns faster and faster. When the helium is exhausted, the star is now similar to its condition jus ...
Phase Analysis of RV Tauri and Semi-regular Variables Abstract
... Z UMa is classified as a Semi-Regular variable star and has a period of 195.5 days. The graph below on the left is an example of a failed model-fit attempt and also illustrates Z UMa’s semi-regular light curve. The graph on the right shows the model-fit light curve used for the spectral date of 2453 ...
... Z UMa is classified as a Semi-Regular variable star and has a period of 195.5 days. The graph below on the left is an example of a failed model-fit attempt and also illustrates Z UMa’s semi-regular light curve. The graph on the right shows the model-fit light curve used for the spectral date of 2453 ...
Lecture 10: Stars
... & Your right eye is the Earth in June Watch the apparent motion of your thumb against a distant reference point (repeat at arm’s length) Which “move” more -- closer or farther objects? ...
... & Your right eye is the Earth in June Watch the apparent motion of your thumb against a distant reference point (repeat at arm’s length) Which “move” more -- closer or farther objects? ...
Lecture 19 The Milky Way Galaxy
... - Contains most GMCs, so most star formation takes place in disk - Contains all open clusters, a few million to a billion years old - By proportion, the disk is thinner than a pizza crust (not deep dish!) ...
... - Contains most GMCs, so most star formation takes place in disk - Contains all open clusters, a few million to a billion years old - By proportion, the disk is thinner than a pizza crust (not deep dish!) ...
Protostars and planets
... known were those in the Solar System: the most massive of them is only MJupiter ≈ 10−3 M⊙ , and there are many of them follow approximately circular orbits about the Sun (indeed “planet” comes from Greek “wanderer” because planets appear to move through the fixed stars). Classifications based on mas ...
... known were those in the Solar System: the most massive of them is only MJupiter ≈ 10−3 M⊙ , and there are many of them follow approximately circular orbits about the Sun (indeed “planet” comes from Greek “wanderer” because planets appear to move through the fixed stars). Classifications based on mas ...
The Interstellar Medium and Star Formation
... pebbles, then rocks, then boulders, then planetesimals, then planets. Some planets become massive enough to also accumulate Hydrogen and Helium gas. • However, during and after formation, it seems that some planets are able to migrate in their disks, drifting inwards to settle close to the star. We ...
... pebbles, then rocks, then boulders, then planetesimals, then planets. Some planets become massive enough to also accumulate Hydrogen and Helium gas. • However, during and after formation, it seems that some planets are able to migrate in their disks, drifting inwards to settle close to the star. We ...
Stars
... discussed in searching for extra-solar planets. Doppler shift measurements are usually done on spectral lines. • Essentially all of the mass measurements that we have for stars are for stars in binary systems – two stars orbiting each other. • The mass of the stars can be measured from their velocit ...
... discussed in searching for extra-solar planets. Doppler shift measurements are usually done on spectral lines. • Essentially all of the mass measurements that we have for stars are for stars in binary systems – two stars orbiting each other. • The mass of the stars can be measured from their velocit ...
Astrology, calendars and the dating of Christian festivals.
... Napoleon’s naval forces; however the star would never have been seen from that position. The precise South Celestial Pole can be found easily using Canopus and another star Achernar with a magnitude of 0.50 which can be easily seen with the naked eye. Make an imaginary equilateral triangle and place ...
... Napoleon’s naval forces; however the star would never have been seen from that position. The precise South Celestial Pole can be found easily using Canopus and another star Achernar with a magnitude of 0.50 which can be easily seen with the naked eye. Make an imaginary equilateral triangle and place ...
Stellar Evolution: the Death of Stars
... 1. What kinds of nuclear reactions occur within a star like the Sun as it ages? 2. Where did the carbon atoms in our bodies come from? 3. What is a planetary nebula, and what does it have to do with planets? 4. What is a white dwarf star? 5. Why do high-mass stars go through more evolutionary stages ...
... 1. What kinds of nuclear reactions occur within a star like the Sun as it ages? 2. Where did the carbon atoms in our bodies come from? 3. What is a planetary nebula, and what does it have to do with planets? 4. What is a white dwarf star? 5. Why do high-mass stars go through more evolutionary stages ...
Document
... cloud, stars will either become low, medium or high mass stars. ALL of the stars create Helium from fusing together two Hydrogen nuclei. Low Mass Stars ...
... cloud, stars will either become low, medium or high mass stars. ALL of the stars create Helium from fusing together two Hydrogen nuclei. Low Mass Stars ...
Spring `03 final exam study guide
... distance from the planets’ centers. The period of the satellite of planet X, though, is greater than that of the satellite of planet Y. Which planet must have the greater mass? Explain your reasoning. 16. Which planets have rings? 17. If you were classifying the planets by size only, you might make ...
... distance from the planets’ centers. The period of the satellite of planet X, though, is greater than that of the satellite of planet Y. Which planet must have the greater mass? Explain your reasoning. 16. Which planets have rings? 17. If you were classifying the planets by size only, you might make ...
Ch. 15 Notes
... – Easily identifiable by the three stars of his belt during the fall and winter – Betelgeuse, the hunter’s right shoulder, is a red supergiant star. If it was in our sun’s place it would extend to the orbit of Jupiter. It will explode in a supernova explosion sometime in the next 1000 years. When th ...
... – Easily identifiable by the three stars of his belt during the fall and winter – Betelgeuse, the hunter’s right shoulder, is a red supergiant star. If it was in our sun’s place it would extend to the orbit of Jupiter. It will explode in a supernova explosion sometime in the next 1000 years. When th ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.