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Sample pages 2 PDF
... between type I and type II supernovae any more here.) The glowing remanents of a supernova which occurred in 1054 and was observed by Chinese astronomers can still be seen in the Crab nebula, of which a picture appears in Fig. 2.4. The supernovae are significant because they produce the elements abo ...
... between type I and type II supernovae any more here.) The glowing remanents of a supernova which occurred in 1054 and was observed by Chinese astronomers can still be seen in the Crab nebula, of which a picture appears in Fig. 2.4. The supernovae are significant because they produce the elements abo ...
Other Galaxies, their Distances, and the Expansion of the Universe
... n It can, if it has a companion (that is, it is in a binary star). n ...
... n It can, if it has a companion (that is, it is in a binary star). n ...
6, 19, 24, 37, 47 and 65
... 19. At what altitude above Earth’s surface would the gravitational acceleration be 4.9 m/s2? Answer: 2.6 ...
... 19. At what altitude above Earth’s surface would the gravitational acceleration be 4.9 m/s2? Answer: 2.6 ...
... Historical evolution of the Sun 1. Compared to now, was the Sun fainter or brighter at the moment fusion began (point "P")? 2. Had you been on Earth around the time of its formation (a few tens of millions of years after the Sun's), would the Sun then look brighter or fainter than it does today? The ...
Distribution of Elements in the Earth`s Crust
... “Some part of our being knows this is where we came from. We long to return. And we can. Because the cosmos is also within us. We are made of star stuff. We are a way for the cosmos to know itself.” —Carl Sagan The universe began about 13.8 billion years ago with the big bang, an event in which enor ...
... “Some part of our being knows this is where we came from. We long to return. And we can. Because the cosmos is also within us. We are made of star stuff. We are a way for the cosmos to know itself.” —Carl Sagan The universe began about 13.8 billion years ago with the big bang, an event in which enor ...
Astronomical Ideas Fall 2012 HW 2 solutions 1. a. Compare the
... From the table on the Kepler website, the semimajor axis of the planetʼs orbit is ~0.85 AU (which we can consider to roughly equal the average distance between the star and planet), the temperature of the star is 5518 K (similar to the Sun) and the starʼs radius is ~0.98 of the Sunʼs radius. A = 0.3 ...
... From the table on the Kepler website, the semimajor axis of the planetʼs orbit is ~0.85 AU (which we can consider to roughly equal the average distance between the star and planet), the temperature of the star is 5518 K (similar to the Sun) and the starʼs radius is ~0.98 of the Sunʼs radius. A = 0.3 ...
Document
... c. the star’s absorption spectrum. d. the star’s color. _____ 6. If the universe expands forever, a. the universe will collapse. b. the universe will repeat itself. c. the universe will remain just as it is today. d. stars will age and die and the universe will become cold and dark. _____ 7. The maj ...
... c. the star’s absorption spectrum. d. the star’s color. _____ 6. If the universe expands forever, a. the universe will collapse. b. the universe will repeat itself. c. the universe will remain just as it is today. d. stars will age and die and the universe will become cold and dark. _____ 7. The maj ...
Powerpoint file
... Subdwarf B Stars (sdB) • sdB stars are believed to be core He-burning stars of 0.5 M on the extended horizontal branch that have lost their envelope • Teff ~ 22.000 – 40.000 K • Periods 100 – 250 secs ...
... Subdwarf B Stars (sdB) • sdB stars are believed to be core He-burning stars of 0.5 M on the extended horizontal branch that have lost their envelope • Teff ~ 22.000 – 40.000 K • Periods 100 – 250 secs ...
Astro twopages
... Many of these angles are smaller than a degree and have time-based meanings as well so follow the analogy. 1 degree can be split into smaller units (arcminutes, or ') where 60' = 1 degree. 1' is the finest angular separation an average eye can discern. An arcminute is also split into 60 arcseconds ( ...
... Many of these angles are smaller than a degree and have time-based meanings as well so follow the analogy. 1 degree can be split into smaller units (arcminutes, or ') where 60' = 1 degree. 1' is the finest angular separation an average eye can discern. An arcminute is also split into 60 arcseconds ( ...
Constellation Notes
... How many constellations are there? The sky was divided up into 88 different constellations in 1922. This included 48 ancient constellations listed by the Greek astronomer Ptolemy as well as 40 new constellations. Star Maps The 88 different constellations divide up the entire night sky as seen from a ...
... How many constellations are there? The sky was divided up into 88 different constellations in 1922. This included 48 ancient constellations listed by the Greek astronomer Ptolemy as well as 40 new constellations. Star Maps The 88 different constellations divide up the entire night sky as seen from a ...
Coursework 6 File
... axis asat = 6 × 109 m. The planet undergoes slow inward migration toward the star, and during this process the satellite maintains the same semimajor axis. Determine how close the planet can get to the star before the satellite becomes unbound. Express your answers in metres and in AU (1 AU = 1.5 × ...
... axis asat = 6 × 109 m. The planet undergoes slow inward migration toward the star, and during this process the satellite maintains the same semimajor axis. Determine how close the planet can get to the star before the satellite becomes unbound. Express your answers in metres and in AU (1 AU = 1.5 × ...
I. Layers of the Sun
... 2. High numbers occur every 11 years. 3. Occur in pairs. 4. When 2 sunspots come together, prominences and flares are produced. ...
... 2. High numbers occur every 11 years. 3. Occur in pairs. 4. When 2 sunspots come together, prominences and flares are produced. ...
Earth`s Motions
... • happens because of tidal forces that cause the precession of the equinoxes to vary over time so that the speed of precession is not constant • principal sources of tidal force are the Sun and Moon, which continuously change location relative to each other and thus cause nutation in Earth's axis ...
... • happens because of tidal forces that cause the precession of the equinoxes to vary over time so that the speed of precession is not constant • principal sources of tidal force are the Sun and Moon, which continuously change location relative to each other and thus cause nutation in Earth's axis ...
Sem one 2011 review KEY
... 34. What is the order of the planets, starting nearest the Sun and moving out? MVEMJSUN 35. A nebula is evidence of what event in stellar evolution? Supernova 36. What is a constellation? A connect the dots picture in the sky made of stars. 37. What is a light year? The DISTANCE light can travel in ...
... 34. What is the order of the planets, starting nearest the Sun and moving out? MVEMJSUN 35. A nebula is evidence of what event in stellar evolution? Supernova 36. What is a constellation? A connect the dots picture in the sky made of stars. 37. What is a light year? The DISTANCE light can travel in ...
How many stars are visible to the naked eye in the night sky?
... Since the Canadian Astronaut Program was established in 1983, twelve Canadians have been selected to become astronauts. Currently there are two active Canadian Astronauts. They are: LieutenantColonel Jeremy Hansen and Dr. David SaintJacques. ...
... Since the Canadian Astronaut Program was established in 1983, twelve Canadians have been selected to become astronauts. Currently there are two active Canadian Astronauts. They are: LieutenantColonel Jeremy Hansen and Dr. David SaintJacques. ...
ASTR1010_HW06
... There is a fifth method, not mentioned by the book. This is the astrometric method and it is like method #1, but instead of detecting the wobble of the star spectroscopically, you actually notice that the star’s proper motion through space is not in a straight line, but follows a sinusoidal pattern. ...
... There is a fifth method, not mentioned by the book. This is the astrometric method and it is like method #1, but instead of detecting the wobble of the star spectroscopically, you actually notice that the star’s proper motion through space is not in a straight line, but follows a sinusoidal pattern. ...
Word
... What is the total range in absolute magnitude and also in brightness? Using your knowledge of magnitudes, describe why a star with color index of B-V=1.5 would appear red to the human eye. [HINT: In the above Wiki article you’ll read that “B” stands for blue visual magnitude and “V” stands for yello ...
... What is the total range in absolute magnitude and also in brightness? Using your knowledge of magnitudes, describe why a star with color index of B-V=1.5 would appear red to the human eye. [HINT: In the above Wiki article you’ll read that “B” stands for blue visual magnitude and “V” stands for yello ...
Chapter 14 Origins
... time to discover all of the quarks shown in table 14.2, because they do not all have the same mass. In fact, some have much more mass than others, and these were the difficult ones to discover. Find out which was the last to be discovered and why. ...
... time to discover all of the quarks shown in table 14.2, because they do not all have the same mass. In fact, some have much more mass than others, and these were the difficult ones to discover. Find out which was the last to be discovered and why. ...
YOUR NAME 1 Astronomy 18, UCSC Planets and Planetary
... YOUR NAME ___________________ 13) What was the first frost line of the Solar System? a) The distance from the Sun where temperatures were low enough for metals to condense. Roughly between the Sun and the present-day orbit of Mercury. b) The distance from the Sun where temperatures were low enough ...
... YOUR NAME ___________________ 13) What was the first frost line of the Solar System? a) The distance from the Sun where temperatures were low enough for metals to condense. Roughly between the Sun and the present-day orbit of Mercury. b) The distance from the Sun where temperatures were low enough ...
Notes
... Later discovered with X-ray and optical afterglows lasting several hours – a few days Many have now been associated with host ______________________ at large (cosmological) distances. At least some GRBs are probably related to the _______________ of very massive (> 20 Msun) stars In a supern ...
... Later discovered with X-ray and optical afterglows lasting several hours – a few days Many have now been associated with host ______________________ at large (cosmological) distances. At least some GRBs are probably related to the _______________ of very massive (> 20 Msun) stars In a supern ...
Where Do Chemical Elements Come From?
... star can literally squeeze together two protons, and sometimes, a proton will capture an electron to become a neutron. When two protons and two neutrons band together, they form the nucleus of helium, which is the second element in the periodic table. Then, when two nuclei of helium fuse with each o ...
... star can literally squeeze together two protons, and sometimes, a proton will capture an electron to become a neutron. When two protons and two neutrons band together, they form the nucleus of helium, which is the second element in the periodic table. Then, when two nuclei of helium fuse with each o ...
L19-Review2
... each other. By what factor precisely does the force that they inflict on each other change? They are moved back to 10 inches distance, but now one has a charge that is twice that of before. How does the force differ from the original set-up? ...
... each other. By what factor precisely does the force that they inflict on each other change? They are moved back to 10 inches distance, but now one has a charge that is twice that of before. How does the force differ from the original set-up? ...
Kinds of Stars
... Proxima Centauri – Closest star to Earth. Its magnitude of 11 is no visible to unaided eye. Alpha Centauri – Closest VISIBLE star to Earth with the unaided eye. Both Centauri stars can only be seen at locations within 30 degrees of the south pole. ...
... Proxima Centauri – Closest star to Earth. Its magnitude of 11 is no visible to unaided eye. Alpha Centauri – Closest VISIBLE star to Earth with the unaided eye. Both Centauri stars can only be seen at locations within 30 degrees of the south pole. ...
IK Pegasi
![](https://commons.wikimedia.org/wiki/Special:FilePath/Location_of_IK_Pegasi.png?width=300)
IK Pegasi (or HR 8210) is a binary star system in the constellation Pegasus. It is just luminous enough to be seen with the unaided eye, at a distance of about 150 light years from the Solar System.The primary (IK Pegasi A) is an A-type main-sequence star that displays minor pulsations in luminosity. It is categorized as a Delta Scuti variable star and it has a periodic cycle of luminosity variation that repeats itself about 22.9 times per day. Its companion (IK Pegasi B) is a massive white dwarf—a star that has evolved past the main sequence and is no longer generating energy through nuclear fusion. They orbit each other every 21.7 days with an average separation of about 31 million kilometres, or 19 million miles, or 0.21 astronomical units (AU). This is smaller than the orbit of Mercury around the Sun.IK Pegasi B is the nearest known supernova progenitor candidate. When the primary begins to evolve into a red giant, it is expected to grow to a radius where the white dwarf can accrete matter from the expanded gaseous envelope. When the white dwarf approaches the Chandrasekhar limit of 1.44 solar masses (M☉), it may explode as a Type Ia supernova.