Measuring Distances - Stockton University
... galaxy approaching them and part of the galaxy running away. This causes the emission from the galaxy to show redshifted, blueshifted, and no-shifted emission. The motion will thus cause a narrow line, e.g., a line due to some element like hydrogen, to be smeared out and to appear broad to the exter ...
... galaxy approaching them and part of the galaxy running away. This causes the emission from the galaxy to show redshifted, blueshifted, and no-shifted emission. The motion will thus cause a narrow line, e.g., a line due to some element like hydrogen, to be smeared out and to appear broad to the exter ...
L2 Star formation Part I
... Star formation takes place in cold, dense gas clouds: The molecular clouds. Stars form in groups or clusters. The largest GMC in Orion is about 1000 light years away. Hot young stars (25-50 million year old) ionize their surroundings and are therefore easily visible. ...
... Star formation takes place in cold, dense gas clouds: The molecular clouds. Stars form in groups or clusters. The largest GMC in Orion is about 1000 light years away. Hot young stars (25-50 million year old) ionize their surroundings and are therefore easily visible. ...
Exercise Solutions
... the effective solar surface temperature Tˇ D 5780 K have been used. From the known radius of the Sun, this gives a radius of about 1.5 AU (approximately the radius of the orbit of Mars) and an average density of about 3:910 7 g cm 3 . The large size and low density and surface temperature indicate ...
... the effective solar surface temperature Tˇ D 5780 K have been used. From the known radius of the Sun, this gives a radius of about 1.5 AU (approximately the radius of the orbit of Mars) and an average density of about 3:910 7 g cm 3 . The large size and low density and surface temperature indicate ...
Neither Star nor Trigram - 5 Yellow Focus of Attention
... comes in as factor behind pole reversal, changing Yin Qi into Yang. As we are practitioners of 9 Stars and Luoshu, then almost as an automation would we presume that such 3 Wood Luoshu had come to account of Star 3 to appear at the central Luoshu Palace. While rather, we’d have such 3 Wood Luoshu in ...
... comes in as factor behind pole reversal, changing Yin Qi into Yang. As we are practitioners of 9 Stars and Luoshu, then almost as an automation would we presume that such 3 Wood Luoshu had come to account of Star 3 to appear at the central Luoshu Palace. While rather, we’d have such 3 Wood Luoshu in ...
Full 11x8.5" Calendar, High Resolution - Chandra X
... When a star like our Sun uses up all of the hydrogen in its core, it becomes what is called a “planetary nebula.” During this stage, the star begins to cool and expand, increasing its radius by tens to hundreds of times its original size. Eventually, the outer layers of the star are swept away by a ...
... When a star like our Sun uses up all of the hydrogen in its core, it becomes what is called a “planetary nebula.” During this stage, the star begins to cool and expand, increasing its radius by tens to hundreds of times its original size. Eventually, the outer layers of the star are swept away by a ...
History of astronomy
... The accuracy of Tycho's best positional measurements was +/- 1 arc minute. This was an improvement of a factor of 10 over previous observations. If the stars were closer than 3438 Astronomical Units, Tycho should have been able to measure their trigonometric parallaxes. But he found no parallax for ...
... The accuracy of Tycho's best positional measurements was +/- 1 arc minute. This was an improvement of a factor of 10 over previous observations. If the stars were closer than 3438 Astronomical Units, Tycho should have been able to measure their trigonometric parallaxes. But he found no parallax for ...
Stars and Planets - The University of Texas at Dallas
... In the 1920’s Edwin Hubble not only showed that many “nebula” were in fact other galaxies, but that galaxies appear to be speeding away from one another. The further away a galaxy was (measured with standard candles), the faster it seemed to move away from us! velocity = Ho x distance, where Ho is a ...
... In the 1920’s Edwin Hubble not only showed that many “nebula” were in fact other galaxies, but that galaxies appear to be speeding away from one another. The further away a galaxy was (measured with standard candles), the faster it seemed to move away from us! velocity = Ho x distance, where Ho is a ...
The Copernican Revolution
... • "If you have two theories which both explain the observed facts then you should use the simplest until more evidence comes along“ • "The simplest explanation for some phenomenon is more likely to be accurate than more complicated explanations.“ • KISS (instructor’s editorial comment) ...
... • "If you have two theories which both explain the observed facts then you should use the simplest until more evidence comes along“ • "The simplest explanation for some phenomenon is more likely to be accurate than more complicated explanations.“ • KISS (instructor’s editorial comment) ...
discover the wonders above
... This month rare noctilucent clouds might be seen a couple of hours after sunset low in the northwest, or a couple of hours before sunrise low in the northeast. These ice crystal clouds are formed in the extreme cold of the mesosphere 76-85km above Earth’s surface. Higher than normal clouds, these ca ...
... This month rare noctilucent clouds might be seen a couple of hours after sunset low in the northwest, or a couple of hours before sunrise low in the northeast. These ice crystal clouds are formed in the extreme cold of the mesosphere 76-85km above Earth’s surface. Higher than normal clouds, these ca ...
The Discovery of Planets beyond the Solar System
... The diversity of discovered planets was a big surprise to Astronomers There is a planet so small, that its mass is only 0.2 times that of Jupiter. There is one so big, that is 11 times more massive than Jupiter. There is a planet going around its star in only 3 days, there is another that takes 4.5 ...
... The diversity of discovered planets was a big surprise to Astronomers There is a planet so small, that its mass is only 0.2 times that of Jupiter. There is one so big, that is 11 times more massive than Jupiter. There is a planet going around its star in only 3 days, there is another that takes 4.5 ...
ppt
... At larger distances ices (both water and ammonia) can condense due to the lower temperatures ...
... At larger distances ices (both water and ammonia) can condense due to the lower temperatures ...
1 The Solar System - e
... sky? There is evidence that man had shown an interest in knowing about them since ancient times. At present man can explore more than what is visible to the naked eye, as scientists have invented modern equipment to observe the sky. It has been discovered that there are eight planets, shapeless piec ...
... sky? There is evidence that man had shown an interest in knowing about them since ancient times. At present man can explore more than what is visible to the naked eye, as scientists have invented modern equipment to observe the sky. It has been discovered that there are eight planets, shapeless piec ...
My power point presentation on spectroscopy of stars (ppt file)
... • Sometime fitting works reasonably well, but not perfectly • In this case we can often obtain approximate values of parameters such as chemical abundances, rotation, … • The remaining discrepancies give us information about physics missing from the model • For the supergiant omicron Scorpii, the di ...
... • Sometime fitting works reasonably well, but not perfectly • In this case we can often obtain approximate values of parameters such as chemical abundances, rotation, … • The remaining discrepancies give us information about physics missing from the model • For the supergiant omicron Scorpii, the di ...
Stars 3
... mysterious “halo” which remains stationary, but grows brighter then fainter over time. Also seen are the effects of two polar jets that move out along the rotation axis of the pulsar. The most dynamic feature seen -- a small knot that “dances dances around around” so much that astronomers have been ...
... mysterious “halo” which remains stationary, but grows brighter then fainter over time. Also seen are the effects of two polar jets that move out along the rotation axis of the pulsar. The most dynamic feature seen -- a small knot that “dances dances around around” so much that astronomers have been ...
Teacher Checklist - Troup County Schools
... Describe how the Earth’s tilt on its axis as it orbits the sun causes seasonal changes to occur on Earth. Demonstrate how the earth revolves around the sun. d. Demonstrate the relative size and order from the sun of the planets in the solar system. Prior Learning: This is new learning. Identif ...
... Describe how the Earth’s tilt on its axis as it orbits the sun causes seasonal changes to occur on Earth. Demonstrate how the earth revolves around the sun. d. Demonstrate the relative size and order from the sun of the planets in the solar system. Prior Learning: This is new learning. Identif ...
Scientific American`s Ask the Experts
... ome scientists were seriously concerned about the possible high density of objects in the asteroid belt, which lies between the orbits of Mars and Jupiter, when the first robotic spacecraft were scheduled to be sent through it. The first crossing of the asteroid belt took place in the early 1970s, whe ...
... ome scientists were seriously concerned about the possible high density of objects in the asteroid belt, which lies between the orbits of Mars and Jupiter, when the first robotic spacecraft were scheduled to be sent through it. The first crossing of the asteroid belt took place in the early 1970s, whe ...
Barium Stars Observed with the Coude Echelle Spectrometer
... your integrated stellar signal is only 5 %, say, of this level, you will have to be pretty sure about how many dark counts you subtract (the dark current was said to be unusually high at that time, and I found it was not sufficiently constant to permit scaling to very different exposures). Thus, if ...
... your integrated stellar signal is only 5 %, say, of this level, you will have to be pretty sure about how many dark counts you subtract (the dark current was said to be unusually high at that time, and I found it was not sufficiently constant to permit scaling to very different exposures). Thus, if ...
Document
... • Multiple supernovae in regions of recent star formation produce bubbles of very hot gas • This hot gas can break out of the galactic disk and produce a galactic fountain • As the gas cools, it falls back to the disk, spreading heavy elements throughout the galaxy ...
... • Multiple supernovae in regions of recent star formation produce bubbles of very hot gas • This hot gas can break out of the galactic disk and produce a galactic fountain • As the gas cools, it falls back to the disk, spreading heavy elements throughout the galaxy ...
PDF only - at www.arxiv.org.
... continuously habitable zone and the system would be a very good candidate in searching for signs of extraterrestrial life. Alternatively, a planet may only remain within the HZ for part of a star’s main sequence lifetime, due to the outward migration of the HZ as the star ages. But if this period in ...
... continuously habitable zone and the system would be a very good candidate in searching for signs of extraterrestrial life. Alternatively, a planet may only remain within the HZ for part of a star’s main sequence lifetime, due to the outward migration of the HZ as the star ages. But if this period in ...
Astro 27 Solar System Formation and ExoPlanets Slide Show
... must be made mostly of the dominant chemical elements – hydrogen and helium. These would evaporate away on a time scale which is likely short compared to the age of the system. ...
... must be made mostly of the dominant chemical elements – hydrogen and helium. These would evaporate away on a time scale which is likely short compared to the age of the system. ...
Duncan Wright
... goals of modern astronomy. Detecting Earth-like planets, in Earth-like orbits around Sunlike stars is currently beyond reach of any facility except Kepler (and is problematic even then). What is possible now, is the detection of Earth-like planets in habitable-zone orbits around low-mass stars using ...
... goals of modern astronomy. Detecting Earth-like planets, in Earth-like orbits around Sunlike stars is currently beyond reach of any facility except Kepler (and is problematic even then). What is possible now, is the detection of Earth-like planets in habitable-zone orbits around low-mass stars using ...
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces. Its name is Latin for ""water-carrier"" or ""cup-carrier"", and its symbol is 20px (Unicode ♒), a representation of water.Aquarius is one of the oldest of the recognized constellations along the zodiac (the sun's apparent path). It was one of the 48 constellations listed by the 2nd century AD astronomer Ptolemy, and it remains one of the 88 modern constellations. It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Eridanus the river.