poster
... Abstract. DG Tau is a classical T Tauri star showing an unusual X-ray spectrum, best described by two thermal components with different absorption columns. The soft X-rays are less absorbed than the hard X-rays, presumably coronal, component. This rules out stellar accretion as the origin of the sof ...
... Abstract. DG Tau is a classical T Tauri star showing an unusual X-ray spectrum, best described by two thermal components with different absorption columns. The soft X-rays are less absorbed than the hard X-rays, presumably coronal, component. This rules out stellar accretion as the origin of the sof ...
Astronomy - Troop 179
... a. Identify in the sky at least 10 constellations, at least four of which are in the zodiac. b. Identify at least eight conspicuous stars, five of which are of magnitude 1 or brighter. c. Make two sketches of the Big Dipper. In one sketch, show the Big Dipper's orientation in the early evening sky. ...
... a. Identify in the sky at least 10 constellations, at least four of which are in the zodiac. b. Identify at least eight conspicuous stars, five of which are of magnitude 1 or brighter. c. Make two sketches of the Big Dipper. In one sketch, show the Big Dipper's orientation in the early evening sky. ...
THE SPECTRA OF FIVE IRREGULAR VARIABLE STARS George H
... other planetary nebula, it would seem probable that the object is not a variable. Miss Swope's estimates depend upon plates obtained with Harvard photographic refractors. It might be worth while to examine other such plates showing nearly stellar planetaries in order to see if the light-variations r ...
... other planetary nebula, it would seem probable that the object is not a variable. Miss Swope's estimates depend upon plates obtained with Harvard photographic refractors. It might be worth while to examine other such plates showing nearly stellar planetaries in order to see if the light-variations r ...
Equipment Chapter two
... Reflecting telescopes suffer no chromatic aberration. Mirrors have only one optical surface. An apochromatic lens has between four and eight. Mirrors are therefore much less expensive to produce. Telescopes over about 200 mm are all reflectors or catadioptrics (see later). Disadvantages of reflector ...
... Reflecting telescopes suffer no chromatic aberration. Mirrors have only one optical surface. An apochromatic lens has between four and eight. Mirrors are therefore much less expensive to produce. Telescopes over about 200 mm are all reflectors or catadioptrics (see later). Disadvantages of reflector ...
Stars I - Astronomy Centre
... • As with gravity, the intensity of light drops inversely with the square of distance d from a source as the light is spread out over the surface A = 4d2 of a sphere of radius d • The luminosity of a star (the total energy radiated per second) is thus given by its measured brightness multiplied by ...
... • As with gravity, the intensity of light drops inversely with the square of distance d from a source as the light is spread out over the surface A = 4d2 of a sphere of radius d • The luminosity of a star (the total energy radiated per second) is thus given by its measured brightness multiplied by ...
Assignment 1
... outstretched hand. How many total naked eye stars are visible on the entire sky? HINT: The statement about your hand is a way of measuring angular size on the sky. ...
... outstretched hand. How many total naked eye stars are visible on the entire sky? HINT: The statement about your hand is a way of measuring angular size on the sky. ...
Solar evolution and the distant future of Earth
... appear to be too warm by about 10%, which on its own would result in 20% smaller radii. We then revisited mass-loss studies from well-observed K supergiants. In fact, modern work (Baade 1998) finds values about 5 times lower (corresponding to η ≈ 0.2) than the original work of Reimers, three decades ...
... appear to be too warm by about 10%, which on its own would result in 20% smaller radii. We then revisited mass-loss studies from well-observed K supergiants. In fact, modern work (Baade 1998) finds values about 5 times lower (corresponding to η ≈ 0.2) than the original work of Reimers, three decades ...
planet
... • Simpler definition - A “large” object that orbits a star and shines primarily by reflecting light from its star. ...
... • Simpler definition - A “large” object that orbits a star and shines primarily by reflecting light from its star. ...
The World-Wide Telescope, an Archetype for Online
... that give exact answers, these algorithms will likely be heuristic and give approximate answers [Connolly, Szapudi]. Astronomy as an Archetype for Online Science Astronomy exemplifies these phenomena. For thousands of years astronomy was primary empirical with few theoretical models. Theoretical ast ...
... that give exact answers, these algorithms will likely be heuristic and give approximate answers [Connolly, Szapudi]. Astronomy as an Archetype for Online Science Astronomy exemplifies these phenomena. For thousands of years astronomy was primary empirical with few theoretical models. Theoretical ast ...
The Stars Tonight
... The Explore the Universe Gallery is devoted to Astronomy, including galactic distance determination, collisions, and dark matter. Of particular interest are the tools used centuries ago to measure the position of objects in the sky, how the distance to the galaxies is calculated, and dark matter, bu ...
... The Explore the Universe Gallery is devoted to Astronomy, including galactic distance determination, collisions, and dark matter. Of particular interest are the tools used centuries ago to measure the position of objects in the sky, how the distance to the galaxies is calculated, and dark matter, bu ...
Homework #7 (Ch. 19)
... eventually form a star. Therefore a cluster of stars will be formed rather than just single stars. The number of fragments depends on the mass of the original clouds, and to some degree on random chance. 5. Chaisson Review and Discussion 19.8 In what ways do the formative stages of high-mass stars d ...
... eventually form a star. Therefore a cluster of stars will be formed rather than just single stars. The number of fragments depends on the mass of the original clouds, and to some degree on random chance. 5. Chaisson Review and Discussion 19.8 In what ways do the formative stages of high-mass stars d ...
Stellar Evolution
... Fast wind from hot, inner layers of the star overtakes the slow wind and excites it => Planetary Nebula ...
... Fast wind from hot, inner layers of the star overtakes the slow wind and excites it => Planetary Nebula ...
Earth Science 24.1 The Sun: Study of Light
... light is a basic tool to any modern astronomer. The main source of light in our solar system is our sun. This lesson will focus on the sun and the nature of light that comes from the sun; it’s form and function within our solar system. ...
... light is a basic tool to any modern astronomer. The main source of light in our solar system is our sun. This lesson will focus on the sun and the nature of light that comes from the sun; it’s form and function within our solar system. ...
Ch24-1 Powerpoint
... light is a basic tool to any modern astronomer. The main source of light in our solar system is our sun. This lesson will focus on the sun and the nature of light that comes from the sun; it’s form and function within our solar system. ...
... light is a basic tool to any modern astronomer. The main source of light in our solar system is our sun. This lesson will focus on the sun and the nature of light that comes from the sun; it’s form and function within our solar system. ...
Stars: Properties and Classification
... The `dark lines are created when the atoms in the photosphere have energy levels that match the photons that are emitted from the star. 1. They `reveal the composition of the star. 2. The strength of the lines (how `dark they are) depend on the stars surface temperature. ...
... The `dark lines are created when the atoms in the photosphere have energy levels that match the photons that are emitted from the star. 1. They `reveal the composition of the star. 2. The strength of the lines (how `dark they are) depend on the stars surface temperature. ...
PDF sample - Hawaii Military Wives
... life (as virtually everyone does today, also in Germany) as though there were an accent, but he apparently never wrote it that way! Apart from the valuable help from outside sources, acknowledged above or in the text, I also owe a great debt of gratitude to a number of ESO colleagues: Uta Grothkopf ...
... life (as virtually everyone does today, also in Germany) as though there were an accent, but he apparently never wrote it that way! Apart from the valuable help from outside sources, acknowledged above or in the text, I also owe a great debt of gratitude to a number of ESO colleagues: Uta Grothkopf ...
The Milky Way Galaxy
... Inner 500pc of Galaxy Extinction makes optical studies impossible - use radio or IR Observe ionized gas, line emission, dust, star clusters Stellar density is 107 stars per pc3 (compared to 0.1 in the solar neighborhood) If the Sun were near the GC Nearest star would be 1000AU away A m ...
... Inner 500pc of Galaxy Extinction makes optical studies impossible - use radio or IR Observe ionized gas, line emission, dust, star clusters Stellar density is 107 stars per pc3 (compared to 0.1 in the solar neighborhood) If the Sun were near the GC Nearest star would be 1000AU away A m ...
Stellar Evolution (Formation)
... Radiate away stored heat. Slowly approach 0 K. If M > 1.4Msun, gravity will exceed the pressure of the degenerate electrons and the white dwarf will collapse. ...
... Radiate away stored heat. Slowly approach 0 K. If M > 1.4Msun, gravity will exceed the pressure of the degenerate electrons and the white dwarf will collapse. ...
MilkyWay
... Inner 500pc of Galaxy Extinction makes optical studies impossible - use radio or IR Observe ionized gas, line emission, dust, star clusters Stellar density is 107 stars per pc3 (compared to 0.1 in the solar neighborhood) If the Sun were near the GC Nearest star would be 1000AU away A m ...
... Inner 500pc of Galaxy Extinction makes optical studies impossible - use radio or IR Observe ionized gas, line emission, dust, star clusters Stellar density is 107 stars per pc3 (compared to 0.1 in the solar neighborhood) If the Sun were near the GC Nearest star would be 1000AU away A m ...
Earth Science Quarter 1 Credit Recovery
... mass of the objects involved. Because the Sun has such a great mass, it can hold all the planets in their orbits (also why the Earth, much more massive than its moon, can hold the moon in its orbit). ...
... mass of the objects involved. Because the Sun has such a great mass, it can hold all the planets in their orbits (also why the Earth, much more massive than its moon, can hold the moon in its orbit). ...
Introduction to the HR Diagram
... elements, called periods, are chemically similar, and share a common set of characteristics. The elements are also arranged into blocks that share commonalities. The arrangement of the elements in the periodic table also shows the periodicity and trends of some properties, such as electron configura ...
... elements, called periods, are chemically similar, and share a common set of characteristics. The elements are also arranged into blocks that share commonalities. The arrangement of the elements in the periodic table also shows the periodicity and trends of some properties, such as electron configura ...
FOTO Imaging - Cincinnati Observatory
... Can’t sleep? Looking for a unique Friday night out? Come see what the Observatory is like after hours long after the “early crowd” has gone home. You'll get to use the oldest big telescope in the U.S. to view astronomical objects that are not visible until late at night (weather permitting). Get a s ...
... Can’t sleep? Looking for a unique Friday night out? Come see what the Observatory is like after hours long after the “early crowd” has gone home. You'll get to use the oldest big telescope in the U.S. to view astronomical objects that are not visible until late at night (weather permitting). Get a s ...
The Space-Based Visible Sensor - The Johns Hopkins University
... The CCD camera comprises the analog signal processor and a focal plane electronics card located in the telescope near the focal plane. The camera functions were split to place the low-noise electronics near the focal plane for better performance, while removing the higher power processing electronic ...
... The CCD camera comprises the analog signal processor and a focal plane electronics card located in the telescope near the focal plane. The camera functions were split to place the low-noise electronics near the focal plane for better performance, while removing the higher power processing electronic ...
6th Grade Great Barrier Reef
... It takes a day for Earth to make one complete spin around it axis. When the place where you live is turned toward the Sun, it is day for you, while it is night for people on the opposite side of Earth. ...
... It takes a day for Earth to make one complete spin around it axis. When the place where you live is turned toward the Sun, it is day for you, while it is night for people on the opposite side of Earth. ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.