Lesson 0: What is progress
... telescope for observing the heavens. Brahe was by all accounts an extremely colorful character. He allegedly challenged a fellow student to a duel with swords in a dispute over who was the better mathematician. Brahe's nose was partially cut off, and he was said to wear a gold and silver replacement ...
... telescope for observing the heavens. Brahe was by all accounts an extremely colorful character. He allegedly challenged a fellow student to a duel with swords in a dispute over who was the better mathematician. Brahe's nose was partially cut off, and he was said to wear a gold and silver replacement ...
Microlensing Studies in Crowded Fields
... spread functions so take much longer to survey a given number of targets. • Adaptive optics can give excellent resolution but only over a tiny field of view (a few arcseconds in the visible). • The only method that can routinely give Hubble resolution from the ground is Lucky Imaging. ...
... spread functions so take much longer to survey a given number of targets. • Adaptive optics can give excellent resolution but only over a tiny field of view (a few arcseconds in the visible). • The only method that can routinely give Hubble resolution from the ground is Lucky Imaging. ...
Nature of Stars 2
... Kepler 3rd Law gives us a relationship between the average distance of a planet from the Sun and the amount of time it takes a planet to orbit the Sun once. For objects orbiting the Sun, P2 = a3 (P in years, a in AUs). Kepler’s relation does not work for objects that are not orbiting the Sun, for ex ...
... Kepler 3rd Law gives us a relationship between the average distance of a planet from the Sun and the amount of time it takes a planet to orbit the Sun once. For objects orbiting the Sun, P2 = a3 (P in years, a in AUs). Kepler’s relation does not work for objects that are not orbiting the Sun, for ex ...
GRAVITY FIELD IN EXTERNAL PARTS OF THE SOLAR SYSTEM
... located about 8000 pc from the galactic center (Binney & Merrifield, 1998). The size of the solar space is much smaller than the size of the galaxy. For this reason, gravitational perturbations from the Galaxy in the first approximation can be regarded as a perturbation a centre of the galaxy. Its dia ...
... located about 8000 pc from the galactic center (Binney & Merrifield, 1998). The size of the solar space is much smaller than the size of the galaxy. For this reason, gravitational perturbations from the Galaxy in the first approximation can be regarded as a perturbation a centre of the galaxy. Its dia ...
Study Guide Chapter 7
... b. It has a transverse velocity that is away from us. c. It has a transverse velocity that is toward us. d. It has a radial velocity that is away from us. e. It has a radial velocity that is toward us. 9. Which layer of the Sun's atmosphere contains the cooler low-density gas responsible for absorpt ...
... b. It has a transverse velocity that is away from us. c. It has a transverse velocity that is toward us. d. It has a radial velocity that is away from us. e. It has a radial velocity that is toward us. 9. Which layer of the Sun's atmosphere contains the cooler low-density gas responsible for absorpt ...
Standard EPS Shell Presentation
... Discuss the importance of the H-R diagram to astronomers. Explain the relationship between mass and the life cycle of a star. Describe the phases in the life cycle of a sun-like star. Discuss how the death of a massive star is responsible for the creation of elements heavier than helium on the perio ...
... Discuss the importance of the H-R diagram to astronomers. Explain the relationship between mass and the life cycle of a star. Describe the phases in the life cycle of a sun-like star. Discuss how the death of a massive star is responsible for the creation of elements heavier than helium on the perio ...
Professor Emeritus, University of Canterbury Yevgeny Lifshitz
... positions of several stars are indicated with bars. When compared to other photographs taken of the same region of the sky, it became apparent that those closest to the rim of the Sun appeared to have shifted slightly. ...
... positions of several stars are indicated with bars. When compared to other photographs taken of the same region of the sky, it became apparent that those closest to the rim of the Sun appeared to have shifted slightly. ...
Scientists` Contributions to Our Understanding of
... http://www.aip.org/history/esva/catalog/esva/Copernicus_Nicolaus.html ...
... http://www.aip.org/history/esva/catalog/esva/Copernicus_Nicolaus.html ...
Measuring Motion, Doppler Effect—28 Oct Outline • Announcements
... You are driving 80mph. Just over the crest of a hill, you see a cop car in the distance. In an instant, the cop’s computer writes you a ticket. • Astronomers can measure the speed of a star in orbit around the Milky Way without seeing it move very far. ...
... You are driving 80mph. Just over the crest of a hill, you see a cop car in the distance. In an instant, the cop’s computer writes you a ticket. • Astronomers can measure the speed of a star in orbit around the Milky Way without seeing it move very far. ...
Section 5 — Earth Sciences (The Solar System) Student Edition
... Earth is the center of the universe. Earth at the center of everything makes sense, based on what those ancient people saw. More observations through time, and further questions that were investigated (and continue to be investigated) showed that Earth is not the center of the universe after all. In ...
... Earth is the center of the universe. Earth at the center of everything makes sense, based on what those ancient people saw. More observations through time, and further questions that were investigated (and continue to be investigated) showed that Earth is not the center of the universe after all. In ...
Redshift
... that are emitted by a star and can tell exactly what the star is made of even though it may be thousands of light years away. ...
... that are emitted by a star and can tell exactly what the star is made of even though it may be thousands of light years away. ...
K-3 Planetarium Lesson: Our Skies
... light out because it is spring/summer/fall, SPEED UP TIME (600x) and watch the sun set. STOP TIME once it is dark. If desired, make it "artificially dark" by turning off the daylight (TURN OFF DAYLIGHT). Ask the students if the stars look like the sun. Remind them again that the sun is a star. Stars ...
... light out because it is spring/summer/fall, SPEED UP TIME (600x) and watch the sun set. STOP TIME once it is dark. If desired, make it "artificially dark" by turning off the daylight (TURN OFF DAYLIGHT). Ask the students if the stars look like the sun. Remind them again that the sun is a star. Stars ...
Lecture10
... not too hot and not too cold, many hydrogen atoms have their electron in the n = 2 orbit: hence strong absorption ...
... not too hot and not too cold, many hydrogen atoms have their electron in the n = 2 orbit: hence strong absorption ...
File
... Bright and heavy stars which are more than 10 times heavier than the Sun emit strong ultraviolet (UV) rays. The UV rays not only burn our skin but also warm and destroy the gas around stars. The warmed gas around the stars (especially hydrogen) emits visible light. This is "nebula". We can see red l ...
... Bright and heavy stars which are more than 10 times heavier than the Sun emit strong ultraviolet (UV) rays. The UV rays not only burn our skin but also warm and destroy the gas around stars. The warmed gas around the stars (especially hydrogen) emits visible light. This is "nebula". We can see red l ...
Star Classification
... Hertzsprung - Russell Diagram The Hertzsprung -Russell (H-R) Diagram is a graph that plots stars color (spectral type or surface temperature) vs. its luminosity (intrinsic brightness or absolute magnitude). On it, astronomers plot stars' color, temperature, luminosity, spectral type, and evolutionar ...
... Hertzsprung - Russell Diagram The Hertzsprung -Russell (H-R) Diagram is a graph that plots stars color (spectral type or surface temperature) vs. its luminosity (intrinsic brightness or absolute magnitude). On it, astronomers plot stars' color, temperature, luminosity, spectral type, and evolutionar ...
A summary of the conference
... knowledge of that which is being hidden behind substantial barriers? What appliance can pierce through the outer layers of a star and test the conditions within?” Sir Arthur Eddington in “The internal constitution of stars” ...
... knowledge of that which is being hidden behind substantial barriers? What appliance can pierce through the outer layers of a star and test the conditions within?” Sir Arthur Eddington in “The internal constitution of stars” ...
Understanding Stars
... Stefan-Boltzman Law A dense hot object emits light of all colors – More of one color than others • “peak” color – The peak color is determined by the temperature • Hotter = bluer! – demo Stellar Spectroscopy Astronomers can tell what elements are in a star by the lines in its spectrum Peak color det ...
... Stefan-Boltzman Law A dense hot object emits light of all colors – More of one color than others • “peak” color – The peak color is determined by the temperature • Hotter = bluer! – demo Stellar Spectroscopy Astronomers can tell what elements are in a star by the lines in its spectrum Peak color det ...
Standard EPS Shell Presentation
... Discuss the importance of the H-R diagram to astronomers. Explain the relationship between mass and the life cycle of a star. Describe the phases in the life cycle of a sun-like star. Discuss how the death of a massive star is responsible for the creation of elements heavier than helium on the perio ...
... Discuss the importance of the H-R diagram to astronomers. Explain the relationship between mass and the life cycle of a star. Describe the phases in the life cycle of a sun-like star. Discuss how the death of a massive star is responsible for the creation of elements heavier than helium on the perio ...
planets orbit around Sun.
... about its axis, we should fly off into space. Since we don't, the earth must be stationary. • It would be almost 1900 years before Galileo introduced the concepts of gravity and inertia that explain why these effects are not observed even though the earth does move. ...
... about its axis, we should fly off into space. Since we don't, the earth must be stationary. • It would be almost 1900 years before Galileo introduced the concepts of gravity and inertia that explain why these effects are not observed even though the earth does move. ...
Stellar Classification and Evolution What is a star? A cloud of gas
... The ____________ left over after Supernovae can become Neutron Stars-- very small, _______________ balls of NEUTRONS 1 teaspoon of this would be approximately 1 billion tons on Earth Due to the great _________________ it rotates very rapidly, and some become ...
... The ____________ left over after Supernovae can become Neutron Stars-- very small, _______________ balls of NEUTRONS 1 teaspoon of this would be approximately 1 billion tons on Earth Due to the great _________________ it rotates very rapidly, and some become ...
ShaneAO viewgraphs - Laboratory for Adaptive Optics
... 4. Provide a laboratory where students and postdocs will be trained in adaptive optics design, modeling, and implementation ...
... 4. Provide a laboratory where students and postdocs will be trained in adaptive optics design, modeling, and implementation ...
Your Place in Space and Time
... measure the size of the observable universe and to discover how our lives are related to the stars. ...
... measure the size of the observable universe and to discover how our lives are related to the stars. ...
HD 140283: A Star in the Solar Neighborhood that Formed Shortly
... We made FGS observations of HD 140283 at 11 epochs between 2003 August and 2011 March, at dates close to the biannual times of maximum parallax factor. The FGS are interferometers that, in addition to providing guiding control during imaging or spectroscopic observations, can measure precise positio ...
... We made FGS observations of HD 140283 at 11 epochs between 2003 August and 2011 March, at dates close to the biannual times of maximum parallax factor. The FGS are interferometers that, in addition to providing guiding control during imaging or spectroscopic observations, can measure precise positio ...
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.