AST 207 Test 2 Answers 20 October 2010
... star A. Prof. Adams says he discovered a new type of star that is fainter than white dwarfs. Has he discovered a new type of star? Explain. The clues are very much like Walter Adams’ discovery that Sirius B is a white dwarf. However, there is a crucial missing clue. Since Sirius A and B were known t ...
... star A. Prof. Adams says he discovered a new type of star that is fainter than white dwarfs. Has he discovered a new type of star? Explain. The clues are very much like Walter Adams’ discovery that Sirius B is a white dwarf. However, there is a crucial missing clue. Since Sirius A and B were known t ...
Astronomical Unit (AU)
... over from the initial moments of Big Bang spread evenly around the universe. • Red Shifted galaxies indicating that they are moving away from our galaxy. • Galaxies and stars formed from cooling ...
... over from the initial moments of Big Bang spread evenly around the universe. • Red Shifted galaxies indicating that they are moving away from our galaxy. • Galaxies and stars formed from cooling ...
galaxy_physics
... Galaxy basics : scales, components, dynamics Galaxy interactions & star formation Nuclear black holes & activity (Formation of galaxies, clusters, & LSS) ...
... Galaxy basics : scales, components, dynamics Galaxy interactions & star formation Nuclear black holes & activity (Formation of galaxies, clusters, & LSS) ...
THE LIBERAL ARTS AND SCIENCES The liberal arts and sciences
... hunter is a bright constellation or group of stars - seen in the winter. Orion was named by the ancient Greeks after a giant mythical hunter who pursed another group of stars nearby known as the Pleiades or Seven Sisters. It was known by other names by older civilisations – the Babylonians knew it a ...
... hunter is a bright constellation or group of stars - seen in the winter. Orion was named by the ancient Greeks after a giant mythical hunter who pursed another group of stars nearby known as the Pleiades or Seven Sisters. It was known by other names by older civilisations – the Babylonians knew it a ...
Stars Chapter 21
... light from a distant star into its characteristic color • SPECTRUM: the band of colors that forms as light passes through a prism • Used to see if galaxies are moving away or toward the earth ...
... light from a distant star into its characteristic color • SPECTRUM: the band of colors that forms as light passes through a prism • Used to see if galaxies are moving away or toward the earth ...
The Milky Way Galaxy
... • The Milky Way galaxy is home to 400 billion stars and our own Sun and Solar System. • It is a barred spiral galaxy. • Scientists think the centre of the galaxy contains a super massive black hole. • The Milky Way is full of dust, gas and stars. • The Milky Way, along with everything else, is ...
... • The Milky Way galaxy is home to 400 billion stars and our own Sun and Solar System. • It is a barred spiral galaxy. • Scientists think the centre of the galaxy contains a super massive black hole. • The Milky Way is full of dust, gas and stars. • The Milky Way, along with everything else, is ...
Astronomy 114 Problem Set # 7 Due: 30 Apr 2007 SOLUTIONS 1
... a fraction of an arc second at best. Especially for ground-based telescopes, the main goal is collecting photons! 2 How big would a radio telescope observing at 20 cm wavelength have to be in order to resolve the same angle as the Keck telescope in the last problem? Since 20 cm is in radio wavelengt ...
... a fraction of an arc second at best. Especially for ground-based telescopes, the main goal is collecting photons! 2 How big would a radio telescope observing at 20 cm wavelength have to be in order to resolve the same angle as the Keck telescope in the last problem? Since 20 cm is in radio wavelengt ...
Astronomy
... **On an equatorial constellation chart (the big rectangular one): be able to identify declination, right ascension, the ecliptic, and the celestial equator be able to locate a star/constellation using RA and Dec coordinates be able to predict which constellation will be visible at a given loca ...
... **On an equatorial constellation chart (the big rectangular one): be able to identify declination, right ascension, the ecliptic, and the celestial equator be able to locate a star/constellation using RA and Dec coordinates be able to predict which constellation will be visible at a given loca ...
Final Exam Earth science
... Main sequence stars. Hertzsprung-Russell diagram, a graph used by astronomers. It shows a relationship between surface temperature and brightness. Most stars (90%) form a diagonal band called the main sequence stars. In the main sequence, surface temperature increases as brightness increases. Our su ...
... Main sequence stars. Hertzsprung-Russell diagram, a graph used by astronomers. It shows a relationship between surface temperature and brightness. Most stars (90%) form a diagonal band called the main sequence stars. In the main sequence, surface temperature increases as brightness increases. Our su ...
PRE-LAB
... Fig 2: The image to the left which is taken from http://www.absoluteaxarquia.com/nightsky/cons tellations.html. That constellation chart shows a constellation map that also includes other constellations. The constellations lines are drawn in for easier recognition. The Big Dipper and Cassiopeia are ...
... Fig 2: The image to the left which is taken from http://www.absoluteaxarquia.com/nightsky/cons tellations.html. That constellation chart shows a constellation map that also includes other constellations. The constellations lines are drawn in for easier recognition. The Big Dipper and Cassiopeia are ...
here - Boise State University
... Click on the “Research Process” page and answer the questions below: 6. What is a star and what two gases make up a star? 7. As you watched the Youtube clip, what kinds of colors did the various stars have? 8. As you watched the Youtube clip, how big was our sun compared to the other stars? 9. Expla ...
... Click on the “Research Process” page and answer the questions below: 6. What is a star and what two gases make up a star? 7. As you watched the Youtube clip, what kinds of colors did the various stars have? 8. As you watched the Youtube clip, how big was our sun compared to the other stars? 9. Expla ...
Brighter than the average star?
... System is. The famous ‘Hitchhiker’s Guide to the Galaxy’ begins by describing our own star with the words “Far out in the uncharted backwaters of the unfashionable end of the Western Spiral arm of the galaxy lies a small unregarded yellow sun.” There is a slight inaccuracy in that sentence. Rather t ...
... System is. The famous ‘Hitchhiker’s Guide to the Galaxy’ begins by describing our own star with the words “Far out in the uncharted backwaters of the unfashionable end of the Western Spiral arm of the galaxy lies a small unregarded yellow sun.” There is a slight inaccuracy in that sentence. Rather t ...
astrocoursespring2012lec1-1-5
... 2. Our latitude on earth: This sets our horizon, and what is above or below it when we look up at night. Objects below the horizon cannot be viewed. Certain celestial objects remain permanently below our horizon. ...
... 2. Our latitude on earth: This sets our horizon, and what is above or below it when we look up at night. Objects below the horizon cannot be viewed. Certain celestial objects remain permanently below our horizon. ...
Classifying Stars
... Rigel has an absolute magnitude greater than that of Sirius (it puts off more light), but it looks dimmer from Earth because it is 100 times farther away. ...
... Rigel has an absolute magnitude greater than that of Sirius (it puts off more light), but it looks dimmer from Earth because it is 100 times farther away. ...
constellations
... (clock), Norma (set-square), etc. There are 88 modern constellations, as recognised by the International Astronomical Union. (Other cultures had their own distinct constellations, e.g. Chinese, Indian, Polynesian, Viking, etc.) ...
... (clock), Norma (set-square), etc. There are 88 modern constellations, as recognised by the International Astronomical Union. (Other cultures had their own distinct constellations, e.g. Chinese, Indian, Polynesian, Viking, etc.) ...
Summary of week 1:
... Galaxies (The Milky Way) A large (typically 5000-200,000 ly) gravitationally-bound system of hundreds of millions (or up to a trillion) of stars. The Milky Way is about 100,000 light years across and has over 100 billion stars. Clusters of Galaxies (The Local Group) Superclusters of galaxies (The Vi ...
... Galaxies (The Milky Way) A large (typically 5000-200,000 ly) gravitationally-bound system of hundreds of millions (or up to a trillion) of stars. The Milky Way is about 100,000 light years across and has over 100 billion stars. Clusters of Galaxies (The Local Group) Superclusters of galaxies (The Vi ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.