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Stars Study Guide KEY
Stars Study Guide KEY

... Originally, the universe was tiny, hot, and dense. (Everything was compressed together into a small ball.) Then, an enormous explosion threw matter in all directions. (The matter eventually formed everything that we now see.) 18. What evidence is used to support the theory? (Tell two) Galaxies are s ...
Astronomy 200 Problem Set No
Astronomy 200 Problem Set No

... object. If you do not get a good match between your object and a main sequence star, you may need to load one of the other reference sets that include giants and supergiants. Items to turn in for Part 1 1. List of stars measured including their names, positions, magnitudes, and signal/noise ratios i ...
TRAPPIST: TRAnsiting Planets and PlanetesImals Small Telescope
TRAPPIST: TRAnsiting Planets and PlanetesImals Small Telescope

... exquisite global precision, as shown in Figure 3. Transit search around ultra-cool dwarf stars (UCDs) We have selected a sample of ten rela­ tively bright late-M stars and brown dwarfs. For each of them, we have started an intense monitoring campaign (several full nights) to search for the transits ...
paper
paper

... exquisite global precision, as shown in Figure 3. Transit search around ultra-cool dwarf stars (UCDs) We have selected a sample of ten rela­ tively bright late-M stars and brown dwarfs. For each of them, we have started an intense monitoring campaign (several full nights) to search for the transits ...
Tour the sky`s reddest stars
Tour the sky`s reddest stars

... of stars by their spectral types, was so impressed with Y CVn that he called it “La Superba.” Scientists study a star’s spectrum by measuring the intensity of its light at different wavelengths. The standard spectral classes assign letters to stars based on their temperatures. From hottest to cooles ...
Statistical challenges in modern astronomy
Statistical challenges in modern astronomy

... statisticians, or have no known solution. Many statistical procedures are based on mathematical proofs which determine the applicability of established results; it is easy to ignore these limits and emerge with unreliable results. It is perilous to violate mathematical truths! It can be difficult to ...
talk / PPT / 1.6 MB
talk / PPT / 1.6 MB

... Now, for the stellar component, we have a mass surface density of 36 M/pc2 ... and ... a local mass density of 0.042 M/pc3 ... ...
Title of PAPER - Department of Physics and Astronomy
Title of PAPER - Department of Physics and Astronomy

... investigation; Mercury and Earth at their current orbits and Jupiter at Mercury’s orbital radius. Mercury and the hot Jupiter were assumed to have a rotation period similar to the Earth. Each of these have a known albedo, orbital radius, planetary radius, and mass1 2 3. From this information it is p ...
1 Introduction - High Point University
1 Introduction - High Point University

... objects caused by a change in the observer’s position. In other words, parallax is a perspective effect of geometry. It is the observed location of one object with respect to another—nothing more. Parallax is measured using the parsec. The name parsec comes from “a distance corresponding to a parall ...
HW6 due - Yale Astronomy
HW6 due - Yale Astronomy

... already  escaped  from  earth  and  the  solar  system.   ...
Astronomy - Fort Thomas Independent Schools
Astronomy - Fort Thomas Independent Schools

... What is the difference between kilometers, AU, light-years and parsecs? Which measure or measures is/are best for describing distances to stars and why? The difference is in the astronomical distance to be measured. Kilometers can be used for orbiting satellites and even the distance to the Moon. As ...
A glance at the beginning of the Universe
A glance at the beginning of the Universe

... Taking a closer view of the particular galaxies in our research for quite a small part of them the values got for the age of the Universe coincide with the generally acknowledged. That refers to the observed galaxy NGC 4258. / For NGC 4725, the number we got for the age of the Universe is 14 billion ...
Space - SSHS Science 9
Space - SSHS Science 9

... • A comet is a chunk of frozen matter that travels in a very long orbit around the Sun. ...
Stellar Evolution: Evolution: Birth, Life, and Death of Stars
Stellar Evolution: Evolution: Birth, Life, and Death of Stars

... the ordinate "absolute magnitude" is a logarithmic measure of power.  Most of the stars lie on the “main sequence”: massive stars are hot and have high power (top left), while the small stars have lower masses, are cold and have low power (bottom right)  The giant stars lie on the topright part of ...
Student Text, pp. 139-144
Student Text, pp. 139-144

... solar system because they were visible to the naked eye. Combined with the inner planets (Mercury, Venus, Earth, and Mars), the solar system was believed to consist of the Sun and six planets, as well as other smaller bodies such as moons. Then in 1781, British astronomer William Herschel (1738–1822 ...
Astronomy 21 – Test 2 – Answers
Astronomy 21 – Test 2 – Answers

... 10. How would you determine the spiral structure of the Milky Way? Also – what is 21-cm emission (explain the astrophysical mechanism)? You have to look through dust so you have to use longer wavelength observations. The 21cm line is useful for that (it is radiation emitted during the spin flip of t ...
lec06_07oct2011
lec06_07oct2011

... Something like ten systems so far, +’s/-’s ? Advantages of the microlensing technique to detect exoplanets include: * More sensitive than most other techniques to small-mass planets (like Earth) * Most sensitive to planets in our Galaxy that have orbit sizes of a few astronomical units (like those ...
Astronomy Club
Astronomy Club

... Our earth and other planets revolve around the sun in fixed parallel orbits, except Mercury and Pluto. These orbits have an angle of 7 &17 degrees with respect to the earth's orbit respectively. But comets emerging out of the ‘Ourt Cloud’ have disordered orbit. Comets are mainly of two types. Those ...
this article
this article

... that the object under study is a detached eclipsing binary, specifically an EA β Persei-type (Algol) eclipsing system, with an orbital period of 2.0664 days. Neither the type nor period of this eclipsing binary had been characterized up to this point. This object has been given the AAVSO designation ...
Group project 1
Group project 1

... Misconception #5: Stars must be round because that is how they look when viewed through a telescope. Misconception #6: A star undergoes a nova only once in its lifetime, and a supernova is simply a large nova. Misconception #7: There is no need for more telescopes on the ground since space-based tel ...
Studying Space Section 1 Section 1
Studying Space Section 1 Section 1

... • The path that a body follows as it travels around another body is called an orbit. • Earth’s orbit around the sun is an ellipse, a closed curve whose shape is determined by two points, or foci, within the ellipse. • In planetary orbits, one focus is located within the sun. No object is located at ...
beginning of the quarter
beginning of the quarter

... Misconception #5: Stars must be round because that is how they look when viewed through a telescope. Misconception #6: A star undergoes a nova only once in its lifetime, and a supernova is simply a large nova. Misconception #7: There is no need for more telescopes on the ground since space-based tel ...
Star - Uplift Education
Star - Uplift Education

... • If two stars have the same absolute magnitude but different apparent magnitude they would have the same brightness if they were both at distance of 10 pc from Earth, so we conclude they have the same luminosity, but are at different distances from Earth !!!!!!!!!!!!!! • Every one step in absolute ...
Version presented at conference - DCC
Version presented at conference - DCC

... and numerical models predict nova-like transients from double neutron star and black hole/neutron star mergers [2]. GRB afterglows and supernovas are both well-studied phenomenon associated with gravitational radiation [3,4]. While GW and EM signals are expected to travel at the same speed, a common ...
Masers and high mass star formation Claire Chandler
Masers and high mass star formation Claire Chandler

... research • Let´s look at some possible examples. ...
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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.
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