astronomy - T
... They move from East to West and also from near to the horizon to higher up in the sky ...
... They move from East to West and also from near to the horizon to higher up in the sky ...
Birth of Stars
... 5: Stars are a part of the universe, mankind needs them. Stars like Supernovas, (Supernova: A rare explosion of most of the material in a star, causing an extremely bright, short-lived object that emits large amounts of energy) are needed because the oxygen you breathe, carbon in your bones, and hyd ...
... 5: Stars are a part of the universe, mankind needs them. Stars like Supernovas, (Supernova: A rare explosion of most of the material in a star, causing an extremely bright, short-lived object that emits large amounts of energy) are needed because the oxygen you breathe, carbon in your bones, and hyd ...
Powerpoint for today
... Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are forming too, but make few UV photons. Why "H II Region? H I: Hydrogen atom H II: Ionized Hydrogen ...
... Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are forming too, but make few UV photons. Why "H II Region? H I: Hydrogen atom H II: Ionized Hydrogen ...
powerpoints - Georgia Southern University Astrophysics
... • The elements and their relative abundances are different for Type Ia and Type II remnants because the progenitors are different. Type Ia remnants from white dwarfs - usually show relatively strong Si, S, Ar, Ca, and Fe, and weak O, Ne, and Mg lines; Type II remnants - from massive stars generally ...
... • The elements and their relative abundances are different for Type Ia and Type II remnants because the progenitors are different. Type Ia remnants from white dwarfs - usually show relatively strong Si, S, Ar, Ca, and Fe, and weak O, Ne, and Mg lines; Type II remnants - from massive stars generally ...
Sample final exam
... stars tend to be in classes O, B and A (not all of them are, fortunately). Population II stars tend to be old red giants. First, given these two populations, what differences in color would a galaxy have? Recall that the text (page 160) states that there is “some evidence” that spiral galaxies evolv ...
... stars tend to be in classes O, B and A (not all of them are, fortunately). Population II stars tend to be old red giants. First, given these two populations, what differences in color would a galaxy have? Recall that the text (page 160) states that there is “some evidence” that spiral galaxies evolv ...
Star Jeopardy Review #2
... At 8 solar masses a star will go through a violent ending, forming a Type II supernova and ending in a nuetron star or balck hole ...
... At 8 solar masses a star will go through a violent ending, forming a Type II supernova and ending in a nuetron star or balck hole ...
Exam # 2 – Tue 11/08/2011
... wavelengths in the rest frame) are observed to be at visible wavelengths, or about twice the wavelength at rest. Thus the observed energy per photon is: A. four times the energy of the emitted photon B. twice the energy of the emitted photon C. the same energy as the emitted photon D. half the energ ...
... wavelengths in the rest frame) are observed to be at visible wavelengths, or about twice the wavelength at rest. Thus the observed energy per photon is: A. four times the energy of the emitted photon B. twice the energy of the emitted photon C. the same energy as the emitted photon D. half the energ ...
Chapter 1 The Copernican Revolution
... The dimensions of the Solar System Kepler’s Laws tell us the shape of the each planet’s orbital motion, the period and relative distance to the Sun (In AU ) but it doesn’t tell us about the actual size of the orbit (in kilometers). How many kilometers is one AU? How we can determine that? The moder ...
... The dimensions of the Solar System Kepler’s Laws tell us the shape of the each planet’s orbital motion, the period and relative distance to the Sun (In AU ) but it doesn’t tell us about the actual size of the orbit (in kilometers). How many kilometers is one AU? How we can determine that? The moder ...
ASTR 1B - Texas Tech University Departments
... True/False. Indicate whether each statement is True or False. 7. When most stars leave the main sequence, as they get older, they become white dwarf stars. 8. The type of death a star undergoes is determined primarily by its mass when it was born. ...
... True/False. Indicate whether each statement is True or False. 7. When most stars leave the main sequence, as they get older, they become white dwarf stars. 8. The type of death a star undergoes is determined primarily by its mass when it was born. ...
Boy Scout Astronomy Merit Badge Workbook
... a. List the names of the five most visible planets. Explain which ones can appear in phases similar to lunar phases and which ones cannot, and explain why. b. Find out when each of the five most visible planets that you identified in requirement 5a will be observable in the evening sky during the ne ...
... a. List the names of the five most visible planets. Explain which ones can appear in phases similar to lunar phases and which ones cannot, and explain why. b. Find out when each of the five most visible planets that you identified in requirement 5a will be observable in the evening sky during the ne ...
Reach_for_the_stars_final_questions.doc
... 6. Antares emits a large portion of its energy in what non-visible wavelength? (1 pt) _____________________________________________________________________________________________________ 7. White dwarfs can go supernova when they approach a certain mass. What is the name of this “critical mass”? (1 ...
... 6. Antares emits a large portion of its energy in what non-visible wavelength? (1 pt) _____________________________________________________________________________________________________ 7. White dwarfs can go supernova when they approach a certain mass. What is the name of this “critical mass”? (1 ...
Name
... Hipparchus grouped stars according to their brightness or magnitude. He called the twenty brightest stars first magnitude stars. Stars half that bright were second magnitude. Third magnitude stars were half as bright as second magnitude stars, and so on. Modern astronomers have changed Hipparchus’s ...
... Hipparchus grouped stars according to their brightness or magnitude. He called the twenty brightest stars first magnitude stars. Stars half that bright were second magnitude. Third magnitude stars were half as bright as second magnitude stars, and so on. Modern astronomers have changed Hipparchus’s ...
The Family of Stars
... but Sirius B is a white dwarf star, with a radius ~ 560 times smaller than Spica B. ...
... but Sirius B is a white dwarf star, with a radius ~ 560 times smaller than Spica B. ...
Final Study Guide
... 23. What is meant by the “runaway greenhouse effect” that makes Venus so hot? How does it work? 24. Describe Uranus in terms of size, composition, appearance, rotation rate, atmosphere, and magnetic field. 25. Describe the appearance and composition of asteroids, and their three major locations in t ...
... 23. What is meant by the “runaway greenhouse effect” that makes Venus so hot? How does it work? 24. Describe Uranus in terms of size, composition, appearance, rotation rate, atmosphere, and magnetic field. 25. Describe the appearance and composition of asteroids, and their three major locations in t ...
Bringing E.T. into Your Classroom The Search for
... 4. Small diameter planets or large diameter planets. 5. Small mass planets or large mass planets. 6. Planets close to star or planets far from star. ...
... 4. Small diameter planets or large diameter planets. 5. Small mass planets or large mass planets. 6. Planets close to star or planets far from star. ...
My Moon: Moon Phases - University of Louisville
... ● The orbits of Earth around the sun and of the moon around Earth, together with the rotation of Earth about an axis between its North and South poles, cause observable patterns. These include day and night; daily changes in the length and direction of shadows; and different positions of the sun, mo ...
... ● The orbits of Earth around the sun and of the moon around Earth, together with the rotation of Earth about an axis between its North and South poles, cause observable patterns. These include day and night; daily changes in the length and direction of shadows; and different positions of the sun, mo ...
Beyond the Solar System
... time, during a whole year you will only see about six thousand. On any night you will only see some of the stars, the others will be below the horizon, and of course there are millions of stars that are much too faint to see without a telescope. The stars seem to be grouped together and we call thes ...
... time, during a whole year you will only see about six thousand. On any night you will only see some of the stars, the others will be below the horizon, and of course there are millions of stars that are much too faint to see without a telescope. The stars seem to be grouped together and we call thes ...
Today`s Powerpoint
... fast depends on mass of H available and rate of fusion. Mass of H in core depends on mass of star. Fusion rate is related to luminosity (fusion reactions make the radiation energy). ...
... fast depends on mass of H available and rate of fusion. Mass of H in core depends on mass of star. Fusion rate is related to luminosity (fusion reactions make the radiation energy). ...
Become a Member - Department of Physics and Astronomy
... and the Sun were substantially identical. Russell wrote [2] “The agreement of the solar and terrestrial lists is such as to confirm very strongly Rowland’s opinion that, if the Earth’s crust should be raised to the temperature of the Sun’s atmosphere, it would give a very similar absorption spectrum ...
... and the Sun were substantially identical. Russell wrote [2] “The agreement of the solar and terrestrial lists is such as to confirm very strongly Rowland’s opinion that, if the Earth’s crust should be raised to the temperature of the Sun’s atmosphere, it would give a very similar absorption spectrum ...
7a Properties of Stars.pptx
... • Astronomical unit (AU) – 1 AU is the distance between the Sun and Earth • Our closest star (other than the sun) is 4.3 light-‐ years away. ...
... • Astronomical unit (AU) – 1 AU is the distance between the Sun and Earth • Our closest star (other than the sun) is 4.3 light-‐ years away. ...
Stars
... star, you can refer to its absolute magnitude or apparent magnitude. • Absolute magnitude is a measure of the amount of light it gives off. • Apparent magnitude is a measure of the amount of light received on Earth. • A star that’s dim can appear bright if it’s close to Earth, and a star that is bri ...
... star, you can refer to its absolute magnitude or apparent magnitude. • Absolute magnitude is a measure of the amount of light it gives off. • Apparent magnitude is a measure of the amount of light received on Earth. • A star that’s dim can appear bright if it’s close to Earth, and a star that is bri ...
Universe and Galaxy Short Study Guide
... Black holes in the centers of giant galaxies—some more than one billion solar masses—had enough infalling gas to once blaze as quasars. The final mass of a black hole is not primordial, but instead is determined during the galaxy formation process. This shows that there is a close relationship betwe ...
... Black holes in the centers of giant galaxies—some more than one billion solar masses—had enough infalling gas to once blaze as quasars. The final mass of a black hole is not primordial, but instead is determined during the galaxy formation process. This shows that there is a close relationship betwe ...
J tieutifit meti(au.
... Not far from the uppermost of these fainter stars the ing moon. The new moon of the month occurs on the Cleveland were devoted to the manufacture of heavy naked eye, on a clear night, detects a hazy speck. It 15th, the first quarter on the 22d, full moon on the machinery required by the operation of ...
... Not far from the uppermost of these fainter stars the ing moon. The new moon of the month occurs on the Cleveland were devoted to the manufacture of heavy naked eye, on a clear night, detects a hazy speck. It 15th, the first quarter on the 22d, full moon on the machinery required by the operation of ...
Lecture 02: Astronomical Optical Telescopes
... Astigmatism: off-axis point aberration caused by the inclination of incident wavefronts relative to the optical surface Astigmatism: results from the projectional asymmetry onto surface Astigmatism: the focus of rays in the plane containing the axis of the system and off-axis source (the tangential ...
... Astigmatism: off-axis point aberration caused by the inclination of incident wavefronts relative to the optical surface Astigmatism: results from the projectional asymmetry onto surface Astigmatism: the focus of rays in the plane containing the axis of the system and off-axis source (the tangential ...
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.