Astronomy - Virginia Science Olympiad
... NGC 6240 (Two galaxies colliding, each with a supermassive blackhole at center) 3C321 (System of two galaxies rotating around each other) “Death Star Galaxy” supermassive blackhole ...
... NGC 6240 (Two galaxies colliding, each with a supermassive blackhole at center) 3C321 (System of two galaxies rotating around each other) “Death Star Galaxy” supermassive blackhole ...
Unit 3: Atomic Theory & Quantum Mechanics Section A.3
... The movements of electrons in atoms are not completely understood even now; however, evidence indicates that electrons do NOT move around the nucleus in circular orbits. ...
... The movements of electrons in atoms are not completely understood even now; however, evidence indicates that electrons do NOT move around the nucleus in circular orbits. ...
Document
... Moon (d1) and the distance between the Moon and the Sun (d2). The hypotenuse is then the distance between the Earth and Sun (d). We can measure the angle between d1 and d (A), it's the angular separation between the Sun and Moon in the sky. We derive the distance d by the ...
... Moon (d1) and the distance between the Moon and the Sun (d2). The hypotenuse is then the distance between the Earth and Sun (d). We can measure the angle between d1 and d (A), it's the angular separation between the Sun and Moon in the sky. We derive the distance d by the ...
The Milky Way II AST 112
... • Matter in the Milky Way goes in cycles – Matter is taken out of the ISM when stars are born – Matter is altered and returned to the ISM throughout the star’s life and when it dies – This is called the Star-Gas-Star Cycle ...
... • Matter in the Milky Way goes in cycles – Matter is taken out of the ISM when stars are born – Matter is altered and returned to the ISM throughout the star’s life and when it dies – This is called the Star-Gas-Star Cycle ...
Gamma-Ray-Bursts in Nuclear Astrophysics Giuseppe Pagliara
... Immediate discovery of Optical afterglow (van Paradijs et. al 97). ...
... Immediate discovery of Optical afterglow (van Paradijs et. al 97). ...
14-black-holes
... • What is the life cycle of a low mass star (<8 solar masses when on the main sequence)? • What is the life cycle of a high mass star (>8 solar masses when on the main sequence)? • After a supernova, what are the two fates of the core of the star? • What determines whether the core will be a neutron ...
... • What is the life cycle of a low mass star (<8 solar masses when on the main sequence)? • What is the life cycle of a high mass star (>8 solar masses when on the main sequence)? • After a supernova, what are the two fates of the core of the star? • What determines whether the core will be a neutron ...
LECTURE 2: I.Our Place in the Universe
... ★ The fact that looking deep into space means looking far back in time allows us to observe how the universe has changed through time ★ By looking to great distances, we can see what the universe looked like when it was younger ★ Our observable universe consists only of objects lying within 14 billi ...
... ★ The fact that looking deep into space means looking far back in time allows us to observe how the universe has changed through time ★ By looking to great distances, we can see what the universe looked like when it was younger ★ Our observable universe consists only of objects lying within 14 billi ...
PowerPoint
... – Presence of brightest stars in a galaxy by type – Presence of globular star clusters – Presence of supernovas by type (I and II) ...
... – Presence of brightest stars in a galaxy by type – Presence of globular star clusters – Presence of supernovas by type (I and II) ...
Physics@Brock - Brock University
... 34. The pase of the Moon when a solar eclipse is observed is (a) new moon. (b) full moon. 35. The pase of the Moon when a lunar eclipse is observed is (a) new moon. (b) full moon. 36. How did Aristarchus deduce that the Sun is at a much greater distance than the Moon? (a) From the length of the shad ...
... 34. The pase of the Moon when a solar eclipse is observed is (a) new moon. (b) full moon. 35. The pase of the Moon when a lunar eclipse is observed is (a) new moon. (b) full moon. 36. How did Aristarchus deduce that the Sun is at a much greater distance than the Moon? (a) From the length of the shad ...
Red shift in spectra of galaxies
... in the ultraviolet area of the spectrum is determined by the radiation of hot stars of our Galaxy. Apparently, the higher temperature T of the star surface, the more photons in ultraviolet radiation it emits. However, the number of stars having this temperature sharply decreases with the growth of T ...
... in the ultraviolet area of the spectrum is determined by the radiation of hot stars of our Galaxy. Apparently, the higher temperature T of the star surface, the more photons in ultraviolet radiation it emits. However, the number of stars having this temperature sharply decreases with the growth of T ...
Why do scientists believe that?
... photons act like particles with energy and momentum. When they scatter from electrons in matter they lose energy in a particular way, related to the angle of scattering. For radio waves and even visible light the effect is too small to notice. For X-rays it can be detected easily. ...
... photons act like particles with energy and momentum. When they scatter from electrons in matter they lose energy in a particular way, related to the angle of scattering. For radio waves and even visible light the effect is too small to notice. For X-rays it can be detected easily. ...
The Big Bang Theory
... universe tells us how long ago the Big Bang happened 2. Background Microwave Radiation • There is microwave radiation everywhere in the universe left over from the Big Bang ...
... universe tells us how long ago the Big Bang happened 2. Background Microwave Radiation • There is microwave radiation everywhere in the universe left over from the Big Bang ...
The 100-billion-body problem A full-scale computer simulation of the
... The basic idea was to start with a twobody solution, then add in the effects of other bodies as small perturbations that slightly alter the orbit. The result of this process is again a set of equations that give positions and velocities as functions of t, but the equations are more complicated, and ...
... The basic idea was to start with a twobody solution, then add in the effects of other bodies as small perturbations that slightly alter the orbit. The result of this process is again a set of equations that give positions and velocities as functions of t, but the equations are more complicated, and ...
The sounds of the stars
... These waves provide information that astronomers can’t get in any other way: triggered by the turbulent rise and fall of hot gases on the star’s surface, the vibrations penetrate deep into the stellar interior and become resonating tones that reveal the star’s size, composition and mass (see ‘Celest ...
... These waves provide information that astronomers can’t get in any other way: triggered by the turbulent rise and fall of hot gases on the star’s surface, the vibrations penetrate deep into the stellar interior and become resonating tones that reveal the star’s size, composition and mass (see ‘Celest ...
Physics 2028: Great Ideas in Science II: The Changing Earth Module
... as supernovae. The shock sent out by such a supernova can excite further star formation. B. The Free-Fall Stage of the Solar System’s Birth. 1. As a portion of a GMC begins to contract, cloud complexes with masses greater than ∼ 50 M become unstable and fragment into smaller cloudlets (see Figure I ...
... as supernovae. The shock sent out by such a supernova can excite further star formation. B. The Free-Fall Stage of the Solar System’s Birth. 1. As a portion of a GMC begins to contract, cloud complexes with masses greater than ∼ 50 M become unstable and fragment into smaller cloudlets (see Figure I ...
Master Page
... Germany, New Zealand, India and the United Kingdom billion years before it will expand, gobble up the Earth and were all involved in making sure that SALT was built as eventually shrink again, leaving behind mostly gas, which perfectly as possible. will form a beautiful cloud around the star, called ...
... Germany, New Zealand, India and the United Kingdom billion years before it will expand, gobble up the Earth and were all involved in making sure that SALT was built as eventually shrink again, leaving behind mostly gas, which perfectly as possible. will form a beautiful cloud around the star, called ...
Physical properties of Hα selected star forming galaxies at z ~ 0.84
... overall extinction correction AV = 1 mag obtained from the CFRS sample, except for two galaxies where high quality spectra were available and f (Hβ) and f (Hδ) could be measured. [1] did not attempt the extinction correction though we can apply the typical correction A(Hα) = 1 mag [2] for these kind ...
... overall extinction correction AV = 1 mag obtained from the CFRS sample, except for two galaxies where high quality spectra were available and f (Hβ) and f (Hδ) could be measured. [1] did not attempt the extinction correction though we can apply the typical correction A(Hα) = 1 mag [2] for these kind ...
Linking Asteroids and Meteorites through Reflectance
... • We can see the stars rotating around each other with a telescope ...
... • We can see the stars rotating around each other with a telescope ...
Solutions2
... b) Star A has an apparent magnitude of 17.4. What is its absolute magnitude? What is the absolute magnitude of star B? m − M = 5 log(d) − 5. For A, M = 17.4 − 5 log(1000) + 5=+7.4. Star B is identical, so also has M =+7.4. c) Star C has a (approximately) blackbody spectrum which peaks at the same wa ...
... b) Star A has an apparent magnitude of 17.4. What is its absolute magnitude? What is the absolute magnitude of star B? m − M = 5 log(d) − 5. For A, M = 17.4 − 5 log(1000) + 5=+7.4. Star B is identical, so also has M =+7.4. c) Star C has a (approximately) blackbody spectrum which peaks at the same wa ...
Star Questions 2008 - Fort Thomas Independent Schools
... Describe the death of these two stars, one with 2 solar masses and one with 10 solar masses. What is a supernova and what is its significance? Describe the difference between a Type I and Type II supernova? What will happen to our Sun when it dies? Which is more luminous, a low-mass or a high-mass s ...
... Describe the death of these two stars, one with 2 solar masses and one with 10 solar masses. What is a supernova and what is its significance? Describe the difference between a Type I and Type II supernova? What will happen to our Sun when it dies? Which is more luminous, a low-mass or a high-mass s ...
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... ____________ 25. stars in the band that runs along the middle of the H-R diagram 26. Which one of the following statements is NOT true of supernovas? a. They are explosions in which a massive star collapses. b. They are explosions that occur at the beginning of a star’s life. c. They can be brighter ...
... ____________ 25. stars in the band that runs along the middle of the H-R diagram 26. Which one of the following statements is NOT true of supernovas? a. They are explosions in which a massive star collapses. b. They are explosions that occur at the beginning of a star’s life. c. They can be brighter ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.