Stellar Helium Burning in Other Universes: A
... burning in 20 M stars have been carried out [12] using different values for the location of the resonance — but continuing to require the triple alpha reaction. These results show that a 60 keV increase in the crucial energy level in the 12 C nucleus does not significantly alter carbon production i ...
... burning in 20 M stars have been carried out [12] using different values for the location of the resonance — but continuing to require the triple alpha reaction. These results show that a 60 keV increase in the crucial energy level in the 12 C nucleus does not significantly alter carbon production i ...
Our Expanding Universe - Center for Astrophysics
... Observation: 90% of matter is an unknown form: Dark Matter. Refine: A new and unknown form of matter exists. But its gravity works the same way, and its presence is needed to explain how the universe looks. ...
... Observation: 90% of matter is an unknown form: Dark Matter. Refine: A new and unknown form of matter exists. But its gravity works the same way, and its presence is needed to explain how the universe looks. ...
File
... Observation: 90% of matter is an unknown form: Dark Matter. Refine: A new and unknown form of matter exists. But its gravity works the same way, and its presence is needed to explain how the universe looks. ...
... Observation: 90% of matter is an unknown form: Dark Matter. Refine: A new and unknown form of matter exists. But its gravity works the same way, and its presence is needed to explain how the universe looks. ...
Notes - Bill Wolf
... preserved the original magnitude scale, though it is worthy of note that since 2.5125 ≈ 100, a magnitude difference of 5 yields a brightness ratio of 100. What do we mean by “brightness,” anyway? It’s exactly what we talked about in Astro 1: it’s the flux that reaches our eyes here at earth. Absolut ...
... preserved the original magnitude scale, though it is worthy of note that since 2.5125 ≈ 100, a magnitude difference of 5 yields a brightness ratio of 100. What do we mean by “brightness,” anyway? It’s exactly what we talked about in Astro 1: it’s the flux that reaches our eyes here at earth. Absolut ...
HON 392 - Chapman University
... The Contemporary Universe (Einstein/Hubble): We live on rotating planet, spinning at about 1000 mph, revolving in its one year long elliptical path around a medium size star--the Sun--at roughly 19 miles per second (67,000 miles per hour). Our Sun and Solar system as a whole--located about 2/3’s fro ...
... The Contemporary Universe (Einstein/Hubble): We live on rotating planet, spinning at about 1000 mph, revolving in its one year long elliptical path around a medium size star--the Sun--at roughly 19 miles per second (67,000 miles per hour). Our Sun and Solar system as a whole--located about 2/3’s fro ...
Star Trek Grids
... the transporter. The ships have agreed to meet at the midpoint of the line segment connecting the two ships’ current positions. a. Find the holodeck grid coordinates of the meeting ...
... the transporter. The ships have agreed to meet at the midpoint of the line segment connecting the two ships’ current positions. a. Find the holodeck grid coordinates of the meeting ...
Document
... All of the previous examples use weak-field (and hence small angle) approximations. In strong gravitational fields, the paths of light can be complex and analytic solutions difficult to find. Armed with the metric, it is possible to integrate the geodesic equation and hence calculate the light paths ...
... All of the previous examples use weak-field (and hence small angle) approximations. In strong gravitational fields, the paths of light can be complex and analytic solutions difficult to find. Armed with the metric, it is possible to integrate the geodesic equation and hence calculate the light paths ...
File - Mr. Pelton Science
... • Galaxies that are not flattened into a disk and do not have spiral arms are called elliptical galaxies. • Round ellipticals are denoted E0 • Elongated ellipticals are denoted E7 ...
... • Galaxies that are not flattened into a disk and do not have spiral arms are called elliptical galaxies. • Round ellipticals are denoted E0 • Elongated ellipticals are denoted E7 ...
MONDO Handbuch Version 10.04 Eng.qxd
... Once you have installed and adjusted the MONDO, the globe will have the same alignment as the planet Earth. The polar axis points toward the celestial pole, which is very close to the Polar Star in the night sky. The sun then illuminates the globe as it does the real earth, so that the day and night ...
... Once you have installed and adjusted the MONDO, the globe will have the same alignment as the planet Earth. The polar axis points toward the celestial pole, which is very close to the Polar Star in the night sky. The sun then illuminates the globe as it does the real earth, so that the day and night ...
NASA FUSE Satellite Solves the Case of the Missing Deuterium
... deuterium has been destroyed, FUSE has found, suggesting that less than the amount expected has cycled through stars. "The peak galactic detection levels are likely close to the real total deuterium abundance in the Milky Way, with the rest of it in hiding, not destroyed," said Warren Moos of Johns ...
... deuterium has been destroyed, FUSE has found, suggesting that less than the amount expected has cycled through stars. "The peak galactic detection levels are likely close to the real total deuterium abundance in the Milky Way, with the rest of it in hiding, not destroyed," said Warren Moos of Johns ...
Lecture Notes – Galaxies
... Energy problem – how can so much energy be generated from such a small object? Super-massive black hole of 108 M has a Schwarzschild radius of 3 × 108 km so size is not a problem. Energy is converted from gravitational to radiative energy as material spirals in an ...
... Energy problem – how can so much energy be generated from such a small object? Super-massive black hole of 108 M has a Schwarzschild radius of 3 × 108 km so size is not a problem. Energy is converted from gravitational to radiative energy as material spirals in an ...
Ramin A. Skibba - Southern California Center for Galaxy Evolution
... significant fraction of halos, the BHG is not the central galaxy. This fraction is large and increases from ≈25% in low-mass halos to ≈40% in massive halos. We argue that the large fraction of halos with satellite BHGs is due to recently accreted relatively massive satellite galaxies that have not m ...
... significant fraction of halos, the BHG is not the central galaxy. This fraction is large and increases from ≈25% in low-mass halos to ≈40% in massive halos. We argue that the large fraction of halos with satellite BHGs is due to recently accreted relatively massive satellite galaxies that have not m ...
The Age Distribution of Potential Intelligent Life in the Milky Way
... Are we alone in the Universe? This is one of the most important questions facing our civilisation today and has no doubt been pondered by countless people over the centuries. The sheer size of the universe leads many to conclude that, “no, we are not alone”. However, with no obvious evidence of othe ...
... Are we alone in the Universe? This is one of the most important questions facing our civilisation today and has no doubt been pondered by countless people over the centuries. The sheer size of the universe leads many to conclude that, “no, we are not alone”. However, with no obvious evidence of othe ...
The Milky Way Galaxy
... Structure of the Milky Way The energy for the state where the spins are parallel is higher than for the state where the spins are anti-parallel The hydrogen atom, if it is in the spin parallel state, can make a transition to the spin anti-parallel state releasing energy When a transition does a occ ...
... Structure of the Milky Way The energy for the state where the spins are parallel is higher than for the state where the spins are anti-parallel The hydrogen atom, if it is in the spin parallel state, can make a transition to the spin anti-parallel state releasing energy When a transition does a occ ...
M104: The Sombrero Galaxy
... space. Appropriately called the Sombrero Galaxy, its catalogue name is Messier 104 (M104). Thick dust lanes make up the brim of the galaxy. The brim winds into the brilliant white crown, made up of a central bulge of older stars. These stars are much like those in the middle of our own Milky Way Gal ...
... space. Appropriately called the Sombrero Galaxy, its catalogue name is Messier 104 (M104). Thick dust lanes make up the brim of the galaxy. The brim winds into the brilliant white crown, made up of a central bulge of older stars. These stars are much like those in the middle of our own Milky Way Gal ...
A Detailed Derivation of the Radial Velocity Equation
... found using the RADIAL VELOCITY METHOD (also known as DOPPLER SPECTROSCOPY or the DOPPLER METHOD). The purpose of this paper is to derive the theoretical equation that is associated with the variation over time of a star’s velocity along an observer’s line‐of ...
... found using the RADIAL VELOCITY METHOD (also known as DOPPLER SPECTROSCOPY or the DOPPLER METHOD). The purpose of this paper is to derive the theoretical equation that is associated with the variation over time of a star’s velocity along an observer’s line‐of ...
A Modern View of the Universe
... The Scale of the Solar System One of the best ways to develop perspective on cosmic sizes and distances is to imagine our solar system shrunk down to a scale that would allow you to walk through it. The Voyage scale model solar system in Washington, D.C., makes such a walk possible (Figure 1.4). Th ...
... The Scale of the Solar System One of the best ways to develop perspective on cosmic sizes and distances is to imagine our solar system shrunk down to a scale that would allow you to walk through it. The Voyage scale model solar system in Washington, D.C., makes such a walk possible (Figure 1.4). Th ...
The Milky Way Galaxy is Heading for a Major Cosmic Collision
... • Necessary to determine the complete 3D velocity of an object • “Easy” to measure for stars close to the Sun • Very small and difficult to measure for distant objects • Never measured for Andromeda (tried since 1898) • Now finally measured with Hubble Space Telescope ...
... • Necessary to determine the complete 3D velocity of an object • “Easy” to measure for stars close to the Sun • Very small and difficult to measure for distant objects • Never measured for Andromeda (tried since 1898) • Now finally measured with Hubble Space Telescope ...
The Dynamics of the Galaxies in the Local Group
... • Necessary to determine the complete 3D velocity of an object • “Easy” to measure for stars close to the Sun • Very small and difficult to measure for distant objects • Never measured for Andromeda (tried since 1898) • Now finally measured with Hubble Space Telescope ...
... • Necessary to determine the complete 3D velocity of an object • “Easy” to measure for stars close to the Sun • Very small and difficult to measure for distant objects • Never measured for Andromeda (tried since 1898) • Now finally measured with Hubble Space Telescope ...
Curtis/Shapley Debate – 1920 - Tufts Institute of Cosmology
... If you have a telescope or another means of seeing fainter objects, the situation changes completely. But astronomers did not always have telescopes. Humanity didn't always know the limits of our Galaxy and the existence of other galaxies - this knowledge came only this century - what was thought p ...
... If you have a telescope or another means of seeing fainter objects, the situation changes completely. But astronomers did not always have telescopes. Humanity didn't always know the limits of our Galaxy and the existence of other galaxies - this knowledge came only this century - what was thought p ...
PHY104 - Introduction to Astrophysics
... So we have some experiments which show that light behaves as a wave, and other which show quite clearly that light behaves as a particle. In fact, there are even experiments that show that light can behave as both a particle and a wave at the same time! We are going to go back to the Young’s slit ex ...
... So we have some experiments which show that light behaves as a wave, and other which show quite clearly that light behaves as a particle. In fact, there are even experiments that show that light can behave as both a particle and a wave at the same time! We are going to go back to the Young’s slit ex ...
Static, Infinite, Etern and Auto sustentable Universe
... factor of 1.8 [13, 14, 15]. By extrapolation it is possible to suppose that in a larger scale it decreases with a tendency to a distribution following the inverse square law. Maybe the Universe has a kind of fractal structure that follows a power law (although with variance of scale). We propose th ...
... factor of 1.8 [13, 14, 15]. By extrapolation it is possible to suppose that in a larger scale it decreases with a tendency to a distribution following the inverse square law. Maybe the Universe has a kind of fractal structure that follows a power law (although with variance of scale). We propose th ...
Document
... Example if you are intersted. Star A has a magnitude of 5 and an absolte magnitude of 12. Thus: 12 - 5 = -5log(d)+ 5 Solving: log(d) = 7 - 5 = 2, d= 10^2 = 100 parsecs . Likewise, if you knew the star was 100 parsecs away, and had an aparent magnitude of 5 you would solve for an absolute magnitude o ...
... Example if you are intersted. Star A has a magnitude of 5 and an absolte magnitude of 12. Thus: 12 - 5 = -5log(d)+ 5 Solving: log(d) = 7 - 5 = 2, d= 10^2 = 100 parsecs . Likewise, if you knew the star was 100 parsecs away, and had an aparent magnitude of 5 you would solve for an absolute magnitude o ...
script
... Boston”). Others will answer in terms of time. (“It takes 5 hours to get from New York to Boston.”) Does one answer have anything to do with the other? Yes! How can that be? Audience members are assuming a speed for their travel, for example 50 miles per hour. In space we like to think about a cosmi ...
... Boston”). Others will answer in terms of time. (“It takes 5 hours to get from New York to Boston.”) Does one answer have anything to do with the other? Yes! How can that be? Audience members are assuming a speed for their travel, for example 50 miles per hour. In space we like to think about a cosmi ...
151 - ESO
... Observations with the Hubble Space Telescope suggest that the Andromeda Galaxy may have two cores. This is thought to be the result of a past merger with another galaxy. Such processes were once common in the Universe and still occur today. Indeed, the galaxy is approaching us at a speed of 68 kilom ...
... Observations with the Hubble Space Telescope suggest that the Andromeda Galaxy may have two cores. This is thought to be the result of a past merger with another galaxy. Such processes were once common in the Universe and still occur today. Indeed, the galaxy is approaching us at a speed of 68 kilom ...