Core Theme 2: Constellations
... the first evidence of atmospheric water vapor beyond the solar system, while extrasolar planets orbiting the star HR 8799 also in Pegasus are the first to be directly imaged. ...
... the first evidence of atmospheric water vapor beyond the solar system, while extrasolar planets orbiting the star HR 8799 also in Pegasus are the first to be directly imaged. ...
The Milky Way Galaxy
... Astronomical Unit (AU) = 93 million miles or 1.5 x 108 km Distance between Earth and Sun ...
... Astronomical Unit (AU) = 93 million miles or 1.5 x 108 km Distance between Earth and Sun ...
MilkyWay
... Astronomical Unit (AU) = 93 million miles or 1.5 x 108 km Distance between Earth and Sun ...
... Astronomical Unit (AU) = 93 million miles or 1.5 x 108 km Distance between Earth and Sun ...
How do the most massive galaxies constrain theories of
... Results from state-of-the-art numerical hydrodynamic simulations are very similar ...
... Results from state-of-the-art numerical hydrodynamic simulations are very similar ...
2. A giant hand took one of the planets discovered
... 2. A giant hand took one of the planets discovered around other stars and put it in the solar system at the same distance from the sun as from its star. The mass of the planet is approximately that of Jupiter and the orbit is approximately that of Earth. These are the “hot Jupiters”, as big as Jupit ...
... 2. A giant hand took one of the planets discovered around other stars and put it in the solar system at the same distance from the sun as from its star. The mass of the planet is approximately that of Jupiter and the orbit is approximately that of Earth. These are the “hot Jupiters”, as big as Jupit ...
Today`s Powerpoint
... Radius of Sun = 7 x 105 km = 109 REarth = 1 RSun Luminosity of Sun = 4 x 1033 erg/s = 1 LSun (amount of energy put out each second in form of radiation, = 1025 40 W light bulbs) The Sun in X-rays over several years ...
... Radius of Sun = 7 x 105 km = 109 REarth = 1 RSun Luminosity of Sun = 4 x 1033 erg/s = 1 LSun (amount of energy put out each second in form of radiation, = 1025 40 W light bulbs) The Sun in X-rays over several years ...
Astron 104 Laboratory #7 Nuclear Fusion and Stars
... of protons is the atomic number of the element. Neutrons add mass to the nucleus without changing what element it is. 2. Many important properties of atomic elements are encoded in the periodic table, which might already be familiar from high school chemistry. Use a periodic table to determine the e ...
... of protons is the atomic number of the element. Neutrons add mass to the nucleus without changing what element it is. 2. Many important properties of atomic elements are encoded in the periodic table, which might already be familiar from high school chemistry. Use a periodic table to determine the e ...
1 - Uplift North Hills Prep
... (iii) Light from Vega is absorbed by a dust cloud between Vega and Earth. Suggest the effect, if any, this will have on determining the distance of Vega from Earth. ● Vega appears dimmer; ● hence distance over-estimated; accept: ● Vega will look redder (because blue light scatters more in dust); ● s ...
... (iii) Light from Vega is absorbed by a dust cloud between Vega and Earth. Suggest the effect, if any, this will have on determining the distance of Vega from Earth. ● Vega appears dimmer; ● hence distance over-estimated; accept: ● Vega will look redder (because blue light scatters more in dust); ● s ...
Document
... (iii) Light from Vega is absorbed by a dust cloud between Vega and Earth. Suggest the effect, if any, this will have on determining the distance of Vega from Earth. ● Vega appears dimmer; ● hence distance over-estimated; accept: ● Vega will look redder (because blue light scatters more in dust); ● s ...
... (iii) Light from Vega is absorbed by a dust cloud between Vega and Earth. Suggest the effect, if any, this will have on determining the distance of Vega from Earth. ● Vega appears dimmer; ● hence distance over-estimated; accept: ● Vega will look redder (because blue light scatters more in dust); ● s ...
Proxima
... “red giant” with a surface temperature of 3330K. What is a red giant? A red giant is a star that expands and cools once it runs out of hydrogen fuel. These stars are not as red to our eyes as they are orange. Red Giant http://foxd3sign.deviantart.com/ar t/RED-GIANT-001-164580656 ...
... “red giant” with a surface temperature of 3330K. What is a red giant? A red giant is a star that expands and cools once it runs out of hydrogen fuel. These stars are not as red to our eyes as they are orange. Red Giant http://foxd3sign.deviantart.com/ar t/RED-GIANT-001-164580656 ...
Finding the North Star
... …is known to astronomers as “Polaris” because of its place over the North Pole. …is really useful if you are in the Earth’s northern hemisphere, and you are lost in the wilderness on a clear night. ...
... …is known to astronomers as “Polaris” because of its place over the North Pole. …is really useful if you are in the Earth’s northern hemisphere, and you are lost in the wilderness on a clear night. ...
Finding the North Star
... …is known to astronomers as “Polaris” because of its place over the North Pole. …is really useful if you are in the Earth’s northern hemisphere, and you are lost in the wilderness on a clear night. ...
... …is known to astronomers as “Polaris” because of its place over the North Pole. …is really useful if you are in the Earth’s northern hemisphere, and you are lost in the wilderness on a clear night. ...
celestial equator
... Fainter stars were classified as being of second, third, fourth, or fifth magnitude. Now stars can be measured to +/- 0.01 magnitude. We have also expanded the scale to include negative values, and much larger positive values. Sirius, for example, has an apparent magnitude of -1.42. The faintest sta ...
... Fainter stars were classified as being of second, third, fourth, or fifth magnitude. Now stars can be measured to +/- 0.01 magnitude. We have also expanded the scale to include negative values, and much larger positive values. Sirius, for example, has an apparent magnitude of -1.42. The faintest sta ...
Unit 8 Chapter 29
... Fusion is the combining of the nuclei of lighter elements to form heavier ones. It is the source of all stars light energy. The Final Product The energy released during the three steps of nuclear fusion causes the sun to shine and gives the sun its high temperature. ...
... Fusion is the combining of the nuclei of lighter elements to form heavier ones. It is the source of all stars light energy. The Final Product The energy released during the three steps of nuclear fusion causes the sun to shine and gives the sun its high temperature. ...
Making Heavier Metals
... One place where this process occurs is inside very massive stars when they explode as supernovae . In such a dramatic event, the build-up proceeds very rapidly, via the so-called "r-process" ("r" for rapid). The AGB stars But not all heavy elements are created in such an explosive way. A second poss ...
... One place where this process occurs is inside very massive stars when they explode as supernovae . In such a dramatic event, the build-up proceeds very rapidly, via the so-called "r-process" ("r" for rapid). The AGB stars But not all heavy elements are created in such an explosive way. A second poss ...
Document
... spectra. • Different types of spectra mean different stars are made of different elements. ...
... spectra. • Different types of spectra mean different stars are made of different elements. ...
PHYS2330 Intermediate Mechanics Fall 2010 Final Exam
... 9. A pendulum bob hangs from a string in a laboratory located precisely at the Earth’s equator. The bob is not moving. It hangs A. directly towards the center of the Earth. B. nearly towards the center of the Earth, but slightly north. C. nearly towards the center of the Earth, but slightly south. D ...
... 9. A pendulum bob hangs from a string in a laboratory located precisely at the Earth’s equator. The bob is not moving. It hangs A. directly towards the center of the Earth. B. nearly towards the center of the Earth, but slightly north. C. nearly towards the center of the Earth, but slightly south. D ...
Slide 1
... • P ~ r (density) about 100 x P (ideal gas) • Electron energy and momentum become relativistic as calculated by S. Chandraseker (Nobel prize in ‘83 for stellar structure) ...
... • P ~ r (density) about 100 x P (ideal gas) • Electron energy and momentum become relativistic as calculated by S. Chandraseker (Nobel prize in ‘83 for stellar structure) ...
Big idea # 5 * Earth in space in time
... the gas and dust. Once the particles are close enough, nuclear reaction can start. A Star is created – Protostar “baby star” ...
... the gas and dust. Once the particles are close enough, nuclear reaction can start. A Star is created – Protostar “baby star” ...
Herbig Ae/Be Stars
... starting point for for T Tauri stars depends on factors such as how much thermal energy is added during protostellar accretion + The youngest low mass stars are observed near the birthline, but a definitive observational test does not yet exist + D-burning is insignificant for more massive stars (M ...
... starting point for for T Tauri stars depends on factors such as how much thermal energy is added during protostellar accretion + The youngest low mass stars are observed near the birthline, but a definitive observational test does not yet exist + D-burning is insignificant for more massive stars (M ...
Abstract and Summary
... Seismic evidence for the loss of stellar angular momentum before the white-dwarf stage (Nature 416, 501, 2009) # White-dwarfs represent the remnant form of 95% of all stars. If it is assumed that stars retain their angular momentum throughout the evolutionary process, then white-dwarfs should rotate ...
... Seismic evidence for the loss of stellar angular momentum before the white-dwarf stage (Nature 416, 501, 2009) # White-dwarfs represent the remnant form of 95% of all stars. If it is assumed that stars retain their angular momentum throughout the evolutionary process, then white-dwarfs should rotate ...
Jupiter – key facts Largest and most massive planet in the Solar
... Io – the closest of the galilean satellites. Volcanically acFve due to internal heaFng caused by Fdal flexing by Jupiter’s gravitaFonal field because of Io’s eccentric orbit. Mean density suggests it ...
... Io – the closest of the galilean satellites. Volcanically acFve due to internal heaFng caused by Fdal flexing by Jupiter’s gravitaFonal field because of Io’s eccentric orbit. Mean density suggests it ...
Notes 1 - cloudfront.net
... 1 supernova = bright as a galaxy (lasts for days or weeks) white dwarf: ~ a small star composed mostly of electron-degenerate matter ~ density - 1 x 109 kg/m3 ~ it no longer undergoes fusion reactions, so the star has no source of energy ~ it is Earth-sized Type 1A supernova: ~ a sub-category of cat ...
... 1 supernova = bright as a galaxy (lasts for days or weeks) white dwarf: ~ a small star composed mostly of electron-degenerate matter ~ density - 1 x 109 kg/m3 ~ it no longer undergoes fusion reactions, so the star has no source of energy ~ it is Earth-sized Type 1A supernova: ~ a sub-category of cat ...
Birth of Stars - High Energy Physics at Wayne State
... cores. Generating energy by fusion defines a star. Hydrogen is being converted to helium, but eventually the supply of hydrogen will run out. Stars range in mass from about 1/12 Msun to 200 Msun. Low mass stars are more common. For main sequence stars, mass and luminosity are related such that high ...
... cores. Generating energy by fusion defines a star. Hydrogen is being converted to helium, but eventually the supply of hydrogen will run out. Stars range in mass from about 1/12 Msun to 200 Msun. Low mass stars are more common. For main sequence stars, mass and luminosity are related such that high ...
IK Pegasi
IK Pegasi (or HR 8210) is a binary star system in the constellation Pegasus. It is just luminous enough to be seen with the unaided eye, at a distance of about 150 light years from the Solar System.The primary (IK Pegasi A) is an A-type main-sequence star that displays minor pulsations in luminosity. It is categorized as a Delta Scuti variable star and it has a periodic cycle of luminosity variation that repeats itself about 22.9 times per day. Its companion (IK Pegasi B) is a massive white dwarf—a star that has evolved past the main sequence and is no longer generating energy through nuclear fusion. They orbit each other every 21.7 days with an average separation of about 31 million kilometres, or 19 million miles, or 0.21 astronomical units (AU). This is smaller than the orbit of Mercury around the Sun.IK Pegasi B is the nearest known supernova progenitor candidate. When the primary begins to evolve into a red giant, it is expected to grow to a radius where the white dwarf can accrete matter from the expanded gaseous envelope. When the white dwarf approaches the Chandrasekhar limit of 1.44 solar masses (M☉), it may explode as a Type Ia supernova.