Doppler Effect - SAVE MY EXAMS!
... The atmosphere has little effect on radio waves between 30 MHz and 300 GHz. This radio window was first exploited in 1946 when a short pulse of radio waves of wavelength 2.7 m was transmitted from the Earth and reflected back by the Moon. (i) ...
... The atmosphere has little effect on radio waves between 30 MHz and 300 GHz. This radio window was first exploited in 1946 when a short pulse of radio waves of wavelength 2.7 m was transmitted from the Earth and reflected back by the Moon. (i) ...
Earth and Stars
... position A. 6 months later, the Earth has moved around the Sun to position B - this provides a baseline of 2AU. Compared to the more distant 'fixed' stars, the foreground star has moved on the sky by an ...
... position A. 6 months later, the Earth has moved around the Sun to position B - this provides a baseline of 2AU. Compared to the more distant 'fixed' stars, the foreground star has moved on the sky by an ...
Introduction to the HR Diagram
... located in the upper right-hand corner of the H-R diagram. As the central core of a main sequence star with a mass from ~0.8 to 8 solar masses runs out of hydrogen, radiation pressure no longer balances gravity and the star begins to collapse. There is still hydrogen in the outer layers surrounding ...
... located in the upper right-hand corner of the H-R diagram. As the central core of a main sequence star with a mass from ~0.8 to 8 solar masses runs out of hydrogen, radiation pressure no longer balances gravity and the star begins to collapse. There is still hydrogen in the outer layers surrounding ...
Biblical Astrophysics - The Call of the Bride
... Scientists have concluded that we currently live in a universe of primarily secondgeneration stars. Most of the first-generation stars have already either violently exploded as super novas (which is where all atoms heavier than iron come from), or they have peacefully cast off their outer atmosphere ...
... Scientists have concluded that we currently live in a universe of primarily secondgeneration stars. Most of the first-generation stars have already either violently exploded as super novas (which is where all atoms heavier than iron come from), or they have peacefully cast off their outer atmosphere ...
Section 1 Notes on Stars
... of term – this is about the birth, life and death of stars and that is NOT evolution)? 2. What kind of matter exists in the spaces between the stars? 3. In what kind of nebulae do new stars form? 4. What steps are involved in forming a star like the ...
... of term – this is about the birth, life and death of stars and that is NOT evolution)? 2. What kind of matter exists in the spaces between the stars? 3. In what kind of nebulae do new stars form? 4. What steps are involved in forming a star like the ...
Document
... of term – this is about the birth, life and death of stars and that is NOT evolution)? 2. What kind of matter exists in the spaces between the stars? 3. In what kind of nebulae do new stars form? 4. What steps are involved in forming a star like the ...
... of term – this is about the birth, life and death of stars and that is NOT evolution)? 2. What kind of matter exists in the spaces between the stars? 3. In what kind of nebulae do new stars form? 4. What steps are involved in forming a star like the ...
The H-R Diagram
... • Visual Binaries: You can actually see two separate stars on your images. These are relatively rare – need wide separations, like out to Pluto and beyond – to separate the stars on images • Spectroscopic binaries: by far the most common, binary pairs are usually so close you can only see a blended ...
... • Visual Binaries: You can actually see two separate stars on your images. These are relatively rare – need wide separations, like out to Pluto and beyond – to separate the stars on images • Spectroscopic binaries: by far the most common, binary pairs are usually so close you can only see a blended ...
Today`s Powerpoint
... - contains young and old stars, gas, dust. Has spiral structure - vertical thickness roughly 100 pc - 2 kpc (depending on component. Most gas and dust in thinner layer, most stars in thicker layer) ...
... - contains young and old stars, gas, dust. Has spiral structure - vertical thickness roughly 100 pc - 2 kpc (depending on component. Most gas and dust in thinner layer, most stars in thicker layer) ...
Two Dissipating Exoplanet Atmospheres Taken from: Hubble
... A number of these bodies are called Hot Jupiters. These are giant gas planets that orbit exceedingly close to their parent stars. In contrast to Jupiter, which circles the Sun in approximately twelve (Earth) years, these exoplanets revolve about their stars in only days or weeks. Being so close to t ...
... A number of these bodies are called Hot Jupiters. These are giant gas planets that orbit exceedingly close to their parent stars. In contrast to Jupiter, which circles the Sun in approximately twelve (Earth) years, these exoplanets revolve about their stars in only days or weeks. Being so close to t ...
H-R Diagram
... The Hertzsprung-Russell diagram, or H-R diagram, is a graph in which a star's temperature is plotted against its absolute magnitude. From such a diagram, other information about a star's properties and life cycle can be determined. A simplified H-R diagram appears in your textbook. In this laborator ...
... The Hertzsprung-Russell diagram, or H-R diagram, is a graph in which a star's temperature is plotted against its absolute magnitude. From such a diagram, other information about a star's properties and life cycle can be determined. A simplified H-R diagram appears in your textbook. In this laborator ...
G485 5.5.1 Structure of the Universe
... Apart from those in our own solar system, no other planets can be detected by direct visual observation. This is because of their relatively small size and the tremendous distances from one star to another. Proxima Centauri, the closest star to the Sun, is 4.5 light-years away, so if it has planets ...
... Apart from those in our own solar system, no other planets can be detected by direct visual observation. This is because of their relatively small size and the tremendous distances from one star to another. Proxima Centauri, the closest star to the Sun, is 4.5 light-years away, so if it has planets ...
Stellar Parallax
... the Zenith and we also refer to the Meridian, a great circle through the Observer’s zenith and intersecting the horizon N. & S. • The Earth’s equator projected on to the celestial sphere establishes the celestial equator thus dividing it into N and S hemispheres. Projecting the Earth’s N and S poles ...
... the Zenith and we also refer to the Meridian, a great circle through the Observer’s zenith and intersecting the horizon N. & S. • The Earth’s equator projected on to the celestial sphere establishes the celestial equator thus dividing it into N and S hemispheres. Projecting the Earth’s N and S poles ...
Stefan-Boltzmann`s law Wien`s law
... ► light from distant galaxies/stars is red-shifted (which means they move away from us – as the red-shifting occurs in all direction, the universe must be expanding) ► existence of CMB ► the helium abundance in the universe which is about 25 % and is consistent with a hot beginning of the universe; ...
... ► light from distant galaxies/stars is red-shifted (which means they move away from us – as the red-shifting occurs in all direction, the universe must be expanding) ► existence of CMB ► the helium abundance in the universe which is about 25 % and is consistent with a hot beginning of the universe; ...
Wednesday, April 17 - Otterbein University
... • Any irregularly shaped cloud of gas and dust • May be bright or dark, depending on temperature • Types: – Emission (bright) Nebulae – Dark Nebulae – Reflection Nebulae ...
... • Any irregularly shaped cloud of gas and dust • May be bright or dark, depending on temperature • Types: – Emission (bright) Nebulae – Dark Nebulae – Reflection Nebulae ...
File - Mr. Gray`s Class
... similar to a globe of the sky. – It is an imaginary sphere where the sun, the moon, and all the other stars appear to be combined. ...
... similar to a globe of the sky. – It is an imaginary sphere where the sun, the moon, and all the other stars appear to be combined. ...
Cancer (constellation)
... Cancer is one of the twelve constellations of the zodiac. Its name is Latin for crab and it is commonly represented as such. Its symbol is (Unicode ♋). Cancer is small and its stars are faint. It lies between Gemini to the west and Leo to the east, Lynx to the north and Canis Minor and Hydra to the ...
... Cancer is one of the twelve constellations of the zodiac. Its name is Latin for crab and it is commonly represented as such. Its symbol is (Unicode ♋). Cancer is small and its stars are faint. It lies between Gemini to the west and Leo to the east, Lynx to the north and Canis Minor and Hydra to the ...
APOD Wall Calendar 2015 General: All Topics
... Explanation: The well known Pleiades star cluster is slowly destroying part of a passing cloud of gas and dust. The Pleiades is the brightest open cluster of stars on Earth's sky and can be seen from almost any northerly location with the unaided eye. The passing young dust cloud is thought to be pa ...
... Explanation: The well known Pleiades star cluster is slowly destroying part of a passing cloud of gas and dust. The Pleiades is the brightest open cluster of stars on Earth's sky and can be seen from almost any northerly location with the unaided eye. The passing young dust cloud is thought to be pa ...
4. Massive Stars and HII Regions
... very difficult. They are deeply embedded within dust clouds, they are usually very distant, they exclusively form in multiple systems. Furthermore: their Kelvin-Helmholtz timescale (maximum time a star can produce its entire luminosity from contraction – this is the T-Tauri phase of low mass stars) ...
... very difficult. They are deeply embedded within dust clouds, they are usually very distant, they exclusively form in multiple systems. Furthermore: their Kelvin-Helmholtz timescale (maximum time a star can produce its entire luminosity from contraction – this is the T-Tauri phase of low mass stars) ...
Photometry
... main sequence on your paper graph. Keep the y axes precisely parallel and over top one another. Seek a best fit for the central portion of the combined patterns. (The cool red stars in the lower right of your paper graph are quite scattered and may not fit very well.) Each star of the main sequence ...
... main sequence on your paper graph. Keep the y axes precisely parallel and over top one another. Seek a best fit for the central portion of the combined patterns. (The cool red stars in the lower right of your paper graph are quite scattered and may not fit very well.) Each star of the main sequence ...
The Characteristics of Stars
... The varying distances make it difficult to visually compare stars to determine which are emitting more light and which are emitting less. Although apparent magnitude values help us classify stars according to their observed brightness, they do not help us distinguish between stars that actually give ...
... The varying distances make it difficult to visually compare stars to determine which are emitting more light and which are emitting less. Although apparent magnitude values help us classify stars according to their observed brightness, they do not help us distinguish between stars that actually give ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.