Stars
... The Blue Supergiants will begin to burn up all of the hydrogen that they have after a few million years. When this happens, the outer shell of the star begins to expand. It grows to about triple the size that it currently is. The Blue Supergiant now becomes a Supergiant. Supergiants are orange/yello ...
... The Blue Supergiants will begin to burn up all of the hydrogen that they have after a few million years. When this happens, the outer shell of the star begins to expand. It grows to about triple the size that it currently is. The Blue Supergiant now becomes a Supergiant. Supergiants are orange/yello ...
Lecture 16
... A later scheme, called the B-V Index, classed stars according to a logarithmic ratio of the peak amount of radiation in the blue and violet colors. The current scheme is to class stars according to color in a way which is more or less logarithmically proportional to temperature. In this scheme stars ...
... A later scheme, called the B-V Index, classed stars according to a logarithmic ratio of the peak amount of radiation in the blue and violet colors. The current scheme is to class stars according to color in a way which is more or less logarithmically proportional to temperature. In this scheme stars ...
The Stars
... HR Diagram are cool but extremely bright stars. • These are the supergiants, stars that some day will supernova. • They eventually might become black holes. ...
... HR Diagram are cool but extremely bright stars. • These are the supergiants, stars that some day will supernova. • They eventually might become black holes. ...
Note Taking Guide #2: Characteristics of Stars Welcome back! As
... from Earth. The closer a star is to Erath, the more light it appears to give off. Think of our sun versus Alpha Centauri; the sun appears to give off much more light, even though the two stars are actually very similar in size and temperature. A star’s absolute magnitude is how much light a star wou ...
... from Earth. The closer a star is to Erath, the more light it appears to give off. Think of our sun versus Alpha Centauri; the sun appears to give off much more light, even though the two stars are actually very similar in size and temperature. A star’s absolute magnitude is how much light a star wou ...
THE HR DIAGRAM
... the expansion the star cools considerably. A low mass star that was a yellow or orange main sequence star evolves to a red giant during this expansion period. It is red because it is cool, and it is a giant because it has such a large radius. Similarly, a high mass blue or white main sequence star e ...
... the expansion the star cools considerably. A low mass star that was a yellow or orange main sequence star evolves to a red giant during this expansion period. It is red because it is cool, and it is a giant because it has such a large radius. Similarly, a high mass blue or white main sequence star e ...
File - SMIC Physics
... • ~ 1 trillion stars • Stars (including Sun) orbit around the core. It takes 225 million years for the Sun to make 1 round around the core. • Has a supermassive black hole at its center. It is about 2.5 million times as massive as the Sun. ...
... • ~ 1 trillion stars • Stars (including Sun) orbit around the core. It takes 225 million years for the Sun to make 1 round around the core. • Has a supermassive black hole at its center. It is about 2.5 million times as massive as the Sun. ...
Light as a Wave (1) Distances to Stars
... intrinsic brightness or luminosity (L) and inversely proportional to the square of the distance (d): ...
... intrinsic brightness or luminosity (L) and inversely proportional to the square of the distance (d): ...
spectral-type
... If we want learn about the number of absorbers for a given element (say, calcium, iron, gold, etc) then we need to know the temperature of the star. If we know the temperature we can account for its effect and… The line strength will only depend on the Number of Absorbers. ...
... If we want learn about the number of absorbers for a given element (say, calcium, iron, gold, etc) then we need to know the temperature of the star. If we know the temperature we can account for its effect and… The line strength will only depend on the Number of Absorbers. ...
Eclipsing Binaries
... If the binary stars are eclipsing, then it is guaranteed that we are in the orbital plane. This means that the maximum radial velocity on the velocity plot gives us the orbital velocity. Now we have “a” and we have “P”. We can get rid of one of the “M”s because we know how they are related. ...
... If the binary stars are eclipsing, then it is guaranteed that we are in the orbital plane. This means that the maximum radial velocity on the velocity plot gives us the orbital velocity. Now we have “a” and we have “P”. We can get rid of one of the “M”s because we know how they are related. ...
WebQuest-The-Life-Cycle-of-Stars-1
... and see pictures of the protostars of M16: The Eagle Nebula and other nebulae on this page. Continue by reading up on Main Sequence Stars and find out how our sun compares in mass to other stars. 1) Compare the mass of our sun to Sirius? To Proxima Centauri? 2) Based on its mass, will our sun be aro ...
... and see pictures of the protostars of M16: The Eagle Nebula and other nebulae on this page. Continue by reading up on Main Sequence Stars and find out how our sun compares in mass to other stars. 1) Compare the mass of our sun to Sirius? To Proxima Centauri? 2) Based on its mass, will our sun be aro ...
Stars
... compacted into a dense shell of neutrons. If the remaining mass of the star is more than about three times that of the Sun, it will collapse so completely that it will literally disappear from the universe. What is left behind is an intense region of gravity called a black hole ...
... compacted into a dense shell of neutrons. If the remaining mass of the star is more than about three times that of the Sun, it will collapse so completely that it will literally disappear from the universe. What is left behind is an intense region of gravity called a black hole ...
Death of Low Mass Stars 8 Solar Masses or less
... orbit about each other held together by their mutual gravitation. MOST “stars” are binary systems. Our closest star is a 3 star system (centauri system). ...
... orbit about each other held together by their mutual gravitation. MOST “stars” are binary systems. Our closest star is a 3 star system (centauri system). ...
Chapter 2: The Sky
... • If the Earth did not rotate about its axis, could we define a celestial sphere as we do now? • Could we even define a set of poles and equator? • What is the difference between a constellation and an asterism? Examples? • What does the word apparent mean in the context of “apparent visual magnitud ...
... • If the Earth did not rotate about its axis, could we define a celestial sphere as we do now? • Could we even define a set of poles and equator? • What is the difference between a constellation and an asterism? Examples? • What does the word apparent mean in the context of “apparent visual magnitud ...
Document
... • We define our age by trips around the Sun. • How many trips of Sun around Milky Way? R = 8.5 kpc V = 220km/s P = 2.5x108 yrs ...
... • We define our age by trips around the Sun. • How many trips of Sun around Milky Way? R = 8.5 kpc V = 220km/s P = 2.5x108 yrs ...
The Milky Way
... • We define our age by trips around the Sun. • How many trips of Sun around Milky Way? R = 8.5 kpc V = 220km/s P = 2.5x108 yrs ...
... • We define our age by trips around the Sun. • How many trips of Sun around Milky Way? R = 8.5 kpc V = 220km/s P = 2.5x108 yrs ...
Physics 1025: Lecture 18 Stellar Magnitudes, Absolute Magnitudes
... For example, consider two stars differing in magnitude by 13 magnitudes (e.g. m 1 = 20 and m2 = 7) magnitude diff. Δm = 13 = 5 + 5 +3 so brightness ratio = (100) x (100) x 16 = 160,000 and thus the m = 7 star is 160,000 times brighter than the m = 20 star. Now there are problems with visual magnitud ...
... For example, consider two stars differing in magnitude by 13 magnitudes (e.g. m 1 = 20 and m2 = 7) magnitude diff. Δm = 13 = 5 + 5 +3 so brightness ratio = (100) x (100) x 16 = 160,000 and thus the m = 7 star is 160,000 times brighter than the m = 20 star. Now there are problems with visual magnitud ...
Planisphere Exercise
... located just beneath the brass fastener that holds the star wheel to the frame of the planisphere. As the night progresses, which way do the stars appear to move around the North Star (which is hidden under the brass fastener) – clockwise or counterclockwise? As the night progresses, how do stars ap ...
... located just beneath the brass fastener that holds the star wheel to the frame of the planisphere. As the night progresses, which way do the stars appear to move around the North Star (which is hidden under the brass fastener) – clockwise or counterclockwise? As the night progresses, how do stars ap ...
Stars and Galaxies
... 1. when this occurs the core contracts in upon itself and becomes very hot causing the outer layers of the star to expand away from the core. 2. now this radiation and heat starts fusion in the star’s outer layers causing even greater expansion 3. as the expansion continues the star becomes a red-gi ...
... 1. when this occurs the core contracts in upon itself and becomes very hot causing the outer layers of the star to expand away from the core. 2. now this radiation and heat starts fusion in the star’s outer layers causing even greater expansion 3. as the expansion continues the star becomes a red-gi ...
HR Diagram - Geneva 304
... Stars Star Color and Temperature 1. Stars give off _____ wavelengths of electromagnetic radiation. 2. What is the peak wavelength of a star? 3. A star that is _____ in color is hotter than a yellow star. This means that stars with _____ have a hotter temperature. 4. Stars are referred to as _____ be ...
... Stars Star Color and Temperature 1. Stars give off _____ wavelengths of electromagnetic radiation. 2. What is the peak wavelength of a star? 3. A star that is _____ in color is hotter than a yellow star. This means that stars with _____ have a hotter temperature. 4. Stars are referred to as _____ be ...
The coolest White Dwarf— older than the age of the universe?
... its life as a ball of compact degenerate electron gas or a White Dwarf (WD). It may begin this stage with a very high temperature, say 50,000 K and it steadily cools over time following a well-known cooling rate. Eventually this object will cool so much that it will become a ‘black dwarf’ and will b ...
... its life as a ball of compact degenerate electron gas or a White Dwarf (WD). It may begin this stage with a very high temperature, say 50,000 K and it steadily cools over time following a well-known cooling rate. Eventually this object will cool so much that it will become a ‘black dwarf’ and will b ...
LEO - nina`s Senior project
... orbital period of 500 years. A planet was discovered in the orbit of the primary star in November 2009.The Gamma Leonis system has a combined apparent visual magnitude of 1.98 and is approximately 130 light years distant from the Sun. It is easy to observe in a small telescope under good conditions ...
... orbital period of 500 years. A planet was discovered in the orbit of the primary star in November 2009.The Gamma Leonis system has a combined apparent visual magnitude of 1.98 and is approximately 130 light years distant from the Sun. It is easy to observe in a small telescope under good conditions ...
printer-friendly sample test questions
... A. is visible during daytime, while other stars are visible only at night. B. has a much hotter temperature than most stars, making it glow brighter. C. emits yellow light, which is several times brighter than other colors. D. is far closer than any other star, which makes it look the brightest. ...
... A. is visible during daytime, while other stars are visible only at night. B. has a much hotter temperature than most stars, making it glow brighter. C. emits yellow light, which is several times brighter than other colors. D. is far closer than any other star, which makes it look the brightest. ...
Name: ____________ Period: ______ STAR BIOGRAPHY Name of
... Color and Temperature of Star Spectral class: The color of the star. Hot stars are bluer, cool stars are redder. In descending order from hottest (most blue) to coolest (most red), the spectral classes are: O B A F G K M. Each spectral class letter can be subdivided into ten smaller steps or gradat ...
... Color and Temperature of Star Spectral class: The color of the star. Hot stars are bluer, cool stars are redder. In descending order from hottest (most blue) to coolest (most red), the spectral classes are: O B A F G K M. Each spectral class letter can be subdivided into ten smaller steps or gradat ...
Clarice - Science A 2 Z
... that they touch • Ursa Major is known as the bear in many cultures. The bear of the Native Americans had no tail, but rather ...
... that they touch • Ursa Major is known as the bear in many cultures. The bear of the Native Americans had no tail, but rather ...