Teacher Guide Lives of Stars
... Page the photon reporter: an energetic but sensitive photon journalist who is interviewing the Sun for her column in the Local Group Times. Sol the white dwarf: a kind and friendly star, our Sun at the end of his life. Sol used to be a yellow star. This interview takes place about 5 billion years in ...
... Page the photon reporter: an energetic but sensitive photon journalist who is interviewing the Sun for her column in the Local Group Times. Sol the white dwarf: a kind and friendly star, our Sun at the end of his life. Sol used to be a yellow star. This interview takes place about 5 billion years in ...
Life Cycle of Stars
... The term „double star“ is used for binary star systems, but also for stars that optically just appear close to each other. Binary star systems are very important references for astronomers: Their orbits allow to determine their masses, which again allows to calculate radius and density. Resulting ma ...
... The term „double star“ is used for binary star systems, but also for stars that optically just appear close to each other. Binary star systems are very important references for astronomers: Their orbits allow to determine their masses, which again allows to calculate radius and density. Resulting ma ...
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... moving apart so rapidly that their gravitational attraction for one another cannot pull them into orbit about one another ...
... moving apart so rapidly that their gravitational attraction for one another cannot pull them into orbit about one another ...
Teaching ideas for Option E, Astrophysics
... The magnitude scale is confusing to students when they first meet it, so it is important to give many examples to make sure students understand that the smaller the magnitude the brighter the star appears to be. Students will always ask where the letters OBAFGKM for spectral classes come from. There ...
... The magnitude scale is confusing to students when they first meet it, so it is important to give many examples to make sure students understand that the smaller the magnitude the brighter the star appears to be. Students will always ask where the letters OBAFGKM for spectral classes come from. There ...
The Milky Way * A Classic Galaxy
... • Pop I,II show MW formed spheroid first, then disk more gradually. • Hubble discovered Cepheids in Andromeda Nebula, so it’s a Galaxy, and we must be one too • Star formation happening in disk right through today • 10 million solar mass Giant black hole in nucleus of our Galaxy, evidence by rapid o ...
... • Pop I,II show MW formed spheroid first, then disk more gradually. • Hubble discovered Cepheids in Andromeda Nebula, so it’s a Galaxy, and we must be one too • Star formation happening in disk right through today • 10 million solar mass Giant black hole in nucleus of our Galaxy, evidence by rapid o ...
Ch. S1 - Relativity Group
... says, "you see, I as an artist can see how beautiful this is, but you as a scientist, oh, take this all apart and it becomes a dull thing." And I think he’s kind of nutty. First of all, the beauty that he sees is available to other people and to me, too, I believe, although I might not be quite as r ...
... says, "you see, I as an artist can see how beautiful this is, but you as a scientist, oh, take this all apart and it becomes a dull thing." And I think he’s kind of nutty. First of all, the beauty that he sees is available to other people and to me, too, I believe, although I might not be quite as r ...
Document
... as the distance increases, the brightness decreases since the light is spread over a bigger area But, stars are at different distances from the Earth (d) L b 4d 2 ...
... as the distance increases, the brightness decreases since the light is spread over a bigger area But, stars are at different distances from the Earth (d) L b 4d 2 ...
Last time: Star Clusters (sec. 19.6)
... depth, so hottest in center nuclear reactions H He “core H-burning”. Two nuclear reaction procceses: proton-proton (dominates in stars ~ sun’s mass and lower), and CNO cycle (dominates in stars more massive than sun; see More Precisely 20-1). Stable, lasts most of star’s lifetime. (Will explain ...
... depth, so hottest in center nuclear reactions H He “core H-burning”. Two nuclear reaction procceses: proton-proton (dominates in stars ~ sun’s mass and lower), and CNO cycle (dominates in stars more massive than sun; see More Precisely 20-1). Stable, lasts most of star’s lifetime. (Will explain ...
Measuring the Properties of Stars
... being radiated by the surface of a particular star. Astronomers call this power Luminosity, and it has dependancy on two properties of a star; it’s surface size (4R2) and its surface temperature (T). These are direct relationships. An increase in either of the properties, results in an increase in ...
... being radiated by the surface of a particular star. Astronomers call this power Luminosity, and it has dependancy on two properties of a star; it’s surface size (4R2) and its surface temperature (T). These are direct relationships. An increase in either of the properties, results in an increase in ...
Jeopardy - Cloudfront.net
... a. absorption spectrum of elements to the emission spectra of a star b. continuous spectrum of elements to the emission spectra of a star c. emission spectrum of elements to the absorption spectra of a star d. emission spectrum of elements to continuous spectra of a star ...
... a. absorption spectrum of elements to the emission spectra of a star b. continuous spectrum of elements to the emission spectra of a star c. emission spectrum of elements to the absorption spectra of a star d. emission spectrum of elements to continuous spectra of a star ...
OBAFGKM
... to star’s surface temperature ? • How do we measure brightness of stars: and why apparent vs absolute magnitudes? ...
... to star’s surface temperature ? • How do we measure brightness of stars: and why apparent vs absolute magnitudes? ...
ppt - Astronomy & Physics
... spread over sphere of radius R: energy falling on each unit area of that sphere is Flux or Apparent Brightness, units of W/m2 : ...
... spread over sphere of radius R: energy falling on each unit area of that sphere is Flux or Apparent Brightness, units of W/m2 : ...
Exercise 4
... radiation curve. On the curve, there is a peak which shifts to shorter wavelength when the temperature of the blackbody increases. From the position of the peak, astronomers can deduce the surface temperature of the star. In general, the spectra of hot stars peak at shorter wavelengths and therefore ...
... radiation curve. On the curve, there is a peak which shifts to shorter wavelength when the temperature of the blackbody increases. From the position of the peak, astronomers can deduce the surface temperature of the star. In general, the spectra of hot stars peak at shorter wavelengths and therefore ...
Cassiopeia (constellation)
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is easily recognizable due to its distinctive 'M' shape when in upper culmination but in higher northern locations when near lower culminations in spring and summer it has a 'W' shape, formed by five bright stars. It is bordered by Andromeda to the south, Perseus to the southeast, and Cepheus to the north. It is opposite the Big Dipper.In northern locations above 34ºN latitude it is visible year-round and in the (sub)tropics it can be seen at its clearest from September to early November in its characteristic 'M' shape. Even in low southern latitudes below 25ºS is can be seen low in the North.