Properties of stars
... off 1000 times more light than Rigel!! SO..If Spica is giving off more light, why would it appear dimmer in the sky here at Earth? ...
... off 1000 times more light than Rigel!! SO..If Spica is giving off more light, why would it appear dimmer in the sky here at Earth? ...
Astronomy Study Guide #2
... 05. What two parameters does the brightness of a star depend on? 06. What is the stellar spectral classification sequence? 07. What do studies of binary stars help us learn? 08. Solar granulation is evidence for what aspect of energy transport? 09. In traveling from the center of the sun to the top ...
... 05. What two parameters does the brightness of a star depend on? 06. What is the stellar spectral classification sequence? 07. What do studies of binary stars help us learn? 08. Solar granulation is evidence for what aspect of energy transport? 09. In traveling from the center of the sun to the top ...
Support worksheet – Topic 3 Questions
... Suggest why the stellar parallax method is limited to distances of about 300 pc for Earth-based telescopes but can be extended to 1000 pc for satellite-based telescopes. ...
... Suggest why the stellar parallax method is limited to distances of about 300 pc for Earth-based telescopes but can be extended to 1000 pc for satellite-based telescopes. ...
SAMPLE TEST: Stars and Galaxies Multiple Choice Identify the letter
... a. the wavelength of light emitted by the star b. the color of the star c. the distance between the star and Earth d. binary star systems 4. Stars of which color have the coolest surface temperature? a. red c. yellow b. orange d. blue 5. A light-year is approximately ____. a. 9.5 trillion kilometers ...
... a. the wavelength of light emitted by the star b. the color of the star c. the distance between the star and Earth d. binary star systems 4. Stars of which color have the coolest surface temperature? a. red c. yellow b. orange d. blue 5. A light-year is approximately ____. a. 9.5 trillion kilometers ...
Summary: Stellar Distances
... Interstellar dust makes stars look redder over long distances Temperatures can also be inferred from the appearance of a star’s spectrum - the pattern of spectral lines. This spectral typing is not affected by interstellar dust. Surface temperatures of stars almost all lie between 40,000°K for the “ ...
... Interstellar dust makes stars look redder over long distances Temperatures can also be inferred from the appearance of a star’s spectrum - the pattern of spectral lines. This spectral typing is not affected by interstellar dust. Surface temperatures of stars almost all lie between 40,000°K for the “ ...
Problem set 2
... As experiments show, on Oct. 1 the sun subtends an angular diameter of 32 arcmin. (a) Calculate the solid angle Ω⊙ subtended by the sun, in steradians. (b) Show that the flux (in W m−2 s−1 or its cgs equivalent) of solar radiation on earth is F = I(T⊙ ) · Ω⊙ with T⊙ = 5777 K, and calculate this valu ...
... As experiments show, on Oct. 1 the sun subtends an angular diameter of 32 arcmin. (a) Calculate the solid angle Ω⊙ subtended by the sun, in steradians. (b) Show that the flux (in W m−2 s−1 or its cgs equivalent) of solar radiation on earth is F = I(T⊙ ) · Ω⊙ with T⊙ = 5777 K, and calculate this valu ...
Microsoft Power Point version
... Deneb has an Absolute visual magnitude of -8.73 (this is about the same brightness as the quarter moon---but at 32.6 light years away!) Using the weird equation, the distance to deneb can be calculated: 2500 light years (M – m = 5 – 5log(d)) One last obvious question: How did we ever know the Absolu ...
... Deneb has an Absolute visual magnitude of -8.73 (this is about the same brightness as the quarter moon---but at 32.6 light years away!) Using the weird equation, the distance to deneb can be calculated: 2500 light years (M – m = 5 – 5log(d)) One last obvious question: How did we ever know the Absolu ...
Document
... • Parallax (only practically achievable for very nearby stars) • Expansion Parallax (watch something expand with known speed) the Greeks rejected the heliocentric theory because they did not • Example: detect stellar parallax. Tycho later realized that this is because stars are too far away to measu ...
... • Parallax (only practically achievable for very nearby stars) • Expansion Parallax (watch something expand with known speed) the Greeks rejected the heliocentric theory because they did not • Example: detect stellar parallax. Tycho later realized that this is because stars are too far away to measu ...
Document
... b. They show where less light is absorbed by a star’s atmosphere. c. They are the emission lines of an electrically charged element. d. They show where a star has black spots. _____ 10. What objects are formed from the materials in the core of a supernova? a. black holes and supergiants b. red giant ...
... b. They show where less light is absorbed by a star’s atmosphere. c. They are the emission lines of an electrically charged element. d. They show where a star has black spots. _____ 10. What objects are formed from the materials in the core of a supernova? a. black holes and supergiants b. red giant ...
a star is born reading
... quickly than red ones. They are also brighter. They are like the spotlights in the dark auditorium. Yellow stars have a shorter life span than red ones, only ten billion years or so. Our Sun is about five billion years old. Toward the end of its life, it will become much larger. It will swallow up t ...
... quickly than red ones. They are also brighter. They are like the spotlights in the dark auditorium. Yellow stars have a shorter life span than red ones, only ten billion years or so. Our Sun is about five billion years old. Toward the end of its life, it will become much larger. It will swallow up t ...
Star Gazing
... region to the right of the sun (spring sunset). Use fist method (arm outstretched) to measure 30o (3 fist lengths) to the right/north of sunset now. • Specific directions on website for what you need to write down. • Turn in the picture with details listed in the ...
... region to the right of the sun (spring sunset). Use fist method (arm outstretched) to measure 30o (3 fist lengths) to the right/north of sunset now. • Specific directions on website for what you need to write down. • Turn in the picture with details listed in the ...
Astro 1 & 100 Levine Homework Stars Name:____________________________
... Hottest ______ ______ ______ ______ ______ ______ Coolest Or, all have the same temperature ______________ Page 1 ! of !4 ...
... Hottest ______ ______ ______ ______ ______ ______ Coolest Or, all have the same temperature ______________ Page 1 ! of !4 ...
stars
... it starts to burn fuel and glow. • The star burns out it’s fuel it glows less and begins to expand. This star is called a Red Giant. • The star will eventually collapse and explode this is know as the Supernova stage.(only the ones much bigger than our sun – 8 x or more) • Depending on it’s size it ...
... it starts to burn fuel and glow. • The star burns out it’s fuel it glows less and begins to expand. This star is called a Red Giant. • The star will eventually collapse and explode this is know as the Supernova stage.(only the ones much bigger than our sun – 8 x or more) • Depending on it’s size it ...
File - Mr. Goodyear Astronomy
... hydrogen in core of star decreases and helium in core rises, the star starts to become unstable and equilibrium breaks down, gravity takes over – causing greater pressure on core and causes helium flash or fusion (new energy He C ) Star grows: increase energy overcomes gravity, star moves off the ma ...
... hydrogen in core of star decreases and helium in core rises, the star starts to become unstable and equilibrium breaks down, gravity takes over – causing greater pressure on core and causes helium flash or fusion (new energy He C ) Star grows: increase energy overcomes gravity, star moves off the ma ...
Chapter 25 - Notes Super Size
... • Spiral galaxy that is about 100,000 _________________ across. • Out solar system is located about half-way out on one of the spiral arms. • Like many galaxies, the Milky Way has a super massive Black Hole at its _________________. Origin of _________________ • _________________ State Theory- the U ...
... • Spiral galaxy that is about 100,000 _________________ across. • Out solar system is located about half-way out on one of the spiral arms. • Like many galaxies, the Milky Way has a super massive Black Hole at its _________________. Origin of _________________ • _________________ State Theory- the U ...
Distance measurement in astronomy
... Cepheid variables are one particular type of variable star (one whose brightness changes with time) called after delta Cephei, the first star of this type to be observed. The variation in brightness of this star was discovered by John Goodricke in 1784. Goodricke lived in York and was a promising yo ...
... Cepheid variables are one particular type of variable star (one whose brightness changes with time) called after delta Cephei, the first star of this type to be observed. The variation in brightness of this star was discovered by John Goodricke in 1784. Goodricke lived in York and was a promising yo ...
Calculating_Main_Sequence_Lifetimes_StudentGuide
... stars having larger magnitudes. Don’t confuse the relative magnitude with absolute magnitude. The relative magnitude measures the brightness of a star as it appears in the sky and it depends on the brightness and on the distance; if we put a star at the distance of 10 Parsec (33 year light), its mag ...
... stars having larger magnitudes. Don’t confuse the relative magnitude with absolute magnitude. The relative magnitude measures the brightness of a star as it appears in the sky and it depends on the brightness and on the distance; if we put a star at the distance of 10 Parsec (33 year light), its mag ...
White Dwarfs and the age of the Universe
... • if we know the temperature and luminosity of a white dwarf, we know its size • if we know temperature, luminosity, and size now, we know the rate at which it is cooling today ...
... • if we know the temperature and luminosity of a white dwarf, we know its size • if we know temperature, luminosity, and size now, we know the rate at which it is cooling today ...
this article as a PDF
... Hunter. Another name for Betelgeuse is Alpha Orionis, indicating it is the brightest star in the winter constellation of Orion. However, Rigel (Beta Orionis) is actually brighter. The misclassification happened because Betelgeuse is a variable star (a star that changes brightness over time) and it m ...
... Hunter. Another name for Betelgeuse is Alpha Orionis, indicating it is the brightest star in the winter constellation of Orion. However, Rigel (Beta Orionis) is actually brighter. The misclassification happened because Betelgeuse is a variable star (a star that changes brightness over time) and it m ...
Measuring the Stars
... Spectroscopic parallax: Has nothing to do with parallax, but does use spectroscopy in finding the distance to a star. 1. Measure the star’s apparent magnitude and ...
... Spectroscopic parallax: Has nothing to do with parallax, but does use spectroscopy in finding the distance to a star. 1. Measure the star’s apparent magnitude and ...
Stars
... Life Cycle of Stars • The matter inside the star will be compressed so tightly that its atoms are 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 univ ...
... Life Cycle of Stars • The matter inside the star will be compressed so tightly that its atoms are 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 univ ...
PPT - Mr.E Science
... Light from a star is passed through a prism/ spectrograph and the fingerprint observed is compared to known element fingerprints. We now know what the star is made of We next compare to see if there is a red or blue shift in the spectrum to see if the star is coming towards us or going away from us. ...
... Light from a star is passed through a prism/ spectrograph and the fingerprint observed is compared to known element fingerprints. We now know what the star is made of We next compare to see if there is a red or blue shift in the spectrum to see if the star is coming towards us or going away from us. ...
Mr. Scharff
... Introduction. The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were al the same distance away. Rather than speak of the ...
... Introduction. The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were al the same distance away. Rather than speak of the ...