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O0 Question 5 12396 Lalande 21185 Gem 34 Ross 248 Cygni G51-15 Ross128 Wolf Procyon. Epsilon Eridani Anss 15 UV Cet Tau Ce Lacaile 8760 Lacaile 9052 Epsion Ind The figure above shows the distribution of the nearest stars to the Sun (including the Alpha Centauri triple star system, of which Proxima Centauri is a member). Our little patch of the Milky Way is quite a typical one. Examine this figure. What is the approximate distance between a star and its nearby neighbors? a) 0.01 pc b) 0.1 pc c) 1 pc d) 10 pc

O0 Question 5 12396 Lalande 21185 Gem 34 Ross 248 Cygni G51-15 Ross128 Wolf Procyon. Epsilon Eridani Anss 15 UV Cet Tau Ce Lacaile 8760 Lacaile 9052 Epsion Ind The figure above shows the distribution of the nearest stars to the Sun (including the Alpha Centauri triple star system, of which Proxima Centauri is a member). Our little patch of the Milky Way is quite a typical one. Examine this figure. What is the approximate distance between a star and its nearby neighbors? a) 0.01 pc b) 0.1 pc c) 1 pc d) 10 pc

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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Question 5 Σ 2398 Lalande 21185 Grm 34 Ross 248 61 Cygni G51-15 Wolf 359 Ross128 3pc Procyon BD+5°166 2 pc 1 pc SUN Barnard Epsilon Eridani Alpha Centauri Ross 154 UV Ceti Tau Ceti Luyten 789-6 Lacaille 8760 Lacaille 9352 Epsilon Indi The figure above shows the distribution of the nearest stars to the Sun (including the Alpha Centauri triple star system, of which Proxima Centauri is a member). Our little patch of the Milky Way is quite a typical one. Examine this figure. What is the approximate distance between a star and its nearby neighbors? а) 0.01 рс b) 0.1 рс c) 1 pc d) 10 pc Question 6 Betelgeuse, (typically pronounced "beetle juice," but some people insist it should be " bet el geese") is the bright red star in the constellation Orion (top left in picture below). Its parallax is 7.60x103 arcsec. Calculate the distance, in parsecs, of this star from the Earth. Show your steps. Question 7 In order to measure the large distances you found in the questions above, what baseline must astronomers be using? Question 8 Is the parallax for Betelgeuse larger or smaller than that of Proxima Centauri? What does that tell you about the general relationship between parallax and distance? Question 9 If a star has a parallax of 5.0x10° arcsec, what is its distance? How does your calculated distance compare to the size of our Milky Way Galaxy (about 30,000 pc)? The Large Magellanic Cloud is one of the closest galaxies to us at 50,000 pc away. If 5.0x10 arcsec is the smallest parallax we can measure, do you think trigonometric parallax is a useful technique for measuring distances to galaxies? Explain your answer.
Transcribed Image Text:Question 5 Σ 2398 Lalande 21185 Grm 34 Ross 248 61 Cygni G51-15 Wolf 359 Ross128 3pc Procyon BD+5°166 2 pc 1 pc SUN Barnard Epsilon Eridani Alpha Centauri Ross 154 UV Ceti Tau Ceti Luyten 789-6 Lacaille 8760 Lacaille 9352 Epsilon Indi The figure above shows the distribution of the nearest stars to the Sun (including the Alpha Centauri triple star system, of which Proxima Centauri is a member). Our little patch of the Milky Way is quite a typical one. Examine this figure. What is the approximate distance between a star and its nearby neighbors? а) 0.01 рс b) 0.1 рс c) 1 pc d) 10 pc Question 6 Betelgeuse, (typically pronounced "beetle juice," but some people insist it should be " bet el geese") is the bright red star in the constellation Orion (top left in picture below). Its parallax is 7.60x103 arcsec. Calculate the distance, in parsecs, of this star from the Earth. Show your steps. Question 7 In order to measure the large distances you found in the questions above, what baseline must astronomers be using? Question 8 Is the parallax for Betelgeuse larger or smaller than that of Proxima Centauri? What does that tell you about the general relationship between parallax and distance? Question 9 If a star has a parallax of 5.0x10° arcsec, what is its distance? How does your calculated distance compare to the size of our Milky Way Galaxy (about 30,000 pc)? The Large Magellanic Cloud is one of the closest galaxies to us at 50,000 pc away. If 5.0x10 arcsec is the smallest parallax we can measure, do you think trigonometric parallax is a useful technique for measuring distances to galaxies? Explain your answer.
Question 10 If a star is known to be 100pc away, what will its parallax be? Don't forget your units and to show your steps! Question 11 a) How would your measurement of parallax (using the orbit as the baseline) change if you were taking measurements from Jupiter? b) If you were taking measurements from Venus? c) How long would it take you to make the measurements? Hint: It takes Venus 0.62 years (7.4 months) to make one orbit around the Sun. Jupiter takes 11.86 years to make one orbit around the Sun. Question 12 If the Earth's orbit were very elliptical, what points of the orbit would you use to make the largest possible distance measurement? Oe Question 13 Look at the movies for Parallax (left movie) and for Retrograde Motion (right movie) below. 1997 Apr 25 No 20, 1996 12 00 am Note that in the parallax movie (left) the star being observed appears to move relative to the background stars while in the retrograde movie (right) the planet being observed appears to move relative to the background stars. How is the concept of parallax related to the concept of retrograde motion we discussed in the previous lab? Hint: Do the objects observed to move in parallax or retrograde really move that way?
Transcribed Image Text:Question 10 If a star is known to be 100pc away, what will its parallax be? Don't forget your units and to show your steps! Question 11 a) How would your measurement of parallax (using the orbit as the baseline) change if you were taking measurements from Jupiter? b) If you were taking measurements from Venus? c) How long would it take you to make the measurements? Hint: It takes Venus 0.62 years (7.4 months) to make one orbit around the Sun. Jupiter takes 11.86 years to make one orbit around the Sun. Question 12 If the Earth's orbit were very elliptical, what points of the orbit would you use to make the largest possible distance measurement? Oe Question 13 Look at the movies for Parallax (left movie) and for Retrograde Motion (right movie) below. 1997 Apr 25 No 20, 1996 12 00 am Note that in the parallax movie (left) the star being observed appears to move relative to the background stars while in the retrograde movie (right) the planet being observed appears to move relative to the background stars. How is the concept of parallax related to the concept of retrograde motion we discussed in the previous lab? Hint: Do the objects observed to move in parallax or retrograde really move that way?
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