exercise1.2b_Constellations

# exercise1.2b_Constellations - Student B The stars in a...

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Astronomy 103 Class Exercise – Constellations Part I : The star chart below shows the region of the sky containing the (unofficial) constellations Cubis and Cylindris. A legend is provided illustrating the magnitude symbols. Complete the requested annotations to the star chart and answer the related questions. 1) Estimate the magnitude of each star in Cubis. Label the value next to each star. 2) Label the 5 brightest stars in Cylindris with the appropriate Greek letter. 3) Can you identify a star that is in … a) neither Cubis nor Cylindris? b) both Cubis and Cylindris? 4) Why do you think astronomers of today make use of constellations? 5) Two student statements regarding the relationship between stars in a constellation are given below. Is either student (or are both students) largely correct? Student A : The stars in a constellation must be very near each other in space.

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Unformatted text preview: Student B : The stars in a constellation are in the same direction in the sky as seen from Earth. m=2 m=3 m=4 m=5 Legend m=1 m=6 Cubis Cylindris Part II : The diagram below crudely illustrates an observer and the stars of Cubis in space. 1) From the observer’s perspective what is the altitude (angle above the horizon plane) of α cubis? 2) From the observer’s perspective what is the altitude of β cubis? 3) Roughly estimate the angular separation in the sky between α cubis and β cubis by determining the difference in their altitudes. 4) How far away is α cubis? How far away is β cubis? Roughly estimate how far apart the two stars are. 5) Can you now do a better job of answering what the relationship is between the stars in a constellation? Restate the relationship. Earth Horizon Plane 10 pc 20 pc 15 pc 25 pc 5 pc 30 pc...
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exercise1.2b_Constellations - Student B The stars in a...

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