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Download Surface Environments of the Planets o+ our Solar System
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Properties of the Stars Introduction We have begun our investigation of stars. In this lab, you will use online catalogs to determine the physical characteristics of stars. You will also be asked to locate and identify some non-stellar objects. You may begin by trying the website at http://www.stellar-database.com/ In this exercise, you will also become more familiar with the various naming systems for stars. Remember, only the brightest stars which form our constellations have been given proper names. There are thousands of stars that have either Bayer Greek letter names, and even more that have Flamsteed number names. Here is a short list of some of the stellar properties we have talked about thus far.: Distance: in either light years or parsecs Magnitude: both apparent and absolute Stellar Parallax: in seconds of arc per year Proper Motion: also in seconds of arc per year Radial Velocity: in km per second You have been two stars of your very own to research. One is a bright star, easily visible even in Bloomfield Hills. The second is a nearby star, more likely than not invisible to the unaided eye. You will also answer some questions about non-stellar objects such as nebulae, galaxies and star clusters. Name ___________________________________ Questions My bright star is ___________________ My nearby star is ___________________ 1. What is the apparent magnitude of your bright star? Where did you find that information? 2. How far away is your bright star? _________________________ ___________________________________________ __________________________________ Where did you find that information? ___________________________________________ 3. Why do most nearby stars not have proper names? 4. In which constellation is your nearby star? _________________________________________ How did you find that information? ___________________________________________ 5. What is the annual proper motion of your nearby star in milliseconds of arc per year? __________________________________ 6. What is the radial velocity of your bright star? _________________________________ is this star moving toward us or away from us? ______________________________ 7. What type of object is NGC 2392? __________________________________ 8. What is the apparent magnitude od IC434? 9. What is the distance to the Hercules globular star cluster? 10. How bright is the Andromeda Galaxy? 11. What type of object is the Eskimo nebula? ____________________ ______________________ ____________________________________ _______________________________