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General Astronomy Stars and Galaxies

by: Stephan Kuvalis

General Astronomy Stars and Galaxies ASTR 1120

Marketplace > University of Colorado at Boulder > Astronomy > ASTR 1120 > General Astronomy Stars and Galaxies
Stephan Kuvalis

GPA 3.89

Rosalba Perna

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Rosalba Perna
Class Notes
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This 2 page Class Notes was uploaded by Stephan Kuvalis on Thursday October 29, 2015. The Class Notes belongs to ASTR 1120 at University of Colorado at Boulder taught by Rosalba Perna in Fall. Since its upload, it has received 21 views. For similar materials see /class/231951/astr-1120-university-of-colorado-at-boulder in Astronomy at University of Colorado at Boulder.


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Date Created: 10/29/15
ASTR 1120 STUDY GUIDE FOR MIDTERM III This guide is to aid you in preparing for the THIRD MIDTERM EXAM in class on Thursday April 24 which covers class lectures 1521 and the corresponding reading sections in Chapters 19202122 in The Cosmic Perspective and draws on the lecture material clicker questions and homeworks You should be familiar with THE BIG PICTURE and the SUMMARY OF KEY CONCEPTS for each topic in those chapters If you need help on this material please come to the RE VIE W SESSIONS on Monday April 21 and Wednesday April 23 Duane G125 600730pm given by Abhishek We also encourage you to seek out the TA Abhishek Keshav or Prof Rosalba Pema either during office hours or by appointment The exam will consist mainly of shortanswer questions multiple choice and truefalse which you will answer on a computer gradable sheet and two essay questions Please bring a number 2 pencil to the exam The exams are closed book closed notes and no calculators cell phones iPods etc You will NOT need to memorize constants You should however know how the various equations we discussed depend on the relevant variables Review TopicsQuestions p A What are the various phases of the recycling that occurs in the Milky Way Make sure you are familiar with all the phases of the cycle and how we observe them depending on their temperature How does the Milky Way look at various wavelengths Which wavelengths are mostly absorbed and which ones are not The cosmic distance ladder what are the various ways by which astronomers measure cosmic distances beyond what is possible with parallax Be sure to be familiar with the basic idea for each of these methods Remember the relation between apparent brightness luminosity and distance Where is the evidence for the presence of a supennassive black hole at the center of the Milky Way coming from Hubble s law what is it How was it discovered What are its important implications Structure of a galaxy know how to distinguish various galaxy types and be familiar with the main elements that make up a galaxy ie disk bulge etc What types of stars are more common in the disk of a spiral And what about ellipticals Which galaxies are bluer in color and which ones are redder Why How did galaxies form What are the main differences between the formation scenario of a spiral galaxy and of an elliptical galaxy How did astronomers at the beginning of the century learn that we are not at the center of the Milky Way Where is the solar system located with respect to the Galaxy center 10 Active Galactic Nuclei What are they Where do we find them What is responsible for the large output of energy that we observe J U A U 10 00 O 11 What is the local group Can you mention at least three other galaxies besides the Milky Way that are part of it 12 What is dark matter Where is the evidence for it coming from


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