ASTR 1120ASTR 1120General Astronomy:General Astronomy:Stars & GalaxiesStars & GalaxiesProf. Rosalba PernaTA: Thomas RogersTTh 11:00-12:15, Duane G1B30Outline of TodayOutline of Today’’s Classs Class• Course goals• Course overview• CourseinformationWhyWhy Are You Taking ThisAre You Taking ThisCourse??Course??A. Just because I need to satisfy my sciencecore requirement (no particular interest)B. Because of A. + my fascination with theUniverseC. I have satisfied my core requirements. I amtaking this course just out of interestD. Other reasonsTo develop a broad view ofwhat we know about theUniverseTo understand the forcesthat shape the Universeand its historyTo help you understandhow we figured all this outTo learn how science worksCourse GoalsCourse GoalsCourse Overview:Course Overview:What we shall studyWhat we shall study••What is our place in the Universe?What is our place in the Universe?Light Light (Electromagnetic(ElectromagneticRadiation)Radiation)••What is lightWhat is light??••How do How do we use itwe use it to tofind out what andfind out what andwhere things are?where things are?••Waves Waves vs vs particlesparticlesTelescopesTelescopes (Tools of the Trade)(Tools of the Trade)Our Nearest Star :Our Nearest Star : The Sun The SunStar in middleStar in middleof its lifeof its lifeSTARS STARS ofofvery manyvery manysizes andsizes andcolorscolorsEvolution path andEvolution path andcolor / brightness dependscolor / brightness dependssensitively on sensitively on MASSMASSSTELLARSTELLAR Birth and Life Birth and LifeSTAR DEATH:STAR DEATH: white dwarfs,white dwarfs,neutron stars and black holesneutron stars and black holesOUR GALAXY:OUR GALAXY: The Milky WayThe Milky Way200+ billion stars in the Milky Way200+ billion stars in the Milky WayExploring a Exploring a Universe ofUniverse ofGALAXIESGALAXIESBillion+ galaxies!Billion+ galaxies!GALACTIC evolutionGALACTIC evolutionGalaxy collisions, quasarsGalaxy collisions, quasarsDark matterDark matter, dark energy, dark energyand fate of universeand fate of universeBig Bang: Big Bang: The BeginningThe BeginningWhat isWhat is this course NOT?this course NOT?Astrology ! AstronomyWho should take this course?Who should take this course?••No prerequisites, aimedNo prerequisites, aimedat at non-science majorsnon-science majors••No lab creditNo lab credit••Moderate amounts ofModerate amounts ofquantitative workquantitative work(algebra)(algebra)••More quantitative courseMore quantitative course–– ASTR 1040 ASTR 1040Prior Prior astro astro course?course?Course InformationCourse InformationCOURSE WEB PAGE:COURSE WEB PAGE:http://amalfi.colorado.edu/~rosalba/astro1120/astro1120.htmlYou can findYou can findannouncements, readingannouncements, readingassignments, syllabus,assignments, syllabus,lecture notes and otherlecture notes and otheruseful things thereuseful things thereGradesGrades will be posted on will be posted onCULearnCULearnRequired TextRequired TextThe Cosmic PerspectiveThe Cosmic Perspectiveby Bennett et al.,by Bennett et al., 5 5thth edition editionIncludes:Includes:Access to textbook websiteAccess to textbook websitewww.masteringastronomywww.masteringastronomy.com.com,,Ebook Ebook (animations, etc), and(animations, etc), andSkyGazer SkyGazer planetarium software.planetarium software.You will need your You will need your ownown`masteringastronomy`masteringastronomy’’ account!account!Homeworks Homeworks requirerequire it itCourse ID: ASTR11202009AMore onMore on• Based off of the most widely adoptedphysics homework and tutorial system,MasteringPhysics• Uses a tutorial method in which you areguided to the solution of a multi-stepproblem– Wrong-answer feedback– On-demand hints• Homework takes more time but is worth it!– Studies have shown this system can increaseyour grade 5-7% (nearly a whole letter grade!!)How do you learn best?How do you learn best?A. Listening to lecturesB. Reading the textbookC. Doing HomeworkD. Discussing withfriends/classmatesE. All of the aboveHow do you learn best?How do you learn best?A. Listening to lecturesB. Reading the textbookC. Doing HomeworkD. Discussing withfriends/classmatesE. All of the aboveHow manyHow many hours per weekhours per week(outside of lecture)(outside of lecture) should youshould youneed to work to get an A in thisneed to work to get an A in thiscourse?course?A. <2 hoursB. 2-4 hoursC. 4-6 hoursD. 6-9 hoursE. 9+ hoursHow manyHow many hours per weekhours per week(outside of lecture)(outside of lecture) should youshould youneed to work to get an A in thisneed to work to get an A in thiscourse?course?A. <2 hoursB. 2-4 hoursC. 4-6 hoursD. 6-9 hoursA. 9+ hoursGRADINGGRADING3 in-class midterms (m/c and short essay) : 3 x 20% (lowest score dropped - tot=40%)Homework assignments (online from MA): 20%(lowest score dropped)Final exam: 30%Clickers: 10% (Drop 4 lowest scored days)Extra Credit Observatory Nights: 3% (max)No make-up midterm dates!READ ALL THE INFO ON THE COURSE WEBPAGEClickersClickers• Required-- bring to each class!• Register your clicker to your name• Used for reading quizzes, in-class discussionquestions, feedback - favors peer learningfavors peer learning• Write your name on a piece of tape on the back ofyour clicker!More on clickersMore on clickers• Credit starts next week• Graded 2 pts for correctanswer, 1pt for wrong answer, 0 pts for no answer• Your grades available onlineweekly• 4 “free clicker” days• Buy and register beforeFriday! If you’re using an oldclicker, change the batteriesNOW!Important classroom policiesImportant classroom policies••Working together on homework is encouragedWorking together on homework is encouraged,BUTBUT:: Your answers mustYour answers must reflect your work onlyreflect your work only••Do not disturb the class by talking with yourDo not disturb the class by talking with your neighbors, unless class discussion is invitedneighbors, unless class discussion is invited••Using another personUsing another person’’s clicker is cheatings clicker is cheating••Students are expected to follow the CU Honor Code andStudents are expected to follow the CU Honor Code andbehave with courtesy to the instructors and theirbehave with courtesy to the instructors and theirclassmatesclassmatesHow to succeed in thisHow to succeed in thiscoursecourse• PUT IN THE TIME: 3 credits at CU = 6-9hours outside of theclassroom••Read the