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ASTR 1040 ASTR 1040 AccelAccel Intro Astronomy 2: Intro Astronomy 2: Stars & GalaxiesStars & Galaxies

Spring 2007Spring 2007

Prof. Prof. JuriJuri ToomreToomreTAs: Nick Featherstone & TAs: Nick Featherstone & JuthikaJuthika

KharghariaKharghariaTR 11am, Duane GTR 11am, Duane G--131 + F recitations (E131 + F recitations (E--126: 2pm, 3pm)126: 2pm, 3pm)

Lecture 1 16 Jan 07Lecture 1 16 Jan 07

Detailed course syllabus now being passed outDetailed course syllabus now being passed outzeus.colorado.edu/astr1040zeus.colorado.edu/astr1040--toomretoomre

Who should take this course?Who should take this course?

Prerequisites: Prerequisites: 1030 + calculus 11030 + calculus 1

Moderate amounts of Moderate amounts of quantitative workquantitative work(algebra + physics)(algebra + physics)

Course InformationCourse InformationCOURSE WEB PAGE:COURSE WEB PAGE:zeus.colorado.eduzeus.colorado.edu/ astr1040/ astr1040--toomretoomre

Can find info on all Can find info on all assigmentsassigments(passed out in class), course (passed out in class), course calendar, calendar, lecture noteslecture notes, and other , and other links links

GradingGrading is shown on is shown on CULearnCULearn

Required TextRequired Text

The Cosmic PerspectiveThe Cosmic Perspectiveby Bennett et al., 4by Bennett et al., 4thth ed, 2006)ed, 2006)

Includes:Includes:Access to textbook websiteAccess to textbook website

www.masteringastronomy.comwww.masteringastronomy.com

You will need your You will need your ownown account!account!Most Most homeworkshomeworks require itrequire it

How to succeed in this courseHow to succeed in this course•• GOT TO GOT TO PUT IN THE TIMEPUT IN THE TIME::

4 credits at CU 4 credits at CU 6 to 10 hours outside of 6 to 10 hours outside of classroom (no kidding) classroom (no kidding)

•• Read sections Read sections BEFOREBEFOREdiscussion in class discussion in class (secrets of memory)(secrets of memory)

•• Come see us during Come see us during office hours!office hours!

Planetarium sessionsPlanetarium sessions•• At least two class meetings will be at At least two class meetings will be at

Fiske Planetarium on campusFiske Planetarium on campus

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Observatory NightsObservatory Nights•• Starting nextStarting next Mon 22 Mon 22

JanJan at 7pm, then at 7pm, then about every 2 weeks about every 2 weeks (6 in all) (6 in all) –– signup for signup for two nights,two nights, one in one in group A, another in Bgroup A, another in B

•• SommersSommers--Bausch Bausch ObservatoryObservatory (next to (next to Fiske): 16Fiske): 16””, 18, 18””, 24, 24””telescopestelescopes

Read all course information in your Read all course information in your syllabus handout (after class)!syllabus handout (after class)!

ThreeThree inin--class class midmid--term examsterm exams ((m/cm/c, short , short essay, quantitative analysis):essay, quantitative analysis): 45%45%

HomeworkHomework + observing assignments:+ observing assignments: 20%20%Final examFinal exam:: 25%25%Clickers + discussion contributionsClickers + discussion contributions:: 10%10%

There are no makeThere are no make--up exams or late turnup exams or late turn--insins

New New ii--clickersclickers (radio frequency)(radio frequency)

•• RequiredRequired ---- bring to each class and recitation!bring to each class and recitation!•• Register clicker to your nameRegister clicker to your name in next classin next class

•• Used for reading quizzes, inUsed for reading quizzes, in--class discussion class discussion questions, feedbackquestions, feedback

More on iMore on i--clickersclickers

•• CreditCredit starts next weekstarts next week

•• Graded 100% for correct Graded 100% for correct answer, 50% for any answeranswer, 50% for any answer

•• Your grades available online Your grades available online weekly weekly ((CULearnCULearn))

•• Register in next class!Register in next class!

Important classroom policiesImportant classroom policies•• Working together on homework is Working together on homework is

encouragedencouraged, BUT:BUT:•• Your answers must be in your own words Your answers must be in your own words ----

exact copies will be awarded split creditexact copies will be awarded split credit•• Note sources and whom you worked with on Note sources and whom you worked with on

homeworkshomeworks•• Using another personUsing another person’’s clicker is cheatings clicker is cheating

•• Students are expected to follow the CU Honor Students are expected to follow the CU Honor Code and behave with courtesy to the instructors Code and behave with courtesy to the instructors and their classmatesand their classmates

Beginning of TodayBeginning of Today’’s Classs Class

•• Course goalsCourse goals•• Course overviewCourse overview•• Course Course

informationinformation

•• Introduction: Introduction: Sizes and ScalesSizes and Scales

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Develop a Develop a broad viewbroad view of of what we know about the what we know about the universeuniverse

Understand the forcesUnderstand the forces that that shape the universe and its shape the universe and its history history

Help you understand Help you understand how how we can figure all this outwe can figure all this out

Appreciate the beautyAppreciate the beauty and and richness of what goes onrichness of what goes on

Course GoalsCourse Goals Course Overview:Course Overview: What we shall studyWhat we shall study•• Vast range of Vast range of SIZES and SCALESSIZES and SCALES: finding : finding

our wayour way through the universethrough the universe

Light Light (Electromagnetic Radiation)(Electromagnetic Radiation)

•• What is lightWhat is light??

•• How do How do we use itwe use itto find out what to find out what and where things and where things are?are?

•• Waves Waves vsvs particlesparticles

TelescopesTelescopes (Tools of the Trade)(Tools of the Trade)

Our Nearest Star :Our Nearest Star : The SunThe Sun

Star in middleStar in middleof its life on MSof its life on MS

STARSSTARS of of very many very many sizes and sizes and

colorscolors

Evolution path andEvolution path andcolor / brightness color / brightness Depends on Depends on MASSMASS

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STELLARSTELLAR Birth and LifeBirth and Life STAR DEATH:STAR DEATH: white dwarfs, white dwarfs, neutron stars and black holesneutron stars and black holes

OUR GALAXY :OUR GALAXY : The Milky WayThe Milky Way

200+ billion stars in MW200+ billion stars in MW

Exploring aExploring a Universe of GALAXIESUniverse of GALAXIES

Billion+ galaxies!Billion+ galaxies!

GALACTIC evolutionGALACTIC evolution

Galaxy collisions, quasarsGalaxy collisions, quasars

Dark matterDark matter, dark energy and , dark energy and fate of universefate of universe

LensingLensing

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BIG BANGBIG BANG beginningbeginning Specific Topics for Today + Specific Topics for Today + ThurThur

•• Nature of astronomy as a scienceNature of astronomy as a science•• Scientific method:Scientific method: we observe, hypothesize, we observe, hypothesize,

test its predictions, maybe fix it and try againtest its predictions, maybe fix it and try again•• Light as wavesLight as waves•• Special colors of light associated with each Special colors of light associated with each

elementelement•• Homework 1Homework 1 passed out todaypassed out today

Homework Set 1Homework Set 1•• Part A Part A involves going to book website, after login involves going to book website, after login

`joining our class`joining our class’’ ((ASTR1040TOOMRE2007ASTR1040TOOMRE2007, as in , as in syllabus), doing the syllabus), doing the `Light & Spectroscopy`Light & Spectroscopy’’ tutorial tutorial in Chap 5 while having your performance ein Chap 5 while having your performance e--recorded (can repeat as often as wish). Complete recorded (can repeat as often as wish). Complete by by ThurThur 25 Jan.25 Jan.

•• Part BPart B involves completing the involves completing the `Energy Level `Energy Level Diagrams & Spectral LinesDiagrams & Spectral Lines’’ problem sheet passed problem sheet passed out in class today. Due next out in class today. Due next ThurThur in class, no in class, no lateslates. .

For next class meeting, read:For next class meeting, read:How to Succeed How to Succeed in this course, p. xxviii+in this course, p. xxviii+

•• Chapter Chapter 11, all, all (Our Place in Universe)(Our Place in Universe)•• Review Review Basic AstronomicalBasic Astronomical terms, p. 4terms, p. 4•• Chapter Chapter 22, review all, review all (Motion of Stars, Seasons)(Motion of Stars, Seasons)•• Chap 3, sec Chap 3, sec 3.53.5 (Science of Astronomy)(Science of Astronomy)•• Chap Chap 4, review all4, review all (Making Sense of Universe)(Making Sense of Universe)•• Begin reading Chap Begin reading Chap 5, carefully5, carefully (Light and Matter)(Light and Matter)

•• You can get a copy of these slides after class from You can get a copy of these slides after class from course website (can be helpful)course website (can be helpful)

ATOMS BEHAVEATOMS BEHAVETHE SAMETHE SAMEEVERYWHEREEVERYWHERE

(we hope, and(we hope, andkeep testing)keep testing)

GRAVITY ACTSGRAVITY ACTSEVERYWHEREEVERYWHERE

UNIVERSALITYUNIVERSALITYOF `LAWSOF `LAWS’’ SCIENTIFIC `LAWSSCIENTIFIC `LAWS’’ areare

constantly being tested constantly being tested