Hie-Joon Kim. Professor Emeritus Seoul National University. Experience. Representative Publications
|
|
- Bonnie Armstrong
- 6 years ago
- Views:
Transcription
1 Hie-Joon Kim Professor Emeritus Seoul National University B.S. Chemistry, Seoul National University, Korea, 1970 Ph.D. Chemistry, University of Chicago, USA, 1977 Experience Professor, Department of Chemistry Seoul National University ( ) Chair Professor, Gw angju Institute of Science and Technology (2013-Present) SNU Teaching Aw ard (2007) Representative Publications Philosophical Questions Scientific Answ ers (Thinking Power Books, 2012) Chemistry of Life, Chemistry for Life (Free Academy, 2009)
2 Chapter 4 Expansion of the Universe
3 INTRODUCTION Proc. Nat. Acad. Sci. (1929) A Relation between Distance and Radial Velocity among Extra-Galactic Nebulae Edwin Hubble gspot.com/_xy K0EVHYM 8Q/S 9i38IyfS3I/AAA AAAAAAUQ/U KOIvCSlqK8/s3 20/Andromeda +Galaxy+1.jpg mylinks.wikisp aces.com/file/ view/pic_2.jp g/ /pic_2.jpg
4 4-1 Leavitt' s Stars Determinations of the motion of the sun with respect to the extra-galactic observer stationary galaxy nebulae have involved a K term of several hundred kilometers which observer receding: redshift galaxy appears to be variable. observer approaching: blueshift galaxy
5 4-1 Leavitt' s St ars Distances of extra-galactic nebulae depend ultimately upon the application of absolute-luminosity criteria to involved stars whose types can be recognized. These include Cepheid variables, novae, and blue stars involved in emission nebulosity.
6 4-1 Leavitt' s Stars Variable Star Henrietta Leavitt ( ) t.com/- PM M 3TLx4gzc/T6I 3DaqOxaI/AAAAA AAAKT8/nEttL7lUs EU/s400/Leavitt_he nrietta_b1.jpg brightness time the brighter variables have the longer periods (1908)
7 4-1 Leavitt' s St ars Cepheid variable in Andromeda Galaxy Edwin Hubble at Mt. Wilson Observatory m/- zucxiuqxdu8/th1qfyn ykki/aaaaaaaacc8/h 1A4sC_fUDc/s400/hub ble_mtwilson.jpg ory/cosmology/ideas/im ages-ideas/ M essier- 31.jpg
8 4-2 Hubble's Law Radial velocities of 46 extra-galactic nebulae are now available, but individual distances are estimated for only 24. Magellanic Cloud 13d272476d_z.jpg The first seven distances are the most reliable, depending upon extensive investigations of many stars involved.
9 4-2 Hubble's Law For such scanty material, so poorly distributed, the results are fairly definite. EDWIN HUBBLB, A RELATION BETWEEN DISTANCE AND RADIAL VELOCITY AM ONG EXTRA-GALACTIC NEBULAE, January 17, 1929.
10 4-2 Hubble's Law org/wikipedia/commons /thumb/a/a7/v.m._sliph er.gif/220px- V.M._Slipher.gif Vesto Slipher The results establish a roughly linear relation between velocities and distances among nebulae for which velocities have been previously published, and the relation appears to dominate the distribution of velocities. The Radial Velocity of the Andromeda Nebula (1913)
11 4-3 Milton Humason In order to investigate the matter on a much larger scale, Mr. Humason at Mount Wilson has initiated a program of determining velocities of the most distant nebulae that can be observed with confidence. Hubble & Humason(1931) Milton Humason m/- RhGWCK_jwRU/UGqYN Se6JUI/AAAAAAAAAFU /Kc5j8Y8azTo/s1600/Mil ton+humason.jpeg Velocity (km/sec) 20,000 15,000 10,000 5, Data Distance (Mpc)
12 4-3 Milton Humason
13 4-4 Expansion of the Universe New data to be expected in the near future may modify the significance of the present investigation or, if confirmatory, will lead to a solution having many times the weight. For this reason it is thought premature to discuss in detail the obvious consequences of the present results.
14 4-4 Expansion of the Universe CZ4mfKybFy4/UGqnWcTiIII/AAAAAAAAAIU/9sepBKIkvq8/s640/Visit a+de+einstein+en+1931+al+monte+wilson.jpeg press.com/2007/09/eddington _2.jpeg Arthur Eddington The Expanding Universe (1933)
15 Review The Big Bang cosmology, If we use the tripod analogy, Stands on three pillars. The first is the expanding universe. The second is the cosmic background radiation. Together they form a strong foundation. Then we have cosmic elemental abundance Giving the model a firm stance.
16 Big Bang and the Origin of Chemical Elements THANK YOU
AST 101 General Astronomy: Stars & Galaxies
Summary Distance Ladder to measure universe REVIEW AST 101 General Astronomy: Stars & Galaxies Different standard candles are useful for different distances Distance measurements allowed to make a MAJOR
More informationPh.D. (1909) Indiana University
4.!! 1875-1969 Ph.D. (1909) Indiana University Lowell Observatory, Flagstaff, Arizona Assistant Director (1915) Acting Director (1916-1926) Director (1926-1952)! discovered blue-shift of the Andromeda
More informationThe History and Philosophy of Astronomy
Astronomy 350L (Fall 2006) The History and Philosophy of Astronomy (Lecture 22: Hubble II) Instructor: Volker Bromm TA: Jarrett Johnson The University of Texas at Austin Edwin P. Hubble: Mariner of the
More informationHie-Joon Kim. Professor Emeritus Seoul National University. Experience. Representative Publications
Hie-Joon Kim Professor Emeritus Seoul National University B.S. Chemistry, Seoul National University, Korea, 1970 Ph.D. Chemistry, University of Chicago, USA, 1977 Experience Professor, Department of Chemistry
More informationLecture 32: The Expanding Universe Readings: Sections 26-5 and 28-2
Lecture 32: The Expanding Universe Readings: Sections 26-5 and 28-2 Key Ideas Measuring the Distances to Galaxies and Determining the Scale of the Universe Distance Methods: Trigonometric Parallaxes Spectroscopic
More informationASTR 200 : Lecture 27. Expansion and large scale structure
ASTR 200 : Lecture 27 Expansion and large scale structure 1 A preference for recession In 1912, american astronomer Vesto Slipher began painstakingly acquiring spectra of `spiral nebulae' and was the first
More informationLecture 22: The expanding Universe. Astronomy 111 Wednesday November 15, 2017
Lecture 22: The expanding Universe Astronomy 111 Wednesday November 15, 2017 Reminders Online homework #10 due Monday at 3pm Then one week off from homeworks Homework #11 is the last one The nature of
More informationV. M. Slipher ( ) was an astronomer who worked at Lowell Observatory in Flagstaff, Arizona. In 1909 he began studying the spectrum of the
Hubble s Law V. M. Slipher (1875-1969) was an astronomer who worked at Lowell Observatory in Flagstaff, Arizona. In 1909 he began studying the spectrum of the Andromeda Nebula. He found that that object
More informationThe Cosmic Distance Ladder. Hubble s Law and the Expansion of the Universe!
The Cosmic Distance Ladder Hubble s Law and the Expansion of the Universe! Last time: looked at Cepheid Variable stars as standard candles. Massive, off-main sequence stars: at a certain stage between
More informationHomework. 1. Hubble. 2. Go to What is the distances for the following things in light years.
Homework 1. Hubble. (a) What did Edwin Hubble observe in 1929 and how did he observe this. Be as specific as possible and sketch a graph of his data, with clearly labeled x and y axes and units given for
More informationThere are three basic types of galaxies:
Galaxies There are three basic types of galaxies: Spirals Ellipticals Irregulars To make a long story short, elliptical galaxies are galaxies that have used up all their gas forming stars, or they have
More informationHubble Ultra Deep Space View
Galaxies stars come in large groups (20-1000 billion stars) called Galaxies >2 trillion observable galaxies. Come in Shapes and Sizes depending on how they were formed Elliptical (football shape) Spirals
More informationAstronomy 25. Astronomy 25. Anything back then that could not be seen clearly was called a nebulae. detect fuzzy light objects.
Astronomy 25 Astronomy 25 Before the 1920 s s telescopes would detect fuzzy light objects. Anything back then that could not be seen clearly was called a nebulae. Immanuel Kant (1724-1804) 1804) Kant had
More informationThe Big Bang Theory. Rachel Fludd and Matthijs Hoekstra
The Big Bang Theory Rachel Fludd and Matthijs Hoekstra Theories from Before the Big Bang came from a black hole from another universe? our universe is part of a multiverse? just random particles? The Big
More informationThe Extragalactic Distance Scale
One of the important relations in Astronomy. It lets us Measure the distance to distance objects. Each rung on the ladder is calibrated using lower-rung calibrations. Distance Objects Technique 1-100 AU
More informationToday s Topics & Events
ASTR 1120: Stars & Galaxies Prof. Juri Toomre TA: Licia Ray Lecture 34 Wed 7 Apr 04 zeus.colorado.edu/astr1120-toomre toomre NGC 1232 Today s Topics & Events Today we look at the challenge of measuring
More informationA 103 Notes, Week 14, Kaufmann-Comins Chapter 15
NEARBY GALAXIES I. Brief History A 103 Notes, Week 14, Kaufmann-Comins Chapter 15 A. Kant B. Curtis-Shapley debate C. Distance to Andromeda II. Classification of nearby galaxies: Spirals, Ellipticals,
More informationUnit 7 Review Guide: The Universe
Unit 7 Review Guide: The Universe Light Year: Unit of distance used to measure the great vastness of space. Galaxy: Large group of stars, gas, and dust held together by gravity. Spiral Galaxy: Galaxy in
More informationBased on observations with the 2-m RCC telescope of Rozhen National. Academy of Sciences.
Based on observations with the 2-m RCC telescope of Rozhen National Astronomical Observatory operated by Institute of Astronomy, Bulgarian Academy of Sciences. http://www.nao-rozhen.org Photo: P. Markishky
More informationTA Final Review. Class Announcements. Objectives Today. Compare True and Apparent brightness. Finding Distances with Cepheids
Class Announcements Vocab Quiz 4 deadline is Saturday Midterm 4 has started, ends Monday Lab was in the Planetarium. You still need to do the 2 questions Check PS100 webpage, make sure your clicker is
More informationPHY 475/375. Lecture 2. (March 28, 2012) The Scale of the Universe: The Shapley-Curtis Debate
PHY 475/375 Lecture 2 (March 28, 2012) The Scale of the Universe: The Shapley-Curtis Debate By the 1920 s a debate had developed over whether some of the spiral nebulae catalogued in the 18th century by
More informationHubble s Law. Tully-Fisher relation. The redshift. λ λ0. Are there other ways to estimate distances? Yes.
Distances to galaxies Cepheids used by Hubble, 1924 to show that spiral nebulae like M31 were further from the Sun than any part of the Milky Way, therefore galaxies in their own right. Review of Cepheids
More informationThe Extragalactic Distance Scale
One of the important relations in Astronomy. It lets us Measure the distance to distance objects. Each rung on the ladder is calibrated using lower-rung calibrations. Distance Objects Technique 1-100 AU
More informationBROCK UNIVERSITY. Test 2, March 2018 Number of pages: 9 Course: ASTR 1P02, Section 1 Number of Students: 465 Date of Examination: March 12, 2018
BROCK UNIVERSITY Page 1 of 9 Test 2, March 2018 Number of pages: 9 Course: ASTR 1P02, Section 1 Number of Students: 465 Date of Examination: March 12, 2018 Number of hours: 50 min Time of Examination:
More informationThe final is Thursday, July 2nd in class. Don t be late! The test will cover Chapters 1-16 and with a STRONG EMPHASIS on Chapters 9-16, 18, and
Final Exam!!! The final is Thursday, July 2nd in class. Don t be late! The test will cover Chapters 1-16 and 18-19 with a STRONG EMPHASIS on Chapters 9-16, 18, and 19. It will consist of 50 questions and
More informationIsland Universes. Up to 1920 s, many thought that Milky Way encompassed entire universe.
Island Universes Up to 1920 s, many thought that Milky Way encompassed entire universe. Observed three types of nebulas (clouds): - diffuse, spiral, elliptical - many were faint, indistinct - originally
More informationVM Slipher and the discovery of the expanding universe The Big Bang: Fact or Fiction?
VM Slipher and the discovery of the expanding universe The Big Bang: Fact or Fiction? Cormac O Raifeartaigh Waterford Institute of Technology Overview A brief history of experiment (1912-1931) The redshifts
More informationAstronomy Hour Exam 2 March 10, 2011 QUESTION 1: The half-life of Ra 226 (radium) is 1600 years. If you started with a sample of 100 Ra 226
Astronomy 101.003 Hour Exam 2 March 10, 2011 QUESTION 1: The half-life of Ra 226 (radium) is 1600 years. If you started with a sample of 100 Ra 226 atoms, approximately how many Ra 226 atoms would be left
More informationHUBBLE SPACE TELESCOPE
ASTRO 202 Age of the Universe Tuesday February 19, 2008 STARS: How and where do they form? From clouds of dust and gas primarily hydrogen -in our galaxy and other galaxies Part of the Orion nebula (Hubble
More informationChapter 11 The Superuniverse Wall
Chapter 11 The Superuniverse Wall Orvonton is the Local Group, which has a radius of approximately 4 Mly. The location of Uversa at the center of Orvonton is relatively near us. From the internal structure
More informationThe King's University College Astronomy 201 Mid-Term Exam Solutions
The King's University College Astronomy 201 Mid-Term Exam Solutions Instructions: The exam consists of two sections. Part A is 20 multiple choice questions - please record answers on the sheet provided.
More informationGalaxies. Hubbleʼs Law. Author: Sarah Roberts
Galaxies Hubbleʼs Law Author: Sarah Roberts Hubbleʼs Law Introduction The first galaxies were identified in the 17th Century by the French astronomer Charles Messier, although at the time he did not know
More informationLecture #21: Plan. Normal Galaxies. Classification Properties Distances
Lecture #21: Plan Normal Galaxies Classification Properties Distances Messier 31 = M31 Early 20 th Century The Great Debate (4/26/1920): Harlow Shapley (Mt Wilson) vs Heber Curtis (Lick Observatory) Smithsonian
More informationCosmology. Stellar Parallax seen. The modern view of the universe
Cosmology The modern view of the universe SC/NATS 1730, XXVIIICosmology 1 Stellar Parallax Copernicus said stellar parallax couldn t be seen because the stars were so far away. A strictly ad hoc explanation
More informationASTRONOMY II Spring 1995 FINAL EXAM. Monday May 8th 2:00pm
ASTRONOMY II - 79202 Spring 1995 FINAL EXAM Monday May 8th 2:00pm Name: You have three hours to complete this exam. I suggest you read through the entire exam before you spend too much time on any one
More informationLecture 30: Geometry & Expansion of the. Astronomy 101
Lecture 30: Geometry & Expansion of the Universe Astronomy 101 Cosmology Cosmology is the study of the entire Universe: Physics of the Universe. Distribution of objects on allscales scales. Motions of
More informationEdwin Hubble Changed Our Ideas About the Universe
Edwin Hubble Changed Our Ideas About the Universe Astronomers continue to use the Hubble Space Telescope named after him. Transcript of radio broadcast: 28 April 2009 ANNOUNCER: EXPLORATIONS -- a program
More information- M31) Biggest is Andromeda (Sb. On Galaxy Evolution Lane. Large & Small Magellanic Clouds. ASTR 1040 Accel Astro: Stars & Galaxies
ASTR 1040 Accel Astro: Stars & Galaxies Prof. Juri Toomre TA: Nicholas Nelson Lecture 24 Thur 7 Apr 2011 zeus.colorado.edu/astr1040-toomre toomre Stefan s Quintet On Galaxy Evolution Lane Look at our local
More informationFigure 19.19: HST photo called Hubble Deep Field.
19.3 Galaxies and the Universe Early civilizations thought that Earth was the center of the universe. In the sixteenth century, we became aware that Earth is a small planet orbiting a medium-sized star.
More informationDoppler Effect. Sound moving TOWARDS. Sound moving AWAY 9/22/2017. Occurs when the source of sound waves moves towards or away
Burkey- ESS QUIZ Thursday At the instant of the Big Bang, all the matter, energy, time, & space in the Universe was condensed into a single, tiny point. We call this Singularity. Doppler Effect Occurs
More informationHubble Ultra Deep Space View PHYS 162 2
Galaxies stars come in large groups (20-200 billion stars) called Galaxies >2 trillion observable galaxies. Come in Shapes and Sizes depending on how they were formed Elliptical (football shape) Spirals
More information11/18/2008. General Theory of Relativity (1915) Cosmologists had decided that the universe was eternal (rather than created) Problem:
Cosmologists had decided that the universe was eternal (rather than created) General Theory of Relativity (1915) Problem: Gravitational attraction would cause the universe to collapse. 1 Solution: Addition
More informationFormation and evolution of the cosmic web
Formation and evolution of the cosmic web aurorasimionescu.wordpress.com/teaching Aurora Simionescu ISAS/JAXA Course Evaluation One short essay (around 2-4 pages) exploring in more detail one of the topics
More informationRevision Guide for Chapter 12
Revision Guide for Chapter 12 Contents Student s Checklist Revision Notes The speed of light... 4 Doppler effect... 4 Expansion of the Universe... 5 Microwave background radiation... 5 Galaxy... 6 Summary
More informationThe Cosmic Distance Ladder
The Cosmic Distance Ladder (Mário Santos) What is it? A way to calculate distances to objects very far away based on the measured distances to nearby objects: 1. Start with the distance to the Sun (1 AU)
More informationChapter 30. Galaxies and the Universe. Chapter 30:
Chapter 30 Galaxies and the Universe Chapter 30: Galaxies and the Universe Chapter 30.1: Stars with varying light output allowed astronomers to map the Milky Way, which has a halo, spiral arm, and a massive
More informationHie-Joon Kim. Professor Emeritus Seoul National University. Experience. Representative Publications
Hie-Joon Kim Professor Emeritus Seoul National University B.S. Chemistry, Seoul National University, Korea, 1970 Ph.D. Chemistry, University of Chicago, USA, 1977 Experience Professor, Department of Chemistry
More informationOases in the Dark: Galaxies as probes of the Cosmos
Utah State University DigitalCommons@USU Public Talks Astrophysics 8-10-2007 Oases in the Dark: Galaxies as probes of the Cosmos Shane L. Larson Utah State University Follow this and additional works at:
More informationASTR 1040: Stars & Galaxies
ASTR 1040: Stars & Galaxies Our wide world (universe) of Galaxies Expanding universe: Hubble s discovery #2 Challenge of measuring s in universe review methods used Subtle concept of Lookback time Active
More informationGalaxies. The majority of known galaxies fall into one of three major classes: spirals (78 %), ellipticals (18 %) and irregulars (4 %).
Galaxies Collection of stars, gas and dust bound together by their common gravitational pull. Galaxies range from 10,000 to 200,000 light-years in size. 1781 Charles Messier 1923 Edwin Hubble The distribution
More informationAS1001: Galaxies and Cosmology
AS1001: Galaxies and Cosmology Keith Horne kdh1@st-and.ac.uk http://www-star.st-and.ac.uk/~kdh1/eg/eg.html Text: Kutner Astronomy:A Physical Perspective Chapters 17-21 Cosmology Today Blah Title Current
More informationdatapreviously available may be found in the two former discussions of the EXTRAGALA CTIC NEB ULAE velocity-distance relation.
264 ASTRONOMY: HUBBLE AND HUMASON PRoc. N. A. S. THE VELOCITY-DISTANCE RELATION FOR ISOLATED EXTRAGALA CTIC NEB ULAE BY EDWIN HUBBLE AND MILTON L. HUMASON MouNr WILSON OBSERVATORY, CARNEGIE INSTITUTION
More informationAddition to the Lecture on Galactic Evolution
Addition to the Lecture on Galactic Evolution Rapid Encounters In case the encounter of two galaxies is quite fast, there will be not much dynamical friction due to lack of the density enhancement The
More informationGalaxies & Introduction to Cosmology
Galaxies & Introduction to Cosmology Other Galaxies: How many are there? Hubble Deep Field Project 100 hour exposures over 10 days Covered an area of the sky about 1/100 the size of the full moon Probably
More informationo Terms to know o Big Bang Theory o Doppler Effect o Redshift o Universe
Standard 1: Students will understand the scientific evidence that supports theories that explain how the universe and the solar system developed. They will compare Earth to other objects in the solar system.
More informationBROCK UNIVERSITY. Test 2, March 2015 Number of pages: 9 Course: ASTR 1P02 Number of Students: 420 Date of Examination: March 5, 2015
BROCK UNIVERSITY Page 1 of 9 Test 2, March 2015 Number of pages: 9 Course: ASTR 1P02 Number of Students: 420 Date of Examination: March 5, 2015 Number of hours: 50 min Time of Examination: 18:00 18:50
More informationHie-Joon Kim. Seoul National University. Experience. Representative Publications
Hie-Joon Kim Professor Emeritus Seoul National University B.S. Chemistry, Seoul National University, Korea, 1970 Ph.D. Chemistry, University of Chicago, USA, 1977 Experience Professor, Department of Chemist
More informationWHAT DOES A GAME HAVE TO DO WITH ASTRONOMY? AST MESA COMMUNITY COLLEGE
NAME: DATE: INTRODUCTION This lab exercise introduces the concepts of scientific inquiry. LEARNING GOALS Identify patterns in data. Propose scientific hypotheses. Test predictions using observations. EQUIPMENT
More informationNOTE ON THE VELOCITIES AND MAGNITUDES OF EXTERNAL GALAXIES By HARLOW SHAPLPY
voi.. 15, 1929 ASTRONOMY: H. SHAPLE Y 565 to higher states without further complication but the convergence is still doubtful. I am very much indebted to Professor A. Sommerfeld, Professor P. S. Epstein
More informationGalaxies and Hubble s Law
Galaxies and Hubble s Law Some Important History: Charles Messier In the early 19 th century, Charles Messier was hunting for comets, but in the telescopes of the time, identifying comets was difficult
More informationSlipher, galaxies, and cosmic velocity fields
Slipher, galaxies, and cosmic velocity fields John Peacock University of Edinburgh Origins of the expanding universe Flagstaff, 15 Sept 2012 The Hubble expansion V = H D in 1929, Hubble discovered the
More informationChapter 19 Galaxies. Hubble Ultra Deep Field: Each dot is a galaxy of stars. More distant, further into the past. halo
Chapter 19 Galaxies Hubble Ultra Deep Field: Each dot is a galaxy of stars. More distant, further into the past halo disk bulge Barred Spiral Galaxy: Has a bar of stars across the bulge Spiral Galaxy 1
More informationLecture 14: Other Galaxies A2020 Prof. Tom Megeath. The Milky Way in the Infrared 3/17/10. NGC 7331: the Milky Way s Twins. Spiral Galaxy bulge halo
Lecture 14: Other Galaxies A2020 Prof. Tom Megeath Our Galaxy: Side View We see our galaxy edge-on Primary features: Disk: young and old stars where we live. Bulge: older stars Halo: oldest stars, globular
More informationThe Cosmological Distance Ladder. It's not perfect, but it works!
The Cosmological Distance Ladder It's not perfect, but it works! First, we must know how big the Earth is. Next, we must determine the scale of the solar system. Copernicus (1543) correctly determined
More informationBROCK UNIVERSITY. Test 2: July 2015 Number of pages: 9 Course: ASTR 1P02, Section 2 Number of students: 318
BROCK UNIVERSITY Page 1 of 9 Test 2: July 2015 Number of pages: 9 Course: ASTR 1P02, Section 2 Number of students: 318 Examination date: 4 July 2015 Time limit: 50 min Time of Examination: 13:00 13:50
More informationAccording to the currents models of stellar life cycle, our sun will eventually become a. Chapter 34: Cosmology. Cosmology: How the Universe Works
Chapter 34: Cosmology According to the currents models of stellar life cycle, our sun will eventually become a a) Cloud of hydrogen gas b) Protostar c) Neutron star d) Black hole e) White dwarf id you
More information4/10/18. Our wide world (universe) of Galaxies. Spirals ~80% of galaxies
ASTR 1040: Stars & Galaxies Prof. Juri Toomre TAs: Peri Johnson, Ryan Horton Lecture 23 Tues 10 Apr 2018 zeus.colorado.edu/astr1040-toomre Our wide world (universe) of Galaxies The rich range of galaxies:
More informationGalaxies and Cosmology
Galaxies and Cosmology Attendance Quiz Are you here today? (a) yes (b) no Here! (c) Cosmetology? Like hair and nails and makeup? Next Tuesday, 5/30: Dr. Jorge Moreno is unavailable, so class will be cancelled
More information29:50 Stars, Galaxies, and the Universe Final Exam December 13, 2010 Form A
29:50 Stars, Galaxies, and the Universe Final Exam December 13, 2010 Form A There are 40 questions. Read each question and all of the choices before choosing. Budget your time. No whining. Walk with Ursus!
More informationAstronomy 1 Fall 2016
Astronomy 1 Fall 2016 Lecture 17; November 29, 2016 Announcements Final grade will be calculated as stated on the course web page. The final exam is 40% of your total grade. Gaucho Space does not show
More informationThe Milky Way. Finding the Center. Milky Way Composite Photo. Finding the Center. Milky Way : A band of and a. Milky Way
The Milky Way Milky Way : A band of and a The band of light we see is really 100 billion stars Milky Way probably looks like Andromeda. Milky Way Composite Photo Milky Way Before the 1920 s, astronomers
More informationThe Milky Way, Hubble Law, the expansion of the Universe and Dark Matter Chapter 14 and 15 The Milky Way Galaxy and the two Magellanic Clouds.
The Milky Way, Hubble Law, the expansion of the Universe and Dark Matter Chapter 14 and 15 The Milky Way Galaxy and the two Magellanic Clouds. Image taken from the European Southern Observatory in Chile
More informationCALCULATING DISTANCES. Cepheids and RR Lyrae India Jackson-Henry
CALCULATING DISTANCES Cepheids and RR Lyrae India Jackson-Henry What are Cepheids and RR Lyrae Stars As stars evolve, their atmospheres become unstable and the star becomes intrinsically variable. Two
More informationUniversal redshift, the Hubble constant The cosmic background radiation until COBE
Universal redshift, the Hubble constant The cosmic background radiation until COBE Sylwester Radomski Gesellschaft fuer Schwerionenforschung November 11, 2004 1 1 Dimensions in the Universe The scale of
More informationSet 5: Expansion of the Universe
Set 5: Expansion of the Universe Cosmology Study of the origin, contents and evolution of the universe as a whole Expansion rate and history Space-time geometry Energy density composition Origin of structure
More informationNed Wright's Cosmology Tutorial
Sunday, September 5, 1999 Ned Wright's Cosmology Tutorial - Part 1 Page: 1 Ned Wright's Cosmology Tutorial Part 1: Observations of Global Properties Part 2: Homogeneity and Isotropy; Many Distances; Scale
More informationStars Above, Earth Below By Tyler Nordgren Laboratory Exercise for Chapter 10
Name Lab Partners: Section Date Stars Above, Earth Below By Tyler Nordgren Laboratory Exercise for Chapter 10 Equipment: Balloon Ruler THE EXPANDING UNIVERSE Purpose: To create a simple universe and observe
More informationHubble sequence galaxy classification scheme, originally based on appearance, but correlates with other properties as well.
Normal Galaxies (Ch. 24) Here we will cover topics in Ch. 24 up to 24.4, but then skip 24.4, 24.5. The sections we are skipping are all about processes that occur in the centers of galaxies, so I d like
More informationGALAXIES. Prof Steve Phillipps Physics Room 4.12 Level H Spring 2007
GALAXIES Prof Steve Phillipps Physics Room 4.12 Level H Spring 2007 Galaxies in the Universe Galaxies are basically large systems of stars (though we will see as we go along that there is more to them
More informationQuiz name: Chapter 12 Classwork Assignment Famous Scientist Edwin Hubble
Name: Quiz name: Chapter 12 Classwork Assignment Famous Scientist Edwin Hubble Date: 1. was born on November 20, 1889. 2. He graduated from the University of Chicago and served in WWI before settling down
More informationAstronomy 1 Winter Lecture 24; March
Astronomy 1 Winter 2011 Lecture 24; March 7 2011 Previously on Astro-1 Introduction to special relativity Introduction to general relativity Introduction to black holes, stellar and supermassive Today..
More informationCosmology. Thornton and Rex, Ch. 16
Cosmology Thornton and Rex, Ch. 16 Expansion of the Universe 1923 - Edwin Hubble resolved Andromeda Nebula into separate stars. 1929 - Hubble compared radial velocity versus distance for 18 nearest galaxies.
More informationRelativity and Astrophysics Lecture 15 Terry Herter. RR Lyrae Variables Cepheids Variables Period-Luminosity Relation. A Stellar Properties 2
Stellar Properties Relativity and Astrophysics Lecture 15 Terry Herter Outline Spectroscopic Parallax Masses of Stars Periodic Variable Stars RR Lyrae Variables Cepheids Variables Period-Luminosity Relation
More informationDead & Variable Stars
Dead & Variable Stars Supernovae Death of massive Stars As the core collapses, it overshoots and bounces A shock wave travels through the star and blows off the outer layers, including the heavy elements
More informationAstronomy 102 Lab: Distances to Galaxies
Name: Astronomy 102 Lab: Distances to Galaxies You will access your textbook for this lab. Pre-Lab Assignment: As we began to talk about stars beyond the Sun, one of the most important pieces of information
More informationChapter 20: Galaxies and the Foundation of Modern Cosmology
Chapter 20 Lecture Chapter 20: Galaxies and the Foundation of Modern Cosmology Galaxies and the Foundation of Modern Cosmology 20.1 Islands of Stars Our goals for learning: How are the lives of galaxies
More informationOn Today s s Radar. ASTR 1040 Accel Astro: Stars & Galaxies. Sb) Andromeda M31 (Sb( Andromeda surprises with Spitzer in IR
ASTR 1040 Accel Astro: Stars & Galaxies Prof. Juri Toomre TAs: Nicholas Nelson, Zeeshan Parkar Lecture 24 Thur 8 Apr 2010 zeus.colorado.edu/astr1040-toomre toomre NGC 1232 Spiral Sb On Today s s Radar
More information4/6/17. SEMI-WARM stuff: dust. Tour of Galaxies. Our Schedule
ASTR 1040: Stars & Galaxies Super-bubble blowout in NGC 3709 Prof. Juri Toomre TAs: Piyush Agrawal, Connor Bice Lecture 22 Thur 6 Apr 2017 zeus.colorado.edu/astr1040-toomre Tour of Galaxies Look at complex
More information11/9/2010. Stars, Galaxies & the Universe Announcements. Sky & Telescope s Week at a Glance. iphone App available now.
Stars, Galaxies & the Universe Announcements Reading Quiz #11 Wednesday Mix of questions from today s lecture & reading for Wed. on active galaxies HW#10 in ICON due Friday (11/12) by 5 pm - available
More informationCosmic Distance Determinations
Cosmic Distance Determinations Radar (works for inner solar system) Parallax D(pc) = 1 p(arcsec) GAIA satellite (2013) 20 micro-arcsec resolution! Thus D < 10 kpc Beyond Parallax: Standard Candles Use
More information11/8/18. Tour of Galaxies. Our Schedule
ASTR 1040: Stars & Galaxies Super-bubble blowout in NGC 3709 Prof. Juri Toomre TAs: Ryan Horton, Loren Matilsky Lecture 22 Thur 8 Nov 2018 zeus.colorado.edu/astr1040-toomre Tour of Galaxies Look at complex
More informationBig Galaxies Are Rare! Cepheid Distance Measurement. Clusters of Galaxies. The Nature of Galaxies
Big Galaxies Are Rare! Potato Chip Rule: More small things than large things Big, bright spirals are easy to see, but least common Dwarf ellipticals & irregulars are most common Faint, hard to see Mostly
More informationParadigm Shifts in Cosmology
FEATURE Principal Investigator Naoshi Sugiyama Research Area Astrophysics Paradigm Shifts in Cosmology The paradigm shift as put forward by Thomas Kuhn means revolutionary changes in the normative concepts
More informationThe Tools of Cosmology. Andrew Zentner The University of Pittsburgh
The Tools of Cosmology Andrew Zentner The University of Pittsburgh 1 Part Two: The Contemporary Universe 2 Contents Review of Part One The Pillars of Modern Cosmology Primordial Synthesis of Light Nuclei
More informationInternational Herald Tribune, November 1, 1907
Recently reports have been current in certain newspapers that Mr. Thomas A. Edison, the inventor, has at last perfected the storage battery, and that within a few months electrically propelled vehicles,
More informationSet 1: Expansion of the Universe
Set 1: Expansion of the Universe Syllabus Course text book: Ryden, Introduction to Cosmology, 2nd edition Olber s paradox, expansion of the universe: Ch 2 Cosmic geometry, expansion rate, acceleration:
More informationMEASURING DISTANCE WITH CEPHEID VARIABLES
Name Date Partner(s) Grade / MEASURING DISTANCE WITH CEPHEID VARIABLES Written by T. Jaeger INTRODUCTION Cepheid stars (named after the class prototype star, DELTA CEPHEI) are of great interest because
More informationPhysicsAndMathsTutor.com
PhysicsAndMathsTutor.com 1 1. State the Cosmological Principle. [Total 2 marks] 2. Describe the important properties of the cosmic microwave background radiation and how the standard model of the Universe
More informationASTR 135 Exam 4 5/4/2015
ASTR 135 Exam 4 5/4/2015 1) The Milky Way is a a) star b) star cluster d) nebula c) galaxy e) universe 2) What distance indicator or method did Edwin Hubble use to establish the distance of the Andromeda
More information