Characteristics of Stars

ANSWER KEY. Stars, Galaxies, and the Universe. Telescopes Guided Reading and Study. Characteristics of Stars Guided Reading and Study

Stars, Galaxies, a the Universe Stars, Galaxies, and the Universe Telescopes Use Target Reading Skills Check student definitions for accuracy. 1. Electromagneticradiationisenergythatcan travel through

Chapter 8: The Family of Stars

Chapter 8: The Family of Stars Motivation We already know how to determine a star s surface temperature chemical composition surface density In this chapter, we will learn how we can determine its distance

Modern Astronomy Review #1

Modern Astronomy Review #1 1. The red-shift of light from distant galaxies provides evidence that the universe is (1) shrinking, only (3) shrinking and expanding in a cyclic pattern (2) expanding, only

Vocabulary. Section Resources

Section 26.2 26.2 Stars 1 FOCUS Objectives 26.2.1 Demonstrate how distance to a star is measured. 26.2.2 Classify stars according to chemical and physical properties. 26.2.3 Interpret the H-R diagram.

Mass-Luminosity and Stellar Lifetimes WS

Name Mass-Luminosity and Stellar Lifetimes WS The graph shows the Mass-Luminosity Relationship for main sequence stars. Use it to answer questions 1-3. 1) A star with a mass of 0.5 solar masses would be

Stars and Galaxies. Evolution of Stars

chapter 13 3 Stars and Galaxies section 3 Evolution of Stars Before You Read What makes one star different from another? Do you think the Sun is the same as other stars? Write your ideas on the lines below.

Stars, Galaxies, and the Universe

Stars, Galaxies, and the Universe Chapter Test A Multiple Choice Write the letter of the correct answer on the line at the left. 1. What is a giant ball of hot gases that undergo nuclear fusion? a. a planet

Directions: For numbers 1-30 please choose the letter that best fits the description.

Directions: For numbers 1-30 please choose the letter that best fits the description. 1. The main force responsible for the formation of the universe is: a. Gravity b. Frictional force c. Magnetic force

Daily Science 04/04/2017

Daily Science 04/04/2017 Which statement best describes the difference between type A stars and type B stars as shown in the diagram? a. Type A stars burn for a shorter amount of time than type B stars.

a. Star A c. The two stars are the same distance b. Star B d. Not enough information

Name: Astro 102 S17 Test 1 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Your test is Version A. Please fill in the circle for A for this question on

The Distance Modulus. Absolute Magnitude. Chapter 9. Family of the Stars

Foundations of Astronomy 13e Seeds Phys1403 Introductory Astronomy Instructor: Dr. Goderya Chapter 9 Family of the Stars Cengage Learning 016 Topics for Today s Class 1. Recap: Intrinsic Brightness a)

Properties of Stars & H-R Diagram

Properties of Stars & H-R Diagram What is a star? A cloud of gas, mainly hydrogen and helium The core is so hot/dense that nuclear fusion can occur. The fusion converts light nuclei (elements) into heavier

Lines of Hydrogen. Most prominent lines in many astronomical objects: Balmer lines of hydrogen

The Family of Stars Lines of Hydrogen Most prominent lines in many astronomical objects: Balmer lines of hydrogen The Balmer Thermometer Balmer line strength is sensitive to temperature: Most hydrogen

Lecture 10: The Hertzsprung-Russell Diagram Reading: Sections

Lecture 10: The Hertzsprung-Russell Diagram Reading: Sections 19.7-19.8 Key Ideas The Hertzsprung-Russell (H-R) Diagram Plot of Luminosity vs. Temperature for stars Features: Main Sequence Giant & Supergiant

GALAXIES AND STARS. 2. Which star has a higher luminosity and a lower temperature than the Sun? A Rigel B Barnard s Star C Alpha Centauri D Aldebaran

GALAXIES AND STARS 1. Compared with our Sun, the star Betelgeuse is A smaller, hotter, and less luminous B smaller, cooler, and more luminous C larger, hotter, and less luminous D larger, cooler, and more

Stars & Galaxies. Chapter 27 Modern Earth Science

Stars & Galaxies Chapter 27 Modern Earth Science Chapter 27, Section 1 27.1 Characteristics of Stars How do astronomers determine the composition and surface temperature of a star? Composition & Temperature

Betelgeuse and Rigel are two super giants in the constellation of Orion. Constellation: Stellar cluster:...

IB Physics Astrophysics Option Summer Assignment Name Due 2 nd Rotation Fall 2016 1. This question is about stars. Betelgeuse and Rigel are two super giants in the constellation of Orion. Distinguish between

TEK 8 Test Review. 15. Galaxies are best described as -

TEK 8 Test Review 1. List the three subatomic particles and give each of their masses. 2. Describe and draw an illustration (Bohr Model) of the most common element in the Universe. 3. Describe and draw

A blue flame is hotter than a yellow one.

CHAPTER 19 1 Stars SECTION Stars, Galaxies, and the Universe BEFORE YOU READ After you read this section, you should be able to answer these questions: Why are stars different colors? How can scientists

Stars: basic observations

Stars: basic observations Basic properties of stars we would like to know in order to compare theory against observations: Stellar mass M Stellar radius R Surface temperature - effective temperature T

5. A particular star has an angle of parallax of 0.2 arcsecond. What is the distance to this star? A) 50 pc B) 2 pc C) 5 pc D) 0.

Name: Date: 1. How far away is the nearest star beyond the Sun, in parsecs? A) between 1 and 2 pc B) about 12 pc C) about 4 pc D) between 1/2 and 1 pc 2. Parallax of a nearby star is used to estimate its

Student Exploration: H-R Diagram

Name: Date: Student Exploration: H-R Diagram Vocabulary: giant, H-R diagram, luminosity, main sequence, star, supergiant, white dwarf Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. The

3. c 4. a 5. f 6. b 7. e. 1. Stars are bright and hot. 2. Distances between stars are measured in light-years. 3. The sun is a yellow star.

Stars, Galaxies, Use Target Reading Skills Check student definitions for accuracy. 1. Electromagnetic radiation is energy that can travel through space in the form of waves. 2. visible light 3. wavelength

INSIDE LAB 8: Plotting Stars on the Hertzsprung- Russell Diagram

INSIDE LAB 8: Plotting Stars on the Hertzsprung- Russell Diagram OBJECTIVE: To become familiar with the Hertzsprung-Russell diagram and the method of spectroscopic parallax. DISCUSSION: The Hertzsprung-Russell

Guiding Questions. Measuring Stars

Measuring Stars Guiding Questions 1. How far away are the stars? 2. What is meant by a first-magnitude or second magnitude star? 3. Why are some stars red and others blue? 4. What are the stars made of?

How can we use an H-R diagram to know where a star is in its life cycle?

How can we use an H-R diagram to know where a star is in its life cycle? Just like humans, stars go through a life cycle. Over the course of their lives, stars change in ways that make each stage different

Study Guide Chapter 2

Section: Stars Pages 32-38 Study Guide Chapter 2 Circle the letter of the best answer for each question. 1. What do scientists study to learn about stars? a. gravity c. space b. starlight d. colors COLOR

Classifying Stars. Scientists classify stars by: 1. Temperature 2. Brightness

STARS Classifying Stars Scientists classify stars by: 1. Temperature 2. Brightness Star Temperature 1. The color of a star tells us about its temperature. Blue stars are the hottest, 7500 C- 40,000 C.

Name Class Date. Chapter 27. Stars and Galaxies. Review Choose the best response. Write the letter of that choice in the space provided.

Stars and Galaxies Review Choose the best response. Write the letter of that choice in the space provided. 1. In the majority of stars, the most common element is a. oxygen. b. helium. c. hydrogen. d.

Stars and Galaxies. The Sun and Other Stars

CHAPTER 22 Stars and Galaxies LESSON 2 The Sun and Other Stars What do you think? Read the two statements below and decide whether you agree or disagree with them. Place an A in the Before column if you

A1101, Lab 5: The Hertzsprung- Russell Diagram Laboratory Worksheet

Student Name: Lab TA Name: A1101, Lab 5: The Hertzsprung- Russell Diagram Laboratory Worksheet One of the most basic physical properties of a star is its luminosity, the rate at which it radiates energy

Get ready for quiz # 5! Get out a ½ sheet and Calculator

Get ready for quiz # 5! Get out a ½ sheet and Calculator The above image shows the solar eclipse earlier this month as covered and uncovered by several different solar observatories. The innermost image

Chapter 8: The Family of Stars

Chapter 8: The Family of Stars We already know how to determine a star s surface temperature chemical composition motion Next, we will learn how we can determine its distance luminosity radius mass Measuring

Organizing the Family of Stars:

Organizing the Family of Stars: We know: Stars have different temperatures, different luminosities, and different sizes. To bring some order into that zoo of different types of stars: organize them in

Astr 5465 Feb. 6, 2018 Today s Topics

Astr 5465 Feb. 6, 2018 Today s Topics Stars: Binary Stars Determination of Stellar Properties via Binary Stars Classification of Binary Stars Visual Binaries Both stars visible Only one star visible Spectroscopic

TAKE A LOOK 2. Identify This star is in the last stage of its life cycle. What is that stage?

CHAPTER 15 2 SECTION Stars, Galaxies, and the Universe The Life Cycle of Stars BEFORE YOU READ After you read this section, you should be able to answer these questions: How do stars change over time?

Basic Properties of the Stars

Basic Properties of the Stars The Sun-centered model of the solar system laid out by Copernicus in De Revolutionibus (1543) made a very specific prediction: that the nearby stars should exhibit parallax

Deducing Temperatures and Luminosities of Stars (and other objects ) Electromagnetic Fields. Sinusoidal Fields

Deducing Temperatures and Luminosities of Stars (and other objects ) Review: Electromagnetic Radiation Gamma Rays X Rays Ultraviolet (UV) Visible Light Infrared (IR) Increasing energy Microwaves Radio

27.1: Characteristics of Stars

27.1: Characteristics of Stars STAR NOTES: Part 1 What is a Star? A body of gases that gives off energy in the form of light and heat. 27.1: Characteristics of Stars Are all stars the same? No 1. Stars

Instructions. Students will underline the portions of the PowerPoint that are underlined.

STARS Instructions Students will underline the portions of the PowerPoint that are underlined. Nuclear Furnace 1. A star is like a gigantic nuclear furnace. 2. The nuclear reactions inside convert hydrogen

Galaxies and Stars. 3. Base your answer to the following question on The reaction below represents an energy-producing process.

Galaxies and Stars 1. To an observer on Earth, the Sun appears brighter than the star Rigel because the Sun is A) hotter than Rigel B) more luminous than Rigel C) closer than Rigel D) larger than Rigel

Stars & Galaxies. Chapter 27, Section 1. Composition & Temperature. Chapter 27 Modern Earth Science Characteristics of Stars

Stars & Galaxies Chapter 27 Modern Earth Science Chapter 27, Section 1 27.1 Characteristics of Stars Composition & Temperature Scientists use the following tools to study stars Telescope Observation Spectral

OPEN CLUSTER PRELAB The first place to look for answers is in the lab script!

NAME: 1. Define using complete sentences: Globular Cluster: OPEN CLUSTER PRELAB The first place to look for answers is in the lab script! Open Cluster: Main Sequence: Turnoff point: Answer the following

Lecture 26 The Hertzsprung- Russell Diagram January 13b, 2014

1 Lecture 26 The Hertzsprung- Russell Diagram January 13b, 2014 2 Hertzsprung-Russell Diagram Hertzsprung and Russell found a correlation between luminosity and spectral type (temperature) 10000 Hot, bright

Stars and Galaxies. Content Outline for Teaching

Section 1 Stars A. Patterns of stars - constellations 1. Ancient cultures used mythology or everyday items to name constellations 2. Modern astronomy studies 88 constellations 3. Some constellations are

StarTalk. Sanjay Yengul May "To know ourselves, we must know the stars."

StarTalk Sanjay Yengul May 2016 "To know ourselves, we must know the stars." Twinkle Twinkle How many stars are there? How big are these stars? Picture of night sky What are they made of? Why do they shine?

( ) = 5log pc NAME: OPEN CLUSTER PRELAB

NAME: OPEN CLUSTER PRELAB 1. Read over the material in the lab script that discusses the background of colormagnitude (CM) diagrams (these can also be called H-R diagrams). Explain the CM diagram: What

They developed a graph, called the H-R diagram, that relates the temperature of a star to its absolute magnitude.

Ejnar Hertzsprung and Henry Russell noticed that stars with higher temperatures and large sizes also have brighter absolute magnitudes the actual amount of light given off by a star. (also referred to

Classifying the stars: from dwarfs to supergiants

Classifying the stars: from dwarfs to supergiants By SAO Encyclopedia of Astronomy, Big History Project, adapted by Newsela staff on 08.22.17 Word Count 697 Level 1170L Artist s depiction of the life cycle

Question: How do we use a Hertzsprung-Russell Diagram to explain star characteristics?

The Hertzsprung-Russell Diagram Assignment Introduction: The development of the H-R Diagram began with Danish astronomer Ejnar Hertzsprung who began plotting the stars around 1911. American astronomer

Hertzprung-Russel and colormagnitude. ASTR320 Wednesday January 31, 2018

Hertzprung-Russel and colormagnitude diagrams ASTR320 Wednesday January 31, 2018 H-R diagram vs. Color- Magnitude Diagram (CMD) H-R diagram: Plot of Luminosity vs. Temperature CMD: Plot of magnitude vs.

Hertzsprung-Russel Diagrams and Distance to Stars

Chapter 10 Hertzsprung-Russel Diagrams and Distance to Stars 10.1 Purpose In this lab, we will explore how astronomer classify stars. This classificatin one way that can be used to determine the distance

How do we know the distance to these stars? The Ping Pong Ball Challenge -Devise a method for determining the height of the ping pong ball above the floor. -You are restricted to the floor. -You can only

Lecture Outlines. Chapter 17. Astronomy Today 8th Edition Chaisson/McMillan Pearson Education, Inc.

Lecture Outlines Chapter 17 Astronomy Today 8th Edition Chaisson/McMillan Chapter 17 Measuring the Stars Units of Chapter 17 17.1 The Solar Neighborhood 17.2 Luminosity and Apparent Brightness 17.3 Stellar

8/30/2010. Classifying Stars. Classifying Stars. Classifying Stars

Classifying Stars In the early 1900s, Ejnar Hertzsprung and Henry Russell made some important observations. They noticed that, in general, stars with higher temperatures also have brighter absolute magnitudes.

Reading and Announcements. Read Chapters 8.3, 11.5, 12.1 Quiz #5, Thursday, March 21 Homework #5 due Tuesday, March 19

Reading and Announcements Read Chapters 8.3, 11.5, 12.1 Quiz #5, Thursday, March 21 Homework #5 due Tuesday, March 19 Measurements of Star Properties Apparent brightness Direct measurement Parallax Distance

Chapter 9: Measuring the Stars

Chapter 9: Measuring the Stars About 10 11 (100,000,000,000) stars in a galaxy; also about 10 11 galaxies in the universe Stars have various major characteristics, the majority of which fall into several

Astronomical Measurements: Brightness-Luminosity-Distance-Radius- Temperature-Mass. Dr. Ugur GUVEN

Astronomical Measurements: Brightness-Luminosity-Distance-Radius- Temperature-Mass Dr. Ugur GUVEN Space Science Distance Definitions One Astronomical Unit (AU), is the distance from the Sun to the Earth.

Directed Reading A. Section: The Life Cycle of Stars TYPES OF STARS THE LIFE CYCLE OF SUNLIKE STARS A TOOL FOR STUDYING STARS.

Skills Worksheet Directed Reading A Section: The Life Cycle of Stars TYPES OF STARS (pp. 444 449) 1. Besides by mass, size, brightness, color, temperature, and composition, how are stars classified? a.

18. Which graph best represents the relationship between the number of sunspots and the amount of magnetic activity in the Sun?

1. Which star has a surface temperature most similar to the surface temperature of Alpha Centauri? A) Polaris B) Betelgeuse C) Procyon B D) Sirius 2. Giant stars have greater luminosity than our sun mainly

λ = 650 nm = c = m s 1 f =? c = fλ f = c λ = ( m s 1 ) ( m) = = Hz T = 1 f 4.

Chapter 13 Stars Section 13.1 Astronomical measurements Worked example: Try yourself 13.1.1 CALCULATING THE FREQUENCY AND PERIOD OF LIGHT The speed of light in a vacuum is approximately 3.0 10 8 m s 1.

Stars and Galaxies 1

Stars and Galaxies 1 Characteristics of Stars 2 Star - body of gases that gives off great amounts of radiant energy as light and heat 3 Most stars look white but are actually different colors Antares -

Family of stars. Fred Sarazin Physics Department, Colorado School of Mines. PHGN324: Family of stars

Family of stars Reminder: the stellar magnitude scale In the 1900 s, the magnitude scale was defined as follows: a difference of 5 in magnitude corresponds to a change of a factor 100 in brightness. Dm

Pr P ope p rti t es s of o f St S a t rs

Properties of Stars Distances Parallax ( Triangulation ): - observe object from two separate points - use orbit of the Earth (1 AU) - measure angular shift of object - angle depends on distance to object

Station #1 Galaxy Cards. Standard 4a: Students know galaxies are clusters of billions of stars and may have different shapes.

Station #1 Galaxy Cards Standard 4a: Students know galaxies are clusters of billions of stars and may have different shapes. Materials: Galaxy cards, your textbook Using your text book answers the following

The Hertzsprung-Russell Diagram

The Hertzsprung-Russell Diagram Name: Date: 1 Introduction As you may have learned in class, the Hertzsprung-Russell Diagram, or the HR diagram, is one of the most important tools used by astronomers:

Astronomy 110 Homework #07 Assigned: 03/06/2007 Due: 03/13/2007. Name: (Answer Key)

Astronomy 110 Homework #07 Assigned: 03/06/2007 Due: 03/13/2007 Name: (Answer Key) Directions: Listed below are twenty (20) multiple-choice questions based on the material covered by the lectures thus

Imagine the Universe: Life Cycle of Stars

Objective: To explore the similarities of stars through a Hertzsprung-Russell diagram. Grade Level: 9-12 Subject(s): Space Science Prep Time: < 10 minutes Duration: 30 minutes Materials Category: None

Review Chapter 10. 2) A parsec is slightly more than 200,000 AU. 2)

Review Chapter 10 TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) A parsec is about 3.3 light-years. 1) 2) A parsec is slightly more than 200,000 AU. 2) 3) The nearest

CONTENT EXPECTATIONS

THE SUN & THE STARS CONTENT EXPECTATIONS STARS What are stars? Are they all the same? What makes them different? What is our nearest star? THE SUN Why is it important? provides heat and light that we need

Earth-based parallax measurements have led to the conclusion that the Pleiades star cluster is about 435 light-years from Earth.

1 The Pleiades star cluster is a prominent sight in the night sky. All the stars in the cluster were formed from the same gas cloud. Hence the stars have nearly identical ages and compositions, but vary

Measuring Radial & Tangential Velocity. Radial velocity measurement. Tangential velocity measurement. Measure the star s Doppler shift

17. The Nature of the Stars Parallax reveals stellar distance Stellar distance reveals luminosity Luminosity reveals total energy production The stellar magnitude scale Surface temperature determines stellar

The Hertzprung-Russell (HR) Diagram

Name: Partner(s): 1102 or 3311: Desk # Date: The Hertzprung-Russell (HR) Diagram Purpose Reproduce Hertzsprung s and Russell s simultaneous discovery Investigate the relationships between luminosity, mass,

Astronomy Part 1 Regents Questions

Regents Questions 1. The Sun revolves around the center of A) Polaris B) Aldebaran C) Earth D) the Milky Way Galaxy 4. In which sequence are the items listed from least total mass to greatest total mass?

Unit 2 Lesson 2 Stars. Copyright Houghton Mifflin Harcourt Publishing Company

Florida Benchmarks SC.8.N.1.6 Understand that scientific investigations involve the collection of relevant empirical evidence, the use of logical reasoning, and the application of imagination in devising

Observing the Stars. radius: the distance from the center of a sphere to its surface; half its diameter. VY Canis Majoris

Think about the night sky. What can you see? Stars might be one of the first things to come to mind. There are too many stars for scientists to count them all. There are probably billions and billions

ASTRONOMY QUIZ NUMBER 11

ASTRONOMY QUIZ NUMBER. Suppose you measure the parallax of a star and find 0. arsecond. The distance to this star is A) 0 light-years B) 0 parsecs C) 0. light-year D) 0. parsec 2. A star is moving toward

Astronomy-part 3 notes Properties of Stars

Astronomy-part 3 notes Properties of Stars What are Stars? Hot balls of that shine because nuclear fusion (hydrogen to helium) is happening at their cores. They create their own. Have different which allow

Astr 2320 Tues. March 7, 2017 Today s Topics

Astr 2320 Tues. March 7, 2017 Today s Topics Chapter 13: Stars: Binary Stars Determination of Stellar Properties vi Binary Stars Classification of Binary Stars Visual Binaries Both stars visible Only one

Life Cycle of a Star - Activities

Name: Class Period: Life Cycle of a Star - Activities A STAR IS BORN STAGES COMMON TO ALL STARS All stars start as a nebula. A nebula is a large cloud of gas and dust. Gravity can pull some of the gas

Characterizing Stars

Characterizing Stars 1 Guiding Questions 1. How far away are the stars? 2. What evidence do astronomers have that the Sun is a typical star? 3. What is meant by a first-magnitude or second magnitude star?

Characterizing Stars. Guiding Questions. Parallax. Careful measurements of the parallaxes of stars reveal their distances

Guiding Questions Characterizing Stars 1. How far away are the stars? 2. What evidence do astronomers have that the Sun is a typical star? 3. What is meant by a first-magnitude or second magnitude star?

LAB: Star Classification

Name: LAB: Star Classification INTRODUCTION: Like most scientists, astronomers like to categorize the Universe around them, and stars are no exception. Here s how astronomers classify stars into different

The Sun s center is much hotter than the surface. The Sun looks large and bright in the sky. Other stars look much smaller.

The Sun A star is a huge ball of hot, glowing gases. The Sun is a star. The width of the Sun is equal to the width of 100 Earths placed side by side. The Sun is extremely hot. The surface of the Sun has

ASTRONOMY 1 EXAM 3 a Name

ASTRONOMY 1 EXAM 3 a Name Identify Terms - Matching (20 @ 1 point each = 20 pts.) Multiple Choice (25 @ 2 points each = 50 pts.) Essays (choose 3 of 4 @ 10 points each = 30 pt 1.Luminosity D 8.White dwarf

ACTIVITIES for Grades 9-12

ACTIVITIES for Grades 9-12 BEFORE YOUR VISIT Online Video: Journey to the Stars Trailer and Prelude To prepare for your Museum visit, watch the trailer and the prelude with your students. Class Discussion:

Which letter on the timeline best represents the time when scientists estimate that the Big Bang occurred? A) A B) B C) C D) D

1. The red shift of light from most galaxies is evidence that A) most galaxies are moving away from Earth B) a majority of stars in most galaxies are red giants C) the light slows down as it nears Earth

Test ABCDE. 1. What is the oldest era on the geological timescale? A. Precambrian B. Paleozoic C. Mesozoic D. Cenozoic

Test - 8.8 ABCDE 1. What is the oldest era on the geological timescale? A. Precambrian B. Paleozoic C. Mesozoic D. Cenozoic 2. A light-year is defined as- F. the distance from Earth to the Sun. G. the

Miami Dade County Public Schools Educational Transformation Office and the Division of Academics: Department of Science

Unit 5 Assessment Comprehensive Science III Directions: Read through the questions carefully and select the best answer choice on your bubble sheet. 1. Space exploration has advanced our knowledge of the

Photosphere. Bob Stein s simulation movie. Chromosphere. Corona. Solar wind

Photosphere Layer from which light escapes directly into space. Photosphere is what we see. Light from lower layers scatters. Q: Suppose we observe the neutrinos from the sun. The size of the sun when

AST 301 Introduction to Astronomy

AST 301 Introduction to Astronomy John Lacy RLM 16.332 471-1469 lacy@astro.as.utexas.edu Myoungwon Jeon RLM 16.216 471-0445 myjeon@astro.as.utexas.edu Bohua Li RLM 16.212 471-8443 bohuali@astro.as.utexas.edu

Chapter 15: Surveying the Stars

Chapter 15 Lecture Chapter 15: Surveying the Stars Surveying the Stars 15.1 Properties of Stars Our goals for learning: How do we measure stellar luminosities? How do we measure stellar temperatures? How

Chapter 21: Stars Notes

Branches of Earth Science Chapter 21: Stars Notes Astronomy: The study of planets, stars, and other objects in space. Lithosphere: the land masses of earth o Litho means rock Hydrosphere: waters of the

Astro 1050 Mon. Apr. 3, 2017

Astro 1050 Mon. Apr. 3, 017 Today: Chapter 15, Surveying the Stars Reading in Bennett: For Monday: Ch. 15 Surveying the Stars Reminders: HW CH. 14, 14 due next monday. 1 Chapter 1: Properties of Stars

Measuring the Stars. The measurement of distances The family of distance-measurement techniques used by astronomers to chart the universe is called

Measuring the Stars How to measure: Distance Stellar motion Luminosity Temperature Size Evolutionary stage (H-R diagram) Cosmic distances Mass The measurement of distances The family of distance-measurement

Temperature, Blackbodies & Basic Spectral Characteristics.

Temperature, Blackbodies & Basic Spectral Characteristics. Things that have one primary temperature but also exhibit a range of temperatures are known in physics as blackbodies. They radiate energy thermally.

29:50 Stars, Galaxies, and the Universe First Hour Exam October 6, 2010 Form A

29:50 Stars, Galaxies, and the Universe First Hour Exam October 6, 2010 Form A There are 32 questions. Read through each question and all the answers before choosing. Budget your time. No whining. Walk

The Hertzsprung Russell Diagram. The Main Sequence

The Hertzsprung Russell Diagram H R diagram plots stellar luminosity against surface temperature Luminosity ranges 10-4 10 4 L. Temperature ranges by a factor of 10 increases to the left spectral sequence

Measuring Radial & Tangential Velocity. Radial velocity measurement. Tangential velocity measurement. Measure the star s Doppler shift

17. The Nature of the Stars Parallax reveals stellar distance Stellar distance reveals luminosity Luminosity reveals total energy production The stellar magnitude scale Surface temperature determines stellar

Chapter 15 Surveying the Stars Pearson Education, Inc.

Chapter 15 Surveying the Stars 15.1 Properties of Stars Our goals for learning: How do we measure stellar luminosities? How do we measure stellar temperatures? How do we measure stellar masses? 1. How