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1 of 5© Boardworks Ltd 2010
2 of 5© Boardworks Ltd 2010 Links to the current IB specifications Topic 11: Wave phenomena Describe what is meant by the Doppler effect E2 Stellar radiation and stellar types E.2.7 Explain how atomic spectra may be used to deduce chemical and physical data for stars. E4 CosmologyE.4.3 Suggest that the red-shift of light from galaxies indicates that the universe is expanding. E6 Galaxies and the expanding universe E.6.2 Explain the red-shift of light from distant galaxies
3 of 5© Boardworks Ltd 2010 A new planetary system At least five planets (exoplanets) have been found orbiting star HD 10180, 127 light years away. Astronomers have discovered a new planetary system that is the largest ever found and very similar to our Solar System. It is very difficult to observe exoplanets directly. They are small, don’t produce their own light, and are often hidden by their host star’s light. Astronomers therefore use indirect methods to detect them. One common method is radial velocity tracking.
4 of 5© Boardworks Ltd 2010 Exoplanet hunting
5 of 5© Boardworks Ltd 2010 Red shift and the Doppler effect
1 of 5© Boardworks Ltd of 5© Boardworks Ltd 2010 Links to the current (2006) specifications AQA13.7 What do we know about the origins of the Universe.
30.1 notes Characteristics of Stars Std 1d: Know the evidence indicating that the planets are much closer to Earth than the stars are. Std 2d: Know that.
Lecture 34. Extrasolar Planets. reading: Chapter 9.
© Boardworks Ltd of 8. © Boardworks Ltd of 8 Is the Universe expanding?
What is the DOPPLER EFFECT? Doppler and Sound When sound waves are made they spread out evenly in all directions like ripples on a pool of water
Formation of the Universe The Big Bang Theory. The Big Bang All matter & energy in the universe was compressed into a tiny volume 13.7 billion years ago,
Exoplanets Or extra-solar planets have recently been discovered. There are important to find to help fill in the Drake Equation that determines the probability.
Universe What do we know about the universe?. Doppler Effect The observed change in the frequency of sound or electromagnetic waves due to the relative.
This exoplanet orbiting 51 pegasi is being vaporized by its’s parent star.
What Can Spectroscopy Tell Us?. Atom or Molecular Fingerprints Every atom or molecule exists in its own unique energy state. This energy state is dependent.
Copyright © 2012 Pearson Education, Inc. Extrasolar Planetary Systems.
AST 111 Exoplanets I. Exoplanets Exoplanets: Planets orbiting stars other than the Sun.
David - Doppler He is known for the principle he proposed he first proposed in concerning the colored light of double stars in He hypothesized that.
THE BIG BANG THEORY The Expanding Universe. Review Human demonstration.
Lecture 14: Searching for planets orbiting other stars III: Using Spectra 1.The Spectra of Stars and Planets 2.The Doppler Effect and its uses 3.Using.
Mr. Z’s “Waves” Unit Describe what is meant by the Doppler effect AIM: What is the Doppler effect?
Today’s APODAPOD Begin Chapter 8 on Monday– Terrestrial Planets Hand in homework today Quiz on Oncourse The Sun Today A100 – Ch. 7 Extra-Solar Planets.
THEORIES OF UNIVERSE FORMATION. Studying Space Cosmology – the study of the origin, structure, and future of the universe Astronomers study planets, stars,
Atoms & Starlight (Chapter 6). Student Learning Objectives Describe properties and behavior of atoms Analyze types of spectra Explain the affects of light.
The Doppler Effect Solar System Day 3. Solar System Day 3- Objectives Describe how the _____________________ can be used to study the movement of objects.
Red Shift – Expanding Universe 5 a day. 1. If a star or galaxy is moving away from us, its wavelength will shift which way? 2. If a star or galaxy is.
The Big Bang Theory Not this one…. The Theory The Big Bang describes how: – a massive explosion created the universe – the cooling and expansion of.
Red Shift, Blue Shift Radial velocity – the movement of an object toward or away from us An Observer Velocity away Velocity toward.
Extrasolar Planets Exo planets are planets outside the Solar System. They orbit another star. 861 confirmed…18,000 identified, but likely billions exist.
Midterm Exam Material Covered –Chapter 1 to 6 Format of Exam –Multiple-Choice Questions: 40 to 50 questions –Facts –Concepts –Reasoning –Quantitative --
ASTR Spring 2008 Joel E. Tohline, Alumni Professor 247 Nicholson Hall [Slides from Lecture27]
Extrasolar planets. Detection methods 1.Pulsar timing 2.Astrometric wobble 3.Radial velocities 4.Gravitational lensing 5.Transits 6.Dust disks 7.Direct.
Extrasolar planets. Detection methods 1.Pulsar Timing Pulsars are rapidly rotating neutron stars, with extremely regular periods Anomalies in these periods.
Why is Light so useful in Astronomy? It can tell us many properties of planets and stars: –How warm / hot they are (Surface temperature) –What they’re.
Intro to Astronomy Through the early history of civilization, people made observations about the night sky, sun, and moon. They tried to explain what they.
Extrasolar Planets Instructor: Calvin K. Prothro; P.G., CPG (John Rusho) Section 003: F343, T Th 11:00 p.m. to 12:15 p.m. Section 004: F381, T Th 12:30.
Copyright © 2012 Pearson Education, Inc. How do we detect planets around other stars?
Other Planetary Systems. Detecting Extrasolar Planets Extrasolar planets are planets orbiting other stars. We usually detect these planets by the.
Origin of the Universe. Origin and Age of the Universe Humans have observed celestial objects for thousands of years contemplating their place in the.
Electromagnetic Spectrum. Speed of Light: 186,000 miles/second 300,000 km/sec (300,000,000 m/sec)
Extrasolar Planet Search OGLE-2005-BLG-390Lb The Age of Miniaturization: Smaller is Better OGLE-2005-BLG-390Lb is believed to be the smallest exoplanet.
P1.5.4 Red-shift AQA GCSE Science A. There are two main pieces of evidence for the Big Bang: 1.The expansion of the universe 2. Cosmic microwave background.
An Expanding Universe Redshift, Blueshift and the Doppler Effect.
Lecture Outline Chapter 10: Other Planetary Systems: The New Science of Distant Worlds © 2015 Pearson Education, Inc.
Kepler Mission. Transit Method Planetary transits cause some light from a star to be blocked. The change in light is small for exoplanets. –Hard to detect.
Team D: Kaniesha Stern Charles Ammon Jowers III Tracy Diggs.
Chapter 30 Section 4 Handout The Big Bang Theory.
Viewing the Universe. 8Astronomers gather information about objects throughout the universe by detecting various kinds of energy given off by these objects.
UNIT NINE: Matter and Motion in the Universe Chapter 26 The Solar System Chapter 27 Stars Chapter 28 Exploring the Universe.
ORIGINS …. LEARNING GOALS I WILL BE ABLE TO EXPLAIN THE THEORY FOR THE FORMATION OF OUR SOLAR SYSTEM. I WILL BE ABLE TO EXPLAIN THE BIG BANG THEORY.
Space Explorations Science 9. THE SPECTROSCOPE: NEW MEANINGS IN LIGHT Topic 3.
28 July 2005 AST 2010: Chapter 171 The Stars: A Celestial Census.
1 of 38© Boardworks Ltd of 38 © Boardworks Ltd of 38 The Solar System is about 4.6 billion years old. It was formed from a nebula – an.
What can electromagnetic waves tell us about the movement of planets, stars, and galaxies?
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