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Bringing E.T. into Your Classroom The Search for Extra solar Planets

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Bringing E.T. into Your Classroom The Search for Extra solar Planets Gary Lawhon Dave Baltenberger Nebular theory of solar system formation would lead us to believe ... – PowerPoint PPT presentation

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Title: Bringing E.T. into Your Classroom The Search for Extra solar Planets


1
Bringing E.T. into Your ClassroomThe Search for
Extra solar Planets
  • Gary Lawhon
  • Dave Baltenberger

2
Nebular theory of solar system formation would
lead us to believe planets should be associated
with most stars
  • .

3
Why are these planets so hard to find?
4
Planets are really small
  • If the Sun is a grapefruit on the West coast of
    US
  • then
  • The Earth is a pinhead about 15 meters away and
    Jupiter is a marble 80 meters away
  • and
  • The nearest star to our solar system is on the
    East coast.so
  • You are trying to find a pinhead on a grapefruit
    about 2500 miles away plus the star is a billion
    times brighter than its planets

5
How can we find Extra solar Planets?
  • Direct Detection
  • Despite advances in technology it is beyond
    modern telescopes to find extrasolar planets very
    easily using direct detection

6
How can we find Extra solar Planets?
  • If we cant just find these extra solar planets
    in a telescope how do we know they exist?
  • Indirect Evidence
  • Measure properties of the star and reveal the
    presence of extra solar planets

7
Does a Planet influence its Star?
  • All objects in the solar system orbit a common
    center of mass
  • Sun is so large that this center of mass is
    inside the Sun

8
Center of Mass
9
Orbiting planet causes its star to wobble
10
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11
Make Your Own Wobbling Sun
12
Can We Detect Extrasolar Planets using other
Methods?
  • Transit method A planet passing it front of its
    star produces a change in brightness of 1/10,000
    lasting for 2 to 16 hours
  • Can we detect that?

Credit NASA
13
Kepler mission
  • The Kepler spacecraft lifted off March 6, 2009

14
Kepler field of view
15
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17
http//archive.stsci.edu/prepds/kepler_hlsp/
18
Excel graph from Kepler data
19
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20
http//lasp.colorado.edu/education/outerplanets/ex
oplanets.phpkepler
21
http//astro.unl.edu/naap/esp/animations/transitSi
mulator.html
22
http//kepler.nasa.gov/multimedia/Interactives/kep
lerFlashAdvDiscovery/
23
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planethunters.org
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31
Detecting Extra solar Planets
  • Use star wobble to detect planets
  • Wobbling star models
  • Kepler looks for dimming of the star to detect
    presence of extra solar planet
  • Use Kepler data to create Excel graphs to
    identify pattern of star dimming
  • Use websites to recreate hunt for extra solar
    planets

32
GPS Standards
  • Astronomy SAST6 Students will explore
    connections between cosmic phenomena and
    conditions necessary for life.
  • Physical Science - SPSP9 Students will
    investigate the properties of waves.
  • f) Explain the Doppler Effect in terms of
    everyday interactions.
  • (Doppler shift of spectral lines radial
    velocity)
  • Biology SB1 Students will analyze the nature
    of relationships between structures and functions
    in living cells.
  • d) Explain the impact of water on life
    processes.
  • SB5 Students will evaluate the role of natural
    selection in the development of the theory of
    evolution.
  • (concepts of what defines the habitable zone
    can be brought in here)

33
GPS Standards
  • Earth Systems SES1 Students will investigate
    the composition and formation of Earth systems,
    including Earths relationship to the solar
    system.
  • (habitable zone)
  • Chemistry
  • SC3 Students will use modern atomic theory to
    explain the characteristics of atoms.
  • f) Relate light emission and movement of
    electrons to element identification.
  • (spectroscopy and detection by radial
    velocity/Doppler shift)
  • SC4 Student will use the organization of the
    Periodic Table to predict properties of elements.
  • b) Compare and contrast trends in the chemical
    and physical properties of elements and their
    placement on the Periodic Table.
  • (concepts of Habitable Zone, carbon-based life
    vs. thoughts on silicon-based life. Also water
    vs. ammonia)

34
GPS Standards
  • Environmental Science SEV2 Students will
    demonstrate an understanding that the Earth is
    one interconnected system.
  • a) Describe how the abiotic components (water,
    air, and energy) affect the biosphere.
  • (Habitable Zone)

35
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36
Astronomy Themed Summer Workshops Chem.,
Physics, Phys. Sci. GPS
  • High School Teachers Only This Year
  • Search for Life in the Universe
  • Sun Earth Connection Space Weather
  • Stars Formation of the Elements
  • Crash, Bang, Galaxies!
  • Email gears_at_colstate.edu for information
  • http//cheller.phy.georgiasouthern.edu/gears

This workshop funded by NASA Office of Education
Grant NNX09AH83A and supported by the Georgia
Department of Education, Columbus State
University, and Georgia Southern University
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