team d: kaniesha stern charles ammon jowers iii tracy diggs

Team D:Kaniesha Stern

Charles Ammon Jowers IIITracy Diggs

Exo means outside of and Planet means Wanderer

Exoplanets are planets outside of our solar system

Alex Wolszczan discovered the first exoplanet

51 Peg was the second exoplanet discovered

Kepler Satellite Mission

450 exoplanets have been confirmed

Find habitable Planets

Find signs of other life forms

What else may we find in the universe

• Kepler’s First Law: The orbit of every planet is an ellipse with the sun at one of its foci

• Kepler’s Second Law:

P2=a3

• Kepler’s Third Law: A planet moves the fastest when it’s closest to a star and Slowest when its furthest away from it’s star

0.24

0.62

1.0

1.88

11.86 29.46

84.0 164.8

4.23

51 Peg

Introduction of Our Solar System

Transit detection is a way of discovering Exoplanets by viewing them at the moment of an eclipse

Imaging is another way of discovering exoplanets by using a camera to take a picture

Radial Velocity is used to determine Doppler Shift

Doppler effect is the shift in frequency and wavelength of a wave

Spectrographs are used for this method

Wien’s Law states that hotter bodies emit at shorter wavelengths, and a higher frequency; cooler bodies emit at longer wavelengths and a lower frequency

If a body emits in the blue, would you expect it to be hotter or colder than a body that emits in the red?

Object: Cool star Sun Hot star

Temperature:

4,000 K 5,777 K 50,000 K

There are five variables that we used to describe planetary orbits, which are:• Mean Anomaly• Mass• Period• Eccentricity• Longitude of

Periastron

Spectroscopy interaction of matter

and radiation. Spectrographs

instruments designed to perform spectroscopy, by dispersing light.

Emission Lines Absorption Lines

Behaviors of Light Refraction Reflection Diffraction

Earth has a blue sky and green grass …

Why is the sky blue?

Answer:The sky scatters more blue

light than it does red light

Different Types of Grass

Acetone (CH3)2CO

Spectrograph Measured what

would appear on the absorption spectrum

Why is the grass green?

Answer:Chlorophyll reflects yellow

and green light infrared light; but absorbs blue

and red light

Red edge is the signature of vegetation on earth

Astronomers will look for red edge on other planets to see if they may have life —Image courtesy NASA/Johns Hopkins University Applied

Physics Laboratory/Carnegie Institution of Washington

Red Edge and How it can be used to detect life?

Search for life outside of our Solar System has begun

Besides Earth, there is no life on other planets in our Solar System

Radial Velocity and Doppler effect, Transit Detection and Imaging are detection methods used to discover exoplanets

Red edge is a signature of life on a planet, a characteristic that our planet has ; which will allow astronomers to find life on other planets.

SEECoS and the Eberly College of ScienceNorman Freed-Dean of Eberly College of

ScienceMs. Jody Markley -UBMS DirectorMr. Derek James -UBMS Assistant DirectorSuvrath Mahadevan -Assistant ProfessorArpita Roy -Research AssistantMr. Eric Speight –Teacher

AND….

All the UBMS Staff and Faculty