astronomy division c
DESCRIPTION
Science Olympiad. Astronomy Division C. Guidelines. Description: Students will demonstrate an understanding of the basic concepts of mathematics and physics relating to stellar evolution and Type II Supernova. A team of up to: 2 Approximate Time: 50 minutes. Guidelines. - PowerPoint PPT PresentationTRANSCRIPT
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AstronomyDivision C
Science Olympiad
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Guidelines
Description: Students will demonstrate an understanding of the basic concepts of mathematics and physics relating to stellar evolution and Type II Supernova.
A team of up to: 2 Approximate Time: 50 minutes
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Guidelines
Event Parameters: Each team may bring either 2 laptops or 2 3-ring binder containing info in any form from any source
Materials must be 3-hole punched and inserted into the rings
Each team member is permitted to bring a programmable calculator
NO INTERNET ACCESS!
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The Competition
Using H-R Diagrams, spectra, light curves, motions, cosmological distance equations and relationships, stellar magnitudes and classification, multi-wavelength images (X-Ray, UV, optical, IR, radio), charts, graphs, animations and DS9 imaging analysis software, students will answer questions
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Competition (Part A)
Stellar evolution, including spectral features and chemical composition, luminosity, blackbody radiation, color index (B-V), and H-R Diagram transitions, stellar nurseries and star formation, protostars, main sequence stars
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Competition (Part A) cont.
Cepheid variables, semiregular variables, red supergiants, neutron stars, magnetars, pulsars, Wolf-Rayet stars, stellar mass black holes, x-ray binary systems and Type II Supernovas
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Stellar Evolution
Lifespan of a star and radical changes
Dependent on mass Ranges from few million years to
trillions of years All stars born from collapsing clouds
of gas and dust
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Star Classification
HR Diagram
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Kepler’s Laws
Kepler’s First Law: Planets move around the sun in ellipses, with the Sun in one focus
Kepler’s Second Law: the line connecting a planet to the Sun sweeps equal areas in equal times
Kepler’s Third Law: The square of a planet’s sidereal period (P) around the Sun is directly proportional to the cube of the length of its orbit’s semimajor axis (a)
P2 = a3, planet closer to the Sun has a shorter year
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Kepler’s Laws cont.
Use laws, rotation and circular motion to answer questions relating to orbital motions of binary and multiple star systems
Use parallax, spectroscopic parallax, and the distance modulus to calculate distances to Type I and II Cepheids
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Cepheid variables
Cepheid variable stars expand and contract in a repeating cycle of size changes
Change in size is comparable with change in brightness
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Competition (Part c)
Identify, know the location and answer questions relating to the content areas outlined above for following object: Cas A, IGR J17091, NGC 6888/WR 136,
PSR J0108-1431, Cygnus X-1, SXP 1062, M1, V838 Mon, Delta Cep, a Orionis, SN 2010JL, NGC 3582, LHa115-N19, Antares/Rho Ophiuchi cloud complex and IC 1396
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Cassiopeia A (Cas A)
Remnant of a massive star that exploded about 300 years ago
10 light years in diameter 50 million degrees
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IGR J17091
Binary system containing stellar mass black hole
Black hole pulling gas away from a companion star
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NGC 6888/WR 136
Nebula
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PSR J0108-1431
Solitary Pulsar located in constellation Cetus
424 Light years away
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Cygnus X-1
Well known galactic X-ray source in Cygnus constellation
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SXP 1062
Supernova in constellation Tucana 180,000 Light years away
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Messier 1 (M1)
Crab nebula
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V838 Monocerotis
Constellation Monoceros Red variable star
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Delta Cep
Binary Star System 887 Light years away
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Alpha Orionis
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Scoring
All questions will have been assigned a predetermined number of points. The highest score wins. Selected questions having differentiated weights will be used to break ties.
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Resources
Aavso.org Chandra.harvard.edu Antwrp.gsfc.nasa.gov Nightsky.ie Atlasoftheuniverse.com Email Astronomy professor from IUN