day_15 - 1604 Tycho Local group 170,000 light years Large...

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October 6, 2010 Exam 2 back, Discovery Channel Program on Supernovas Friday. Wheeler in Edinburgh TX, Rio Grande Valley Science Association, talking to high school students, science teachers, public. Reading Chapter 7 – SN 1987A Astronomy in the News? Nobel Prize in Physics for discovery of graphene. Single atom layer thick hexagonal array of carbon atoms, conducts electricity like copper, conducts heat better than anything, superstrong, and transparent. Electrons move like massless waves (quantum effect) obeying laws of relativistic physics, enables relativistic experiments on a table top. Promise for applications in computers. Pic of the Day – not green clouds, aurora in Alaska
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Goal: To understand the nature and importance of SN 1987A for our understanding of massive star evolution and iron core collapse.
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Kepler SN 1987A first naked eye supernova since Kepler’s in
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Unformatted text preview: 1604 Tycho Local group 170,000 light years Large Magellanic Cloud, irregular galaxy (color) Large Magellanic Cloud, larger scale LMC negative 2-22-87 Rob McNaught patrol photos - the day before 2-23-87 The rst known photo of SN 1987A hours after shock breakout 2-24-87 One day later 5-20-87 Near maximum light 8-23-87 About when I saw it LMC w/arrow One Minute Exam When SN 1987A exploded, where would have been a good place to have seen it with your naked eye? Texas Japan Russia Argentina Photo of progenitor star (giraffe) Close-up Stars 1, 2, 3 Star 1 blue supergiant Star 2 in LMC, but light years from Star 1 Star 3 Star 1 - exploded Star 2 Star 3 SN 1987A SINS Kirshner, et al. Elongated ejecta - jet? Most rapidly moving ejecta hitting dense knots in rings Movie of Hubble data 1994 - 2006 Updated to 2010...
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This note was uploaded on 10/23/2010 for the course AST 47700 taught by Professor Wheeler during the Fall '10 term at University of Texas at Austin.

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day_15 - 1604 Tycho Local group 170,000 light years Large...

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