Cosmic Perspective Sec. 15.1PowerPoint PresentationSlide 3Slide 4Slide 5Slide 6Slide 7Dealing with Measurement UncertaintiesUncertainties in measurementsSlide 10Spectral Type vs TemperatureSlide 12Slide 13Slide 14Slide 15Monday: Bring laptops - We start Part CPyrometer (Stefan-Boltzmann Law in action on Earth)1QuickTime™ and a decompressorare needed to see this picture.Cosmic Perspective Sec. 15.1Cosmic Perspective Sec. 15.1QuickTime™ and a decompressorare needed to see this picture.QuickTime™ and a decompressorare needed to see this picture.23Explain how knowledge of Stefan-Boltzmann law leads to understanding of temperatures and radii of stars.Summarize the circumstances under which objects produce thermal (continuous), emission line, or absorption line spectra.Explain what is meant by the spectral sequence of stars.OO BB AA FF GG KK MM L L T TOO BB AA FF GG KK MM L L T T4 Explain what is meant by the spectral sequence of stars50 1 2 3 4 5 6 7 8 90 1 2 3 4 5 6 7 8 90 1 2 3 4 5 6 7 8 90 1 2 3 4 5 6 7 8 90 1 2 3 4 5 6 7 8 90 1 2 3 4 5 6 7 8 90 1 2 3 4 5 6 7 8 9 Explain what is meant by the spectral sequence of starshttp://www.astro.uiuc.edu/~kaler/sow/class-g.html6 Explain what is meant by the spectral sequence of stars7Explain what is meant by the spectral sequence of stars.OO BB AA FF GG KK MM L L T TOO BB AA FF GG KK MM L L T TWhat condition in the atom is needed to produce Balmer lines?8QuickTime™ and a decompressorare needed to see this picture.c = 299,792,458 meters per secondDealing with Measurement UncertaintiesDealing with Measurement Uncertainties9Uncertainties in measurementsUncertainties in measurementsQuickTime™ and a decompressorare needed to see this picture.QuickTime™ and a decompressorare needed to see this picture.QuickTime™ and a decompressorare needed to see this picture.10QuickTime™ and a decompressorare needed to see this picture.QuickTime™ and a decompressorare needed to see this picture.QuickTime™ and a decompressorare needed to see this picture.11QuickTime™ and a decompressorare needed to see this picture.Spectral Type vs TemperatureSpectral Type vs TemperatureNote: these relationships are for luminosity class V stars. (See Sec. 15.2 of your text.12QuickTime™ and a decompressorare needed to see this picture.13QuickTime™ and a decompressorare needed to see this picture.14QuickTime™ and a decompressorare needed to see this picture.15QuickTime™ and a decompressorare needed to see this picture.16QuickTime™ and a decompressorare needed to see this picture.QuickTime™ and a decompressorare needed to see this picture.Monday: Bring laptops - We start Part CMonday: Bring laptops - We start Part CIn search of a more accurate way to determine stellar temperatures.5770 K !!!17QuickTime™ and a decompressorare needed to see this picture.Pyrometer (Stefan-Boltzmann Law in action on Earth)Pyrometer (Stefan-Boltzmann Law in action on
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