Title: 14 light years away in the constellation Lepus orbiting the low mass red
114 light years away in the constellation Lepus
orbiting the low mass red star Gliese 229 is the
brown dwarf Gliese 229B. It has a
distance comparable to the orbit of Pluto but a
mass of 20-50 times that of Jupiter.Actually
resolved with the 60 Palomar telescope in 1995
using adaptive optics.
2Spectrum of Gliese 229B
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6How much mass burned per second?
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12Diffusion time for the sun
(less in center, more farther out)
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22htpp//www.uni-freiburg.de/pnb/granmovtext1.html
Matter rises in the centers of the granules,
cools then falls down. Typical granule size is
1300 km. Lifetimes are 8-15 minutes. Horizontal
velocities are 1 2 km s-1. The movie is 35
minutes in the life of the sun
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29The smallest loop is 3 times the size of the Earth
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31More details of the solar corona are visible in
the ultraviolet. Picture from the SOHO
observatory in space
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