ASTR 114 Lecture Notes - Lecture 25: Inverse-Square Law, Solar Phenomena, Apparent Magnitude
10 Jan 2020
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Document Summary
The less massive star is approaching us at the moment. A loop of gas following the magnetic field lines between sunspots poles is a prominence. Energy from the core of the sun first travels slowly through a convection zone and then much faster through the outer radiation zone. On the main sequence, almost all stars have radii between about 0. 1 and 10 times the sun. A type b9 star is hotter than a type a0 true. An o-star has a hotter surface temperature than the sun. Its emission peaks in the blue part of the spectrum. They are fairly bright, but appear dark against the even brighter background of the surrounding photosphere. Star x is a spectral type f, while star y is a spectral type k. therefore, star x is more massive than star y. The sun"s surface, as we see it with our eyes, is called the.
