StarCraft

General rules

1930, Swiss astronomer Trump has proved the existence of Stars. All kinds of diffuse clouds, planetary nearsess, dust, etc. in the stars are all matters. For low silver latitude, the interstellar phenomenon is more serious. This is similar to the reasons why you are in the sun. The observation of the distant star must deduct the influence of interstellar redization to get the correct celestial distribution information.

The known absorption characteristics include 2175 å of the peak (Star Dust DiB), 3.1 μm water ice, and the like.

The V-belt extremns in the UBV system near the solar system generally uses 0.7 - 1.0 mAg / KPC, which is 1 kPc, which will rise by a star or the like, which will increase the stars (weak 2.5 times).

Embodo Curve

Elimination A _λ at wavelength λ is defined as:

, where f _λ is the observed radiation flow, f _λ ⁰ is the radiation flow measured when unblocked. It is noted that the latter is difficult to measure directly, and thus a series of different methods are derived.

The extinction curve is a curve of a _λ (or number of penders) to 1 / λ.