Messier 100

Die Spiralgalaxie Messier 100
the spiral galaxy Messier 100

Messier 100 (also called NGC 4321) is +9.40 likes bright spiral galaxy with a surface expansion of 7,5 ' × 6.1 ' in the constellation hair of the Berenike.

Cepeheiden in M 100
M 100 is a member of the outermost northern part of the Virgo galaxy cluster. As nearly all spiral galaxies is M 100 thus far from the closely settled center of the galaxy cluster. Under the spiral galaxies of this heap M 100 is the brightest. It is of the Hubble type sports club, and its galactic level is bent around more than 60 degrees against the line of sight, so that we have a very good view on the galactic disk. Thus M becomes 100 an ideal investigation object for all questions, which concern spiral galaxies of the Virgo heap. In particular in the H 0 keys Project for the measurement of the Hubble constant of H 0 with the Hubble Weltraumteleskop M was dissolved of 100 therefore as the first spiral galaxy this heap into single stars. In the context of this investigation Cepheiden could be identified, by whose period luminosity relationship the distance of M could be determined 100 to 55 million light-years. This distance is probably somewhat smaller than the distance of the heap center (see also [1]).

Within Messier 100 SN 1979C , which is unusual because of their x-ray continuing this very day , is the supernew facts.

M 100 is besides the main galaxy of a small sub-group within the Virgo heap, to which further primarily dwarf galaxies belong.

Constellation hair of the Berenike
Rektaszension 12h 22m 54,00s
declination +15° 49 ' 00.0 "
distance 5.5 × <math> 10^7< /math>Light-years
visual brightness +9.40 surface expansion
7.5 ' × 6.1 ' likes

Web on the left of

M100 with SEDS


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