M101, Robert.S

M101

M101, Robert.S

M101

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Description

M101 is a large galaxy, with a diameter of 170,000 light-years. By comparison, the Milky Way has a diameter of 100,000 light years. It has around a trillion stars, twice the number in the Milky Way. It has a disk mass on the order of 100 billion solar masses, along with a small central bulge of about 3 billion solar masses.

M101 has a high population of H II regions, many of which are very large and bright. H II regions usually accompany the enormous clouds of high density molecular hydrogen gas contracting under their own gravitational force where stars form. H II regions are ionized by large numbers of extremely bright and hot young stars; those in M101 are capable of creating hot super bubbles.

Comments

Revisions

  • M101, Robert.S
    Original
  • M101, Robert.S
    C
  • M101, Robert.S
    D
  • M101, Robert.S
    E
  • Final
    M101, Robert.S
    F

Histogram

M101, Robert.S

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