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Friday, February 2, 2018

Pegasus Galaxy

NGC 7331 or Pegasus Galaxy
    New General Catalogue 7331 or Pegasus is otherwise called Caldwell 30. It is a unbarred spiral galaxy located at a distance of 40 million light-years away from our earth. It was first discovered by famous astronomer William Herschel in the year 1784. It is considered as one of the brightest member among the NGC 7331 group of galaxies. 

     The Pegasus is considered as twin sister of our Milkyway galaxy because of similar size and structure. It has a central bulge which is rotating in the opposite direction to the rest of the disk. There is a supernova called SN 1959D was the first supernova discovered and identified within this galaxy (Pegasus). The supernova was discovered by Milton Humason and H.S Gates at Palomar Observatory. Most recent discovered supernovae are SN 2013bu and SN 2014C. This galaxy was studied by visible and infrared images. The confirmation of similar size of Milkway and Pegasus was confirmed after 2000.  The approx size of the galaxy is about 120,000 light year.

This image was taken by Vicent Peris at Calar Obervatory in southern spain


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