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> Double cluster in Perseus

Double cluster in Perseus

author: Tom Davis/Novapix

reference: a-aou08-69013

Image Size 300 DPI: 13 * 13 cm

The double cluster in the constellation Perseus, normally known by its Greek designation transliterated. chi Persei (NGC 884, on the left) and h Persei (NGC 869) are about 7000 light-years away and less than 100 light-years apart. Although open clusters are quite common, this pair is exceptional due to the large number of young bright O and B stars in each, and their closeness.

Keywords for this photo:

ASTRONOMY - B STAR - DOUBLE CLUSTER - NGC 869 - NGC 884 - O STAR - OPEN CLUSTER - PERSEUS - STAR - STAR CLUSTER - TWINKLING - YOUNG STAR -