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Perseus is a constellation in the northern sky, ... it is a blue-white supergiant 26–27 times the radius of the Sun and 47,000 times its luminosity.
Mirfak is the brightest star in the constellation of Perseus (top center). The spectrum of Alpha Persei matches a stellar classification of F5 Ib, [2] revealing it to be a supergiant star in the latter stages of its evolution. It has a similar spectrum to Procyon A, though the latter star is much less luminous.
It lies somewhat further away than the centres of the Double Cluster open clusters, but definitely within the Per OB1 association and the Perseus Arm of the galaxy. [5] S Persei is a double star. The red supergiant has an A0 11th magnitude companion at 69". [26] There are also several other 8th to 10th magnitude stars within half a degree of S ...
The Alpha Persei Cluster, also known as Melotte 20 or Collinder 39, is an open cluster of stars in the northern constellation of Perseus. To the naked eye, the cluster consists of several blue-hued spectral type B stars. The most luminous member is the ~2nd magnitude yellow supergiant Mirfak, also known as Alpha Persei.
XX Per is a red supergiant of spectral type M4Ib with an effective temperature below 4,000 K. It has a large infrared excess, indicating surrounding dust at a temperature of 900 K, but no masers have been detected. [14] [15] XX Persei has a mass of 16 solar masses, above the limit beyond which stars end their lives as supernovae. [6]
V520 Persei is a blue supergiant member of NGC 869, one of the Perseus Double Cluster open clusters.It is an irregular variable star. At a magnitude of 6.55, V520 Persei is the brightest member in either NGC 869 or NGC 884, although the brighter HD 13994 lies in the foreground along the same line of sight.
The Double Cluster in Perseus (lower left of center, wide angle view) Greek astronomer Hipparchus cataloged the object (a patch of light in Perseus) as early as 130 BCE. To Bedouin Arabs the cluster marked the tail of the smaller of two fish they visualized in this area, and it was shown on illustrations in Abd al-Rahman al-Sufi's Book of Fixed Stars. [4]
9 Persei is a single [11] variable star in the northern constellation Perseus, located around 4,300 light years away from the Sun. It has the Bayer designation i Persei; 9 Persei is the Flamsteed designation. This body is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of about 5.2.