What is the Alpha Persei Cluster?
Q: What is the Alpha Persei Cluster?
A: The Alpha Persei Cluster is an open cluster located in the Perseus constellation.
Q: What color are the stars in the Alpha Persei Cluster visible to the naked eye?
A: The stars in the Alpha Persei Cluster visible to the naked eye are of blue spectral type B.
Q: Which star in the Alpha Persei Cluster is the most luminous member?
A: The most luminous member of the Alpha Persei Cluster is the ~2nd magnitude white-yellow supergiant Mirfak, also known as Alpha Persei.
Q: What method was used to determine the distance of the Alpha Persei Cluster from Earth?
A: The Hipparcos satellite and infrared color-magnitude diagram fitting were used to determine the distance of the Alpha Persei Cluster from Earth.
Q: What is the estimated distance of the Alpha Persei Cluster from Earth?
A: The estimated distance of the Alpha Persei Cluster from Earth is ~172 parsecs.
Q: Why is the Alpha Persei Cluster important in the cosmic distance ladder?
A: The Alpha Persei Cluster is important in the cosmic distance ladder because its distance has been independently analyzed and agreed upon.
Q: What is the estimated age of the Alpha Persei Cluster?
A: The estimated age of the Alpha Persei Cluster is about 50-70 million years.
