Coronet Cluster
| [Coronet Cluster] | |
|---|---|
| Observation data (J2000.0 epoch) | |
| Right ascension | 19h 1m 54s |
| Declination | −36° 57.2′ |
| Distance | 420-550 ly (130-170 pc) |
| Apparent magnitude (V) | 8 |
| Apparent dimensions (V) | 26 arcmin |
| Physical characteristics | |
| Mass | unknown M☉ |
| Radius | 2.1 light years |
| Estimated age | 0.5-2 million years |
| relative scarcity of circumstellar discs | |
| Other designations | R CRA, G359.93-17.85 by BDB2003 catalog |
| Associations | |
| Constellation | Corona Australis |
The Coronet cluster, also known as the CrA is a small open cluster located about 170 parsecs away in the southern constellation Corona Australis, isolated at the edge of the Gould Belt.[1][2] The Coronet cluster is 3.5 times closer to the Earth than the Orion Nebula Cluster.[3] The cluster center is composed of mostly young stars.[4]
References
- ^ http://apod.nasa.gov/apod/ap070921.html
- ^ Sicilia-Aguilar, Aurora; Henning, Thomas; Juha´sz, Attila; Bouwman, Jeroen; Garmire, Gordon; Garmire, Audrey (10 November 2008). "VERY LOW MASS OBJECTS IN THE CORONET CLUSTER: THE REALM OF THE TRANSITION DISKS" (PDF). The Astrophysical Journal. arXiv:0807.2504. Bibcode:2008ApJ...687.1145S. doi:10.1086/591932.
- ^ "Coronet Cluster: A Neighbor of Star Formation (A region of star formation about 420 light years from Earth.)". Retrieved 10 Jan 2013.
- ^ Sicilia-Aguilar, Aurora. "Star formation and disk evolution history of a sparse region: The Coronet cluster" (PDF). Retrieved 10 Jan 2013.
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