Coronet Cluster

Coronet Cluster
Coronet Cluster
	The Coronet Cluster, R CrA is the central dominantly bright star, with reflection nebulae NGC 6726/NGC 6727 lit by TY CrA and HD 176386 to upper right and parts of IC 4812 at the lower right.
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 R CrA cluster after its best-known member, 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] The variable T Coronae Australis is also a member, only one arc minute from R CrA.

References

"APOD - Coronet in the Southern Crown". Retrieved 2016-12-30.
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. 687 (2): 1145–1167. arXiv:0807.2504. Bibcode:2008ApJ...687.1145S. doi:10.1086/591932. S2CID 119208696.
"Coronet Cluster: A Neighbor of Star Formation (A region of star formation about 420 light years from Earth.)". Archived from the original on 17 February 2013. Retrieved 10 Jan 2013.
Sicilia-Aguilar, Aurora; Henning, Thomas; Linz, Hendrik; Krause, Oliver; André, Philippe (2012). "The star formation and disk evolution history of a sparse region: The Coronet cluster". Proceedings of the Symposium "From Atoms to Pebbles: Herschel's View of Star and Planet Formation": 29. Bibcode:2012faph.confE..29S.

External links

Media related to Coronet Cluster at Wikimedia Commons

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[apod-1] "APOD - Coronet in the Southern Crown". Retrieved 2016-12-30.

[2] 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. 687 (2): 1145–1167. arXiv:0807.2504. Bibcode:2008ApJ...687.1145S. doi:10.1086/591932. S2CID 119208696.

[3] "Coronet Cluster: A Neighbor of Star Formation (A region of star formation about 420 light years from Earth.)". Archived from the original on 17 February 2013. Retrieved 10 Jan 2013.

[Slideshow-4] Sicilia-Aguilar, Aurora; Henning, Thomas; Linz, Hendrik; Krause, Oliver; André, Philippe (2012). "The star formation and disk evolution history of a sparse region: The Coronet cluster". Proceedings of the Symposium "From Atoms to Pebbles: Herschel's View of Star and Planet Formation": 29. Bibcode:2012faph.confE..29S.