Coronet Cluster

Coronet Cluster
Coronet Cluster
	R CrA region, with the Coronet Cluster in the centre, with reflection nebulae lit by TY CrA and to upper right, and the / pair at lower right ; Credit: ESO
Observation data (J2000.0 epoch)
Constellation	Corona Australis
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
Notable features	relative scarcity of circumstellar discs
Other designations	R CRA, G359.93-17.85 by BDB2003 catalog
	See also: Open cluster, List of open clusters

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.
^ "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.

[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.

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