NGC 2516

NGC 2516
NGC 2516
	NGC 2516
Observation data (J2000.0 epoch)
Right ascension	07h 58m 20s
Declination	−60° 52′
Distance	1.3 kly
Apparent magnitude (V)	3.8
Apparent dimensions (V)	30.0′
Physical characteristics
Mass	105 to 106[citation needed] M☉
Other designations	NGC 2516, Caldwell 96, Cr 172
Associations
Constellation	Carina
	See also: Open cluster, List of open clusters

NGC 2516 (also known as Caldwell 96) is an open star cluster in the southern sky in the constellation Carina discovered by Abbe Lacaille in 1751-1752.^[1] It is also called Southern Beehive^[2]^[3] or the Sprinter.^[4]^[5]

Description

This bright cluster itself is easily visible with the naked eye as a hazy patch, but is resolvable into stars using binoculars. It contains two 5th magnitude red giant stars and three main visual double stars: HJ 4027, HJ 4031 and I 29. A small telescope would be required to split the double stars, which are all pairs of 8-9 magnitude and 1-10 arcseconds separation.^[6]

NGC 2516 and the recently discovered nearby star cluster Mamajek 2 in Ophiuchus have similar age and metallicity. Recently, kinematic evidence was presented by E. Jilinski and coauthors that suggests that these two stellar groups may have formed in the same star-forming complex some 135 million years ago.^[7]

The cluster is surrounded by the 500-parsec diameter halo consisting of stars ejected from cluster.^[8]

References

^ Jones, K. G. (March 1969). "The search for the nebulae - VI". Journal of the British Astronomical Association. 79: 213–222. Bibcode:1969JBAA...79..213J.
^ Weule, Genelle (2010). "Beginner's Guide to the Night Sky : Summer Sky Tour". abc.com. Archived from the original on 18 March 2018. Retrieved 15 April 2016.
^ Ventrudo, Brian (2009). "ESA's 'The "Southern Beehive" Cluster". americaspace.com. Archived from the original on 18 March 2018. Retrieved 15 April 2016.
^ Papadopoulos, Leonidas (2014). "ESA's 'Mission: Impossible' Sees First Light: Gaia Opens Her Eyes to the Galaxy « AmericaSpace". americaspace.com. Retrieved 13 June 2014.
^ Imaging the Southern Sky : An Amateur Astronomer's Guide Chadwick, S., Cooper, I., pg.viii, Pub. Springer (2012)
^ Robert Burnham Jr. (1978). "Burnham's Celestial Handbook": 458. {{cite journal}}: Cite journal requires |journal= (help)
^ Jilinski, E.; Ortega, V.G.; de la Reza, R.; Drake, N.A.; et al. (2009). "Dynamical Evolution and Spectral Characteristics of the Stellar Group Mamajek 2". Astrophysical Journal. 691 (1): 212. arXiv:0810.1198. Bibcode:2009ApJ...691..212J. doi:10.1088/0004-637X/691/1/212. S2CID 15570695.
^ Bouma, L. G.; Curtis, J. L.; Hartman, J. D.; Winn, J. N.; Bakos, G. Á. (2021), "Rotation and Lithium Confirmation of a 500 pc Halo for the Open Cluster NGC 2516", The Astronomical Journal, 162 (5): 197, arXiv:2107.08050, Bibcode:2021AJ....162..197B, doi:10.3847/1538-3881/ac18cd, S2CID 236088158

Bibliography

Burnham, Robert. Burnham's Celestial Handbook. Dover, 1978. ISBN 0-486-23567-X.

External links

NGC 2516 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
SEDS – NGC 2516

[Jones_1969-1] Jones, K. G. (March 1969). "The search for the nebulae - VI". Journal of the British Astronomical Association. 79: 213–222. Bibcode:1969JBAA...79..213J.

[2] Weule, Genelle (2010). "Beginner's Guide to the Night Sky : Summer Sky Tour". abc.com. Archived from the original on 18 March 2018. Retrieved 15 April 2016.

[3] Ventrudo, Brian (2009). "ESA's 'The "Southern Beehive" Cluster". americaspace.com. Archived from the original on 18 March 2018. Retrieved 15 April 2016.

[4] Papadopoulos, Leonidas (2014). "ESA's 'Mission: Impossible' Sees First Light: Gaia Opens Her Eyes to the Galaxy « AmericaSpace". americaspace.com. Retrieved 13 June 2014.

[5] Imaging the Southern Sky : An Amateur Astronomer's Guide Chadwick, S., Cooper, I., pg.viii, Pub. Springer (2012)

[6] Robert Burnham Jr. (1978). "Burnham's Celestial Handbook": 458. {{cite journal}}: Cite journal requires |journal= (help)

[7] Jilinski, E.; Ortega, V.G.; de la Reza, R.; Drake, N.A.; et al. (2009). "Dynamical Evolution and Spectral Characteristics of the Stellar Group Mamajek 2". Astrophysical Journal. 691 (1): 212. arXiv:0810.1198. Bibcode:2009ApJ...691..212J. doi:10.1088/0004-637X/691/1/212. S2CID 15570695.

[8] Bouma, L. G.; Curtis, J. L.; Hartman, J. D.; Winn, J. N.; Bakos, G. Á. (2021), "Rotation and Lithium Confirmation of a 500 pc Halo for the Open Cluster NGC 2516", The Astronomical Journal, 162 (5): 197, arXiv:2107.08050, Bibcode:2021AJ....162..197B, doi:10.3847/1538-3881/ac18cd, S2CID 236088158

[1]

v t e Astronomical catalogs
NGC	NGC 2511 NGC 2512 NGC 2513 NGC 2514 NGC 2515 NGC 2516 NGC 2517 NGC 2518 NGC 2519 NGC 2520 NGC 2521
Caldwell	C87 C88 C89 C90 C91 C92 C93 C94 C95 C96 C97 C98 C99 C100 C101 C102 C103 C104 C105
Collinder	Collinder 168 Collinder 169 Collinder 170 Collinder 171 Collinder 172 Collinder 173 Collinder 174 Collinder 175 Collinder 176

v t e Caldwell catalogue
List	C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C45 C46 C47 C48 C49 C50 C51 C52 C53 C54 C55 C56 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C73 C74 C75 C76 C77 C78 C79 C80 C81 C82 C83 C84 C85 C86 C87 C88 C89 C90 C91 C92 C93 C94 C95 C96 C97 C98 C99 C100 C101 C102 C103 C104 C105 C106 C107 C108 C109
See also	Messier Catalogue Catalogue of Nebulae and Clusters of Stars New General Catalogue Index Catalogue Revised New General Catalogue Herschel 400 Catalogue
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