NGC 1971
| NGC 1971 | |
|---|---|
 NGC 1971 in the centre with NGC 1972 just above it and NGC 1969, just right of it. | |
| Observation data (J2000 epoch) | |
| Right ascension | 05h 26m 45.58s[1] |
| Declination | −67° 51′ 03.2″[1] |
| Apparent magnitude (V) | 11.9[2] |
| Apparent dimensions (V) | 0.8[3] |
| Physical characteristics | |
| Estimated age | 160 Myr[4] |
| Other designations | ESO 56-SC128, GC 1176, h 2875[3] |
| Associations | |
| Constellation | Dorado |
NGC 1971 (also known as ESO 56-SC128) is an open cluster which is in the Dorado constellation and is part of the Large Magellanic Cloud (LMC). It was discovered by English astronomer John Herschel on December 23, 1834.[5] The apparent size of this cluster is 11.9 by 0.80 arcminutes.[3][2] NGC 1971 may form part of a triple system, along with the open clusters NGC 1972 and NGC 1969. They belong to the LH 59 association in the eastern section of the LMC bar.[6]
This is a young cluster that appears to show an age spread of around 170 million years in its member stars.[7] The actual age of the cluster is 160 million years.[4]
References
[edit]- ^ a b Pietrzynski, G.; et al. (December 1999). "The Optical Gravitational Lensing Experiment. Catalog of Star Clusters from the Large Magellanic Cloud". Acta Astronomica. 49: 521–542. arXiv:astro-ph/9912187. Bibcode:1999AcA....49..521P.
- ^ a b "Open Cluster NGC 1971". DSO. Archived from the original on 7 November 2017. Retrieved 30 October 2017.
- ^ a b c "Object: NGC 1971 (*)". Students for the Exploration and Development of Space. Retrieved 30 October 2017.
- ^ a b Piatti, Andrés E. (December 2020). "Multiple populations of Hβ emission line stars in the Large Magellanic Cloud cluster NGC 1971". Astronomy & Astrophysics. 644. id. A98. arXiv:2011.00929. Bibcode:2020A&A...644A..98P. doi:10.1051/0004-6361/202038993.
- ^ Seligman, Courtney. "NGC 1971 (in the Large Magellanic Cloud)". cseligman. Retrieved 30 October 2017.
- ^ Dieball, A.; Grebel, E. K. (June 2000). "Studies of binary star cluster candidates in the bar of the LMC. II". Astronomy and Astrophysics. 358: 897–909. arXiv:astro-ph/0004208. Bibcode:2000A&A...358..897D.
- ^ Piatti, Andrés E.; Cole, Andrew (May 2017). "Observational hints of a real age spread in the young LMC star cluster NGC 1971". Monthly Notices of the Royal Astronomical Society: Letters. 470 (1): L77–L81. arXiv:1705.08186. Bibcode:2017MNRAS.470L..77P. doi:10.1093/mnrasl/slx081.
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