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 ascension05h 26m 45.58s
Declination−67° 51′ 03.2″
Apparent magnitude (V)11.9
Apparent dimensions (V)0.8
Physical characteristics
Estimated age160 Myr
Other designationsESO 56-SC128, GC 1176, h 2875
Associations
ConstellationDorado
See also: Open cluster, List of open clusters

NGC 1971 (also known as ESO 56-SC128) is an open cluster which is in the constellation Dorado and is part of the Large Magellanic Cloud (LMC). It was discovered by English astronomer John Herschel on December 23, 1834. The apparent size of this cluster is 11.9 by 0.80 arcminutes. 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.

This is a young cluster that appears to show an age spread of around 170 million years in its member stars. The actual age of the cluster is 160 million years.

References

  1. 1 2 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.
  2. 1 2 "Open Cluster NGC 1971". DSO. Archived from the original on 7 November 2017. Retrieved 30 October 2017.
  3. 1 2 3 "Object: NGC 1971 (*)". Students for the Exploration and Development of Space. Retrieved 30 October 2017.
  4. 1 2 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.
  5. ↑ Seligman, Courtney. "NGC 1971 (in the Large Magellanic Cloud)". cseligman. Retrieved 30 October 2017.
  6. ↑ 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.
  7. ↑ 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.