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NGC 2005

From Wikipedia, the free encyclopedia
Globular cluster in the Large Magellanic Cloud
NGC 2005
NGC 2005 as seen by theHubble Space Telescope
Observation data (J2000epoch)
ConstellationDorado
Right ascension05h 30m 08.5s[1]
Declination−69° 45′ 14.42″[1]
Distance162kly (49.7kpc)
Apparent magnitude (V)11.57[1]
Apparent dimensions (V)1.6' × 1.6'
Physical characteristics
Mass170,000 - 560,000[2] M☉
Metallicity[Fe/H] = –1.92[3]dex
Estimated age13.8 ± 4.9Gyr[4]
Other designationsNGC 2005
See also:Globular cluster,List of globular clusters

NGC 2005 is aglobular cluster located within theLarge Magellanic Cloud in the constellationDorado.

Compared to other globular clusters of the Large Magellanic Cloud, NGC 2005 has a notably different chemical composition, suggesting it belonged to another galaxy which merged with the LMC at some point in the past.[5][6] However, this hypothesis has been disputed.[7]

References

[edit]
  1. ^abc"NGC 2005".SIMBAD.Centre de données astronomiques de Strasbourg. Retrieved24 January 2025.
  2. ^Mackey*, A. D.; Gilmore, G. F. (2003-01-01)."Surface brightness profiles and structural parameters for 53 rich stellar clusters in the Large Magellanic Cloud".Monthly Notices of the Royal Astronomical Society.338 (1):85–119.arXiv:astro-ph/0209031.Bibcode:2003MNRAS.338...85M.doi:10.1046/j.1365-8711.2003.06021.x.ISSN 0035-8711.
  3. ^Suntzeff, Nicholas B.; Schommer, Robert A.; Olszewski, Edward W.; Walker, Alistair R. (1992-11-01)."Spectroscopy of giants in LMC clusters. III - Velocities and abundances for NGC 1841 and Reticulum and the properties of the metal-poor clusters".The Astronomical Journal.104: 1743.Bibcode:1992AJ....104.1743S.doi:10.1086/116356.
  4. ^Wagner-Kaiser, R; Mackey, Dougal; Sarajedini, Ata; Cohen, Roger E; Geisler, Doug; Yang, Soung-Chul; Grocholski, Aaron J; Cummings, Jeffrey D (2018-03-11)."Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud – III. Horizontal branch morphology".Monthly Notices of the Royal Astronomical Society.474 (4):4358–4365.arXiv:1801.00006.doi:10.1093/mnras/stx3061.ISSN 0035-8711.
  5. ^"Hubble Captures a Cosmic Fossil - NASA". Retrieved2025-01-26.
  6. ^Mucciarelli, A.; Massari, D.; Minelli, A.; Romano, D.; Bellazzini, M.; Ferraro, F. R.; Matteucci, F.; Origlia, L. (2021-10-18)."A relic from a past merger event in the Large Magellanic Cloud".Nature Astronomy.5 (12):1247–1254.arXiv:2110.10561.Bibcode:2021NatAs...5.1247M.doi:10.1038/s41550-021-01493-y.ISSN 2397-3366.
  7. ^Piatti, Andrés E.; Hirai, Yutaka (2023-04-25)."The Origin of the Large Magellanic Cloud Globular Cluster NGC 2005".The Astronomical Journal.165 (5): 213.arXiv:2303.09259.Bibcode:2023AJ....165..213P.doi:10.3847/1538-3881/acc6d1.ISSN 1538-3881.


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