NGC 2005
| NGC 2005 | |
|---|---|
.jpg) NGC 2005 as seen by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Dorado |
| Right ascension | 05h 30m 08.5s[1] |
| Declination | −69° 45′ 14.42″[1] |
| Distance | 162 kly (49.7 kpc) |
| Apparent magnitude (V) | 11.57[1] |
| Apparent dimensions (V) | 1.6' × 1.6' |
| Physical characteristics | |
| Mass | 170,000 - 560,000[2] M☉ |
| Metallicity | [Fe/H] = –1.92[3] dex |
| Estimated age | 13.8 ± 4.9 Gyr[4] |
| Other designations | NGC 2005 |
NGC 2005 is a globular cluster located within the Large Magellanic Cloud in the constellation Dorado.
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 2 3 "NGC 2005". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 24 January 2025.
- ↑ 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.
- ↑ 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.
- ↑ 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.
- ↑ "Hubble Captures a Cosmic Fossil - NASA". Retrieved 2025-01-26.
- ↑ 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.
- ↑ 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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