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NGC 411
Hubble Space Telescope image of the open cluster NGC 411 Credit: NASA/ESA
Observation data (J2000 epoch)
Right ascension	01 07 55.95
Declination	−71° 46′ 04.5″
Distance	179,000 ± 13,000 ly (55,000 ± 4,000 pc)
Apparent magnitude (V)	12.1
Apparent dimensions (V)	2.1′ × 1.9′
Physical characteristics
Mass	3.0×10 M☉
Estimated age	1.5 billion years
Other designations	Kron 60, Lindsay 82, ESO 51-19
Associations
Constellation	Tucana
See also: Open cluster, List of open clusters

NGC 411 is a globular cluster located approximately 55,000 pc (180,000 ly) from Earth in the constellation Tucana. It was discovered in 1826 by James Dunlop. It was described by Dreyer as "extremely faint, pretty large, round, gradually very little brighter middle". At a distance of about 180,000 light years (55,000 parsecs), it is located within the Small Magellanic Cloud. It has a mass of about 3.0×10 M_☉, and a luminosity of about 8.0×10 L_☉.

NGC 411 was imaged by the Hubble Space Telescope in 2013, showing an abundance of stars ranging from blue to red. In particular, this seemed to suggest that the cluster was much younger than previously thought: its age has been estimated at 1.5 billion years old, relatively young in astronomical terms. However, these results have been challenged by another group who state that these young stars may actually just be background stars, and are thus physically unrelated.

See also

• List of NGC objects (1–1000)

References

1. ^ "NGC 411". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 6 February 2017.
2. ^ "NASA/IPAC Extragalactic Database". Results for NGC 0411. Retrieved 2 September 2016.
3. ^ Song, Ying-Yi; Mateo, Mario; Bailey, John I.; Walker, Matthew G.; Roederer, Ian U.; Olszewski, Edward W.; Reiter, Megan; Kremin, Anthony (2021). "Dynamical masses and mass-to-light ratios of resolved massive star clusters – II. Results for 26 star clusters in the Magellanic Clouds". Monthly Notices of the Royal Astronomical Society. 504 (3): 4160–4191. arXiv:2104.06882. doi:10.1093/mnras/stab1065.
4. ^ Li, C.; de Grijs, R.; Bastian, N.; Deng, L.; Niederhofer, F.; Zhang, C. (2016). "The tight subgiant branch of the intermediate-age star cluster NGC 411 implies a single-aged stellar population". Monthly Notices of the Royal Astronomical Society. 461 (3): 3212–3221. arXiv:1606.05394. Bibcode:2016MNRAS.461.3212L. doi:10.1093/mnras/stw1491.
5. "New General Catalog Objects: NGC 400 - 449". Cseligman. Retrieved 6 February 2017.
6. ^ "Hubble Finds Appearances can be Deceptive". www.nasa.gov. 2013.
7. Cabrera-Ziri, I.; et al. (2016). "No evidence for younger stellar generations within the intermediate-age massive clusters NGC 1783, NGC 1806 and NGC 411". Monthly Notices of the Royal Astronomical Society. 459 (4): 4218–4223. arXiv:1604.06106. Bibcode:2016MNRAS.459.4218C. doi:10.1093/mnras/stw966.

External links

• Media related to NGC 411 at Wikimedia Commons

v t e Constellation of Tucana
List of stars in Tucana Tucana in Chinese astronomy
Stars	Bayer α β β β γ δ ε ζ η θ ι κ λ λ μ ν π ρ Variable DS HR 8829 HD 4308 5980 7199 (Emiw) 215497 221287 (Poerava) Other AB7 Gliese 54 HV 2112 HV 11417 HV 11423 L 168-9 PMMR 62 SMC 018136
Exoplanets DS Tucanae Ab HD 4308 b HD 7199 b (Hairu) HD 215497 b c HD 219077 b HD 221287 b (Pipitea)
Star clusters	NGC 121 152 176 220 222 231 241 256 265 267 269 290 294 299 306 330 339 346 361 362 371 376 395 411 416 419 422 456 458 460 465 Other ξ (47)
Nebulae E0102
Galaxies	NGC 53 360 406 432 434 440 466 484 7329 Other ESO 148-2 ISOHDFS 27 Tucana Dwarf Small Magellanic Cloud (partly in Hydrus)
Category

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• Astronomical objects discovered in 1826
• Tucana
• Open clusters
• Small Magellanic Cloud
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