astro.wikisort.org - GalaxyNGC 416 is a globular cluster located in the constellation Tucana. It was discovered on September 5, 1826 by James Dunlop. It was described by Dreyer as "faint, pretty small, round, gradually brighter middle."[3] At a distance of about 199,000 ± 9,800 ly (61,000 ± 3,000 pc), it is located within the Small Magellanic Cloud.[3] At an aperture of 31 arcseconds, its apparent V-band magnitude is 11.42, but at this wavelength, it has 0.25 magnitudes of interstellar extinction.[2]
Globular cluster located in the constellation Tucana
NGC 416 |
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Constellation | Tucana |
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Right ascension | 01h 07m 58.5s[1] |
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Declination | −72° 21′ 18″[1] |
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Distance | 199,000 ± 9,800 ly (61,000 ± 3,000 pc)[1] |
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Apparent magnitude (V) | 11.42[2] |
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Apparent dimensions (V) | 1.2′ × 1.2′[3] |
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Mass | 8.0×104[2] M☉ |
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Estimated age | 6.60±0.80 Gyr[2] |
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Other designations | ESO 029-SC 032.[1] |
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See also: Open cluster, List of open clusters |
NGC 416 is about 6.6 billion years old. Its estimated mass is 8.0×104 M☉, and its total luminosity is 1.12×105 L☉, leading to a mass-to-luminosity ratio of 0.72 M☉/L☉.[2] All else equal, older star clusters have higher mass-to-luminosity ratios; that is, they have lower luminosities for the same mass.[2]
References
- "NASA/IPAC Extragalactic Database". Results for NGC 0416. Retrieved September 2, 2016.
- 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.
- "New General Catalog Objects: NGC 400 - 449". Cseligman. Retrieved February 11, 2017.
External links
Media related to NGC 416 at Wikimedia Commons
Constellation of Tucana |
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Stars | Bayer | |
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Variable |
- W
- AQ
- BQ
- BS
- BZ
- CC
- CF
- CG
- CP
- DR
- DS
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HR |
- 160
- 176
- 186
- 199
- 281
- 380
- 8509
- 8531
- 8593
- 8620
- 8646
- 8669
- 8686
- 8689
- 8829
- 8843
- 8901
- 8908
- 8909
- 8994
- 8996
- 9060
- 9108
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HD | |
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Other | |
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Star clusters | |
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Galaxies | |
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 Category |
На других языках
[de] NGC 416
NGC 416 ist ein offener Sternhaufen in der 200.000 Lichtjahre entfernten kleinen Magellanschen Wolke im Sternbild Tukan. Das Alter des Haufens wird auf 2,5 Milliarden Jahre geschätzt.
- [en] NGC 416
[ru] NGC 416
NGC 416 (другое обозначение — ESO 29-SC32) — звёздное скопление[уточнить] в созвездии Тукан.
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