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NGC 152

NGC 152
NGC 152 as seen from the Hubble Space Telescope
Observation data (J2000 epoch)
Right ascension00h 32m 56.26s[1]
Declination−73° 06′ 56.6″[1]
Apparent magnitude (V)12.26[1]
Apparent dimensions (V)3.00′ × 3.00′[2]
Physical characteristics
Mass2.5×104[3] M☉
Estimated age1.40±0.20 Gyr[3]
Other designationsESO 28-24[4]
Associations
ConstellationTucana
See also: Open cluster, List of open clusters

NGC 152 is an open cluster in the constellation Tucana. It was discovered by John Herschel on September 20, 1835.[5] It is located within the Small Magellanic Cloud.[1]

NGC 152 is about 1.40 billion years old. Its estimated mass is 2.5×104 M☉, and its total luminosity is 8.0×104 L☉, leading to a mass-to-luminosity ratio of 0.31 M☉/L☉.[3] All else equal, older star clusters have a lower luminosity for the same mass; that is, their mass-to-luminosity ratios are higher.[3]

See also

References

  1. ^ a b c d Rafelski, Marc; Zaritsky, Dennis (2005). "The Star Clusters of the Small Magellanic Cloud: Age Distribution". The Astronomical Journal. 129 (6): 2701–2713. arXiv:astro-ph/0408186. Bibcode:2005AJ....129.2701R. doi:10.1086/424938. S2CID 4600017.
  2. ^ Bica, E.; Dutra, C. M. (2000). "Updating the Census of Star Clusters in the Small Magellanic Cloud". The Astronomical Journal. 119 (3): 1214–1224. arXiv:astro-ph/9912386. Bibcode:2000AJ....119.1214B. doi:10.1086/301277. hdl:10183/108234. S2CID 119350474.
  3. ^ a b c d 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. ^ "NGC 152". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-06.
  5. ^ "New General Catalog Objects: NGC 150-199". Retrieved 2016-06-11.
  • Media related to NGC 152 at Wikimedia Commons



Quelle: https://en.wikipedia.org/wiki/NGC_152