Astronomy:NGC 2627

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NGC 2627
Observation data (J2000.0 epoch)
ConstellationPyxis
Right ascension 08h 37m 14.2s[1]
Declination−29° 57′ 07″[1]
Distance5,990 ly (1,837 pc)[2]
Apparent magnitude (V)8.4[3]
Apparent dimensions (V)11.0′[3]
Physical characteristics
Other designationsNGC 2627, Cr 188, Mel 87[4]
See also: Open cluster, List of open clusters

NGC 2627 is an open cluster of stars in the constellation Pyxis. It was discovered on March 3, 1793 by German-British astronomer William Herschel. Dutch astronomer J. L. E. Dreyer described it as "a cluster, considerably large, pretty rich, pretty compressed, stars from 11th to 13th magnitude".[5] The cluster has an integrated visual magnitude of 8.4 and it spans an angular size of 11.0′.[3] Around 15 stars are visible when viewed through binoculars.[3] NGC 2627 is located at a distance of approximately 5,990 ly (1,837 pc) from the Sun,[2] just above the galactic midplane.[6]

This cluster has a Trumpler class of III 2m,[3] which means it is generally average in appearance with no noticeable concentration of stars. It is of intermediate age, being around 1.4 billion years old. Correspondingly, the metallicity of the cluster is slightly sub-solar.[6] The cluster population shows four different peaks of star formation, separated by relatively quiescent periods lasting two to three hundred million years.[7]

References

  1. ↑ 1.0 1.1 Tarricq, Y. et al. (March 2021). "3D kinematics and age distribution of the open cluster population". Astronomy & Astrophysics 647: id. A19. doi:10.1051/0004-6361/202039388. Bibcode: 2021A&A...647A..19T. 
  2. ↑ 2.0 2.1 Poggio, E. et al. (2021). "Galactic spiral structure revealed by Gaia EDR3". Astronomy and Astrophysics 651: A104. doi:10.1051/0004-6361/202140687. Bibcode: 2021A&A...651A.104P. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 Inglis, Mike (2013). Observer's Guide to Star Clusters. New York, New York: Springer Science & Business Media. pp. 202–03. ISBN 9781461475675. Bibcode: 2013ogsc.book.....I. https://books.google.com/books?id=ewHABAAAQBAJ&pg=PA202. 
  4. ↑ "NGC 2627". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+2627. 
  5. ↑ Seligman, Courtney. "NGC Objects: NGC 2600 - 2649". Celestail Atlas. https://cseligman.com/text/atlas/ngc26.htm. 
  6. ↑ 6.0 6.1 Siegel, Michael H. et al. (July 2019). "The Swift UVOT Stars Survey. III. Photometry and Color-Magnitude Diagrams of 103 Galactic Open Clusters". The Astronomical Journal 158 (1): id. 35. doi:10.3847/1538-3881/ab21e1. Bibcode: 2019AJ....158...35S. 
  7. ↑ Piatti, Andrés E. et al. (December 2003). "Intermediate-age Galactic open clusters: fundamental parameters of NGC 2627". Monthly Notices of the Royal Astronomical Society 346 (2): 390–402. doi:10.1046/j.1365-2966.2003.07061.x. Bibcode: 2003MNRAS.346..390P. 

Template:NGC objects:2500-2999




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