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NGC 6535 is a globular cluster of stars located at a distance of 22,200 light years from Earth in the equatorial constellation of Serpens, and is listed in the New General Catalogue. Its discovery is usually attributed to astronomer John Russell Hind in 1852,[4][5] however Wolfgang Steinicke has uncovered evidence that William Herschel's first discovery was actually NGC 6535, which he observed on 24th August 1780.[6]

NGC 6535
Observation data (J2000 epoch)
ConstellationSerpens
Right ascension18h 3m 50.51s[1]
Declination−0° 17′ 51.5″[1]
Distance22 kly (6.7 kpc)[2]
Apparent magnitude (V)9.3
Physical characteristics
Metallicity = -1.95±0.04[3] dex
Other designationsC 1801-003, GCl 83, [KPS2012] MWSC 2795[1]
See also: Globular cluster, List of globular clusters

The cluster is suspected to harbour an intermediate-mass black hole in its center[7] and, unusually for a low-mass globular cluster, has had multiple generations of stars.[3] Rather small and sparse for a globular cluster,[8] this cluster contains no known RR Lyrae variables, which is unusual for a globular cluster.[9]


References


  1. "NGC 6535". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-05-16.
  2. "SEDS". Retrieved 2017-05-15.
  3. NGC 6535: the lowest mass Milky Way globular cluster with a Na-O anti-correlation?, 2017, arXiv:1708.07705
  4. Hille, Karl (2015-02-24). "Hubble Sees an Ancient Globular Cluster". NASA. Retrieved 2021-03-10.
  5. "New General Catalog Objects: NGC 6500 - 6549". cseligman.com. Retrieved 2021-03-10.
  6. "Photos". www.klima-luft.de. Retrieved 2021-03-10.
  7. MOCCA-SURVEY Database I: Is NGC 6535 a Dark Star Cluster Harboring an IMBH, 2016, arXiv:1607.08275
  8. Testa, Vincenzo; Corsi, Carlo E.; Andreuzzi, Gloria; Iannicola, Giacinto; Marconi, Gianni; Piersimoni, Anna Marina; Buonanno, Roberto (2001). "Horizontal-Branch Morphology and Dense Environments: Hubble Space Telescope Observations of Globular Clusters NGC 2298, 5897, 6535, and 6626". The Astronomical Journal. 121 (2): 916–934. Bibcode:2001AJ....121..916T. doi:10.1086/318752.
  9. Sarajedini, Ata (1994). "CCD Photometry of the Galactic globular cluster NGC 6535 in the B and V Passbands". Publications of the Astronomical Society of the Pacific. 106: 404. Bibcode:1994PASP..106..404S. doi:10.1086/133392.



На других языках

[de] NGC 6535

NGC 6535 ist ein Kugelsternhaufen in 22.200 Lichtjahren Entfernung im Sternbild Schlange, der im New General Catalogue verzeichnet ist.
- [en] NGC 6535

[ru] NGC 6535

NGC 6535 (другое обозначение — GCL 83) — шаровое скопление в созвездии Змея.


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