NGC 7006
| NGC 7006 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Class | I[1] |
| Constellation | Delphinus |
| Right ascension | 21h 1m 29.4s[2] |
| Declination | +16° 11′ 14.4″[2] |
| Distance | 137 kly (42 kpc)[3] |
| Apparent magnitude (V) | 10.6[4] |
| Apparent dimensions (V) | 2.8′[4] |
| Physical characteristics | |
| Mass | 3.03×105[5] M☉ |
| Metallicity | = –1.52[5] dex |
| Other designations | Caldwell 42 |
![{\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/4c0821bd80891e071c08e7c7ee8e022baedf522c)
NGC 7006 (also known as Caldwell 42) is a globular cluster[2] in the constellation Delphinus. NGC 7006 resides in the outskirts of the Milky Way. It is about 135,000[6] light-years away, five times the distance between the Sun and the centre of the galaxy, and it is part of the galactic halo. This roughly spherical region of the Milky Way is made up of dark matter, gas and sparsely distributed stellar clusters.
Gallery
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NGC 7006 imaged by Hubble's Advanced Camera for Surveys.
References
- ^ Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin (849): 11–14, Bibcode:1927BHarO.849...11S
- ^ a b c "SIMBAD Astronomical Database". Results for NGC 7006. Retrieved 2007-04-21.
- ^ Hessels, J. W. T.; et al. (November 2007), "A 1.4 GHz Arecibo Survey for Pulsars in Globular Clusters", The Astrophysical Journal, 670 (1): 363–378, arXiv:0707.1602, Bibcode:2007ApJ...670..363H, doi:10.1086/521780.
- ^ a b "SEDS NGC Catalog Online". Results for NGC 7006. Retrieved 2010-11-27.
- ^ a b Boyles, J.; et al. (November 2011), "Young Radio Pulsars in Galactic Globular Clusters", The Astrophysical Journal, 742 (1): 51, arXiv:1108.4402, Bibcode:2011ApJ...742...51B, doi:10.1088/0004-637X/742/1/51.
- ^ "A Remote Outpost of the Milky Way". ESA/Hubble Picture of the Week. 12 September 2011. Retrieved 13 September 2011.
External links
- NGC 7006 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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