Abell 1991
| Abell 1991 | |
|---|---|
| Observation data (Epoch J2000) | |
| Constellation(s) | Boötes |
| Right ascension | 14h 54m 30.2s[1] |
| Declination | +18° 37′ 51″[1] |
| Richness class | 1 [2] |
| Bautz-Morgan classification | I [2] |
| Redshift | 0.05870 (17 598)[1] |
| Distance (co-moving) |
249 Mpc (812 Mly) h−1 0.705 [1] |
| ICM temperature | 2.61 keV[3] |
| Binding mass | 1.23×1014[3] M☉ |
| X-ray flux | (9.40 ± 16.7%)×10−12 erg s−1 cm−2 (0.1—2.4 keV)[1] |
| See also: Galaxy groups, Galaxy clusters, List of galaxy clusters | |
Abell 1991 is a galaxy cluster in the Abell catalogue.
See also
References
- 1 2 3 4 5 "NED results for object ABELL 1991". NASA/IPAC Extragalactic Database (NED). Retrieved March 17, 2012.
- 1 2 Abell, George O.; Corwin, Harold G., Jr.; Olowin, Ronald P. (May 1989). "A catalog of rich clusters of galaxies" (PDF). Astrophysical Journal Supplement Series. 70 (May 1989): 1–138. Bibcode:1989ApJS...70....1A. doi:10.1086/191333. ISSN 0067-0049. Retrieved March 12, 2012.
- 1 2 Table 4 from Vikhlinin, A.; Kravtsov, A.; Forman, W.; Jones, C.; Markevitch, M.; Murray, S. S.; Van Speybroeck, L. (April 2006). "Chandra Sample of Nearby Relaxed Galaxy Clusters: Mass, Gas Fraction, and Mass-Temperature Relation" (PDF). The Astrophysical Journal. Chicago, Illinois, USA: University of Chicago Press. 640 (2): 691–709. arXiv:astro-ph/0507092
. Bibcode:2006ApJ...640..691V. doi:10.1086/500288. Retrieved March 12, 2012.
Coordinates: 
14h 54m 30.2s, +18° 37′ 51″
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