Abell 1991
| Abell 1991 | |
|---|---|
 Abell 1991 seen by DESI Legacy Surveys | |
| Observation data (Epoch J2000) | |
| Constellation | 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 | 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] |
Abell 1991 is a galaxy cluster in the Abell catalogue. The central dominant galaxy (cD) of Abell 1991 is a large, moderately bright and slightly elongated elliptical.[4]
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". Astrophysical Journal Supplement Series. 70 (May 1989): 1–138. Bibcode:1989ApJS...70....1A. doi:10.1086/191333. ISSN 0067-0049.
- 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". The Astrophysical Journal. 640 (2). Chicago, Illinois, USA: 691–709. arXiv:astro-ph/0507092. Bibcode:2006ApJ...640..691V. doi:10.1086/500288. S2CID 18940822.
- ↑ Fasano, G.; Bettoni, D.; Ascaso, B.; Tormen, G.; Poggianti, B. M.; Valentinuzzi, T.; D'Onofrio, M.; Fritz, J.; Moretti, A.; Omizzolo, A.; Cava, A.; Moles, M.; Dressler, A.; Couch, W. J.; Kjaergaard, P.; Varela, J. (2010). "The shapes of BCGs and normal ellipticals in nearby clusters". Monthly Notices of the Royal Astronomical Society. 404 (3): 1490–1504. Bibcode:2010MNRAS.404.1490F. doi:10.1111/j.1365-2966.2010.16361.x.
