Abell 2147

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Abell 2147
ABELL 2147.png
Observation data (Epoch J2000)
Constellation(s) Virgo
Right ascension 16h 02m 17.2s [1]
Declination +15° 53′ 43″ [1]
Richness class 1 [2]
Redshift 0.03500 (10 493 km/s) [1]
Distance 149  Mpc (486  Mly) h−1
0.705 [1]
X-ray flux (53.20 ± 7.0%)×10−12 erg s−1 cm−2 (0.1–2.4 keV) [1]
See also: Galaxy group, Galaxy cluster, List of galaxy groups and clusters

Abell 2147 is a galaxy cluster in the Abell catalogue. [3] It is located within the core of the Hercules Superclusters (SCI 160), within Serpens Caput, near the cluster Abell 2152, approximately two degrees south southwest of the Hercules Cluster (Abell 2151). It is possible that Abell 2147 is actually part of the Hercules Cluster considering that it shares the same redshift of 550 million light years. [4] [5]

Contents

This galaxy cluster contains mostly faint, small and scattered galaxies. [4]

See also

Radial Profile

The extraction regions were chosen based on an exposure corrected, combined GIS-2 and GIS-3 sky image. Reference sky coordinates from the literature were used as input to a centroid routine to determine the cluster center right ascension and declination. A radial emission profile was then constructed from this position. Note that this radial profile does not reflect the true cluster profile given the complicated PSF of the ASCA mirrors and the GIS detector. The background (and sigma of the background) was iterative determined by stepping inward from the end of the profile and averaging (using a three sigma clipping algorithm). The extraction region was chosen to be the radius at which the radial profile reached 5*sigma times the background level.

The radial profile is shown below. The red line is the background level. The blue line is the 5*sigma level. SIS extaction radii were set at 0.70 times the GIS extraction radius. [6]

ABELL 2147 83074000 rad.gif

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<span class="mw-page-title-main">IC 1101</span> Galaxy in the constellation Virgo

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<span class="mw-page-title-main">Abell 1413</span> Galaxy cluster in constellation Coma Berenices

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Abell 1795 is a galaxy cluster in the Abell catalogue.

<span class="mw-page-title-main">Abell 665</span> Galaxy cluster in the constellation Ursa Major

Abell 665 is a galaxy cluster in the Abell catalogue in the constellation Ursa Major. It is also known as the only cluster in his 1989 catalog to receive Abell's highest richness class of 5. This means that it contains at least 300 galaxies in the magnitude range of m3 to m3+2, where m3 is the magnitude of the third-brightest member of the cluster. The clusters in all other richness classes contain less than 300 such galaxies. Abell 665's combination of high brightness and large distance, made it an excellent candidate along with 37 other clusters to help determine the Hubble constant using the Sunyaev–Zel'dovich effect in 2006.

Abell 2152 is a bimodal galaxy cluster and one of three clusters comprising the Hercules Supercluster. It contains 3 BCGs; the S0 lenticular UGC 10204, the pair UGC 10187, and the SA0 unbarred lenticular CGCG 108-083. In total there are 41 galaxies which are confirmed to be members of the cluster. The cluster is classified as a Bautz-Morgan type III and Rood-Sastry class F cluster, indicating morphological irregularity and perhaps dynamical youth. It is receding from the Milky Way galaxy with a velocity of 12385 km/s.

<span class="mw-page-title-main">NGC 6045</span> Galaxy in the constellation Hercules

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<span class="mw-page-title-main">NGC 709</span> Galaxy in the constellation Andromeda

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References

  1. 1 2 3 4 5 "NED results for object ABELL 2147". NASA/IPAC Extragalactic Database (NED). Retrieved March 15, 2012.
  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.
  3. ↑ ABELL 2147 Archived 2012-03-20 at the Wayback Machine , Archive of Chandra Cluster Entropy Tables, Michigan State University, retrieved 2012-03-31.
  4. 1 2 Notes on Obscure Galaxy Clusters, San Francisco Amateur Astronomers, retrieved 2012-03-31.
  5. ↑ Bautz, L. P. (June 1972). "Redshifts for galaxies in and near Abell 2147" (PDF). Astronomical Journal. 77: 331–332, 401–402. Bibcode:1972AJ.....77..331B. doi:10.1086/111287. AAA007.160.030. Retrieved April 1, 2012.
  6. ↑ "ABELL 2147 in 83074000". Archived from the original on 2016-03-06.


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