El Supercluster Pavo-Indus

Nota del autor: He perdido la traducción española de esta página.

The Pavo-Indus Supercluster is not regarded as a major supercluster. It is not a particularly dense concentration of galaxies and it doesn't contain any very rich clusters of galaxies. This map below shows the brightest galaxies (from the Principal Galaxies Catalogue) in this region of the sky. The Pavo-Indus Supercluster is faintly visible as a curving wall of galaxies that connects to the rich A3627 cluster and ultimately to the Centaurus supercluster.

The Pavo-Indus Supercluster

Below is a list of clusters of galaxies in the vicinity of the Pavo-Indus Supercluster. The three Abell clusters within this supercluster are A3656, A3698 and A3742. They are not impressive clusters of galaxies. The most important cluster in this region of the sky is the major A3627 cluster which dominates this part of the universe (see the page on the Centaurus supercluster for more information).

   1               2       3        4         5      6       7                
 Numero           Coordenadas    Desplaz  Distancia Riqueza Notas             
 Abell            Ecuatoriales   al rojo  (millones                           
                  RA       Dec      z     años-luz)                           
 A3627          16 15.5  -60 54   .0145      200      1    Norma cluster      
 A3656          20 00.5  -38 32   .0178      245      0                       
 A3698          20 36.0  -25 17   .0188      260      1                       
 A3742          21 06.7  -47 09   .0152      210      0                       
 A3747          21 08.7  -43 30   .0298      410      0    cluster ubicado detras

Below are some other prominant groups of galaxies in this region. Notice that there are two separate groups of galaxies which are commonly called the 'Pavo cluster'. The IC4765 group is the larger of the two Pavo clusters and it may possibly be a richer group than the three Abell clusters within the supercluster.

   1               2       3        4         5       6       7              
 Nombre del       Coordenadas    Desplaz  Distancia Riqueza Notas            
 Grupo            Ecuatoriales   al rojo  (millones                         
                  RA       Dec      z     años-luz)                         
IC4765          18 47.7  -63 19   .0149      205           Pavo cluster       
NGC6753/IC4837A 19 09.7  -55 07   .0103      145                              
NGC6769/IC4845  19 17.8  -60 31   .0134      185                              
ESO185-54       20 03.4  -55 56   .0144      200                              
NGC6868         20 09.8  -48 15   .0095      130           Telescopium cluster
NGC6876         20 18.5  -70 53   .0127      175           Pavo cluster       
NGC7172/IC5156  22 02.2  -32 24   .0089      125                              
IC5250/NGC7329  22 47.5  -65 06   .0108      150                              
Columna 1: El numero o nombre del cluster o grupo.
Columna 2: La Ascension Derecha del año 2000.
Columna 3: La Declinacion del año 2000.
Columna 4: Desplazamiento al rojo del cluster.
Columna 5: La distancia en millones de años luz asumiendo H=70km/s/Mpc.
Columna 6: La clase de "riqueza" del cluster (para clusters Abell solamente).
Columna 7: Nombres adicionales y notas.

Abell G, Corwin H, Olowin R, (1989), A catalogue of Rich Clusters of Galaxies, 
          Astrophys J Supp, 70, 1.
Struble M, Rood H, (1999), A compilation of redshifts and velocity dispersions for 
          ACO clusters, Astrophys J, 125, 35.
Fouqué P, Gourgoulhon E, Chamaraux P, Paturel G, (1992), Groups of Galaxies within 
          80 Mpc, Astron Astrophys Supp, 93, 211.
Garcia A, (1993), General study of group membership. II. Determination of nearby groups.
          Astron Astrophys Supp, 100, 47.
Giuricin G, Marinoni C, Ceriani L, Pisani A, (2000), Nearby optical galaxies: selection
          of the sample and identification of groups. Astrophys J, 543, 178.

El Estudio Cientifico del Supercluster Pavo-Indus

Very little information has been written about the Pavo-Indus supercluster. It is not considered to be an important supercluster. Most of the early research showed that the supercluster was part of a nearby wall of galaxies which connects to the major A3627 galaxy cluster and the Centaurus supercluster. A Fairall submitted evidence in support of this view in a paper in 1988.

More recently H di Nella, W Couch, G Paturel and Q Parker surveyed this region of the sky in 1996 to see if the Pavo-Indus supercluster was connected to the Perseus-Pisces supercluster. In their paper, published at the same time, they concluded that it was not.

A3742 - from the Digitized Sky Survey

Above - the cluster A3742 which lies in the middle of the Pavo-Indus supercluster. This is a typical example of an Abell cluster with a richness class of 0. About twenty galaxies can be seen in this picture (visible as fuzzy oval patches) but most of them are very hard to distinguish from the foreground stars. The two brightest galaxies here are ESO 286-49 (centre) and NGC 7014 (left).

The nearest superclusters Volver a los Superclusters Vecinos