Abell 262
| Abell 262 | |
|---|---|
 |
|
| Image of the central area with a 32-inch telescope | |
|
Observation dates equinox : J2000.0 , epoch : J2000.0 |
|
| Constellation | Andromeda |
| Right ascension | 01 h 52.8 m |
| declination | + 36 ° 09 ′ 0 ″ |
| Appearance | |
| Number of galaxies | > 100 |
| Brightest member | NGC 708 |
| Physical data | |
| Affiliation | Pisces-Perseus supercluster |
| Redshift | approx. 0.016 |
| Radial velocity | approx. 5000 km / s |
| distance | about 200 million light years |
Abell 262 is a galaxy cluster in the constellation Andromeda , on the border with Triangulum. The name is derived from its entry in the Abell catalog . Abell 262 includes over 100 galaxies and belongs to the Pisces-Perseus supercluster . The cluster, some 200 million light years away, is relatively loose and contains a relatively large number of spiral galaxies.
In the center of Abell 262 is the elliptical CD galaxy NGC 708 ; in addition, the galaxies NGC 703 and NGC 705 and the galaxy pair NGC 704 can be found in its center . The large and bright elliptical galaxy NGC 759 is one of the members further out .
Members
The following table lists some of the members of the heap. Members include other galaxies listed in the New General Catalog , including NGC 700 , NGC 709 and NGC 710 .
| Surname | α | δ | Type | m V | Angular expansion | Position angle | Distance ( million years ) |
Catalog names |
|---|---|---|---|---|---|---|---|---|
| NGC 700 | 01 h 52 m 16.8 s | + 36 ° 02 ′ 12 ″ | S0? | 14.6 | 0 ′, 8 × 0 ′, 7 | 210 | PGC 6928, CGCG 522-003 | |
| NGC 703 | 01 h 52 m 39.6 s | + 36 ° 10 ′ 17 ″ | S0- | 13.3 | 0 ′, 9 × 0 ′, 7 | 50 ° | 255 | UGC 1346, PGC 6957, MCG + 6-05-29, CGCG 522-037, H III 562 |
| NGC 704 | 01 h 52 m 37.8 s | + 36 ° 07 ′ 32 ″ | DBL SYS | 13.0 14.6 |
0 ′, 6 × 0 ′, 4 0 ′, 4 × 0 ′, 4 |
90 ° | 217 | UGC 1343, PGC 6953, MCG + 6-5-28, CGCG 522-34, V Zw 134, H III 563 |
| NGC 705 | 01 h 52 m 41.5 s | + 36 ° 08 ′ 38 ″ | S0 / a | 13.7 | 1 ′, 2 × 0 ′, 3 | 114 ° | 208 | UGC 1345, PGC 6958, MCG + 06-05-30, CGCG 522-36, VI Zw 90, H III 564 |
| NGC 708 | 01 h 52 m 46.5 s | + 36 ° 09 ′ 07 ″ | cD; E / Sy2 | 11.9 | 3 ′, 0 × 2 ′, 5 | 35 ° | 223 | UGC 1348, PGC 6962, MCG + 06-05-31, CGCG 522-039, H III 565 |
| NGC 709 | 01 h 52 m 50.6 s | + 36 ° 13 ′ 24 ″ | S0 | 14.2 | 1 ′, 0 × 0 ′, 5 | 135 ° | 166 | PGC 6969, CGCG 522-040 |
| NGC 710 | 01 h 52 m 53.0 s | + 36 ° 03 ′ 10 ″ | Scd | 13.5 | 1 ′, 3 × 1 ′, 2 | 45 ° | 280 | UGC 1349, PGC 6972, MCG + 6-5-33, CGCG 522-041, IRAS 01499 + 3548 |
| NGC 759 | 01 h 57 m 50.3 s | + 36 ° 20 ′ 35 ″ | E. | 12.8 | 1 ′, 4 × 1 ′, 4 | 215 | UGC 1440, PGC 7397, MCG + 6-5-67, CGCG 522-087, IRAS 01548 + 3605 |
The four galaxies in the central area of the cluster were all discovered by William Herschel in September 1786 , NGC 704 on September 12th, NGC 703, NGC 705 and NGC 708 on September 21st. NGC 700 was discovered on October 28, 1850 by Bindon Blood Stoney , an assistant to William Parsons , and NGC 709 was discovered by Johan Dreyer on November 18, 1877 . The galaxies NGC 710 and NGC 759 were both discovered by Heinrich Louis d'Arrest , the first on August 12, 1863, the second in 1865.
literature
- Bertram et al .: "Molecular gas in the galaxy cluster Abell 262. CO observations of UGC 1347 and other galaxies of the cluster"; in: Astronomy and Astrophysics 448 (1), pp. 29–42 (2006)
Web links
- http://www.spotastro.com/Abell_262.html
- http://astronomy-mall.com/Adventures.In.Deep.Space/agc262ch.htm
- Spektrum.de : Amateur recordings [1] [2] [3]