Abell 209

From Wikipedia, the free encyclopedia

Constellation(s)Cetus
Right ascension01h 31m 53.0000s[1]
Declination−13° 36′ 34.000″[1]
Brightest memberABELL 0209 BCG
Abell 209
A cluster of distant, mainly elliptical galaxies. They appear as brightly shining points radiating golden light that each take the shape of a smooth, featureless oval. They crowd around one that is extremely large and bright. A few spiral galaxies of comparable size appear too, bluer in colour and with unique shapes. Of the other, more small and distant galaxies covering the scene, a few are warped into long lines.
Abell 209 imaged by the Hubble Space Telescope
Observation data (Epoch J2000)
Constellation(s)Cetus
Right ascension01h 31m 53.0000s[1]
Declination−13° 36′ 34.000″[1]
Brightest memberABELL 0209 BCG
Richness class3[2]
Bautz–Morgan classificationII-III[2]
Redshift0.209[1]
Distance919.97 ± 64.45 Mpc (3,001 ± 210 Mly)[1]
Other designations
ACO 209, 1RXS J013152.8-133651, ACT-CL J0131.8-1336[1]

Abell 209 is a galaxy cluster located in the constellation Cetus at a distance of about 3 billion light-years from Earth.[1] Included in Abell catalogue compiled by George O. Abell in 1958, it has a wealth class 3 (clusters consisting of 130-199 galaxies), and is of type II-III in the Bautz–Morgan classification.[2]

Abell 209 was one of 25 galaxy clusters studied with the Hubble Space Telescope during an observational campaign, called the Cluster Lensing and Supernova survey with Hubble (CLASH), over a three-and-a-half-year period, from 2010 to 2013.[3] Its redshift has been recalculated, now estimated at z = 0.209 (previously 0.206).[4]

Abell 209 is located in the vicinity of Abell 222, from which it is separated by a distance of about 19.2 megaparsecs (62.6 million light-years).[5]

References

Related Articles

Wikiwand AI