SDSS J0900+2234 FG
SDSS J0900+2234 FG (Hubble Space Telescope) | |
| Object type | Galaxy cluster |
|---|---|
| Other designations | [RRB2014] RM J090002.6+223410.5, GMBCG 135.01103+22.56803 |
Observation data (Epoch J2000) | |
| Constellation | Cancer |
| 09h 00m 02.6s | |
| Declination | +22° 34′ 04″ |
| Redshift | 0.4843 |
SDSS J0900+2234 FG is a galaxy cluster located in the direction of the constellation Cancer, at a distance of more than 4.7 billion light-years from Earth, corresponding to a comoving distance of 5.804 billion light-years.[1]
The cluster is composed of 28 galaxies. The brightest member is SDSS J090002.64+223404.8, also known as LRG-4-606, where LRG stands for Luminous Red Galaxy, a class of galaxies cataloged by the Sloan Digital Sky Survey.[2] These are typically massive elliptical galaxies composed predominantly of old stellar populations.
Around LRG-4-606, a gravitational lensing phenomenon is observed in the form of an incomplete ring, representing a distant background galaxy, SDSS J0900+2234 BG.[3] The background galaxy has a redshift of z = 2.03,[4] and is located at a light-travel distance of 10.088 billion light-years (comoving distance: 16.777 billion light-years). Its image is magnified and distorted by the gravitational field of the foreground cluster.
Images of this phenomenon were captured by the Hubble Space Telescope in 2011.[5]
See also
References
- ^ Hao, Jiangang; McKay, Timothy A.; Koester, Benjamin P. (2010-12-01). "A GMBCG Galaxy Cluster Catalog of 55,424 Rich Clusters from SDSS DR7". The Astrophysical Journal Supplement Series. 191 (2): 254–274. arXiv:1010.5503. Bibcode:2010ApJS..191..254H. doi:10.1088/0067-0049/191/2/254.
- ^ Stark, Daniel P.; Auger, Matthew; Belokurov, Vasily (2013-12-01). "The CASSOWARY spectroscopy survey: A new sample of gravitationally lensed galaxies in SDSS". Monthly Notices of the Royal Astronomical Society. 436 (2): 1040–1056. arXiv:1302.2663. doi:10.1093/mnras/stt1624.
- ^ Diehl, H. Thomas; Allam, Sahar S.; Annis, James (2009-12-10). "The Sloan Bright Arcs Survey: Four Strongly Lensed Galaxies with Redshift >2". The Astrophysical Journal. 707 (1): 686–692. arXiv:0910.4600. Bibcode:2009ApJ...707..686D. doi:10.1088/0004-637X/707/1/686.
- ^ Bian, Fuyan; Fan, Xiaohui; Bechtold, Jill (2010-12-20). "LBT/LUCIFER Observations of the z~2 Lensed Galaxy J0900+2234". The Astrophysical Journal. 725 (2): 1877–1885. arXiv:1004.4318. Bibcode:2010ApJ...725.1877B. doi:10.1088/0004-637X/725/2/1877.
- ^ "An arc sculpted by gravity". ESA/Hubble. Retrieved 2016-06-06.
External links