RGZ J172749.5+534647

RGZ J172749.5+534647
SDSS image of RGZ J172749.5+534647
Observation data (J2000.0 epoch)
ConstellationDraco
Right ascension17h 27m 49.70s[1]
Declination+53° 46′ 51.98″[1]
Redshift0.207131[1]
Heliocentric radial velocity62,096 ± 9 km/s[1]
Distance2,984.7 ± 208.9 Mly (915.12 ± 64.06 Mpc)[1]
Group or clusterWHL J172749.7+534652
magnitude (J)14.80[1]
Characteristics
TypeFR II
Size~562,000 ly (172.4 kpc) (estimated)[1]
Other designations
2MASX J17274974+5346513, NVGRC J172749.9+534647, LEDA 2450625, RGZ J172749.5+534647, SDSS J172749.68+534651.6, WHL J172749.7+534652 BCG

RGZ J172749.5+534647 also known as J172749+534651, is a radio galaxy in the constellation of Draco. The redshift of the galaxy is (z) 0.207.[1]

Description

RGZ J172749.5+534647 is a red luminous galaxy[2] residing as the brightest cluster galaxy (BCG) of the galaxy cluster, WHL J172749.7+534652 with at least 18 confirmed galaxy member candidates. The r-band magnitude for the galaxy is estimated to be 17.22 magnitude.[3] The absolute magnitude of the galaxy is -22.77.[4]

The nucleus is categorized as active and it is a Fanaroff-Riley Class Type II radio galaxy.[4] A study published in 2011, reported the presence of both a radio core and hot spot features. The total radio luminosity is 26.6 W Hz-1 and the radio flux density is 1040.5 mJy at 1.4 GHz frequencies. The source has a total angular size of 146.4 arcseconds and a linear size of 496.37 kiloparsecs.[5]

The radio lobes are resolved, with the eastern radio lobe having a 1.4 GHz flux density of 188.2 mJy, while the western lobe has a flux density of 486.7 mJy, based on data made by the Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) at 3σ flux density cuts. The lengths of the lobes at 3σ cuts are 193 and 239 kiloparsecs respectively.[6] It is also a giant radio source approximately 4.5 arcseconds in extent and is further categorized as a double-lobed galaxy with a possible core-jet structure.[7]

References

  1. 1 2 3 4 5 6 7 8 "NED Search results for RGZ J172749.5+534647". NASA/IPAC Extragalactic Database. Retrieved 2026-06-09.
  2. ↑ Lopes, P. A. A. (September 2007). "Empirical photometric redshifts of luminous red galaxies and clusters in the Sloan Digital Sky Survey". Monthly Notices of the Royal Astronomical Society. 380 (4): 1608–1620. arXiv:0706.1580. Bibcode:2007MNRAS.380.1608L. doi:10.1111/j.1365-2966.2007.12203.x. ISSN 0035-8711.
  3. ↑ Wen, Z. L.; Han, J. L.; Liu, F. S. (2012-03-30). "A Catalog of 132,684 Clusters of Galaxies Identified from Sloan Digital Sky Survey III". The Astrophysical Journal Supplement Series. 199 (2): 34. arXiv:1202.6424. Bibcode:2012ApJS..199...34W. doi:10.1088/0067-0049/199/2/34. ISSN 0067-0049.
  4. 1 2 Ma, Zhixian; Xu, Haiguang; Zhu, Jie; Hu, Dan; Li, Weitian; Shan, Chenxi; Zhu, Zhenghao; Gu, Liyi; Li, Jinjin; Liu, Chengze; Wu, Xiangping (2019-02-01). "A Machine Learning Based Morphological Classification of 14,245 Radio AGNs Selected from the Best–Heckman Sample". The Astrophysical Journal Supplement Series. 240 (2): 34. arXiv:1812.07190. Bibcode:2019ApJS..240...34M. doi:10.3847/1538-4365/aaf9a2. ISSN 0067-0049.
  5. ↑ Kozieł-Wierzbowska, Dorota; Stasińska, Grażyna (2011-08-01). "FRII radio galaxies in the SDSS: Observational facts". Monthly Notices of the Royal Astronomical Society. 415 (2): 1013–1026. arXiv:1101.3223. doi:10.1111/j.1365-2966.2011.18346.x.
  6. ↑ Rodman, P E; Turner, R J; Shabala, S S; Banfield, J K; Wong, O I; Andernach, H; Garon, A F; Kapińska, A D; Norris, R P; Rudnick, L (2018-11-13). "Radio Galaxy Zoo: observational evidence for environment as the cause of radio source asymmetry". Monthly Notices of the Royal Astronomical Society. 482 (4): 5625–5641. arXiv:1811.03726. doi:10.1093/mnras/sty3070. ISSN 0035-8711.
  7. ↑ Proctor, D. D. (2016-06-01). "A Selection of Giant Radio Sources from NVSS". The Astrophysical Journal Supplement Series. 224 (2): 18. arXiv:1603.06895. Bibcode:2016ApJS..224...18P. doi:10.3847/0067-0049/224/2/18. ISSN 0067-0049.
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