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IC 1262

IC 1262
SDSS image of IC 1262.
Observation data (J2000 epoch)
ConstellationHercules
Right ascension17h 33m 02.04s[1]
Declination+43° 45′ 34.88″[1]
Redshift0.032649[1]
Heliocentric radial velocity9,788 km/s ± 23[1]
Distance451 Mly (138.33 Mpc)[1]
Apparent magnitude (V)13.7[2]
Characteristics
TypecD;E[1]
Size~230,000 ly (70 kpc) (estimated)[1]
Other designations
4C +43.46, 2MASX J17330202+4345345, CGCG 226-025, GIN 639, PGC 60479, UGC 10900[1]

IC 1262 is an elliptical galaxy located in the constellation of Hercules. The redshift of the galaxy is (z) 0.032[1] and it was first discovered by the American astronomer, Lewis Swift in June 1890, who described it as a 14th magnitude galaxy.[3] it is the brightest cluster galaxy of a small galaxy group named after it, with at least 31 members and such is classified as a type cD galaxy.[4][5][6]

Description

IC 1262 is categorized as an early-type galaxy.[4][7] When observed it is found to have a presence of an arc-feature located east suggested as a recent galaxy merger, with a high surface brightness and such also classified to be a bright source of radio emission. There is also a region area that is located northwards from the arc-feature which it is further separated into other regions, namely the high and low surface brightness region.[8] The star formation of this galaxy has found to be only around 4.35 × 10−2 M☉ per year.[9] It is also found offset from its X-ray peak.[10]

The nucleus of the galaxy is active and it has been classified as a radio galaxy with an ultra steep radio spectrum. When observed, it has two extended radio lobes located in both north and south directions, with measured spectral indexes of −2.23 and −19.4. The flux density of the northern lobe at 325 MHz is estimated to be 341.2 ± 0.25 mJy whereas the southern radio lobe at 325 MHz is estimated to be around 855.1 ± 0.25 mJy. There is also presence of radio emission that found extending by more than 200 kiloparsecs over a wide area. Two inner X-ray cavities have been located north and south from the galaxy's center, with further confirmation of a much larger X-ray cavity on the outer side.[9][11]

A filamentary structure has been detected in IC 1262. When observed, the feature is shown to have a sharp and narrow appearance and running from north to south direction. A loop feature is also found north of IC 1262 with a measured length of 20 kiloparsecs.[5] Evidence also found the galaxy is surrounded by a halo of hot gas with a symmetric and smooth appearance.[12]

References

  1. ^ a b c d e f g h i "NED Search results for IC 1262". NASA/IPAC Extragalactic Database. Retrieved 2026-01-31.
  2. ^ "Revised IC Data for IC 1262". spider.seds.org. Retrieved 30 March 2024.
  3. ^ "Index Catalog Objects: IC 1250 - 1299". cseligman.com. Retrieved 2026-01-31.
  4. ^ a b Trinchieri, G.; Saporiti, C. (2004). "The Turmoil in IC1262". Proceedings of the Riddle of Cooling Flows in Galaxies and Clusters of Galaxies, Held in Charlottesville, VA, May 31 - June 4, 2003: 107. Bibcode:2004rcfg.proc..107T.
  5. ^ a b Trinchieri, G.; Breitschwerdt, D.; Pietsch, W.; Sulentic, J.; Wolter, A. (2007-02-01). "Evidence of unrelaxed IGM around IC 1262" (PDF). Astronomy & Astrophysics. 463 (1): 153–164. doi:10.1051/0004-6361:20066156. ISSN 0004-6361.
  6. ^ Hudson, Daniel S.; Henriksen, Mark J.; Colafrancesco, Sergio (February 2003). "A BeppoSAX Observation of the IC 1262 Galaxy Cluster". The Astrophysical Journal. 583 (2): 706–711. arXiv:astro-ph/0212308. Bibcode:2003ApJ...583..706H. doi:10.1086/345492. ISSN 0004-637X.
  7. ^ Trinchieri, Ginevra (January 2000). "Peculiar X-ray features in bright early-type galaxies". International Astronomical Union Colloquium. 174: 197–201. doi:10.1017/S0252921100054981. ISSN 0252-9211.
  8. ^ Trinchieri, G.; Pietsch, W. (2000). "Peculiar X-ray features in bright early-type galaxies". Astronomy and Astrophysics. 353: 487–497. arXiv:astro-ph/9911125. Bibcode:2000A&A...353..487T.
  9. ^ a b Pandge, M. B.; Sonkamble, S. S.; Parekh, Viral; Dabhade, Pratik; Parmar, Avni; Patil, M. K.; Raychaudhury, Somak (2019-01-08). "AGN Feedback in Galaxy Groups: A Detailed Study of X-Ray Features and Diffuse Radio Emission in IC 1262". The Astrophysical Journal. 870 (2): 62. arXiv:1811.05647. Bibcode:2019ApJ...870...62P. doi:10.3847/1538-4357/aaf105. ISSN 0004-637X.
  10. ^ Hudson, Daniel S.; Henriksen, Mark J. (2003-08-07), "Diffuse Nonthermal X-Ray Emission: Evidence of Cosmic-Ray Acceleration at the Shock Front in IC 1262", The Astrophysical Journal, 595 (1): L1–L4, arXiv:astro-ph/0308109, Bibcode:2003ApJ...595L...1H, doi:10.1086/378844, arXiv:astro-ph/0308109
  11. ^ Ubertosi, Francesco; Schellenberger, Gerrit; O’Sullivan, Ewan; Vrtilek, Jan; Giacintucci, Simona; David, Laurence P.; Forman, William; Gitti, Myriam; Venturi, Tiziana; Jones, Christine; Brighenti, Fabrizio (2024-01-01). "Jet Reorientation in Central Galaxies of Clusters and Groups: Insights from VLBA and Chandra Data". The Astrophysical Journal. 961 (1): 134. arXiv:2312.02283. Bibcode:2024ApJ...961..134U. doi:10.3847/1538-4357/ad11d8. ISSN 0004-637X.
  12. ^ Kim, Dong-Woo; Anderson, Craig; Burke, Douglas; D’Abrusco, Raffaele; Fabbiano, Giuseppina; Fruscione, Antonella; Lauer, Jennifer; McCollough, Michael; Morgan, Douglas; Mossman, Amy; O’Sullivan, Ewan; Paggi, Alessandro; Vrtilek, Saeqa; Trinchieri, Ginevra (2019-04-16). "Chandra Early-type Galaxy Atlas". The Astrophysical Journal Supplement Series. 241 (2): 36. arXiv:1812.02718. Bibcode:2019ApJS..241...36K. doi:10.3847/1538-4365/ab0ca4. ISSN 1538-4365.

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