Astronomy:NGC 6264

From HandWiki
NGC 6264
SDSS image of NGC 6264
Observation data (J2000 epoch)
ConstellationHercules
Right ascension 16h 57m 16.12s[1]
Declination+27° 50′ 58.56″[1]
Redshift0.033840[1]
Helio radial velocity10,145 ± 2 km/s[1]
Distance495.3 ± 34.7 Mly (151.85 ± 10.63 Mpc)[1]
Apparent magnitude (V)14.7[2]
Characteristics
TypeSb Sy2[1]
Size~154,000 ly (47.3 kpc) (estimated)[1]
Other designations
CGCG 169-015, MCG +05-40-009, IRAS-L 16552+2755, PGC 59306, UCM 1655+2755, WBL 625-001[1]

NGC 6264 is an active Seyfert galaxy located in the constellation of Hercules. The redshift of the galaxy is (z) 0.033[1] and it was first discovered in June 1864 by the German astronomer Albert Marth who described it as having a magnitude of 15 and is faint, small and also round.[3] This galaxy is known to host a triple peaked water megamaser.[4][5][6]

Description

NGC 6264 is categorized as a barred spiral galaxy of Type Sb or Type Sc+. The nucleus of this galaxy is known to be active and is classified as a Type 2 Seyfert galaxy.[7][8][9] The galaxy contains signatures of water maser emission with its own circumnuclear disk warped slightly and also having a thin appearance. The position angle of the disk is -85° and the inclination angle is 90°. The disk's inner and outer radius are 0.18 and 0.77 parsecs respectively.[10] The estimated mass of the Keplerian disk is 0.42 ± 0.03 x 107 Mʘ.[11]

A study has found the supermassive black hole lying in the center of NGC 6264 has a mass of 3.09 ± 0.42 x 107 Mʘ. The maser features have different acceleration ranges, with the masers in one of the clump features having velocities higher than at least 7 kilometers per second per year. In another clump, the masers have an acceleration of 3.96 ± 1.77 kilometers per second per year.[12] The total star formation of the galaxy is estimated to be around 1.4 Mʘ per year. Further evidence also suggests the active galactic nucleus (AGN) is Compton thick.[6] The bolometric luminosity of the AGN is 45.55 erg s-1.[4]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "NED Search results for NGC 6264". https://ned.ipac.caltech.edu/byname?objname=NGC+6264&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1. 
  2. ↑ "Revised NGC Data for NGC 6264". https://spider.seds.org/ngc/revngcic.cgi?NGC6264. 
  3. ↑ "New General Catalog Objects: NGC 6250 - 6299". https://cseligman.com/text/atlas/ngc62a.htm#6264. 
  4. ↑ 4.0 4.1 Kuo, C. Y.; Braatz, J. A.; Impellizzeri, C. M. V.; Gao, F.; Pesce, D.; Reid, M. J.; Condon, J.; Kamali, F.; Henkel, C. (2019-10-31). "The Megamaser Cosmology Project. XII. VLBI Imaging of H2O Maser Emission in Three Active Galaxies and the Effect of AGN Winds on Disk Dynamics". arXiv:1910.14314v2 [astro-ph.GA].
  5. ↑ Pesce, D. W.; Braatz, J. A.; Reid, M. J.; Riess, A. G.; Scolnic, D.; Condon, J. J.; Gao, F.; Henkel, C. et al. (2020-02-26). "The Megamaser Cosmology Project. XIII. Combined Hubble Constant Constraints". The Astrophysical Journal Letters 891 (1): L1. doi:10.3847/2041-8213/ab75f0. ISSN 2041-8205. Bibcode: 2020ApJ...891L...1P. 
  6. ↑ 6.0 6.1 Castangia, P.; Panessa, F.; Henkel, C.; Kadler, M.; Tarchi, A. (2013-10-22). "New Compton-thick AGN in the circumnuclear H2O maser hosts UGC 3789 and NGC 6264". Monthly Notices of the Royal Astronomical Society 436 (4): 3388–3398. doi:10.1093/mnras/stt1824. ISSN 1365-2966. https://academic.oup.com/mnras/article/436/4/3388/987270. 
  7. ↑ Vitores, A. G.; Zamorano, J.; Rego, M.; Alonso, O.; Gallego, J. (1996-07-01). "Photometric and morphological analysis of UCM galaxies. I. Observations and reductions. Morphological classifications" (in en). Astronomy and Astrophysics Supplement Series 118 (1): 7–34. doi:10.1051/aas:1996178. ISSN 0365-0138. https://aas.aanda.org/articles/aas/pdf/1996/10/ds1040.pdf. 
  8. ↑ Perez-Gonzalez, P. G.; de Paz, A. Gil; Zamorano, J.; Gallego, J.; Alonso-Herrero, A.; Aragon-Salamanca, A. (2002-09-19). "Stellar populations in local star-forming galaxies. I.-Data and modelling procedure". arXiv:astro-ph/0209396.
  9. ↑ Kondratko, Paul T.; Greenhill, Lincoln J.; Moran, James M. (November 2006). "Discovery of Water Maser Emission in Five AGNs and a Possible Correlation Between Water Maser and Nuclear 2-10 keV Luminosities" (in en). The Astrophysical Journal 652 (1): 136–145. doi:10.1086/507885. ISSN 0004-637X. Bibcode: 2006ApJ...652..136K. 
  10. ↑ Kuo, C. Y.; Braatz, J. A.; Condon, J. J.; Impellizzeri, C. M. V.; Lo, K. Y.; Zaw, I.; Schenker, M.; Henkel, C. et al. (January 2011). "The Megamaser Cosmology Project. III. Accurate Masses of Seven Supermassive Black Holes in Active Galaxies with Circumnuclear Megamaser Disks" (in en). The Astrophysical Journal 727 (1): 20. doi:10.1088/0004-637X/727/1/20. ISSN 0004-637X. Bibcode: 2011ApJ...727...20K. 
  11. ↑ Kuo, C. Y.; Reid, M. J.; Braatz, J. A.; Gao, F.; Impellizzeri, C. M. V.; Chien, W. T. (2018-06-01). "On Estimating the Mass of Keplerian Accretion Disks in H2O Maser Galaxies". The Astrophysical Journal 859 (2): 172. doi:10.3847/1538-4357/aabff1. ISSN 0004-637X. Bibcode: 2018ApJ...859..172K. 
  12. ↑ Kuo, C. Y.; Braatz, J. A.; Reid, M. J.; Lo, K. Y.; Condon, J. J.; Impellizzeri, C. M. V.; Henkel, C. (2013-04-08). "THE MEGAMASER COSMOLOGY PROJECT. V. AN ANGULAR-DIAMETER DISTANCE TO NGC 6264 AT 140 Mpc". The Astrophysical Journal 767 (2): 155. doi:10.1088/0004-637x/767/2/155. ISSN 0004-637X. Bibcode: 2013ApJ...767..155K. https://iopscience.iop.org/article/10.1088/0004-637X/767/2/155#apj465464s6. 



Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:NGC_6264&oldid=4287954"