IRAS 14026+4341

IRAS 14026+4341
SDSS image of IRAS 14026+4341.
Observation data (J2000.0 epoch)
ConstellationCanes Venatici
Right ascension14h 04m 38.80s[1]
Declination+43° 27′ 07.51″[1]
Redshift0.322894[1]
Heliocentric radial velocity96,801 km/s[1]
Distance3.740 Gly
Apparent magnitude (V)15.76
Apparent magnitude (B)16.12
Characteristics
TypeBAL;Sy1 HyLIRG[1]
Size~357,000 ly (109.47 kpc) (estimated)[1]
Notable featuresLuminous infrared galaxy, broad absorption-line quasar
Other designations
CSO 409, LEDA 84105, PB 1309, FBS 332, 2MASS J14043881+4327072, SDSS J140438.80+432707.4, FBS 1402+436, LAMOST J140438.80+432707.52, CXO J140438.8+432707[1]

IRAS 14026+4341 is a Seyfert type 1 galaxy located in the constellation of Canes Venatici. The redshift of the object is (z) 0.322[1] and it was first discovered as an infrared source from the Infra Red Astronomical Satellite (IRAS) catalogue in 1987 and later identified as a quasar in 1988.[2][3] This object is classified as a hyperluminous infrared galaxy due to its extreme luminosity and also a broad absorption-line quasar.[4][5]

Description

IRAS 14026+4341 is classified as a radio-quiet quasar and a Type 1 AGN.[4][6] The host is a bright medium-sized elliptical galaxy described as bulge-dominated, round and featureless by Hubble Space Telescope (HST) imaging.[7][8][9] The star formation rate is estimated to be 400 ± 300 Mʘ per year with its AGN and starburst bolometric luminosity estimated as 13.12 and 12.19 Lʘ.[10][11]

IRAS 14026+4341 is merging with a small companion galaxy which appears in the process of being obliterated by tidal forces.[8][9] According to imaging by both HST and optical imaging, it has a long and curved tidal tail, with an extension of more than seven arcseconds.[8][12] The structure of the tidal tail imaged with HST is found to have an elongated head towards the radius vector, with a bright knot feature having a luminosity of -18. The outer end of the tail is much brighter and sharply bounded, becoming wider as the distance from the nucleus increases. There are two compact faint knots superimposed on both sides of the galaxy. The nucleus itself is depicted as reddened and luminous.[8]

IRAS 14026+4341 is described as a weak emission-line quasar with heavy dust reddening. Based on observations, the broadband spectral energy distribution of the object is found to display a curve in wavelength ranges between the units of 1,200 Å and 10,000 Å and is characterized by steep increases at short wavelengths lower than 3,000 Å. However it does not have any signs of significant reddening at much longer wavelengths.[13]

The object is highly polarized based on ultraviolet and optical spectropolarimetry. According to observations, its flux spectrum is extremely steep with presence of both oxidated iron emission and Balmer lines in polarized light. There is also evidence of lowly polarized doubly ionized oxygen lines indicating dust scattering grains are either located within or mixed together with narrow-line gas.[14] X-ray variability was also detected for the first time in 2012.[15]

References

  1. ^ a b c d e f g h "NED search results for IRAS 14026+4341". NASA/IPAC Extragalactic Database. Retrieved 2025-08-09.
  2. ^ de Grijp, M. H. K.; Lub, J.; Miley, G. K. (July 1987). "Warm IRAS sources. I. A catalogue of AGN candidates from the point source catalog". Astronomy and Astrophysics Supplement Series. 70: 95–114. ISSN 0365-0138.
  3. ^ Low, F. J.; Huchra, J. P.; Kleinmann, S. G.; Cutri, R. M. (April 1988). "Infrared Color-selected Quasars and Seyfert 1 Galaxies". The Astrophysical Journal. 327: L41. Bibcode:1988ApJ...327L..41L. doi:10.1086/185136. ISSN 0004-637X.
  4. ^ a b Farrah, D.; Serjeant, S.; Efstathiou, A.; Rowan-Robinson, M.; Verma, A. (October 2002). "Submillimetre observations of hyperluminous infrared galaxies". Monthly Notices of the Royal Astronomical Society. 335 (4): 1163–1175. arXiv:astro-ph/0205422. Bibcode:2002MNRAS.335.1163F. doi:10.1046/j.1365-8711.2002.05698.x. ISSN 0035-8711.
  5. ^ Luo, B.; Brandt, W. N.; Alexander, D. M.; Stern, D.; Teng, S. H.; Arévalo, P.; Bauer, F. E.; Boggs, S. E.; Christensen, F. E.; Comastri, A.; Craig, W. W.; Farrah, D.; Gandhi, P.; Hailey, C. J.; Harrison, F. A. (October 2014). "Weak Hard X-Ray Emission from Broad Absorption Line Quasars: Evidence for Intrinsic X-Ray Weakness". The Astrophysical Journal. 794 (1): 70. arXiv:1408.3633. Bibcode:2014ApJ...794...70L. doi:10.1088/0004-637X/794/1/70. ISSN 0004-637X.
  6. ^ Ruiz, A.; Miniutti, G.; Panessa, F.; Carrera, F. J. (2010-06-01). "Spectral energy distribution of hyperluminous infrared galaxies". Astronomy & Astrophysics. 515: A99. Bibcode:2010A&A...515A..99R. doi:10.1051/0004-6361/200912235. ISSN 0004-6361.
  7. ^ Kim, Minjin; Ho, Luis C.; Peng, Chien Y.; Barth, Aaron J.; Im, Myungshin (October 2017). "Stellar Photometric Structures of the Host Galaxies of Nearby Type 1 Active Galactic Nuclei". The Astrophysical Journal Supplement Series. 232 (2): 21. arXiv:1710.02194. Bibcode:2017ApJS..232...21K. doi:10.3847/1538-4365/aa8a75. ISSN 0067-0049.
  8. ^ a b c d Hutchings, J. B.; Morris, S. C. (April 1995). "Imaging of Low Redshift QSOs with WFPC2". The Astronomical Journal. 109: 1541. arXiv:astro-ph/9502045. Bibcode:1995AJ....109.1541H. doi:10.1086/117383. ISSN 0004-6256.
  9. ^ a b Boyce, P. J.; Disney, M. J.; Blades, J. C.; Boksenberg, A.; Crane, P.; Deharveng, J. M.; Macchetto, F. D.; Mackay, C. D.; Sparks, W. B. (December 1996). "The Host Galaxies of IRAS-selected Quasi-stellar Objects". The Astrophysical Journal. 473 (2): 760–762. Bibcode:1996ApJ...473..760B. doi:10.1086/178187. ISSN 0004-637X.
  10. ^ Ruiz, A.; Risaliti, G.; Nardini, E.; Panessa, F.; Carrera, F. J. (January 2013). "Analysis of Spitzer-IRS spectra of hyperluminous infrared galaxies". Astronomy and Astrophysics. 549: A125. arXiv:1210.3915. Bibcode:2013A&A...549A.125R. doi:10.1051/0004-6361/201015257. ISSN 0004-6361.
  11. ^ Calderón, D.; Bauer, F. E.; Veilleux, S.; Graciá-Carpio, J.; Sturm, E.; Lira, P.; Schulze, S.; Kim, S. (2016-05-20). "Searching for molecular outflows in hyperluminous infrared galaxies". Monthly Notices of the Royal Astronomical Society. 460 (3): 3052–3062. doi:10.1093/mnras/stw1210. ISSN 0035-8711.
  12. ^ Hutchings, J. B.; Neff, S. G. (July 1992). "Optical Imaging of QSOs With 0.5 Arcsec Resolution". The Astronomical Journal. 104: 1. Bibcode:1992AJ....104....1H. doi:10.1086/116216. ISSN 0004-6256.
  13. ^ Jiang, Peng; Zhou, Hongyan; Ji, Tuo; Shu, Xinwen; Liu, Wenjuan; Wang, Jianguo; Dong, Xiaobo; Bai, Jinming; Wang, Huiyuan; Wang, Tinggui (2013-05-08). "Anomalously Steep Reddening Law in Quasars: An Exceptional Example Observed in Iras 14026+4341". The Astronomical Journal. 145 (6): 157. arXiv:1307.3305. Bibcode:2013AJ....145..157J. doi:10.1088/0004-6256/145/6/157. ISSN 0004-6256.
  14. ^ Hines, Dean C.; Schmidt, Gary D.; Gordon, Karl D.; Smith, Paul S.; Wills, Beverley J.; Allen, Richard G.; Sitko, Michael L. (December 2001). "Hubble Space Telescope Ultraviolet and Ground-based Optical Spectropolarimetry of IRAS Quasi-stellar Objects: Dusty Scattering in Luminous Active Galactic Nuclei". The Astrophysical Journal. 563 (2): 512–526. Bibcode:2001ApJ...563..512H. doi:10.1086/323954. ISSN 0004-637X.
  15. ^ Saez, C.; Brandt, W. N.; Gallagher, S. C.; Bauer, F. E.; Garmire, G. P. (November 2012). "The Long-term X-Ray Variability of Broad Absorption Line Quasars". The Astrophysical Journal. 759 (1): 42. arXiv:1209.1816. Bibcode:2012ApJ...759...42S. doi:10.1088/0004-637X/759/1/42. ISSN 0004-637X.
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