Galaxia Seyfert (Galician Wikipedia)

Analysis of information sources in references of the Wikipedia article "Galaxia Seyfert" in Galician language version.

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archive.org

Seyfert, Carl K. (1943). "Nuclear Emission in Spiral Nebulae". The Astrophysical Journal 97: 28–40. Bibcode:1943ApJ....97...28S. doi:10.1086/144488.
Hubble, Edwin P. (1926). "Extragalactic nebulae". The Astrophysical Journal 64: 321–369. Bibcode:1926ApJ....64..321H. doi:10.1086/143018.
Reber, Grote (1944). "Cosmic Static". The Astrophysical Journal 100: 279–287. Bibcode:1944ApJ...100..279R. doi:10.1086/144668.
Walker, M. F. (1968). "Studies of Extragalactic Nebulae. V. Motions in the Seyfert Galaxy NGC 1068". The Astrophysical Journal 151: 71–97. Bibcode:1968ApJ...151...71W. doi:10.1086/149420.
Osterbrock, D. E.; Koski, A. T. (1976). "NGC 4151 and Markarian 6: Two intermediate-type Seyfert galaxies". Monthly Notices of the Royal Astronomical Society 176: 61–66. Bibcode:1976MNRAS.176P..61O. doi:10.1093/mnras/176.1.61p.
Osterbrock, Donald E.; Ferland, Gary J. (2006). Astrophysics of Gaseous Nebulae and Active Galactic Nuclei. Sausalito, CA: University Science Books. ISBN 978-1-891389-34-4.
Pradhan, Anil K.; Nahar, Sultana N. (2011). Atomic Astrophysics and Spectroscopy. Cambridge University Press. pp. 278–304. ISBN 978-0-521-82536-8.
Boller, T.; Brandt, W. N.; Fink, H. (1996). "Soft X-ray properties of narrow-line Seyfert 1 galaxies". Astronomy and Astrophysics 305: 53. Bibcode:1996A&A...305...53B. arXiv:astro-ph/9504093.
Halliday, Ian (1969). "Advances in Astronomy Seyfert Galaxies and Quasars". Journal of the Royal Astronomical Society of Canada 63: 91. Bibcode:1969JRASC..63...91H.
Scalzi, John (2003). The Rough Guide to the Universe. Rough Guides. pp. 250. ISBN 1-85828-939-4.

archive.today

Davidsen, Arthur F. (1993). "Far-Ultraviolet Astronomy on the Astro-1 Space Shuttle Mission". Science 259 (5093): 327–334. Bibcode:1993Sci...259..327D. PMID 17832344. doi:10.1126/science.259.5093.327. Arquivado dende o orixinal o 11 de outubro de 2013. Consultado o 29 de xuño de 2017.

arxiv.org

Heinzeller, D.; Duschl, W. J. (2007). "On the Eddington limit in accretion discs". Monthly Notices of the Royal Astronomical Society 374 (3): 1146–1154. Bibcode:2007MNRAS.374.1146H. arXiv:astro-ph/0610742. doi:10.1111/j.1365-2966.2006.11233.x.
Goad, M. R.; Korista, K. T.; Ruff, A. J. (2012). "The broad emission-line region: the conﬂuence of the outer accretion disc with the inner edge of the dusty torus". Monthly Notices of the Royal Astronomical Society 426 (4): 3086–3111. Bibcode:2012MNRAS.426.3086G. arXiv:1207.6339. doi:10.1111/j.1365-2966.2012.21808.x.
Peterson, B. M.; Horne, K. (2004). "Echo mapping of active galactic nuclei". Astronomische Nachrichten 325 (3): 248–251. Bibcode:2004AN....325..248P. arXiv:astro-ph/0407538. doi:10.1002/asna.200310207.
Peterson, B. M.; Ferrarese, L.; Gilbert, K. M.; Kaspi, S.; Malkan, M. A.; et al. (2004). "Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei. II. A Homogeneous Analysis of a Large Reverberation-Mapping Database". The Astrophysical Journal 613 (2): 682–699. Bibcode:2004ApJ...613..682P. arXiv:astro-ph/0407299. doi:10.1086/423269.
Singh, Veeresh; Shastri, Prajval; Risaliti, Guido (2011). "X-ray spectral properties of Seyfert galaxies and the uniﬁcation scheme". Astronomy and Astrophysics 532: A84. Bibcode:2011A&A...532A..84S. arXiv:1101.0252. doi:10.1051/0004-6361/201016387.
Ho, Luis C. (1996). "Optical spectroscopy of LINERs and low luminosity Seyfert nuclei" (PDF). ASP Conference Series 103: 103. Bibcode:1996ASPC..103..103H. arXiv:astro-ph/9605190.
Starling, R. L. C.; Page, M. J.; Branduardi-Raymont, G.; Breeveld, A. A.; Soria, R.; et al. (2005). "The Seyfert-Liner Galaxy NGC 7213: An XMM-Newton Observation". Astrophysics and Space Science 300 (1-3): 81–86. Bibcode:2005Ap&SS.300...81S. arXiv:astro-ph/0412017. doi:10.1007/s10509-005-1174-y.
Boller, T.; Brandt, W. N.; Fink, H. (1996). "Soft X-ray properties of narrow-line Seyfert 1 galaxies". Astronomy and Astrophysics 305: 53. Bibcode:1996A&A...305...53B. arXiv:astro-ph/9504093.
Mathur, S.; Grupe, D. (2005). "Black hole growth by accretion". Astronomy and Astrophysics 432 (2): 463–466. Bibcode:2005A&A...432..463M. arXiv:astro-ph/0407512. doi:10.1051/0004-6361:20041717.
Komossa, Stefanie (2007). "Narrow-Line Seyfert 1 Galaxies". arXiv:0710.3326 [astro-ph].
Mathur, S. (2000). "Narrow Line Seyfert 1 Galaxies and the Evolution of Galaxies & Active Galaxies". Monthly Notices of the Royal Astronomical Society 314 (4): L17. Bibcode:2000MNRAS.314L..17M. arXiv:astro-ph/0003111. doi:10.1046/j.1365-8711.2000.03530.x.
Bekhti, Nadya Ben; Winkel, Benjamin; Richter, Philipp; Kerp, Jürgen; Klein, Ulrich (setembro de 2011). "On the Origin of Gaseous Galaxy Halos – Low-Column Density Gas in the Milky Way Halo". En von Berlepsch, Regina. Zooming In: The Cosmos at High Resolution. Annual Meeting of the Astronomische Gesellschaft. University of Bonn. 15–16 de setembro de 2010. Reviews in Modern Astronomy. John Wiley & Sons. pp. 117–130. ISBN 9783527411139. arXiv:1102.5205. doi:10.1002/9783527644384.ch7.
Fabian, A. C.; Sanders, J. S.; Allen, S. W.; Crawford, C. S.; Iwasawa, K.; et al. (setembro de 2003). "A deep Chandra observation of the Perseus cluster: Shocks and ripples". Monthly Notices of the Royal Astronomical Society 344 (3): L43–L47. Bibcode:2003MNRAS.344L..43F. arXiv:astro-ph/0306036. doi:10.1046/j.1365-8711.2003.06902.x.
Evans, D. A.; Summers, A. C.; Hardcastle, M. J.; Kraft, R. P.; Gandhi, P.; et al. (novembro de 2011). "The Suzaku View of the Disk-Jet Connection in the Low-excitation Radio Galaxy NGC 6251". The Astrophysical Journal Letters 741 (1): L4. Bibcode:2011ApJ...741L...4E. arXiv:1109.6584. doi:10.1088/2041-8205/741/1/L4.

bas.bg

astro.bas.bg

Petrov, G. T., ed. (2004). "Active Galaxy Nuclei". Bulgarian Academy of Sciences/Institute of Astronomy. Consultado o 9 de decembro de 2013.

britannica.com

"Forbidden lines". Encyclopædia Britannica. 2013. Consultado o 27 de novembro de 2013.

caltech.edu

ned.ipac.caltech.edu

Peterson, Bradley M. (1997). An Introduction to Active Galactic Nuclei. Cambridge University Press. ISBN 978-0-521-47911-0.
Weedman, Daniel W. (1977). "Seyfert Galaxies". Annual Review of Astronomy and Astrophysics 15: 69–95. Bibcode:1977ARA&A..15...69W. doi:10.1146/annurev.aa.15.090177.000441.
Blandford, Roger D. "Active Galaxies and Quasistellar Objects, Accretion". NASA/IPAC Extragalactic Database. Consultado o 6 de decembro de 2013.
Barthel, Peter (1991). "Active galaxies and quasistellar objects, interrelations of various types". En Maran, Stephen P. The Astronomy and Astrophysics Encyclopedia. Wiley-Interscience. ISBN 978-0-471-28941-8.
"Seyfert galaxies". California Institute of Technology. Consultado o 10 de outubro de 2013.
Ho, Luis C. (1996). "Optical spectroscopy of LINERs and low luminosity Seyfert nuclei" (PDF). ASP Conference Series 103: 103. Bibcode:1996ASPC..103..103H. arXiv:astro-ph/9605190.

chiba-u.jp

ppl.phys.chiba-u.jp

Yoshida, Shigeru. "The Eddington Limit". Department of Physics, Chiba University. Consultado o 7 de decembro de 2013.

colorado.edu

jila.colorado.edu

Armitage, Phil (2004). "Astrophysics 2, lecture 27: Active galaxies - the Unified Model" (PDF). ASTR 3830 Lecture Notes. University of Colorado Boulder. Consultado o 10 de novembro de 2013.

doi.org

dx.doi.org

Maiolino, R.; Rieke, G. H. (1995). "Low-Luminosity and Obscured Seyfert Nuclei in Nearby Galaxies". The Astrophysical Journal 454: 95–105. Bibcode:1995ApJ...454...95M. doi:10.1086/176468.
Davidsen, Arthur F. (1993). "Far-Ultraviolet Astronomy on the Astro-1 Space Shuttle Mission". Science 259 (5093): 327–334. Bibcode:1993Sci...259..327D. PMID 17832344. doi:10.1126/science.259.5093.327. Arquivado dende o orixinal o 11 de outubro de 2013. Consultado o 29 de xuño de 2017.
Seyfert, Carl K. (1943). "Nuclear Emission in Spiral Nebulae". The Astrophysical Journal 97: 28–40. Bibcode:1943ApJ....97...28S. doi:10.1086/144488.
Hubble, Edwin P. (1926). "Extragalactic nebulae". The Astrophysical Journal 64: 321–369. Bibcode:1926ApJ....64..321H. doi:10.1086/143018.
Reber, Grote (1944). "Cosmic Static". The Astrophysical Journal 100: 279–287. Bibcode:1944ApJ...100..279R. doi:10.1086/144668.
Bolton, J. G.; Stanley, G. J. (1948). "Observations on the Variable Source of Cosmic Radio Frequency Radiation in the Constellation of Cygnus". Australian Journal of Scientific Research A 1: 58–69. Bibcode:1948AuSRA...1...58B. doi:10.1071/ch9480058.
Hanbury Brown, R.; Jennison, R. C.; Das Gupta, M. K. (1952). "Apparent Angular Sizes of Discrete Radio Sources: Observations at Jodrell Bank, Manchester". Nature 170 (4338): 1061–1063. Bibcode:1952Natur.170.1061H. doi:10.1038/1701061a0.
Walker, M. F. (1968). "Studies of Extragalactic Nebulae. V. Motions in the Seyfert Galaxy NGC 1068". The Astrophysical Journal 151: 71–97. Bibcode:1968ApJ...151...71W. doi:10.1086/149420.
Weedman, Daniel W. (1977). "Seyfert Galaxies". Annual Review of Astronomy and Astrophysics 15: 69–95. Bibcode:1977ARA&A..15...69W. doi:10.1146/annurev.aa.15.090177.000441.
Peterson, S. D. (1973). "Optical Positions of the Markarian Galaxies". The Astrophysical Journal 78 (9): 811–827. Bibcode:1973AJ.....78..811P. doi:10.1086/111488.
de Vancouleurs, G.; de Vancouleurs, A. (1968). Photographic, Photometric, and Spectroscopic Observations of Seyfert Galaxies. Proceedings of the Conference on Seyfert Galaxies and Related Objects. 14–16 de febreiro de 1968. University of Arizona. The Astronomical Journal 73 (9). pp. 858–861. Bibcode:1968AJ.....73..858D. doi:10.1086/110717.
Adams, Thomas F. (1977). "A Survey of the Seyfert Galaxies Based on Large-Scale Image-Tube Plate". The Astrophysical Journal Supplement 33: 19–34. Bibcode:1977ApJS...33...19A. doi:10.1086/190416.
Weedman, D. W. (1973). "A Photometric Study of Markarian Galaxies". The Astrophysical Journal 183: 29–40. Bibcode:1973ApJ...183...29W. doi:10.1086/152205.
Osterbrock, D. E.; Koski, A. T. (1976). "NGC 4151 and Markarian 6: Two intermediate-type Seyfert galaxies". Monthly Notices of the Royal Astronomical Society 176: 61–66. Bibcode:1976MNRAS.176P..61O. doi:10.1093/mnras/176.1.61p.
Osterbrock, D. E.; Martel, A. (1993). "Spectroscopic study of the CfA sample of Seyfert galaxies". The Astrophysical Journal 414 (2): 552–562. Bibcode:1993ApJ...414..552O. doi:10.1086/173102.
Heinzeller, D.; Duschl, W. J. (2007). "On the Eddington limit in accretion discs". Monthly Notices of the Royal Astronomical Society 374 (3): 1146–1154. Bibcode:2007MNRAS.374.1146H. arXiv:astro-ph/0610742. doi:10.1111/j.1365-2966.2006.11233.x.
Goad, M. R.; Korista, K. T.; Ruff, A. J. (2012). "The broad emission-line region: the conﬂuence of the outer accretion disc with the inner edge of the dusty torus". Monthly Notices of the Royal Astronomical Society 426 (4): 3086–3111. Bibcode:2012MNRAS.426.3086G. arXiv:1207.6339. doi:10.1111/j.1365-2966.2012.21808.x.
Peterson, B. M.; Horne, K. (2004). "Echo mapping of active galactic nuclei". Astronomische Nachrichten 325 (3): 248–251. Bibcode:2004AN....325..248P. arXiv:astro-ph/0407538. doi:10.1002/asna.200310207.
Peterson, B. M.; Ferrarese, L.; Gilbert, K. M.; Kaspi, S.; Malkan, M. A.; et al. (2004). "Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei. II. A Homogeneous Analysis of a Large Reverberation-Mapping Database". The Astrophysical Journal 613 (2): 682–699. Bibcode:2004ApJ...613..682P. arXiv:astro-ph/0407299. doi:10.1086/423269.
Haardt, F.; Maraschi, L. (1991). "A two-phase model for the X-ray emission from Seyfert galaxies". The Astrophysical Journal Letters 380: L51–L54. Bibcode:1991ApJ...380L..51H. doi:10.1086/186171.
Singh, Veeresh; Shastri, Prajval; Risaliti, Guido (2011). "X-ray spectral properties of Seyfert galaxies and the uniﬁcation scheme". Astronomy and Astrophysics 532: A84. Bibcode:2011A&A...532A..84S. arXiv:1101.0252. doi:10.1051/0004-6361/201016387.
Osterbrock, D. E. (1981). "Seyfert galaxies with weak broad H alpha emission lines". The Astrophysical Journal 249: 462–470. Bibcode:1981ApJ...249..462O. doi:10.1086/159306.
Starling, R. L. C.; Page, M. J.; Branduardi-Raymont, G.; Breeveld, A. A.; Soria, R.; et al. (2005). "The Seyfert-Liner Galaxy NGC 7213: An XMM-Newton Observation". Astrophysics and Space Science 300 (1-3): 81–86. Bibcode:2005Ap&SS.300...81S. arXiv:astro-ph/0412017. doi:10.1007/s10509-005-1174-y.
Osterbrock, D. E.; Pogge, R. W. (1985). "The spectra of narrow-line Seyfert 1 galaxies". The Astrophysical Journal 297: 166–176. Bibcode:1985ApJ...297..166O. doi:10.1086/163513.
Mathur, S.; Grupe, D. (2005). "Black hole growth by accretion". Astronomy and Astrophysics 432 (2): 463–466. Bibcode:2005A&A...432..463M. arXiv:astro-ph/0407512. doi:10.1051/0004-6361:20041717.
Mathur, S. (2000). "Narrow Line Seyfert 1 Galaxies and the Evolution of Galaxies & Active Galaxies". Monthly Notices of the Royal Astronomical Society 314 (4): L17. Bibcode:2000MNRAS.314L..17M. arXiv:astro-ph/0003111. doi:10.1046/j.1365-8711.2000.03530.x.
de Vaucouleurs, Gérard (abril de 1973). "Southern Galaxies. VI. Luminosity Distribution in the Seyfert Galaxy NGC 1566". The Astrophysical Journal 181: 31–50. Bibcode:1973ApJ...181...31D. doi:10.1086/152028.
Bekhti, Nadya Ben; Winkel, Benjamin; Richter, Philipp; Kerp, Jürgen; Klein, Ulrich (setembro de 2011). "On the Origin of Gaseous Galaxy Halos – Low-Column Density Gas in the Milky Way Halo". En von Berlepsch, Regina. Zooming In: The Cosmos at High Resolution. Annual Meeting of the Astronomische Gesellschaft. University of Bonn. 15–16 de setembro de 2010. Reviews in Modern Astronomy. John Wiley & Sons. pp. 117–130. ISBN 9783527411139. arXiv:1102.5205. doi:10.1002/9783527644384.ch7.
Fabian, A. C.; Sanders, J. S.; Allen, S. W.; Crawford, C. S.; Iwasawa, K.; et al. (setembro de 2003). "A deep Chandra observation of the Perseus cluster: Shocks and ripples". Monthly Notices of the Royal Astronomical Society 344 (3): L43–L47. Bibcode:2003MNRAS.344L..43F. arXiv:astro-ph/0306036. doi:10.1046/j.1365-8711.2003.06902.x.
Reynolds, Christopher S. (28 de febreiro de 2013). "Astrophysics: Black holes in a spin". Nature 494 (7438): 432–433. Bibcode:2013Natur.494..432R. PMID 23446411. doi:10.1038/494432a.
Evans, D. A.; Summers, A. C.; Hardcastle, M. J.; Kraft, R. P.; Gandhi, P.; et al. (novembro de 2011). "The Suzaku View of the Disk-Jet Connection in the Low-excitation Radio Galaxy NGC 6251". The Astrophysical Journal Letters 741 (1): L4. Bibcode:2011ApJ...741L...4E. arXiv:1109.6584. doi:10.1088/2041-8205/741/1/L4.

eso.org

"Starving Black Hole Returns Brilliant Galaxy to the Shadows". www.eso.org. Consultado o 20 de setembro de 2016.
"ESO’s New Technology Telescope Revisits NGC 6300". ESO Picture of the Week. European Southern Observatory. Consultado o 3 de marzo de 2015.

harvard.edu

adsabs.harvard.edu

Maiolino, R.; Rieke, G. H. (1995). "Low-Luminosity and Obscured Seyfert Nuclei in Nearby Galaxies". The Astrophysical Journal 454: 95–105. Bibcode:1995ApJ...454...95M. doi:10.1086/176468.
Davidsen, Arthur F. (1993). "Far-Ultraviolet Astronomy on the Astro-1 Space Shuttle Mission". Science 259 (5093): 327–334. Bibcode:1993Sci...259..327D. PMID 17832344. doi:10.1126/science.259.5093.327. Arquivado dende o orixinal o 11 de outubro de 2013. Consultado o 29 de xuño de 2017.
Seyfert, Carl K. (1943). "Nuclear Emission in Spiral Nebulae". The Astrophysical Journal 97: 28–40. Bibcode:1943ApJ....97...28S. doi:10.1086/144488.
Hubble, Edwin P. (1926). "Extragalactic nebulae". The Astrophysical Journal 64: 321–369. Bibcode:1926ApJ....64..321H. doi:10.1086/143018.
Reber, Grote (1944). "Cosmic Static". The Astrophysical Journal 100: 279–287. Bibcode:1944ApJ...100..279R. doi:10.1086/144668.
Bolton, J. G.; Stanley, G. J. (1948). "Observations on the Variable Source of Cosmic Radio Frequency Radiation in the Constellation of Cygnus". Australian Journal of Scientific Research A 1: 58–69. Bibcode:1948AuSRA...1...58B. doi:10.1071/ch9480058.
Hanbury Brown, R.; Jennison, R. C.; Das Gupta, M. K. (1952). "Apparent Angular Sizes of Discrete Radio Sources: Observations at Jodrell Bank, Manchester". Nature 170 (4338): 1061–1063. Bibcode:1952Natur.170.1061H. doi:10.1038/1701061a0.
Walker, M. F. (1968). "Studies of Extragalactic Nebulae. V. Motions in the Seyfert Galaxy NGC 1068". The Astrophysical Journal 151: 71–97. Bibcode:1968ApJ...151...71W. doi:10.1086/149420.
Weedman, Daniel W. (1977). "Seyfert Galaxies". Annual Review of Astronomy and Astrophysics 15: 69–95. Bibcode:1977ARA&A..15...69W. doi:10.1146/annurev.aa.15.090177.000441.
Peterson, S. D. (1973). "Optical Positions of the Markarian Galaxies". The Astrophysical Journal 78 (9): 811–827. Bibcode:1973AJ.....78..811P. doi:10.1086/111488.
de Vancouleurs, G.; de Vancouleurs, A. (1968). Photographic, Photometric, and Spectroscopic Observations of Seyfert Galaxies. Proceedings of the Conference on Seyfert Galaxies and Related Objects. 14–16 de febreiro de 1968. University of Arizona. The Astronomical Journal 73 (9). pp. 858–861. Bibcode:1968AJ.....73..858D. doi:10.1086/110717.
Adams, Thomas F. (1977). "A Survey of the Seyfert Galaxies Based on Large-Scale Image-Tube Plate". The Astrophysical Journal Supplement 33: 19–34. Bibcode:1977ApJS...33...19A. doi:10.1086/190416.
Weedman, D. W. (1973). "A Photometric Study of Markarian Galaxies". The Astrophysical Journal 183: 29–40. Bibcode:1973ApJ...183...29W. doi:10.1086/152205.
Osterbrock, D. E.; Koski, A. T. (1976). "NGC 4151 and Markarian 6: Two intermediate-type Seyfert galaxies". Monthly Notices of the Royal Astronomical Society 176: 61–66. Bibcode:1976MNRAS.176P..61O. doi:10.1093/mnras/176.1.61p.
Osterbrock, D. E.; Martel, A. (1993). "Spectroscopic study of the CfA sample of Seyfert galaxies". The Astrophysical Journal 414 (2): 552–562. Bibcode:1993ApJ...414..552O. doi:10.1086/173102.
Heinzeller, D.; Duschl, W. J. (2007). "On the Eddington limit in accretion discs". Monthly Notices of the Royal Astronomical Society 374 (3): 1146–1154. Bibcode:2007MNRAS.374.1146H. arXiv:astro-ph/0610742. doi:10.1111/j.1365-2966.2006.11233.x.
Goad, M. R.; Korista, K. T.; Ruff, A. J. (2012). "The broad emission-line region: the conﬂuence of the outer accretion disc with the inner edge of the dusty torus". Monthly Notices of the Royal Astronomical Society 426 (4): 3086–3111. Bibcode:2012MNRAS.426.3086G. arXiv:1207.6339. doi:10.1111/j.1365-2966.2012.21808.x.
Peterson, B. M.; Horne, K. (2004). "Echo mapping of active galactic nuclei". Astronomische Nachrichten 325 (3): 248–251. Bibcode:2004AN....325..248P. arXiv:astro-ph/0407538. doi:10.1002/asna.200310207.
Peterson, B. M.; Ferrarese, L.; Gilbert, K. M.; Kaspi, S.; Malkan, M. A.; et al. (2004). "Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei. II. A Homogeneous Analysis of a Large Reverberation-Mapping Database". The Astrophysical Journal 613 (2): 682–699. Bibcode:2004ApJ...613..682P. arXiv:astro-ph/0407299. doi:10.1086/423269.
Haardt, F.; Maraschi, L. (1991). "A two-phase model for the X-ray emission from Seyfert galaxies". The Astrophysical Journal Letters 380: L51–L54. Bibcode:1991ApJ...380L..51H. doi:10.1086/186171.
Singh, Veeresh; Shastri, Prajval; Risaliti, Guido (2011). "X-ray spectral properties of Seyfert galaxies and the uniﬁcation scheme". Astronomy and Astrophysics 532: A84. Bibcode:2011A&A...532A..84S. arXiv:1101.0252. doi:10.1051/0004-6361/201016387.
Osterbrock, D. E. (1981). "Seyfert galaxies with weak broad H alpha emission lines". The Astrophysical Journal 249: 462–470. Bibcode:1981ApJ...249..462O. doi:10.1086/159306.
Ho, Luis C. (1996). "Optical spectroscopy of LINERs and low luminosity Seyfert nuclei" (PDF). ASP Conference Series 103: 103. Bibcode:1996ASPC..103..103H. arXiv:astro-ph/9605190.
Heckman, T. M. (1980). "An optical and radio survey of the nuclei of bright galaxies - Activity in normal galactic nuclei". Astronomy and Astrophysics 87 (1-2): 152–164. Bibcode:1980A&A....87..152H.
Starling, R. L. C.; Page, M. J.; Branduardi-Raymont, G.; Breeveld, A. A.; Soria, R.; et al. (2005). "The Seyfert-Liner Galaxy NGC 7213: An XMM-Newton Observation". Astrophysics and Space Science 300 (1-3): 81–86. Bibcode:2005Ap&SS.300...81S. arXiv:astro-ph/0412017. doi:10.1007/s10509-005-1174-y.
Osterbrock, D. E.; Pogge, R. W. (1985). "The spectra of narrow-line Seyfert 1 galaxies". The Astrophysical Journal 297: 166–176. Bibcode:1985ApJ...297..166O. doi:10.1086/163513.
Boller, T.; Brandt, W. N.; Fink, H. (1996). "Soft X-ray properties of narrow-line Seyfert 1 galaxies". Astronomy and Astrophysics 305: 53. Bibcode:1996A&A...305...53B. arXiv:astro-ph/9504093.
Mathur, S.; Grupe, D. (2005). "Black hole growth by accretion". Astronomy and Astrophysics 432 (2): 463–466. Bibcode:2005A&A...432..463M. arXiv:astro-ph/0407512. doi:10.1051/0004-6361:20041717.
Mathur, S. (2000). "Narrow Line Seyfert 1 Galaxies and the Evolution of Galaxies & Active Galaxies". Monthly Notices of the Royal Astronomical Society 314 (4): L17. Bibcode:2000MNRAS.314L..17M. arXiv:astro-ph/0003111. doi:10.1046/j.1365-8711.2000.03530.x.
Halliday, Ian (1969). "Advances in Astronomy Seyfert Galaxies and Quasars". Journal of the Royal Astronomical Society of Canada 63: 91. Bibcode:1969JRASC..63...91H.
de Vaucouleurs, Gérard (abril de 1973). "Southern Galaxies. VI. Luminosity Distribution in the Seyfert Galaxy NGC 1566". The Astrophysical Journal 181: 31–50. Bibcode:1973ApJ...181...31D. doi:10.1086/152028.
Humphreys, E. M. L.; Greenhill, L. J.; Reid, M. J.; Argon, A. L.; Moran, J. M. (2004). "Improved Maser Distance to NGC 4258". Bulletin of the American Astronomical Society 36: 1468. Bibcode:2004AAS...205.7301H.
Fabian, A. C.; Sanders, J. S.; Allen, S. W.; Crawford, C. S.; Iwasawa, K.; et al. (setembro de 2003). "A deep Chandra observation of the Perseus cluster: Shocks and ripples". Monthly Notices of the Royal Astronomical Society 344 (3): L43–L47. Bibcode:2003MNRAS.344L..43F. arXiv:astro-ph/0306036. doi:10.1046/j.1365-8711.2003.06902.x.
Reynolds, Christopher S. (28 de febreiro de 2013). "Astrophysics: Black holes in a spin". Nature 494 (7438): 432–433. Bibcode:2013Natur.494..432R. PMID 23446411. doi:10.1038/494432a.
Evans, D. A.; Summers, A. C.; Hardcastle, M. J.; Kraft, R. P.; Gandhi, P.; et al. (novembro de 2011). "The Suzaku View of the Disk-Jet Connection in the Low-excitation Radio Galaxy NGC 6251". The Astrophysical Journal Letters 741 (1): L4. Bibcode:2011ApJ...741L...4E. arXiv:1109.6584. doi:10.1088/2041-8205/741/1/L4.

jhu.edu

praxis.pha.jhu.edu

Davidsen, Arthur F. (1993). "Far-Ultraviolet Astronomy on the Astro-1 Space Shuttle Mission". Science 259 (5093): 327–334. Bibcode:1993Sci...259..327D. PMID 17832344. doi:10.1126/science.259.5093.327. Arquivado dende o orixinal o 11 de outubro de 2013. Consultado o 29 de xuño de 2017.

mpg.de

www3.mpifr-bonn.mpg.de

Massi, M. "Active Galaxies" (PDF). Max Planck Institute for Radio Astronomy. Consultado o 10 de novembro de 2013.

nasa.gov

imagine.gsfc.nasa.gov

"Active Galaxies and Quasars". NASA/GSFC. Consultado o 21 de novembro de 2013.

apod.nasa.gov

Nemiroff, R.; Bonnell, J., eds. (15 de febreiro de 2000). "M106: A Spiral Galaxy with a Strange Core". Astronomy Picture of the Day. NASA.

nature.com

Reynolds, Christopher S. (28 de febreiro de 2013). "Astrophysics: Black holes in a spin". Nature 494 (7438): 432–433. Bibcode:2013Natur.494..432R. PMID 23446411. doi:10.1038/494432a.

nih.gov

ncbi.nlm.nih.gov

Davidsen, Arthur F. (1993). "Far-Ultraviolet Astronomy on the Astro-1 Space Shuttle Mission". Science 259 (5093): 327–334. Bibcode:1993Sci...259..327D. PMID 17832344. doi:10.1126/science.259.5093.327. Arquivado dende o orixinal o 11 de outubro de 2013. Consultado o 29 de xuño de 2017.
Reynolds, Christopher S. (28 de febreiro de 2013). "Astrophysics: Black holes in a spin". Nature 494 (7438): 432–433. Bibcode:2013Natur.494..432R. PMID 23446411. doi:10.1038/494432a.

open.edu

"Introduction to active galaxies". OpenLearn. The Open University. Arquivado dende o orixinal o 20 de xaneiro de 2018. Consultado o 9 de decembro de 2013.

rug.nl

astro.rug.nl

Popping, Gergö (18 de xullo de 2008). "AGN host galaxies and their environment" (PDF). University of Groningen. Arquivado dende o orixinal (PDF) o 04 de marzo de 2016. Consultado o 9 de decembro de 2013.

spacetelescope.org

"Secrets at the heart of NGC 5793". SpaceTelescope.org. Hubble Picture of the Week. 17 de marzo de 2014. Consultado o 12 de abril de 2014.
"A wanderer dancing the dance of stars and space". SpaceTelescope.org. Hubble Picture of the Week. 24 de decembro de 2012. Arquivado dende o orixinal o 13 de maio de 2019. Consultado o 29 de xuño de 2017.
"A spiral snowflake". spacetelescope.org. Consultado o 9 de maio de 2016.
"Golden rings of star formation". SpaceTelescope.org. Hubble Picture of the Week. 9 de xuño de 2014. Consultado o 12 de xuño de 2014.

u-strasbg.fr

simbad.u-strasbg.fr

"Object query: M106". SIMBAD Astronomical Object Database. Consultado o 1 de xullo de 2014.

ugto.mx

astro.ugto.mx

Torres-Papaqui, Juan Pablo. "TEMA 1. Introduction Active Galactic Nuclei: History and Overview" (PDF). Universidad de Guanajuato. Arquivado dende o orixinal (PDF) o 23 de outubro de 2013. Consultado o 8 de outubro de 2013.

uky.edu

pa.uky.edu

Shlosman, I. (6 de maio de 1999). "Seyfert Galaxies". University of Kentucky. Consultado o 30 de outubro de 2013.

uni.edu

Morgan, Siobahn. "Distant and Weird Galaxies". Astronomy Course Notes and Supplementary Material. University of Northern Iowa. Consultado o 10 de outubro de 2013.

uoregon.edu

zebu.uoregon.edu

Soper, D. E. "Seyfert Galaxies". University of Oregon. Arquivado dende o orixinal o 23 de outubro de 2013. Consultado o 11 de outubro de 2013.

utk.edu

csep10.phys.utk.edu

"Quasars". Astronomy 162 Lecture Notes. University of Tennessee, Department of Physics & Astronomy. Consultado o 21 de novembro de 2013.

web.archive.org

Soper, D. E. "Seyfert Galaxies". University of Oregon. Arquivado dende o orixinal o 23 de outubro de 2013. Consultado o 11 de outubro de 2013.
"Introduction to active galaxies". OpenLearn. The Open University. Arquivado dende o orixinal o 20 de xaneiro de 2018. Consultado o 9 de decembro de 2013.
Torres-Papaqui, Juan Pablo. "TEMA 1. Introduction Active Galactic Nuclei: History and Overview" (PDF). Universidad de Guanajuato. Arquivado dende o orixinal (PDF) o 23 de outubro de 2013. Consultado o 8 de outubro de 2013.
Popping, Gergö (18 de xullo de 2008). "AGN host galaxies and their environment" (PDF). University of Groningen. Arquivado dende o orixinal (PDF) o 04 de marzo de 2016. Consultado o 9 de decembro de 2013.
"A wanderer dancing the dance of stars and space". SpaceTelescope.org. Hubble Picture of the Week. 24 de decembro de 2012. Arquivado dende o orixinal o 13 de maio de 2019. Consultado o 29 de xuño de 2017.