CGCG 522-39, MCG 6-5-31, PGC 6962, UGC 1348, B2 0149+35[1]
NGC 708 is surrounded by 4,700 globular clusters.[15]
Dust lane
Discovered in 1979 by Kotanyi et al., NGC 708 has a thin dust lane[16] with an irregular structure.[17][18][19][5] Besides the dust lane, there are also patches of dust that cross the nucleus.[17][18][19] These features are oriented nearly perpendicular to the radio emission of the galaxy.[20][21][13][8][6] The lane appears to be a nearly edge-on dust disk[22] with a length of 16,000ly (5kpc).[23]
The dust lane appears to have formed from a cooling accretion flow of intracluster medium (ICM) onto NGC 708.[23]
The dust lane in NGC 708 as imaged by the Hubble Space Telescope. NGC 705 can be seen at the lower right of the image.
Supermassive black hole
NGC 708 has a supermassive black hole with an estimated mass of (2.9×108 M☉) (108.46) M☉.[24][10]
The supermassive black hole is powering the radio jets and lobes in the galaxy.[10]
Radio morphology
NGC 708 contains two radio jets[23] that are mildly bent[23][25] and extend into ''s'' shaped[8][12] double radio lobes[10][11][13][12] with a total length of 200,000ly (60kpc).[12]
Chandra observations have shown that the lobes have created a cavity in the intracluster medium of Abell 262.[11]
Possible interaction
NGC 708 may be interacting with NGC 705 which lies about 67,000ly (20.6kpc) to the south-west.[21]
Durret, F. (1994-05-01). "Nuclear and extranuclear ionized gas in nine Seyfert 2 galaxies". Astronomy and Astrophysics Supplement Series. 105: 57–66. Bibcode:1994A&AS..105...57D. ISSN0365-0138.
Parma, P.; Morganti, R.; Fanti, R.; Ruiter, De; R, H.; Chiaberge, M.; Celotti, A.; Capetti, A. (2001-12-06). "The HST survey of the B2 sample of radio-galaxies: optical nuclei and the FRI/BL Lac unified scheme". Astronomy & Astrophysics. 383: 104–111. arXiv:astro-ph/0112151. Bibcode:2002A&A...383..104C. doi:10.1051/0004-6361:20011714. S2CID2457431.
Hu, C.; Wang, J.-M. (2005-08-01). "Captures of Red Giant Stars by Black Holes in Elliptical Galaxies: Feedback to the Hot Gas". The Astrophysical Journal. 630 (2): L125–L128. arXiv:astro-ph/0508021. Bibcode:2005ApJ...630L.125W. doi:10.1086/491670. S2CID119078675.
Clarke, T. E.; McNamara, Brian R.; Sarazin, Craig L.; Blanton, Elizabeth L. (2004-05-21). "Chandra Observation of the Central Region of the Cooling Flow Cluster Abell 262: A Radio Source that is a Shadow of its Former Self?". The Astrophysical Journal. 612 (2): 817–824. arXiv:astro-ph/0405425. Bibcode:2004ApJ...612..817B. doi:10.1086/422677. S2CID2628446.
Kassim, N. E.; Douglass, E. M.; Gopal-Krishna; Anderson, L. D.; Sarazin, C. L.; Blanton, E. L.; Clarke, T. E. (2009-03-04). "Tracing Multiple Generations of AGN Feedback in the Core of Abell 262". The Astrophysical Journal. 697 (2): 1481–1492. arXiv:0903.0844. Bibcode:2009ApJ...697.1481C. doi:10.1088/0004-637X/697/2/1481. S2CID14636695.
Reddy, Naveen A.; Yun, Min S. (2004-01-10). "Radio and Far-Infrared Emission as Tracers of Star Formation and AGN in Nearby Cluster Galaxies". The Astrophysical Journal. 600 (2): 695–715. arXiv:astro-ph/0309649. Bibcode:2004ApJ...600..695R. doi:10.1086/379871. ISSN0004-637X. S2CID15068448.
Harris, William E.; Harris, Gretchen L. H.; Alessi, Matthew (2013-07-09). "A Catalog of Globular Cluster Systems: What Determines the Size of a Galaxy's Globular Cluster Population?". The Astrophysical Journal. 772 (2): 82. arXiv:1306.2247. Bibcode:2013ApJ...772...82H. doi:10.1088/0004-637X/772/2/82. ISSN0004-637X. S2CID119113886.
Kotanyi, C. G.; Ekers, R. D. (1979-03-01). "Radio galaxies with dust lanes". Astronomy and Astrophysics. 73: L1–L3. Bibcode:1979A&A....73L...1K. ISSN0004-6361.
Capetti, A.; de Ruiter, H. R.; Fanti, R.; Morganti, R.; Parma, P.; Ulrich, M.-H. (2000-09-05). "The HST snapshot survey of the B2 sample of low luminosity radio-galaxies: a picture gallery". Astronomy and Astrophysics. 362: 871. arXiv:astro-ph/0009056. Bibcode:2000A&A...362..871C.
Taylor, G. B.; Giroletti, M.; Giovannini, G.; Liuzzo, E. (2009-10-01). "The Bologna complete sample of nearby radio sources – II. Phase referenced observations of faint nuclear sources". Astronomy & Astrophysics. 505 (2): 509–520. arXiv:0908.4391. Bibcode:2009A&A...505..509L. doi:10.1051/0004-6361/200912586. ISSN1432-0746. S2CID5288263.
Taylor, G. B.; Capetti, A.; Giroletti, M.; Giovannini, G.; Buttiglione, S.; Liuzzo, E. (2013-02-01). "Compact sources in the Bologna Complete Sample: high-resolution VLA observations and optical data". Astronomy & Astrophysics. 550: A76. arXiv:1209.4204. Bibcode:2013A&A...550A..76L. doi:10.1051/0004-6361/201220012. ISSN1432-0746. S2CID119233588.
Parma, P.; de Ruiter, H. R.; Fanti, C.; Fanti, R. (1986-04-01). "VLA observations of low luminosity radio galaxies. I – Sources with angular size smaller than two arcminutes". Astronomy and Astrophysics Supplement Series. 64: 135–171. Bibcode:1986A&AS...64..135P. ISSN0365-0138.
Colina, L.; Perez-Fournon, I. (January 1990). "Optical observations of galaxies containing radio jets – A catalog of sources with redshift smaller than 0.15". The Astrophysical Journal Supplement Series. 72: 41–59. Bibcode:1990ApJS...72...41C. doi:10.1086/191408. ISSN0067-0049.
McCarthy, P. J.; van Bruegel, W. J. M.; Heckman, T.; Miley, G. K.; Filippenko, A. V. (1985-09-01). "Optical and Radio Observations of the Cooling-Flow Galaxy NGC 708". Bulletin of the American Astronomical Society. 17: 865. Bibcode:1985BAAS...17..865M.
Sofue, Yoshiaki; Wakamatsu, Ken-Ichi (August 1993). "CO in elliptical galaxies and the universal CO-to-dust ratio". Publications of the Astronomical Society of Japan. 45 (4–6264): 529–538. Bibcode:1993PASJ...45..529S.
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