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- NGC_4203 abstract "NGC 4203 is the New General Catalogue identifier for a lenticular galaxy in the northern constellation of Coma Berenices. It was discovered on March 20, 1787 by English astronomer William Herschel, and is situated 5.5° to the northwest of the 4th magnitude star Gamma Comae Berenices and can be viewed with a small telescope. The morphological classification of NGC 4203 is SAB0−, indicating that it has a lenticular form with tightly wound spiral arms and a weak bar structure at the nucleus.This galaxy has a fairly large reservoir of neutral hydrogen containing on the order of a billion solar masses (M☉), but it is only undergoing a low rate of new star formation. Hence, the inner star formation of the galaxy is fairly old; roughly ten billion years on average. The neutral hydrogen is arranged in two ring-like structures, with the outer ring having nine times the mass of the inner. In the central region there is around 7007250000000000000♠2.5×107 M☉ of molecular hydrogen, plus dust structures within 980 ly (300 pc) of the nucleus. The gas in the outer disk may have been accreted from the inter-galactic medium, or captured during a close encounter with a dwarf galaxy.The nucleus of the galaxy contains a low-ionization nuclear emission-line region of type 1.9. This is being generated by a supermassive black hole of an estimated 7007600000000000000♠(6±1)×107 M☉. An influx of gas of around 6998200000000000000♠2×10−2 M☉/yr is sufficient to explain the measured X-ray luminosity. The time-varying emissions from the region are perhaps best explained by an infalling asymptotic giant branch star that is losing mass to the black hole along a contrail.".
- NGC_4203 wikiPageID "49053710".
- NGC_4203 wikiPageLength "10385".
- NGC_4203 wikiPageOutDegree "25".
- NGC_4203 wikiPageRevisionID "699052476".
- NGC_4203 wikiPageWikiLink 2MASX.
- NGC_4203 wikiPageWikiLink Asymptotic_giant_branch.
- NGC_4203 wikiPageWikiLink Barred_spiral_galaxy.
- NGC_4203 wikiPageWikiLink Category:Coma_Berenices_(constellation).
- NGC_4203 wikiPageWikiLink Category:Lenticular_galaxies.
- NGC_4203 wikiPageWikiLink Category:NGC_objects.
- NGC_4203 wikiPageWikiLink Category:UGC_objects.
- NGC_4203 wikiPageWikiLink Coma_Berenices.
- NGC_4203 wikiPageWikiLink Constellation.
- NGC_4203 wikiPageWikiLink Dwarf_galaxy.
- NGC_4203 wikiPageWikiLink Epoch_(astronomy).
- NGC_4203 wikiPageWikiLink Fritz_Zwicky.
- NGC_4203 wikiPageWikiLink Galaxy_morphological_classification.
- NGC_4203 wikiPageWikiLink Gamma_Comae_Berenices.
- NGC_4203 wikiPageWikiLink Lenticular_galaxy.
- NGC_4203 wikiPageWikiLink Low-ionization_nuclear_emission-line_region.
- NGC_4203 wikiPageWikiLink Lyon-Meudon_Extragalactic_Database.
- NGC_4203 wikiPageWikiLink New_General_Catalogue.
- NGC_4203 wikiPageWikiLink Solar_mass.
- NGC_4203 wikiPageWikiLink Spiral_galaxy.
- NGC_4203 wikiPageWikiLink Supermassive_black_hole.
- NGC_4203 wikiPageWikiLink UZC.
- NGC_4203 wikiPageWikiLink Uppsala_General_Catalogue.
- NGC_4203 wikiPageWikiLink William_Herschel.
- NGC_4203 wikiPageWikiLinkText "NGC 4203".
- NGC_4203 appmagB "12.98".
- NGC_4203 appmagV "11.99".
- NGC_4203 constellationName Coma_Berenices.
- NGC_4203 epoch Epoch_(astronomy).
- NGC_4203 galV "1093.0".
- NGC_4203 hRadialV "1083.0".
- NGC_4203 name "NGC 4203".
- NGC_4203 names "2".
- NGC_4203 sizeV "2.467".
- NGC_4203 type "SAB0−".
- NGC_4203 wikiPageUsesTemplate Template:Convert.
- NGC_4203 wikiPageUsesTemplate Template:DEC.
- NGC_4203 wikiPageUsesTemplate Template:Infobox_galaxy.
- NGC_4203 wikiPageUsesTemplate Template:Ngc45.
- NGC_4203 wikiPageUsesTemplate Template:RA.
- NGC_4203 wikiPageUsesTemplate Template:Reflist.
- NGC_4203 wikiPageUsesTemplate Template:Val.
- NGC_4203 z "0.00362".
- NGC_4203 subject Category:Coma_Berenices_(constellation).
- NGC_4203 subject Category:Lenticular_galaxies.
- NGC_4203 subject Category:NGC_objects.
- NGC_4203 subject Category:UGC_objects.
- NGC_4203 hypernym Identifier.
- NGC_4203 type CelestialBody.
- NGC_4203 type Galaxy.
- NGC_4203 type Place.
- NGC_4203 type Location.
- NGC_4203 type Place.
- NGC_4203 type Thing.
- NGC_4203 type Q318.
- NGC_4203 comment "NGC 4203 is the New General Catalogue identifier for a lenticular galaxy in the northern constellation of Coma Berenices. It was discovered on March 20, 1787 by English astronomer William Herschel, and is situated 5.5° to the northwest of the 4th magnitude star Gamma Comae Berenices and can be viewed with a small telescope.".
- NGC_4203 label "NGC 4203".
- NGC_4203 sameAs Q1109807.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs NGC_4203.
- NGC_4203 sameAs Q1109807.
- NGC_4203 wasDerivedFrom NGC_4203?oldid=699052476.
- NGC_4203 isPrimaryTopicOf NGC_4203.
- NGC_4203 name "2MASXJ12150502+3311500,LEDA39158,UGC7256,UZCJ121505.0+331152,Z187-29 .".
- NGC_4203 name "NGC 4203".