The central region of NGC 759 harbors a face-on dust disk with tightly wound spiral structure. The disk has a diameter of 11,000 ly (3.4 kpc).[14] The dust disk also contains a smaller circumnuclear molecular gas ring that has star formation inH II regions.[15][16] These features may be the result of amerger of gas-rich disk galaxies[15][16][17] or by theaccretion of gas-rich material. In either scenario, the gas would have lost momentum and fallen to the center of the galaxy to produce the disk and current star formation.[17] However, Vlasyuk et al. suggests that the disk and the smaller circumnuclear molecular gas ring with star formation inside the main disk formed from a tidal encounter between NGC 759 and a large spiral galaxy which was accompanied by a substantial gas accretion.[16]
NGC 759 contains 2.4 billionM☉ ofmolecular gas. Most of the gas is concentrated in a circumnuclear molecular gas ring with a diameter of 4,200 ly (1.3 kpc).[15] The gas may be the result of the same merger event that produced the circumnuclear molecular gas ring and the main disk.[16][15][17]
^Garcia, A. M. (1993-07-01). "General study of group membership. II – Determination of nearby groups".Astronomy and Astrophysics Supplement Series.100:47–90.Bibcode:1993A&AS..100...47G.ISSN0365-0138.
^Fouque, P.; Gourgoulhon, E.; Chamaraux, P.; Paturel, G. (1992-05-01). "Groups of galaxies within 80 Mpc. II – The catalogue of groups and group members".Astronomy and Astrophysics Supplement Series.93:211–233.Bibcode:1992A&AS...93..211F.ISSN0365-0138.
^Righetti, G.; Giovannini, G.; Feretti, L. (1988-04-01). "WSRT observations at 327 MHz of the cluster A262".Astronomy and Astrophysics Supplement Series.73:173–179.Bibcode:1988A&AS...73..173R.ISSN0365-0138.
^abFeretti, L.; Giovannini, G. (1994-01-01). "Structures of small-size radio galaxies in clusters".Astronomy and Astrophysics.281:375–387.Bibcode:1994A&A...281..375F.ISSN0004-6361.
^abcdVlasyuk, V. V.; Sil'chenko, O. K. (2000-02-01). "NGC 759: A giant elliptical with a just-forming decoupled nucleus".Astronomy and Astrophysics.354:28–34.Bibcode:2000A&A...354...28V.ISSN0004-6361.
