Rotation of the large lenticular galaxy NGC 612

Details Rotation of the large lenticular galaxy NGC 612 Rotation of the large lenticular galaxy NGC 612

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.190p..23g&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 190, Feb. 1980, p. 23P-26P.

Astronomy and Astrophysics

Astronomy

17

Astronomical Spectroscopy, Disk Galaxies, Galactic Rotation, Radio Galaxies, Cosmic Dust, Emission Spectra, Galactic Structure, H Alpha Line, Oxygen Spectra

Scientific paper

The radio galaxy NGC 612 (= PKS 0131-36) has been studied spectroscopically and the velocity field measured in emission lines of [O II], [O III] and Hα. A rotation curve has been determined to a radius of 40 kpc (H = 50 km s-1 Mpc-1). The rotation curve of this SO galaxy is essentially flat, as is found for many late-type systems, with an amplitude of 340 km s-1. The dust lane is orthogonal to the derived rotation axis which in turn is aligned with the radio source. The upper limit to the mass is 1.1 × 1012 Msun (based on a spherical model) and is comparable to that of NGC 1961 (Rubin, Ford & Roberts 1979). The upper limit to the mass to blue light ratio is 5.4 ± 1.8 (solar units).

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