The two superposed galaxies of NGC 3314

Details The two superposed galaxies of NGC 3314 The two superposed galaxies of NGC 3314

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97..104s&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, Feb. 1985, p. 104-109.

Astronomy and Astrophysics

Astronomy

12

Astronomical Spectroscopy, Galactic Rotation, Radial Velocity, Spiral Galaxies, Line Of Sight, Luminosity, Velocity Measurement

Scientific paper

Spectroscopic observations of NGC 3314 are presented. Long-slit spectrograms clearly show two sets of emission lines stemming from the two superposed galaxies. The foreground galaxy, NGC 3314a, is a type SBbc or SBc spiral of absolute magnitude MB ≈ -20 and has a radial velocity cz_sun; = 2835±15 km s-1. The background galaxy, NGC 3314b, is probably an Sb of MB ≈ -20.5 with cz_sun; = 4641±6 km s-1. The availabe evidence suggests that at least NGC 3314a, and probably also NGC 3314b, are members of the Hydra I cluster of galaxies (cz_sun; = 3699 km s-1, σv = 681 km s-1), although the alternative hypothesis that one of them or both are field galaxies cannot presently be ruled out.

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