is a peculiar edge-on galaxy which belongs to the Leo
Triplet, a nearby complex of three interacting spirals.
HI observations by Rots (1978) and Haynes, Giovanelli & Roberts
(1979) reveal emission in all three galaxies as well as a plume and bridge
between NGC 3627 and NGC 3628. CO observations of the group have been
published by Young, Tacconi & Scoville (1983). Neutral hydrogen absorption
in NGC 3628 was first reported by Dickey (1982); he quotes a line width of
93 kms-1 (although there is a hint of faint absorption over a much
larger velocity range) centred at 882 kms-1, close to the systemic
velocity of the galaxy. VLA observations against the extended continuum of
NGC 3628 by Schmelz, Baan & Haschick (1987) reveal about 10 individual
HI absorption features over a velocity range of 350 kms-1.
The velocity gradient of several strong components has been interpreted as a
circular, solidly rotating disk. A very detailed study of both the HI
emission and absorption in NGC 3628 has been carried out by Wilding, Alexander
& Green (1993). Zhang, Wright & Alexander (1993) obtained high-resolution
HI and CO measurements of NGC 3627. We obtained ATCA 20-cm radio
continuum and HI snap-shot observations, but the angular resolution
is rather low.
350 kms-1.
The velocity gradient of several strong components has been interpreted as a
circular, solidly rotating disk. A very detailed study of both the HI
emission and absorption in NGC 3628 has been carried out by Wilding, Alexander
& Green (1993). Zhang, Wright & Alexander (1993) obtained high-resolution
HI and CO measurements of NGC 3627. We obtained ATCA 20-cm radio
continuum and HI snap-shot observations, but the angular resolution
is rather low.