1996A&AS..115..439E
Re:NGC 4568
NGC 4568 is a Sbc spiral which is in actual physical contact with its
neighbour NGC 4567, they are members of the Virgo cluster. Fabbiano
et al.
(1992) have observed extended X-ray emission covering both galaxies and
NGC 4568 has a recent type Ib/c supernova (van Dyk 1992). Extended radio
emission has been observed by Condon (1987) at 1.49 GHz. Our CO data
show
strong CO emission along the major axis and also along the minor
axis away
from the companion. However, no CO is detected along the minor axis
near the
companion.
Just found out from their motion data they're right next to each other.
Maybe only Fabbiano et al had gone looking in years, while others were
relying on older orthodoxy. "Extended X-ray emission covering both
galaxies," looks nicely definitive.
Enough, JD