MULTIWAVELENGTH OBSERVATIONS OF A SEYFERT-1 GALAXY DETECTED IN ACO-3627

ACO 3627 is a rich, nearby cluster of galaxies at the core of the Grea t Attractor. At the low galactic latitude of b = -7.2 degrees the gala ctic extinction is significant. Nevertheless, its proximity makes it a prime target for studies of environmental effects on its cluster memb ers. Here, we report on a multiwavelength study of a Seyfert 1 galaxy at 30 arcmin from the centre of ACO 3627. Its Seyfert nature was disco vered spectroscopically and confirmed in X-rays. We have obtained B-J and R-C CCD photometry as well as J, H, K and L aperture photometry at the SAAO, low and high resolution spectroscopy (ESO and SAAO), 21 cm line observations (Parkes Observatory) and X-ray ROSAT PSPC data. The Seyfert 1 galaxy is of morphology SBa(r). It has a nearby companion (d SO) but shows no signs of interaction. A consistent value for the gala ctic extinction of A(B) = 1.6 mag could be determined. The nucleus of the Seyfert is very blue with a strong (B-J - R-C) colour gradient in the inner 2.5 arcsec. The extinction-corrected near-infrared colours o f WKK 6092 are typical of a Seyfert 1 and the X-ray spectrum conforms to the expectation of a Seyfert as well. The galaxy has a very low HI flux. This could be explained by its morphology, but also - due to its very central position within the rich Norma cluster - to ram pressure stripping.