Astronomy and Astrophysics, volume 338, 8-14 (1998/10-1)
Multiwavelength observations of a Seyfert 1 galaxy detected in ACO 3627.
WOUDT P.A., KRAAN-KORTEWEG R.C., FAIRALL A.P., BOEHRINGER H., CAYATTE V. and GLASS I.S.
Abstract (from CDS):
ACO 3627 is a rich, nearby cluster of galaxies at the core of the Great Attractor. At the low galactic latitude of b=-7.2° the galactic extinction is significant. Nevertheless, its proximity makes it a prime target for studies of environmental effects on its cluster members. Here, we report on a multi-wavelength study of a Seyfert 1 galaxy at 30arcmin from the centre of ACO 3627. Its Seyfert nature was discovered spectroscopically and confirmed in X-rays. We have obtained BJ and RC 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 (dS0) but shows no signs of interaction. A consistent value for the galactic extinction of AB=1.6mag could be determined. The nucleus of the Seyfert is very blue with a strong (BJ-RC) colour gradient in the inner 2.5arcsec. The extinction-corrected near-infrared colours of 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 H I 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.
dust, extinction - galaxies: clusters: individual: ACO 3627 - galaxies: individual: WKK 6092 - galaxies: Seyfert - galaxies: distances and redshifts - galaxies: photometry
WKK98 NNNN (Nos 6092, 6103) N=2.
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