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Structures in the Great Attractor region
To further our understanding of the Great Attractor (GA), we haveundertaken a redshift survey using the 2-degree Field (2dF) instrumenton the Anglo-Australian Telescope (AAT). Clusters and filaments in theGA region were targeted with 25 separate pointings resulting inapproximately 2600 new redshifts. Targets included poorly studied X-rayclusters from the Clusters in the Zone of Avoidance (CIZA) Catalogue aswell as the Cen-Crux and PKS 1343-601 clusters, both of which lie closeto the classic GA centre. For nine clusters in the region, we reportvelocity distributions as well as virial and projected mass estimates.The virial mass of CIZA J1324.7-5736, now identified as a separatestructure from the Cen-Crux cluster, is found to be ~3 ×1014Msolar, in good agreement with the X-rayinferred mass. In the PKS 1343-601 field, five redshifts are measured ofwhich four are new. An analysis of redshifts from this survey, incombination with those from the literature, reveals the dominantstructure in the GA region to be a large filament, which appears toextend from Abell S0639 (l = 281°, b = +11°) to (l ~ 5°, b ~-50°), encompassing the Cen-Crux, CIZA J1324.7-5736, Norma and PavoII clusters. Behind the Norma cluster at cz ~ 15000kms-1, themasses of four rich clusters are calculated. These clusters (TriangulumAustralis, Ara, CIZA J1514.6-4558 and CIZA J1410.4-4246) may contributeto a continued large-scale flow beyond the GA. The results of theseobservations will be incorporated into a subsequent analysis of the GAflow.
| Serendipitous detection of galaxies behind the Milky Way from the DENIS survey
A search has been undertaken at Lyon Observatory to identify, by eye,galaxy candidates at galactic latitudes lower than +/-15 degrees on theDENIS J and K-band images. This paper presents a list of 2028 objectsthat were serendipitously detected throughout the DENIS survey.Cross-identification with galaxy entries in the LEDA Database has beenperformed. Comparison with the second release of the 2MASS survey led toa satisfactory agreement of J band magnitudes (std. dev. = 0.3 mag). Thedistribution of galaxy candidates along the Galactic Plane shows aconcentration near the galactic longitude l=305 deg . As a by product ofthis inspection of J and K images some interesting galactic objects werefound (star clusters and nebulae). Based on observations collected atthe European Southern Observatory, La Silla, Chile. The catalog (Table1) is only available in electronic form at the CDS via anonymous ftp tocdsarc.u-strasbg.fr (130.79.188.5) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/387/1
| Unveiling a connection between large-scale structures behind the southern Milky Way
A redshift survey of galaxies located in the direction of the southernMilky Way has been carried out using the FLAIR multi-objects system onthe 1.2-m UK Schmidt Telescope (UKST) at the Anglo-AustralianObservatory in Australia. The galaxy sample was extracted from the LEDAand COSMOS data bases, but essentially by scanning by eye four plates ofthe UKST/SERC Survey in the region between the Centaurus complex and thePavo-Indus (PI) wall. The galaxies selected have high central surfacebrightnesses and are distributed evenly over the whole search area. Themajority of the galaxies have apparent magnitudes in the range11.5
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