Spatial Orientation of the Spin Vectors of the Disk Galaxies in the Virgo Cluster I. A Catalogue of the Disk Galaxies in the Virgo Cluster

Details Spatial Orientation of the Spin Vectors of the Disk Galaxies in the Virgo Cluster I. A Catalogue of the Disk Galaxies in the Virgo Cluster Spatial Orientation of the Spin Vectors of the Disk Galaxies in the Virgo Cluster I. A Catalogue of the Disk Galaxies in the Virgo Cluster

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ap%26ss.239...71y&link_type=abstract

Astrophysics and Space Science, Volume 239, Issue 1, pp.71-88

Astronomy and Astrophysics

Astrophysics

Scientific paper

Based on four UK Schmidt Telescope (UKST) IIIa-j direct plates which had been digitized by the Automated Plate Measuring System (APM), a detailed identification of the disk galaxies in the Virgo cluster has been carried out. The certain and possible member galaxies are mainly selected from the updated Catalogue of 2096 Galaxies in the Virgo Cluster Area (VCC). The area of this identification covers a ˜ 85 square degree region centered on this cluster. As a result, we compiled a new catalogue of 340 certain and possible member disk galaxies, including 85 lenticulars (SO), 136 spirals (S) and 119 irregulars (Irr), where the APM-measured values of the position angle (P.A.) and diameters of 299 disk galaxies are provided. For at least 149 galaxies, the values of the P.A. and diameters are published for the first time. Comparison between the APM-measured P.A. and diameters of galaxies and those given by the Uppsala General Catalog of Galaxies (UGC) demonstrates the reliability of our data. The statistical properties and completeness of this database are also discussed. Compared with the UGC-given P.A. and diameters which were determined by eyes, our data has no selection effect owing to the instrument measurements. Within our searching region, this might be the largest and relatively complete photometric database published so far for investigating the spatial orientation of the spin vectors of galaxies in the Virgo cluster.

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