SIMBAD references

1998A&AS..127..367Y - Astron. Astrophys., Suppl. Ser., 127, 367-395 (1998/February-1)

The ``Virgo photometry catalogue''


Abstract (from CDS):

We present a new catalogue of galaxies in the direction of the Virgo Cluster's core: the Virgo Photometry Catalogue (VPC). This catalogue contains 1180 galaxies (including background objects) within a 23 square-degree area of the sky centred on R.A.1950.0=12h26m and Dec.1950.0=13°08'. The VPC galaxy sample comprises of non-stellar objects brighter than BJ25=19.0; the completeness limits being BJ25≃18.5 for the northern half of the survey area and BJ25≃18.0 for the southern half. Independently-calibrated photographic surface photometry is presented for over 1000 galaxies in the U, BJ and RC bands. Parameters listed for catalogued galaxies include: equatorial coordinates, morphological types, surface-brightness profile parameters (which preserve the majority of the original surface photometry information), U, BJ & RC isophotal magnitudes, BJ and [transformed] B total magnitudes, (U-BJ) and (BJ-RC) equal-area and total colours, apparent angular radii, ellipticities, position angles, heliocentric radial velocities and alternative designations. All total magnitudes and total colours are extrapolated according to a new system denoted t in order to distinguish it from the T system already in use. The VPC is based primarily on four (one U, two BJ and one RC) UK-Schmidt plates, all of which were digitised using the Royal Observatory Edinburgh's (ROE) COSMOS measuring machine. All magnitudes, colours and surface-brightness parameters are derived from numerical integrations of segmented plate-scan data, except for (in 109 cases) saturated or (in 51 cases) inextricably-merged images; our segmentation software being able to cope with the vast majority of image mergers.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: individual: Virgo cluster - catalogues - galaxies: fundamental parameters - galaxies: photometry

VizieR on-line data: <Available at CDS (J/A+AS/127/367): catalog sumcat bj4882 bj9229 br2936 bu9362 + tex and ps editions>

Nomenclature: Catalogue: VPC NNNN (Nos 1-1129). Table 14: VPCX NNA (Nos 1-51) N=51+38

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

CDS comments: p.367: Cluster A and Cluster B are respectively M 87 and M 49 in Binggeli+ 1987

Simbad objects: 237

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