1998A&AS..132..387K


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.06CEST15:27:53

1998A&AS..132..387K - Astron. Astrophys., Suppl. Ser., 132, 387-399 (1998/November-1)

Results of the digital co-addition of thirteen Schmidt films of the Virgo cluster of galaxies.

KATSIYANNIS A.C., KEMP S.N., BERRY D.S. and MEABURN J.

Abstract (from CDS):

We have digitally co-added APM scans of 13 Kodak TechPan films of the SE region of the Virgo cluster of galaxies. The ≃6.2°x6.2° field of the R-band films combined with the resolution of ≃2arcsec/pixel results in data file sizes of about 222MBytes. The 13 scanned films have been aligned, co-added, corrected for vignetting effects and cleaned of stellar features. To illustrate the astrophysical uses of this technique, we present high contrast images of a sample of Virgo cluster and background galaxies. Several very faint, but very clearly seen features, such as the interaction between IC 3481, IC 3481A and IC 3483 and filaments outside of the common envelope of NGC 4438 & NGC 4435, can be seen for the first time. We present an image of the halo of M 87 showing its great extent, and an image of the central regions of the cluster which shows no real evidence for interactions between the galaxies in this region. We also present high-quality images of the previously-identified ``jet" and shell features around M 89. We also present an image of the whole field which appears to show large variations in brightness of the intra-cluster medium across the region, with the brightest regions in the northern part in the central regions of the cluster, though we caution against this interpretation until we have investigated the large variation in emulsion sensitivity across individual films more thoroughly.

Abstract Copyright:

Journal keyword(s): techniques: image processing - galaxies: structure - galaxies: haloes - galaxies: interactions - galaxies: clusters: individual: Virgo cluster

Simbad objects: 19

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Number of rows : 19

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1668 2
2 NGC 4387 GiG 12 25 41.6768872639 +12 48 37.809497625 13.42 13.01 12.12   10.87 ~ 374 1
3 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1224 2
4 NGC 4402 GiP 12 26 07.65312 +13 06 47.9376   12.55       M0 367 1
5 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1022 1
6 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6027 0
7 NGC 4413 GiP 12 26 32.2322973950 +12 36 38.412408309   13.6 12.25     ~ 214 1
8 NGC 4425 GiG 12 27 13.3358624164 +12 44 05.189370805 13.12 12.73 11.83     ~ 173 1
9 NGC 4435 GiG 12 27 40.503 +13 04 44.48 12.23 11.74 10.80     ~ 416 2
10 NGC 4438 LIN 12 27 45.652 +13 00 30.92 11.37 11.02 10.17     ~ 589 3
11 NGC 4476 GiG 12 29 59.081 +12 20 55.21 13.28 13.01 12.19     ~ 296 1
12 NGC 4478 GiP 12 30 17.439 +12 19 42.88 12.82 12.36 11.45   10.17 ~ 474 1
13 UGCA 283 GiG 12 30 31.985 +12 29 24.85   14.5       ~ 389 0
14 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6398 3
15 UGC 7658 GiG 12 30 57.730 +12 16 13.30   11.2       ~ 213 0
16 IC 3481 LIN 12 32 52.280 +11 24 15.13   14.8       ~ 37 0
17 IC 3481A GiC 12 32 56.7676936424 +11 23 24.389684626   17       ~ 20 0
18 IC 3483 IG 12 33 10.0582552215 +11 20 50.461135899   15.4       ~ 68 0
19 M 89 LIN 12 35 39.8073444 +12 33 22.830809 11.29 10.73 9.75     ~ 941 2

    Equat.    Gal    SGal    Ecl

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