2019A&A...623A...1I


Query : 2019A&A...623A...1I

2019A&A...623A...1I - Astronomy and Astrophysics, volume 623A, 1-1 (2019/3-1)

The Fornax Deep Survey with the VST. V. Exploring the faintest regions of the bright early-type galaxies inside the virial radius.

IODICE E., SPAVONE M., CAPACCIOLI M., PELETIER R.F., VAN DE VEN G., NAPOLITANO N.R., HILKER M., MIESKE S., SMITH R., PASQUALI A., LIMATOLA L., GRADO A., VENHOLA A., CANTIELLO M., PAOLILLO M., FALCON-BARROSO J., D'ABRUSCO R. and SCHIPANI P.

Abstract (from CDS):


Context. This paper is based on the multi-band (ugri) Fornax Deep Survey (FDS) with the VLT Survey Telescope (VST). We study bright early-type galaxies (mB≤15mag) in the 9 square degrees around the core of the Fornax cluster, which covers the virial radius (Rvir∼0.7Mpc).
Aims. The main goal of the present work is to provide an analysis of the light distribution for all galaxies out to unprecedented limits (in radius and surface brightness) and to release the main products resulting from this analysis in all FDS bands. We give an initial comprehensive view of the galaxy structure and evolution as a function of the cluster environment.
Methods. From the isophote fit, we derived the azimuthally averaged surface brightness profiles, the position angle, and ellipticity profiles as a function of the semi-major axis. In each band, we derived the total magnitudes, effective radii, integrated colours, and stellar mass-to-light ratios.
Results. The long integration times, the arcsec-level angular resolution of OmegaCam at VST, and the large covered area of FDS allow us to map the light and colour distributions out to large galactocentric distances (up to about 10-15Re) and surface brightness levels beyond µr=27mag/arcsec2B≥28mag/arcsec2). Therefore, the new FDS data allow us to explore in great detail the morphology and structure of cluster galaxies out to the region of the stellar halo. The analysis presented in this paper allows us to study how the structure of galaxies and the stellar population content vary with the distance from the cluster centre. In addition to the intra-cluster features detected in previous FDS works, we found a new faint filament between FCC 143 and FCC 147, suggesting an ongoing interaction.
Conclusions. The observations suggest that the Fornax cluster is not completely relaxed inside the virial radius. The bulk of the gravitational interactions between galaxies happens in the W-NW core region of the cluster, where most of the bright early-type galaxies are located and where the intra-cluster baryons (diffuse light and globular clusters) are found. We suggest that the W-NW sub-clump of galaxies results from an infalling group onto the cluster, which has modified the structure of the galaxy outskirts (making asymmetric stellar halos) and has produced the intra-cluster baryons (ICL and GCs), concentrated in this region of the cluster.

Abstract Copyright: © ESO 2019

Journal keyword(s): surveys - galaxies: photometry - galaxies: elliptical and lenticular, cD - galaxies: clusters: individual: Fornax

VizieR on-line data: <Available at CDS (J/A+A/623/A1): list.dat fccsb.dat fccepspa.dat>

Simbad objects: 30

goto Full paper

goto View the references in ADS

Number of rows : 30
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 ACO 85 ClG 00 41 37.8 -09 20 33           ~ 824 0
2 NGC 1316 GiP 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1248 1
3 MCG-06-08-024 GiG 03 31 08.256 -36 17 24.40   14.60       ~ 54 1
4 NGC 1373 GiP 03 34 59.208 -35 10 16.25 14.44 14.03 13.26     ~ 109 1
5 NGC 1374 GiP 03 35 16.598 -35 13 34.50 12.46 11.97 11.08 10.59   ~ 264 1
6 NGC 1375 GiG 03 35 16.8019706983 -35 15 56.379169010 13.50 13.02 12.40 11.74   ~ 146 1
7 IC 1963 GiG 03 35 31.029 -34 26 49.55   12.90   11.71   ~ 115 0
8 NGC 1379 GiP 03 36 03.940 -35 26 28.23 12.17 12.04 10.91 10.60   ~ 247 1
9 NGC 1380 GiP 03 36 27.590 -34 58 34.68 11.32 10.94 9.93 9.37   ~ 389 1
10 NGC 1381 GiP 03 36 31.6595958424 -35 17 42.745665386 12.90 12.47 11.50 11.02   ~ 224 1
11 ESO 358-33 GiG 03 36 47.5025610434 -34 44 22.780563798 13.63 13.36 12.41 12.00   ~ 119 1
12 MCG-06-09-008 GiP 03 36 54.315 -35 22 29.04   14.81       ~ 72 2
13 NGC 1387 GiP 03 36 57.0325944947 -35 30 23.691986124 12.18 11.75 10.69 10.16   ~ 231 1
14 NGC 1382 GiP 03 37 08.953 -35 11 42.09 13.19 13.79 12.92 12.31   ~ 104 1
15 NGC 1389 GiP 03 37 11.7424496792 -35 44 45.871664087 12.80 12.39 11.50 10.99   ~ 179 1
16 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1488 1
17 ACO S 373 ClG 03 38 30 -35 27.3           ~ 1638 0
18 NGC 1404 GiP 03 38 51.917 -35 35 39.81 11.53 10.69 10.00 9.03   ~ 688 1
19 NGC 1427 GiG 03 42 19.4447168502 -35 23 33.193682690   11.89   10.44   ~ 257 0
20 NGC 1428 GiG 03 42 22.9 -35 09 12   13.77   12.49   ~ 93 0
21 ESO 358-59 GiG 03 45 03.554 -35 58 21.37   14.08   12.85   ~ 101 0
22 NGC 1460 GiG 03 46 13.751 -36 41 46.71   13.52   12.12   ~ 58 0
23 ACO 851 ClG 09 42 56.6 +46 59 22           ~ 311 0
24 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1678 2
25 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1027 1
26 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6101 0
27 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 1998 2
28 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6497 3
29 M 90 Sy2 12 36 49.816 +13 09 46.33 10.56 10.26 9.54     ~ 823 1
30 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4399 2

To bookmark this query, right click on this link: simbad:objects in 2019A&A...623A...1I and select 'bookmark this link' or equivalent in the popup menu


2021.10.24-07:58:38

© Université de Strasbourg/CNRS

    • Contact