2008A&A...485...21S


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET16:40:16

2008A&A...485...21S - Astronomy and Astrophysics, volume 485, 21-31 (2008/7-1)

Deep surface photometry of edge-on spirals in Abell galaxy clusters. Constraining environmental effects.

SANTIAGO B.X. and VALE T.B.

Abstract (from CDS):

There is a clear scarcity of structural parameters for stellar thick discs, especially for spiral galaxies located in high-density regions, such as galaxy clusters and compact groups. We have modelled the thin and thick discs of 4 edge-on spirals located in Abell clusters: NGC705, ESO243G49, ESO187G19, LCSBS0496P. Deep I band images of NGC705 were taken from the HST archive, whereas the remaining images were obtained with the Southern Telescope for Astrophysical Research (SOAR) in Gunn r filter. They reached surface brightness levels of µI≃26.0mag/arcsec2 and µr≃26.5 mag/arcsec2, respectively. Profiles were extracted from the deep images, in directions both parallel and perpendicular to the major axis. Profile fits were carried out at several positions, yielding horizontal and vertical scale parameters for both thin and thick disc components. The extracted profiles and fitted disc parameters vary from galaxy to galaxy. Two galaxies have a horizontal profile with a strong down-turn at outer radii, preventing a simple exponential from fitting the entire range. For the 2 early-type spirals, the thick discs have larger scalelengths than the thin discs, whereas no trend is seen for the later types. Both the thin and thick discs sampled tend to have similar scalelengths and scaleheights when compared to typical field disc galaxies. However, the thin disc parameters of the 2 farthest galaxies, both late-type spirals, may be significantly affected by seeing effects. Taken at face value, our results suggest that environment plays a minor role in determining the thin and thick disc sizes.

Abstract Copyright:

Journal keyword(s): galaxies: formation - galaxies: evolution - galaxies: photometry - galaxies: structure

Simbad objects: 12

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Number of rows : 12

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 2877 ClG 01 09 49.3 -45 54 02           ~ 138 2
2 IC 1633 BiC 01 09 55.599 -45 55 52.38   12.23       ~ 82 3
3 ESO 243-49 GiG 01 10 27.746 -46 04 27.41 16.54 14.92   13.48   ~ 156 0
4 RSCG 15 CGG 01 52 41.4 +36 08 46           ~ 7 0
5 NGC 705 GiG 01 52 41.66 +36 08 37.7   14.5       ~ 38 0
6 NGC 708 BiC 01 52 46.482 +36 09 06.53 14.85 14.27 13.29 12.67 12.09 ~ 214 3
7 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 659 1
8 ACO 419 ClG 03 08 15.85 -23 41 29.0           ~ 58 0
9 6dFGS gJ030920.3-234459 LSB 03 09 20.260 -23 44 59.03   17.129   15.978   ~ 6 0
10 NGC 4565 LIN 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 888 0
11 ESO 187-19 GiC 20 51 06.540 -52 42 45.18   15.79   14.54   ~ 23 0
12 ACO 3716 ClG 20 51 16.7 -52 41 43           ~ 109 1

    Equat.    Gal    SGal    Ecl

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