2013MNRAS.430.3489L


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.19CEST17:06:11

2013MNRAS.430.3489L - Mon. Not. R. Astron. Soc., 430, 3489-3509 (2013/April-3)

Statistics of the structure components in S0s: implications for bar-induced secular evolution.

LAURIKAINEN E., SALO H., ATHANASSOULA E., BOSMA A., BUTA R. and JANZ J.

Abstract (from CDS):

The fractions and dimension of bars, rings and lenses are studied in the near-infrared (IR) S0 galaxy survey, which is a sample of ∼ 200 early-type disc galaxies, mainly S0s. We find evidence that multiple lenses in some barred S0s are related to bar resonances in a similar manner as the inner and outer rings, for which the outer/inner length ratio is ∼ 2. Inner lenses in the non-barred galaxies normalized to galaxy diameter are clearly smaller than those in the barred systems. Interestingly, these small lenses in the non-barred galaxies have similar sizes as barlenses (lens-like structures embedded in a bar), and therefore might actually be barlenses in former barred galaxies, in which the outer, more elongated bar component has been destroyed. We also find that fully developed inner lenses are on average a factor of 1.3 larger than bars, whereas inner rings have similar sizes as bars. The fraction of inner lenses is found to be constant in all family classes (A, AB, B). Nuclear bars appear most frequently among the weakly barred (AB) galaxies, which are consistent with the theoretical models by Maciejewski & Athanassoula. Similar-sized bars as the nuclear bars were detected in seven `non-barred' S0s. Galaxy luminosity does not uniquely define the sizes of bars or bar-related structures, neither is there any upper limit in galaxy luminosity for bar formation. Although all the family classes cover the same range of galaxy luminosity, the non-barred (A) galaxies are on average 0.6 mag brighter than the strongly barred (B) systems. Overall, our results are consistent with the idea that bars play an important role in the formation of the structure components of galaxies. The fact that multiple lenses are common in S0s, and that at least the inner lenses can have very old stellar populations, implies that the last destructive merger or major gas accretion event, must have taken place at a fairly high redshift.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: statistics - galaxies: structure

Simbad objects: 30

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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 - 2020
#notes
1 NGC 484 GiG 01 19 34.7378798826 -58 31 27.915659601   13.07   11.58   ~ 43 0
2 NGC 524 GiP 01 24 47.707 +09 32 19.65   11.5       ~ 425 1
3 NGC 936 GiP 02 27 37.462 -01 09 22.61   11.1   9.98 10.7 ~ 335 0
4 NGC 1079 GiG 02 43 44.3348134245 -29 00 11.773098961   12.17 11.37 10.86 11.5 ~ 126 0
5 NGC 1367 GiG 03 35 01.351 -24 55 59.19   11.48   9.98 11.1 ~ 170 0
6 NGC 1389 GiP 03 37 11.7424496792 -35 44 45.871664087 12.80 12.39 11.50 10.99   ~ 175 1
7 NGC 1411 GiG 03 38 44.853 -44 06 02.23   12.06   10.76   ~ 100 0
8 NGC 1452 GiG 03 45 22.306 -18 38 01.03   12.98   11.06   ~ 75 0
9 NGC 1543 EmG 04 12 43.1696030790 -57 44 16.338482645   10.67 10.60 9.74 10.7 ~ 127 0
10 NGC 1537 GiG 04 13 40.706 -31 38 43.48   11.54   10.11   ~ 94 0
11 NGC 1553 GiP 04 16 10.4711638537 -55 46 48.107262747 10.76 10.10 9.40 8.74   ~ 356 2
12 NGC 1574 GiG 04 21 58.7447817626 -56 58 28.401160412   11.17 10.48 9.73   ~ 113 0
13 NGC 1709 GiG 04 58 44.002 -00 28 41.90   15.6       ~ 22 0
14 NGC 2787 LIN 09 19 18.6043000282 +69 12 11.642887220   12.92 11.79     ~ 319 0
15 NGC 2902 GiG 09 30 52.892 -14 44 08.98   13.1   12.03 12.4 ~ 64 0
16 NGC 3169 GiP 10 14 15.099 +03 27 58.03   13.46 12.41     ~ 333 1
17 NGC 3412 GiG 10 50 53.313 +13 24 43.71 11.84 11.45 10.54     ~ 220 1
18 NGC 3489 GiG 11 00 18.5473550222 +13 54 04.215155077 11.46 11.12 10.29     ~ 363 1
19 NGC 3998 SyG 11 57 56.1333561013 +55 27 12.925850484   11.64 12.10 10.09   ~ 580 2
20 NGC 4203 LIN 12 15 05.0543630359 +33 11 50.401356393   12.98 11.99     ~ 457 2
21 NGC 4262 GiG 12 19 30.582 +14 52 39.78 13.00 12.49 11.55     ~ 332 1
22 NGC 4612 GiG 12 41 32.758 +07 18 53.21   11.90       ~ 197 1
23 NGC 4694 AGN 12 48 15.091 +10 59 01.05   13.93 13.36     ~ 246 0
24 NGC 5333 GiG 13 54 24.232 -48 30 45.41   12.82   11.23   ~ 44 0
25 NGC 5750 AGN 14 46 11.1267800328 -00 13 22.528386323   16.23 15.58     ~ 103 0
26 NGC 6012 G 15 54 13.9058160507 +14 36 04.281115506   13.209 12.420 11.870 11.195 ~ 117 0
27 NGC 6438 IG 18 22 17.4368742515 -85 24 07.281096296   13.37 11.61 11.84   ~ 58 0
28 NGC 7098 G 21 44 16.077 -75 06 40.83   12.33 11.37 10.84 11.5 ~ 77 0
29 IC 5240 G 22 41 52.368 -44 46 01.66   12.25 11.31 11.06 12.1 ~ 87 0
30 IC 5328 G 23 33 16.458 -45 00 57.46   12.21 11.03 10.82   ~ 87 0

    Equat.    Gal    SGal    Ecl

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2020.10.19-17:06:11

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