2017ApJ...838..105L

Query : 2017ApJ...838..105L

2017ApJ...838..105L - Astrophys. J., 838, 105-105 (2017/April-1)

Bar-induced central star formation as revealed by integral field spectroscopy from CALIFA.

LIN L., LI C., HE Y., XIAO T. and WANG E.

Abstract (from CDS):

We investigate the recent star formation history (SFH) in the inner region of 57 nearly face-on spiral galaxies selected from the Calar Alto Legacy Integral Field Area (CALIFA) survey. For each galaxy, we use the integral field spectroscopy from CALIFA to obtain two-dimensional maps and radial profiles of three parameters that are sensitive indicators of the recent SFH: the 4000 Å break (Dn(4000)), and the equivalent width of Hδ absorption (EW(HδA)) and Hα emission (EW(Hα)). We have also performed photometric decomposition of bulge/bar/disk components based on SDSS optical image. We identify a class of 17 "turnover" galaxies for which the central region presents a significant drop in Dn(4000), and most of them correspondingly show a central upturn in EW(HδA) and EW(Hα). This indicates that the central region of the turnover galaxies has experienced star formation in the past 1-2 Gyr, which makes the bulge younger and more star-forming than surrounding regions. We find that almost all (15/17) of the turnover galaxies are barred, while only half of the barred galaxies in our sample (15/32) are classified as a turnover galaxies. This finding provides strong evidence in support of the theoretical expectation that the bar may drive gas from the disk inward to trigger star formation in the galaxy center, an important channel for the growth/rejuvenation of pseudobulges in disk galaxies.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: evolution - galaxies: formation - galaxies: spiral - galaxies: stellar content - galaxies: structure - galaxies: structure

Simbad objects: 66

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Number of rows : 66
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 UGC 5 Sy2 00 03 05.6532278352 -01 54 49.909114908   13.92 13.32 12.40 12.08 ~ 105 0
2 NGC 7819 GiG 00 04 24.495 +31 28 19.30   14.3       ~ 124 0
3 UGC 36 AG? 00 05 13.8796086216 +06 46 19.204496040   14.7       ~ 65 0
4 NGC 1 GiP 00 07 15.8562637560 +27 42 29.020113144   13.4       ~ 116 0
5 NGC 36 LIN 00 11 22.2984769368 +06 23 21.623562132   14.5       ~ 89 0
6 NGC 175 Sy2 00 37 21.5488991448 -19 56 03.358974336   12.95   11.73 12.4 ~ 101 0
7 NGC 180 GiG 00 37 57.7068082440 +08 38 06.754410816   14.3       ~ 100 0
8 NGC 237 AGN 00 43 27.8628000144 -00 07 29.805209400   13.65 13.06 12.53 11.85 ~ 151 0
9 NGC 477 Sy2 01 21 20.3410541880 +40 29 17.414141208   14.0       ~ 102 0
10 IC 1683 GiG 01 22 38.867 +34 26 13.21   14.2       ~ 89 0
11 NGC 496 GiG 01 23 11.5872831672 +33 31 45.417105984   14.3       ~ 110 0
12 NGC 776 GiG 01 59 54.5182947984 +23 38 39.440979708   13.4       ~ 115 0
13 NGC 1056 Sy2 02 42 48.2914236192 +28 34 26.660028468   13.5       ~ 168 0
14 UGC 3253 AG? 05 19 41.625 +84 03 09.10   13.1       ~ 74 0
15 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17437 0
16 NGC 2253 AG? 06 43 14.6846186952 +65 40 38.950679568   15.0       ~ 61 0
17 NGC 2347 LIN 07 16 04.087 +64 42 41.54   13.2       ~ 123 0
18 NGC 2449 LIN 07 47 20.2981917816 +26 55 48.571415436   14.3       ~ 68 0
19 NGC 2730 rG 09 02 15.839 +16 50 17.51   13.7       ~ 80 0
20 NGC 2906 GiG 09 32 06.2228278920 +08 26 30.486567516   13.1       ~ 168 0
21 NGC 2916 Sy2 09 34 57.5933209584 +21 42 18.960584796 12.81 12.74 12.05     ~ 153 1
22 NVSS J093526+294843 rG 09 35 26.2841238528 +29 48 45.490357944   15.0       ~ 66 0
23 NGC 3106 LIN 10 04 05.2518653088 +31 11 07.659854232   14.0       ~ 100 0
24 NGC 3381 GiG 10 48 24.7990862064 +34 42 41.068596852   12.8       ~ 168 0
25 IC 674 LIN 11 11 06.3568843680 +43 37 58.713641652   14.5       ~ 71 0
26 NGC 3614 GiG 11 18 21.3370383720 +45 44 53.524032396   12.7       ~ 124 0
27 NGC 3811 AG? 11 41 16.6113724536 +47 41 26.982320640   13.0       ~ 171 0
28 UGC 7012 rG 12 02 03.164 +29 50 53.11   14.3       ~ 103 0
29 NGC 4185 LIN 12 13 22.1960178360 +28 30 39.646606428   13.5       ~ 107 0
30 NGC 4210 LIN 12 15 15.8513778552 +65 59 07.052376192   13.4       ~ 135 0
31 NGC 4371 GiG 12 24 55.4333579760 +11 42 15.144247584 12.35 11.79 10.81     ~ 318 1
32 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6645 0
33 NGC 4470 H2G 12 29 37.8066943368 +07 49 27.284422224   12.9       ~ 240 0
34 NGC 5000 SBG 13 09 47.454 +28 54 25.07   14.0 13.41     ~ 172 1
35 NGC 5205 LIN 13 30 03.5953653072 +62 30 41.584939200   13.5       ~ 124 0
36 UGC 8781 LIN 13 52 22.7399528952 +21 32 21.657094296   14.5       ~ 59 0
37 NGC 5378 LIN 13 56 51.0226429536 +37 47 50.075664720   13.8       ~ 106 0
38 NGC 5394 GiP 13 58 33.6405096192 +37 27 12.732147036   13.7 13.12     ~ 202 1
39 NGC 5406 LIN 14 00 20.1233388144 +38 54 55.474400196   13.1       ~ 125 0
40 NGC 5520 GiP 14 12 22.8055823616 +50 20 54.479575320   13.3       ~ 126 0
41 NGC 5614 AG? 14 24 07.5872943864 +34 51 31.813653924   12.6       ~ 146 0
42 NGC 5630 AG? 14 27 36.581 +41 15 28.14   13.6       ~ 111 0
43 NGC 5720 LIN 14 38 33.2828437080 +50 48 54.897094260   14.7       ~ 70 0
44 UGC 9476 rG 14 41 32.0219639160 +44 30 45.962947872   13.59       ~ 103 0
45 NGC 5888 LIN 15 13 07.3724076672 +41 15 52.641896508   14.3       ~ 85 0
46 NGC 5947 AGN 15 30 36.5925666192 +42 43 01.769449836   14.8       ~ 83 0
47 IC 4566 LIN 15 36 42.1586294592 +43 32 21.525766872   14.3       ~ 88 0
48 NGC 6004 GiG 15 50 22.7234510328 +18 56 21.333070932   13.4       ~ 98 0
49 NGC 6063 AG? 16 07 13.0021003512 +07 58 44.434838856   14.1       ~ 152 0
50 NGC 6154 LIN 16 25 30.4846438032 +49 50 24.910783008   13.60       ~ 73 1
51 NGC 6314 LIN 17 12 38.6880420672 +23 16 12.229407012 16.04 15.56 14.62 14.02 13.33 ~ 102 0
52 IC 1256 AG? 17 23 47.2869698760 +26 29 11.470994700   14.297 13.551 13.022 12.434 ~ 94 0
53 NGC 6497 AG? 17 51 17.9729051760 +59 28 15.130952292   14.3       ~ 60 0
54 NGC 6941 rG 20 36 23.4741258768 -04 37 07.445724024   13.3   13.3 12.9 ~ 80 3
55 UGC 11649 LIN 20 55 27.6255622104 -01 13 30.895126896   14.5       ~ 71 0
56 NGC 7321 LIN 22 36 28.0158181824 +21 37 18.374440296   15.4       ~ 101 0
57 UGC 12224 AG? 22 52 38.3367927576 +06 05 37.218158628   15.30       ~ 80 0
58 NGC 7466 AGN 23 02 03.4724376888 +27 03 09.223962084   15.27 14.42     ~ 98 0
59 NGC 7489 AG? 23 07 32.6813971224 +22 59 52.998974304   14.3       ~ 90 0
60 NGC 7549 GiG 23 15 17.285 +19 02 29.92   14.1   12.79   ~ 122 0
61 NGC 7563 LIN 23 15 55.9242198192 +13 11 46.060536984 14.48 13.87 12.81     ~ 77 1
62 NGC 7591 SyG 23 18 16.2727927344 +06 35 09.108933504   13.8       ~ 269 0
63 NGC 7615 GiG 23 19 54.441 +08 23 57.92   15.3       ~ 30 0
64 NGC 7653 LIN 23 24 49.3605599784 +15 16 32.129440788   12.06 11.91     ~ 102 1
65 NGC 7716 AG? 23 36 31.4564531712 +00 17 50.183061252   12.9   13.0 12.6 ~ 168 0
66 UGC 12816 LSB 23 51 50.6809891488 +03 04 57.754612308   15.0       ~ 64 0

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