2010AJ....139.2465G


Query : 2010AJ....139.2465G

2010AJ....139.2465G - Astron. J., 139, 2465-2493 (2010/June-0)

Ring star formation rates in barred and nonbarred galaxies.

GROUCHY R.D., BUTA R.J., SALO H. and LAURIKAINEN E.

Abstract (from CDS):

Nonbarred ringed galaxies are relatively normal galaxies showing bright rings of star formation in spite of lacking a strong bar. This morphology is interesting because it is generally accepted that a typical galactic disk ring forms when material collects near a resonance, set up by the pattern speed of a bar or bar-like perturbation. Our goal in this paper is to examine whether the star formation properties of rings are related to the strength of a bar or, in the absence of a bar, to the non-axisymmetric gravity potential in general. For this purpose, we obtained Hα emission line images and calculated the line fluxes and star formation rates (SFRs) for 16 nonbarred SA galaxies and four weakly barred SAB galaxies with rings. For comparison, we combine our new observations with a re-analysis of previously published data on five SA, seven SAB, and 15 SB galaxies with rings, three of which are duplicates from our sample. With these data, we examine what role a bar may play in the star formation process in rings. Compared to barred ringed galaxies, we find that the inner ring SFRs and Hα+[N II] equivalent widths in nonbarred ringed galaxies show a similar range and trend with absolute blue magnitude, revised Hubble type, and other parameters. On the whole, the star formation properties of inner rings, excluding the distribution of H II regions, are independent of the ring shapes and the bar strength in our small samples. We confirm that the deprojected axis ratios of inner rings correlate with maximum relative gravitational force Qg; however, if we consider all rings, a better correlation is found when a local bar forcing at the radius of the ring, Qr, is used. Individual cases are described and other correlations are discussed. By studying the physical properties of these galaxies, we hope to gain a better understanding of their placement in the scheme of the Hubble sequence and how they formed rings without the driving force of a bar.

Abstract Copyright:

Journal keyword(s): galaxies: kinematics and dynamics - galaxies: photometry - galaxies: spiral - galaxies: structure

Simbad objects: 59

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Number of rows : 59
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 ESO 409-3 AGN 00 01 55.7932306272 -27 37 37.862863500   14.16   12.69   ~ 27 0
2 NGC 53 G 00 14 42.8624175000 -60 19 42.184526124   13.70   12.42   ~ 34 0
3 ESO 111-22 H2G 00 15 16.4273264520 -57 14 40.860262896   15.15   13.63   ~ 21 0
4 ESO 297-27 G 01 45 10.7795726928 -41 52 47.945120124   14.90   13.92   ~ 31 0
5 ESO 152-26 GiG 01 49 27.9269385144 -56 03 12.008179512   14.12   12.75   ~ 26 0
6 ESO 198-13 G 02 29 16.1279081568 -48 29 28.465148832   13.66   12.02   ~ 21 0
7 NGC 1317 GiP 03 22 44.2823209512 -37 06 13.180903956 12.20 11.78 11.02 10.22   ~ 199 1
8 NGC 1326 GiG 03 23 56.3657298384 -36 27 52.322333040 11.69 11.43 10.54 10.02 10.9 ~ 255 1
9 NGC 1350 GiG 03 31 08.119 -33 37 43.10   11.20 10.52 9.77 10.6 ~ 173 0
10 ACO S 373 ClG 03 38 30 -35 27.3           ~ 1717 0
11 NGC 1433 GiG 03 42 01.4847418992 -47 13 18.929092656   10.84 9.99 9.61 10.2 ~ 347 0
12 IC 1993 GiG 03 47 04.8369103704 -33 42 35.877997728   12.50   11.16 11.7 ~ 79 0
13 IC 2006 EmG 03 54 28.4628183240 -35 58 01.673622516   12.39   10.94 11.9 ~ 202 0
14 NGC 1832 G 05 12 03.3433348776 -15 41 16.021694220   12.2   11.07 11.8 ~ 232 1
15 NGC 3081 Sy2 09 59 29.5437024336 -22 49 34.747341960   13.06 13.55 11.67 12.1 ~ 443 0
16 NGC 3147 Sy2 10 16 53.6388580752 +73 24 02.641798224   11.43 10.61     ~ 459 2
17 NGC 4622 GiG 12 42 37.6277048064 -40 44 39.160537476   13.28 12.44 11.84   ~ 79 0
18 M 94 SyG 12 50 53.0737971432 +41 07 12.900884628 9.15 8.96 8.24 7.78   ~ 1322 2
19 ESO 381-47 G 13 01 05.3881739880 -35 36 59.520031884   14.02   12.77 13.1 ~ 41 0
20 ESO 576-57 G 13 26 20.4818762136 -22 37 53.114553408   14.65   13.58   ~ 23 0
21 NGC 5363 GiP 13 56 07.244 +05 15 16.92 12.59 12.12 10.51     ~ 218 0
22 NGC 5364 GiP 13 56 12.004 +05 00 52.06   13.2       ~ 246 0
23 NGC 5530 G 14 18 27.10 -43 23 14.8   11.78 11.00 10.84 11.4 ~ 83 0
24 NAME Hoag's Object G 15 17 14.4068658744 +21 35 07.856255652   15.8 15.1     ~ 47 0
25 CD-38 10980 WD* 16 23 33.8380498896 -39 13 46.161043572 9.916 10.885 11.029 10.936 10.841 DA2 467 0
26 NGC 6300 Sy2 17 16 59.5418094960 -62 49 13.946588832   10.88 13.08 9.44 10.2 ~ 404 0
27 NGC 6326 PN 17 20 46.252 -51 45 15.17   12.83 11.53 16.00 15.16 O(H)5-8((fc)) 144 0
28 IC 4754 GiG 18 44 00.256 -61 59 24.75   14.37   12.93   ~ 26 0
29 ESO 231-1 G 18 49 02.3669704968 -51 15 54.629542656   13.57   12.42 12.9 ~ 19 0
30 NGC 6753 GiG 19 11 23.635 -57 02 58.44   11.84 11.04 10.31 11.0 ~ 153 0
31 NGC 6761 G 19 15 04.819 -50 39 24.67   13.81 13.67 12.43   ~ 20 0
32 NGC 6782 GiG 19 23 57.9062029800 -59 55 20.952769044   12.70 11.84 11.27 11.7 ~ 117 1
33 NGC 6818 PN 19 43 58.022 -14 09 13.44     9.3     ~ 344 1
34 ESO 526-7 G 19 49 35.8680132312 -26 25 56.193401604   14.05   13.03 13.0 ~ 20 0
35 CD-30 17706 WD* 20 10 56.8486912016 -30 13 06.627142663 11.654 12.286 12.242 12.311 12.381 DA3.1 237 0
36 ESO 399-25 G 20 13 27.7135170576 -37 11 19.743370620   13.66 12.57 12.12 12.1 ~ 42 0
37 ESO 234-11 G 20 22 03.0228398424 -47 59 12.902119836   14.59   13.05   ~ 19 0
38 NGC 6902 GiG 20 24 28.0668116304 -43 39 12.416990940 11.73 11.82 10.93 10.59 11.4 ~ 117 1
39 NGC 6935 GiP 20 38 20.1988150992 -52 06 37.891816812   12.77 12.10 11.57   ~ 62 0
40 NGC 6937 GiP 20 38 45.853 -52 08 35.69   13.37 13.81 12.32 12.8 ~ 35 0
41 ESO 286-10 GiG 20 54 21.1112233776 -44 03 45.628555212   13.42   11.88   ~ 21 0
42 NGC 7020 GiG 21 11 20.0452941264 -64 01 31.011326832   12.81 11.48 11.27   ~ 73 0
43 ESO 236-29 G 21 39 25.5978787392 -49 09 36.851728356   15.44   14.49   ~ 10 0
44 NGC 7098 G 21 44 16.1497974000 -75 06 40.864242528   12.33 11.37 10.84 11.5 ~ 80 0
45 NGC 7184 G 22 02 39.8286792432 -20 48 45.720207216   11.98 11.20 10.62   ~ 135 0
46 NGC 7187 GiP 22 02 44.4963458880 -32 48 11.441366748   13.43   12.24   ~ 44 0
47 NGC 7217 LIN 22 07 52.3984675584 +31 21 33.632293572   12.94 11.92     ~ 477 0
48 NGC 7219 GiG 22 13 08.9881914624 -64 50 56.433124104   13.33 13.13 12.18 12.7 ~ 58 0
49 IC 1438 EmG 22 16 29.0893049880 -21 25 50.454727752   12.63   11.57   ~ 82 0
50 NGC 7267 EmG 22 24 21.8134405440 -33 41 38.767557156   12.97   11.81   ~ 43 0
51 NGC 7329 GiG 22 40 24.2270495112 -66 28 44.236013736   12.51 11.31 11.07 11.7 ~ 91 0
52 IC 5240 G 22 41 52.4120629800 -44 46 01.796119356   12.25 11.31 11.06 12.1 ~ 91 0
53 LP 877-23 PM* 22 52 41.0353986762 -20 35 32.994432457   13.02 11.90     ~ 108 0
54 IC 5267 GiP 22 57 13.572 -43 23 46.11   11.18 10.47 9.83 10.4 ~ 136 0
55 NGC 7417 GiG 22 57 49.5074603856 -65 02 18.801817584   13.24   11.73   ~ 26 0
56 NGC 7531 GiG 23 14 48.4576363992 -43 35 59.465701536   11.99 11.26 12.1 11.7 ~ 142 0
57 UGC 12646 Sy2 23 31 39.0458253168 +25 56 43.312716636   14.08 13.26 12.71 11.73 ~ 71 0
58 NGC 7702 G 23 35 28.8830240088 -56 00 44.260443792   12.97 12.22 11.58   ~ 55 0
59 NGC 7742 GiP 23 44 15.7534099368 +10 46 01.533226872   12.5       ~ 208 0

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2022.11.26-11:13:19

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