2019ApJ...871..194Y


Query : 2019ApJ...871..194Y

2019ApJ...871..194Y - Astrophys. J., 871, 194-194 (2019/February-1)

On the connection between spiral arm pitch angle and galaxy properties.

YU S.-Y. and HO L.C.

Abstract (from CDS):

We measure the pitch angle (φ) of spiral arms in a sample of 79 galaxies to perform a systematic study of the dependence of φ on galaxy morphology, mass, and kinematics to investigate the physical origin of spiral arms. We find that φ decreases (arms are more tightly wound), albeit with significant scatter, in galaxies with earlier Hubble type, more prominent bulges, higher concentration, and larger total galaxy stellar mass (M*gal). For a given concentration, galaxies with larger stellar masses tend to have tighter spiral arms, and vice versa. We also find that φ obeys a tight inverse correlation with central stellar velocity dispersion for σc >= 100 km s–1, whereas φ remains approximately constant for σc <= 100 km s–1. We demonstrate that the φ-σc and φ-M*gal relations are projections of a more fundamental three-dimensional ϕ–σc–M*gal relation, such that pitch angle is determined by σc for massive galaxies but by M*gal for less massive galaxies. Contrary to previous studies, we find that φ correlates only loosely with the galaxy's shear rate. For a given shear rate, spirals generated from N-body simulations exhibit much higher φ than observed, suggesting that galactic disks are dynamically cooler (Toomre's Q ≃ 1.2). Instead, the measured pitch angles show a much stronger relation with morphology of the rotation curve of the central region, such that galaxies with centrally peaked rotation curves have tight arms, while those with slow-rising rotation curves have looser arms. These behaviors are qualitatively consistent with predictions of density wave theory.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

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

Simbad objects: 83

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Number of rows : 83
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 UGC 5 AGN 00 03 05.6532278352 -01 54 49.909114908   13.92 13.32 12.40 12.08 ~ 99 0
2 NGC 7819 GiG 00 04 24.495 +31 28 19.30   14.3       ~ 117 0
3 NGC 7824 GiP 00 05 06.2405943024 +06 55 12.496933380   14.5       ~ 57 0
4 NGC 1 GiP 00 07 15.8562637560 +27 42 29.020113144   13.4       ~ 107 0
5 NGC 23 G 00 09 53.411 +25 55 25.46   12.5       ~ 304 3
6 NGC 160 G 00 36 04.0982272704 +23 57 28.502827092   13.7       ~ 87 0
7 NGC 175 G 00 37 21.5488991448 -19 56 03.358974336   12.95   11.73 12.4 ~ 94 0
8 NGC 214 AGN 00 41 28.0237030104 +25 29 57.833719800   13.0       ~ 164 0
9 NGC 237 AGN 00 43 27.8628000144 -00 07 29.805209400   13.65 13.06 12.53 11.85 ~ 142 0
10 NGC 257 GiG 00 48 01.5091790304 +08 17 49.505819100   13.7       ~ 81 0
11 IC 1588 G 00 50 57.7181813736 -23 33 28.505172132   16.37   15.05   ~ 9 0
12 NGC 551 G 01 27 40.6324938696 +37 10 58.791231552   13.5       ~ 81 0
13 UGC 1271 LIN 01 49 00.0589808376 +13 12 39.999609288   14.11       ~ 48 1
14 NGC 768 LIN 01 58 40.9396864704 +00 31 45.224952888   14.3       ~ 76 0
15 NGC 776 GiG 01 59 54.5182947984 +23 38 39.440979708   13.4       ~ 109 0
16 NGC 930 GiG 02 27 54.6995451600 +20 19 57.038404260   13.7       ~ 59 0
17 NVSS J025557+004132 rG 02 55 57.2812303104 +00 41 33.370546416   14.9       ~ 84 0
18 NGC 1167 LIN 03 01 42.3322774176 +35 12 20.300948892   13.84 12.77     ~ 336 2
19 NGC 1349 LIN 03 31 27.5125084008 +04 22 51.205128636   15.00       ~ 68 0
20 NGC 1645 LIN 04 44 06.3961206312 -05 27 56.426721444   14   12.57   ~ 57 0
21 UGC 3253 G 05 19 41.625 +84 03 09.10   13.1       ~ 69 0
22 NGC 2253 G 06 43 14.6846186952 +65 40 38.950679568   15.0       ~ 56 0
23 NGC 2449 LIN 07 47 20.2981917816 +26 55 48.571415436   14.3       ~ 63 0
24 NGC 2486 Sy2 07 57 56.4878763072 +25 09 39.152321928   14.24 13.26     ~ 74 0
25 UGC 4308 AGN 08 17 25.7946713184 +21 41 07.680895332   14.5       ~ 99 0
26 NGC 2604 GiP 08 33 23.057 +29 32 19.03   15.38 14.92     ~ 104 0
27 NGC 2730 rG 09 02 15.839 +16 50 17.51   13.7       ~ 72 0
28 NGC 2906 GiG 09 32 06.2228278920 +08 26 30.486567516   13.1       ~ 155 0
29 NGC 2916 Sy2 09 34 57.5933209584 +21 42 18.960584796 12.81 12.74 12.05     ~ 141 1
30 NGC 3106 LIN 10 04 05.2518653088 +31 11 07.659854232   14.0       ~ 94 0
31 NGC 3057 LSB 10 05 39.306 +80 17 08.40   14.2       ~ 85 0
32 NGC 3381 GiG 10 48 24.7990862064 +34 42 41.068596852   12.8       ~ 154 0
33 NGC 3815 GiG 11 41 39.309 +24 48 01.90   14.2       ~ 82 0
34 NGC 3938 GiG 11 52 49.4335936248 +44 07 14.697085116 10.80 10.90 10.38     ~ 514 1
35 NGC 3994 LIN 11 57 36.8662975416 +32 16 39.447161112   13.51 12.87     ~ 184 1
36 NGC 4003 LIN 11 57 59.0256271248 +23 07 29.592588396   14.8       ~ 74 0
37 UGC 7012 rG 12 02 03.164 +29 50 53.11   14.3       ~ 95 0
38 NGC 4047 G 12 02 50.6855747352 +48 38 10.300035480   12.8       ~ 90 0
39 UGC 7145 GiG 12 09 50.944 +38 13 06.74   15.4       ~ 43 0
40 NGC 4185 LIN 12 13 22.1960178360 +28 30 39.646606428   13.5       ~ 100 0
41 NGC 4210 LIN 12 15 15.8513778552 +65 59 07.052376192   13.4       ~ 124 0
42 NGC 4644 GiP 12 42 42.6501505728 +55 08 43.928947644   14.8       ~ 67 0
43 NGC 4711 GiC 12 48 45.8623156056 +35 19 57.881064972   14.4       ~ 67 0
44 NGC 4961 EmG 13 05 47.5766802528 +27 44 03.247625004   13.5       ~ 169 0
45 NGC 5000 SBG 13 09 47.454 +28 54 25.07   14.0 13.41     ~ 163 1
46 NGC 5056 G 13 16 12.3107192976 +30 57 01.644570360   13.6       ~ 136 0
47 ESO 576-51 EmG 13 25 08.9797081800 -19 46 05.409139548   13.67   12.58   ~ 40 0
48 UGC 8781 LIN 13 52 22.7399528952 +21 32 21.657094296   14.5       ~ 54 0
49 NGC 5614 IG 14 24 07.5872943864 +34 51 31.813653924   12.6       ~ 137 0
50 NGC 5633 EmG 14 27 28.3616823288 +46 08 47.521403916   13.176 12.932 12.449 11.575 ~ 173 0
51 NGC 5657 rG 14 30 43.641 +29 10 50.31   14.4       ~ 92 0
52 NGC 5720 LIN 14 38 33.2828437080 +50 48 54.897094260   14.7       ~ 67 0
53 NGC 5732 G 14 40 38.9756466216 +38 38 16.358563788   14.4       ~ 69 0
54 UGC 9476 rG 14 41 32.0219639160 +44 30 45.962947872   13.59       ~ 93 0
55 NGC 5876 LIN 15 09 31.5746010120 +54 30 23.371242012   13.9       ~ 68 0
56 NGC 5888 LIN 15 13 07.3724076672 +41 15 52.641896508   14.3       ~ 78 0
57 IC 4566 LIN 15 36 42.1586294592 +43 32 21.525766872   14.3       ~ 82 0
58 NGC 5980 GiG 15 41 30.4164434016 +15 47 15.745031088   13.3       ~ 93 0
59 IC 1151 G 15 58 32.3414987472 +17 26 29.272859340   13.4       ~ 127 0
60 NGC 6060 GiG 16 05 51.9982696320 +21 29 05.766126036   14.3       ~ 95 0
61 NGC 6063 G 16 07 13.0021003512 +07 58 44.434838856   14.1       ~ 143 0
62 NGC 6186 GiG 16 34 25.485 +21 32 27.01   14.2       ~ 89 0
63 NGC 6301 GiG 17 08 32.7448601544 +42 20 20.859983448   14.6       ~ 62 0
64 UGC 10796 Sy1 17 16 47.723 +61 55 12.42   14.50       ~ 54 1
65 IC 1256 G 17 23 47.2869698760 +26 29 11.470994700   14.297 13.551 13.022 12.434 ~ 90 0
66 NGC 6478 GiG 17 48 38.3418843264 +51 09 26.204414436   14.1       ~ 71 0
67 NGC 6497 G 17 51 17.9729051760 +59 28 15.130952292   14.3       ~ 56 0
68 MCG-02-51-004 GiG 20 15 39.8647765272 -13 37 19.147882800   14   13.23   ~ 47 0
69 NGC 6941 rG 20 36 23.4741258768 -04 37 07.445724024   13.3   13.3 12.9 ~ 75 3
70 NGC 7047 LIN 21 16 27.6502399440 -00 49 35.423197932   14.3       ~ 67 0
71 NGC 7311 LIN 22 34 06.7905936096 +05 34 13.172695392   13.4       ~ 104 0
72 NGC 7321 LIN 22 36 28.0158181824 +21 37 18.374440296   15.4       ~ 93 0
73 NGC 7364 rG 22 44 24.3715638768 -00 09 43.659115272   13.8       ~ 93 0
74 UGC 12185 LIN 22 47 25.063 +31 22 24.77   14.8       ~ 62 0
75 NGC 7466 AGN 23 02 03.4724376888 +27 03 09.223962084   15.27 14.42     ~ 91 0
76 NGC 7489 G 23 07 32.6813971224 +22 59 52.998974304   14.3       ~ 82 0
77 NGC 7591 SyG 23 18 16.2727927344 +06 35 09.108933504   13.8       ~ 256 0
78 IC 5309 GiG 23 19 11.638 +08 06 33.58   15.0       ~ 115 0
79 NGC 7631 GiG 23 21 26.6685629592 +08 13 03.560510496   13.8       ~ 144 0
80 NGC 7653 LIN 23 24 49.3605599784 +15 16 32.129440788   12.06 11.91     ~ 92 1
81 NGC 7716 G 23 36 31.4564531712 +00 17 50.183061252   12.9   13.0 12.6 ~ 160 0
82 NGC 7738 LIN 23 44 02.0233516093 +00 30 59.758852365   14.4       ~ 90 0
83 NGC 7767 GiG 23 50 56.3651049576 +27 05 13.664142780   14.2       ~ 31 0

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2023.06.01-20:40:12

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