2018A&A...609A.132C

Query : 2018A&A...609A.132C

2018A&A...609A.132C - Astronomy and Astrophysics, volume 609A132-132 (2018/1-1)

The intrinsic shape of bulges in the CALIFA survey.

COSTANTIN L., MENDEZ-ABREU J., CORSINI E.M., ELICHE-MORAL M.C., TAPIA T., MORELLI L., DALLA BONTA E. and PIZZELLA A.

Abstract (from CDS):

Context. The intrinsic shape of galactic bulges in nearby galaxies provides crucial information to separate bulge types.
Aims. We aim to derive accurate constraints to the intrinsic shape of bulges to provide new clues on their formation mechanisms and set new limitations for future simulations.
Methods. We retrieved the intrinsic shape of a sample of CALIFA bulges using a statistical approach. Taking advantage of GalMer numerical simulations of binary mergers we estimated the reliability of the procedure. Analyzing the i-band mock images of resulting lenticular remnants, we studied the intrinsic shape of their bulges at different galaxy inclinations. Finally, we introduced a new (B/A, C/A) diagram to analyze possible correlations between the intrinsic shape and the properties of bulges.
Results. We tested the method on simulated lenticular remnants, finding that for galaxies with inclinations of 25°≤θ≤65° we can safely derive the intrinsic shape of their bulges. We found that our CALIFA bulges tend to be nearly oblate systems (66%), with a smaller fraction of prolate spheroids (19%), and triaxial ellipsoids (15%). The majority of triaxial bulges are in barred galaxies (75%). Moreover, we found that bulges with low Sersic indices or in galaxies with low bulge-to-total luminosity ratios form a heterogeneous class of objects; additionally, bulges in late-type galaxies or in less massive galaxies have no preference for being oblate, prolate, or triaxial. On the contrary, bulges with high Sersic index, in early-type galaxies, or in more massive galaxies are mostly oblate systems.
Conclusions. We concluded that various evolutionary pathways may coexist in galaxies, with merging events and dissipative collapse being the main mechanisms driving the formation of the most massive oblate bulges and bar evolution reshaping the less massive triaxial bulges.

Abstract Copyright: © ESO, 2018

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

Simbad objects: 87

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Number of rows : 87
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 1 GiP 00 07 15.8562637560 +27 42 29.020113144   13.4       ~ 126 0
2 NGC 160 AG? 00 36 04.0982272704 +23 57 28.502827092   13.7       ~ 102 0
3 NGC 175 Sy2 00 37 21.5488991448 -19 56 03.358974336   12.95   11.73 12.4 ~ 110 0
4 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
5 NGC 237 AGN 00 43 27.8628000144 -00 07 29.805209400   13.65 13.06 12.53 11.85 ~ 161 0
6 NGC 234 EmG 00 43 32.3817530400 +14 20 33.397671804   13.5       ~ 139 0
7 NGC 257 GiG 00 48 01.5091790304 +08 17 49.505819100   13.7       ~ 95 0
8 NGC 309 EmG 00 56 42.6581930088 -09 54 49.952323224   12.7   11.76 12.4 ~ 175 0
9 NGC 364 LIN 01 04 40.8307468896 -00 48 09.890173044   14.6       ~ 73 0
10 NGC 496 GiG 01 23 11.5872831672 +33 31 45.417105984   14.3       ~ 118 0
11 NGC 551 AG? 01 27 40.6324938696 +37 10 58.791231552   13.5       ~ 99 0
12 NGC 677 rG 01 49 14.0467760952 +13 03 19.235854008   14.3       ~ 89 1
13 Z 437-50 LIN 01 54 24.4000679208 +13 32 28.004732340   15.6       ~ 30 0
14 NGC 842 EmG 02 09 50.7902331144 -07 45 44.859522960 14.10 13.61 12.66     ~ 58 1
15 NGC 873 EmG 02 16 32.3649137304 -11 20 54.546707076   13.1 12.71 12.174 13.0 ~ 82 1
16 NGC 1070 AG? 02 43 22.2706436304 +04 58 06.153414060   13.0       ~ 69 1
17 NGC 1094 LIN 02 47 27.8297462352 -00 17 06.476054676   13.5       ~ 92 0
18 NGC 1349 LIN 03 31 27.5125084008 +04 22 51.205128636   15.00       ~ 77 0
19 NGC 1665 GiG 04 48 17.0808821472 -05 25 39.370143432   14   12.17   ~ 61 0
20 NGC 1666 EmG 04 48 32.8484077824 -06 34 12.108236736   13.5       ~ 51 0
21 NGC 1667 Sy2 04 48 37.1804579280 -06 19 11.824427712   13.66 12.86 11.72   ~ 384 2
22 Z 362-5 AG? 05 19 41.625 +84 03 09.10   13.1       ~ 82 0
23 NGC 2476 GiG 07 56 45.1879208088 +39 55 40.352599056   13.4       ~ 63 0
24 NGC 2486 Sy2 07 57 56.4878763072 +25 09 39.152321928   14.24 13.26     ~ 85 0
25 Z 88-14 Sy2 07 59 40.1314683888 +15 23 12.616863324   14.0       ~ 76 0
26 NGC 2526 GiP 08 06 58.6222158888 +08 00 14.127856236   14.6       ~ 49 0
27 NGC 2572 LIN 08 21 24.6274615896 +19 08 51.908361000   14.8       ~ 53 0
28 IC 2341 LIN 08 23 41.4565340784 +21 26 05.557043364   14.9       ~ 61 0
29 NGC 2592 AG? 08 27 08.0516435904 +25 58 13.122058224   13.6       ~ 126 0
30 Z 4-45 G 08 31 32.8877349264 -01 11 52.137979584   15.00       ~ 69 0
31 NGC 2767 GiG 09 10 11.8843397928 +50 24 04.698572400   14.4       ~ 57 0
32 NGC 2880 GiG 09 29 34.5699581472 +62 29 26.020090572   12.6       ~ 166 0
33 NGC 2916 Sy2 09 34 57.5933209584 +21 42 18.960584796 12.81 12.74 12.05     ~ 162 1
34 NGC 3106 LIN 10 04 05.2518653088 +31 11 07.659854232   14.0       ~ 108 0
35 NGC 3158 rG 10 13 50.527 +38 45 53.68   13.4       ~ 129 0
36 Z 313-9 AG? 10 15 00.666 +65 08 23.28   14.4       ~ 57 0
37 NGC 3381 GiG 10 48 24.7990862064 +34 42 41.068596852   12.8       ~ 180 0
38 Z 157-86 GiC 12 02 03.164 +29 50 53.11   14.3       ~ 109 0
39 NGC 4185 LIN 12 13 22.1960178360 +28 30 39.646606428   13.5       ~ 116 0
40 NGC 4210 LIN 12 15 15.8513778552 +65 59 07.052376192   13.4       ~ 148 0
41 IC 776 EmG 12 19 03.119 +08 51 22.15   14.9       ~ 154 0
42 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 871 0
43 NGC 4698 Sy2 12 48 22.9082830584 +08 29 14.667552276   13.24 12.27     ~ 507 0
44 NGC 4711 GiC 12 48 45.8623156056 +35 19 57.881064972   14.4       ~ 83 0
45 NGC 4961 EmG 13 05 47.5766802528 +27 44 03.247625004   13.5       ~ 196 0
46 NGC 5056 AG? 13 16 12.3107192976 +30 57 01.644570360   13.6       ~ 155 0
47 NGC 5077 rG 13 19 31.66962921 -12 39 25.0765176   13.87 12.85 11.30   ~ 312 1
48 Z 271-34 AG? 13 22 32.4895793472 +54 49 05.563203204   15.4       ~ 46 0
49 NGC 5145 SBG 13 25 13.9112423568 +43 16 02.366691636   13.6       ~ 113 0
50 NGC 5157 LIN 13 27 16.8572117376 +32 01 50.529499752   14.408       ~ 69 0
51 NGC 5376 LIN 13 55 16.0377831672 +59 30 23.912235072   12.9       ~ 107 0
52 NGC 5473 GiG 14 04 43.2276404712 +54 53 33.499699368   12.5       ~ 156 0
53 NGC 5481 AG? 14 06 41.2682134344 +50 43 23.823257124   13.5       ~ 136 0
54 Z 103-123 LIN 14 14 13.3919549352 +15 37 20.658531504   14.0       ~ 57 0
55 IC 994 LIN 14 18 22.6259939496 +11 11 42.571075632   14.8       ~ 33 0
56 NGC 5602 GiG 14 22 18.8342662128 +50 30 04.871729088   13.5       ~ 63 0
57 NGC 5720 LIN 14 38 33.2828437080 +50 48 54.897094260   14.7       ~ 77 0
58 NGC 5732 AG? 14 40 38.9756466216 +38 38 16.358563788   14.4       ~ 86 0
59 NGC 5735 LIN 14 42 33.2401484496 +28 43 35.256709848   14.06 13.36     ~ 84 0
60 Z 48-11 LIN 14 44 12.1850750544 +07 56 58.680391020   15.0       ~ 40 0
61 NGC 5772 SyG 14 51 38.8893193080 +40 35 57.036405696   13.90       ~ 110 0
62 Z 76-153 GiP 15 06 32.47468 +09 26 58.4593   15.2       ~ 36 0
63 IC 4534 AG? 15 06 41.7683024808 +23 38 30.859606644   14.7       ~ 35 0
64 NGC 5888 LIN 15 13 07.3724076672 +41 15 52.641896508   14.3       ~ 98 0
65 Z 135-31 AG? 15 14 15.1527030192 +20 28 43.111148592   15.0       ~ 65 0
66 Z 297-12 LSB 15 23 51.735 +58 03 11.23   14.6       ~ 85 0
67 NGC 5947 AGN 15 30 36.5925666192 +42 43 01.769449836   14.8       ~ 92 0
68 NGC 6060 GiG 16 05 51.9982696320 +21 29 05.766126036   14.3       ~ 114 0
69 NGC 6155 EmG 16 26 08.3352615552 +48 22 00.410482092   13.20       ~ 125 1
70 NGC 6278 GiP 17 00 50.3235598776 +23 00 39.735179064   13.8       ~ 173 0
71 NGC 6301 GiG 17 08 32.7448601544 +42 20 20.859983448   14.6       ~ 77 0
72 NGC 6314 LIN 17 12 38.6880420672 +23 16 12.229407012 16.04 15.56 14.62 14.02 13.33 ~ 111 0
73 NGC 6941 G 20 36 23.4741258768 -04 37 07.445724024   13.3   13.3 12.9 ~ 92 3
74 MCG-01-52-012 LIN 20 37 49.9718691504 -06 05 26.871108216   15.5       ~ 33 0
75 NGC 6977 LIN 20 52 29.7023914056 -05 44 45.953608524   14.28   12.73   ~ 71 0
76 Z 374-28 LIN 20 55 27.6255622104 -01 13 30.895126896   14.5       ~ 79 0
77 NGC 7047 Sy2 21 16 27.6502399440 -00 49 35.423197932   14.3       ~ 84 0
78 NGC 7321 LIN 22 36 28.0158181824 +21 37 18.374440296   15.4       ~ 114 0
79 Z 495-25 LIN 22 47 25.063 +31 22 24.77   14.8       ~ 72 0
80 Z 405-12 AG? 22 52 38.3367927576 +06 05 37.218158628   15.30       ~ 89 0
81 Z 430-30 LIN 22 55 35.9191588488 +12 47 25.085780232   14.06       ~ 64 1
82 NGC 7591 SyG 23 18 16.2727927344 +06 35 09.108933504   13.8       ~ 285 1
83 IC 5309 GiG 23 19 11.638 +08 06 33.58   15.0       ~ 132 0
84 NGC 7653 LIN 23 24 49.3605599784 +15 16 32.129440788   12.06 11.91     ~ 118 1
85 NGC 7671 GiP 23 27 19.3401587400 +12 28 02.728494624   14.3       ~ 71 0
86 NGC 7716 AG? 23 36 31.4564531712 +00 17 50.183061252   12.9   13.0 12.6 ~ 180 0
87 NGC 7782 LIN 23 53 53.8783976472 +07 58 14.183435064   13.2       ~ 121 0

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