2019MNRAS.486.5726D

Query : 2019MNRAS.486.5726D

2019MNRAS.486.5726D - Mon. Not. R. Astron. Soc., 486, 5726-5736 (2019/July-2)

The spiral pattern rotation speed of the Galaxy and the corotation radius with Gaia DR2.

DIAS W.S., MONTEIRO H., LEPINE J.R.D. and BARROS D.A.

Abstract (from CDS):

In this work we revisit the issue of the rotation speed of the spiral arms and the location of the corotation radius of our Galaxy. This research was performed using homogeneous data set of young open clusters (age < 50 Myr) determined from Gaia Data Release 2 (DR2) data. The stellar astrometric membership was determined using proper motions and parallaxes, taking into account the full covariance matrix. The distance, age, reddening, and metallicity of the clusters were determined by our non-subjective multidimensional global optimization tool to fit theoretical isochrones to Gaia DR2 photometric data. The rotation speed of the arms is obtained from the relation between age and angular distance of the birthplace of the clusters to the present-day position of the arms. Using the clusters belonging to the Sagittarius-Carina, Local, and Perseus arms, and adopting the Galactic parameters R0 = 8.3 kpc and V0 = 240 km s–1, we determine a pattern speed of 28.2 ± 2.1 km s–1 kpc–1, with no difference between the arms. This implies that the corotation radius is Rc = 8.51 ± 0.64 kpc, close to the solar Galactic orbit (Rc/R0 = 1.02 ± 0.07).

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): Galaxy: kinematics and dynamics - Galaxy: structure

VizieR on-line data: <Available at CDS (J/MNRAS/486/5726): table2.dat table3.dat table4.dat>

Simbad objects: 88

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Number of rows : 88
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 Cl Alessi 20 OpC 00 10 30.5 +58 45 18           ~ 55 0
2 NGC 146 OpC 00 33 05.4 +63 19 17   9.59 9.1     ~ 69 0
3 Cl King 16 OpC 00 43 44.8 +64 10 13           ~ 32 0
4 Cl Berkeley 4 OpC 00 45 04 +64 22.9           ~ 37 0
5 NGC 366 OpC 01 06 29.9 +62 13 06           ~ 45 0
6 NGC 457 OpC 01 19 32.4 +58 16 40   6.97 6.4     ~ 259 2
7 M 103 OpC 01 33 21.1 +60 39 13   7.72 7.4     ~ 212 0
8 [FSR2007] 0551 OpC 01 39 40.5 +64 53 09           ~ 22 0
9 NGC 659 OpC 01 44 24.2 +60 40 35   8.40 7.9     ~ 96 0
10 DSH J0207.3+6015 OpC 02 07 25.2 +60 15 26           ~ 27 1
11 NGC 884 OpC 02 22 15.7 +57 08 59           ~ 503 0
12 IC 1805 OpC 02 32 52.1 +61 28 36           ~ 542 1
13 [KPR2005] 9 OpC 02 46 26.5 +57 45 06           ~ 29 0
14 Cl Stock 23 OpC 03 16 03.0 +60 19 52           ~ 54 0
15 Cl Czernik 15 OpC 03 23 05.5 +52 13 48           ~ 23 0
16 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
17 DSH J0355.3+5823 OpC 03 55 22.5 +58 23 34           ~ 24 0
18 NGC 1502 OpC 04 07 49.4 +62 19 35   7.47 6.9     ~ 202 1
19 [KPR2005] 19 OpC 05 28 06.0 -01 56 32           ~ 75 0
20 [KPR2005] 21 OpC 05 28 26.6 +03 33 00           ~ 75 0
21 NGC 1980 OpC 05 35 15.5 -05 55 46     2.5     ~ 132 0
22 Cl Collinder 69 OpC 05 35 32.1 +09 44 02     2.8     ~ 369 0
23 [FSR2007] 0850 OpC 05 45 02.2 +24 44 04           ~ 30 0
24 NAME Gal Anticenter reg 05 46 +28.9           ~ 1024 0
25 Cl Collinder 95 OpC 06 31 06.8 +09 54 24           ~ 54 0
26 NGC 2244 OpC 06 32 06.9 +04 54 19           ~ 673 1
27 Cl Collinder 107 OpC 06 36 52.8 +04 53 03   5.54 5.1     ~ 46 0
28 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
29 Cl VDB 92 OpC 07 04 11.3 -11 27 06           ~ 43 1
30 Cl Collinder 132 OpC 07 13 55.4 -30 41 55     3.6     ~ 78 0
31 Cl Collinder 135 OpC 07 17 23.6 -36 57 23           ~ 124 0
32 NGC 2362 OpC 07 18 41.9 -24 57 08           ~ 428 0
33 Cl Collinder 140 OpC 07 23 23.9 -31 58 15           ~ 154 0
34 Cl Ruprecht 18 OpC 07 24 36.3 -26 13 20   9.90 9.4     ~ 57 0
35 NGC 2414 OpC 07 33 10.7 -15 26 56   8.33 7.9     ~ 87 0
36 NGC 2439 OpC 07 40 46.5 -31 41 36   7.31 6.9     ~ 150 0
37 Cl Haffner 13 OpC 07 40 54.3 -30 02 52           ~ 59 0
38 NGC 2451B OpC 07 44 22.6 -37 53 00           ~ 125 0
39 Cl Haffner 15 OpC 07 45 30.8 -32 50 29   10.68 9.4     ~ 39 0
40 NGC 2453 OpC 07 47 35.0 -27 11 45   8.39 8.3     ~ 68 0
41 Cl Ruprecht 44 OpC 07 58 49.6 -28 33 44   7.66 7.2     ~ 65 0
42 NAME Pozzo 1 OpC 08 09 18.7 -47 20 35           ~ 51 0
43 NGC 2547 OpC 08 10 01.5 -49 12 08           ~ 445 0
44 IC 2395 OpC 08 42 09.0 -48 05 14     4.6     ~ 120 1
45 ESO 313-13 OpC 08 44 51.8 -41 17 02   7.01 6.7     ~ 95 0
46 Cl Trumpler 10 OpC 08 47 46.4 -42 31 52           ~ 203 0
47 Cl Alessi 43 OpC 08 50 27.4 -41 44 30           ~ 56 0
48 IC 2581 OpC 10 27 29.3 -57 37 31   4.79 4.3     ~ 143 0
49 NGC 3293 OpC 10 35 50.3 -58 14 04           ~ 327 0
50 Cl VDBH 99 OpC 10 38 23.9 -59 09 28           ~ 91 0
51 Cl Trumpler 15 OpC 10 44 43.6 -59 22 07           ~ 229 0
52 Cl Trumpler 18 OpC 11 11 21.4 -60 38 36           ~ 98 0
53 Cl Ruprecht 94 OpC 11 30 52.1 -63 25 08           ~ 39 0
54 NGC 3766 OpC 11 36 13.5 -61 36 42   5.66 5.3     ~ 222 0
55 Cl Stock 14 OpC 11 43 45.2 -62 31 12   6.33 6.3     ~ 84 0
56 Cl Basel 18 OpC 13 27 52.5 -62 18 32   8.50 8.2     ~ 46 1
57 Cl Collinder 272 OpC 13 30 19.1 -61 18 59   8.25 7.7     ~ 70 0
58 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 581 1
59 [KPR2005] 79 OpC 15 18 58.4 -60 52 41           ~ 43 0
60 [KC2019] Theia 89 As* 15 19 44.89 -60 43 37.5           ~ 5 0
61 NGC 6193 OpC 16 41 14.9 -48 46 47           ~ 169 0
62 Cl Hogg 21 OpC 16 45 35.7 -47 45 01           ~ 26 0
63 NGC 6216 OpC 16 49 21.1 -44 43 23     10.1     ~ 36 0
64 Cl VDBH 200 OpC 16 49 55.6 -44 11 09           ~ 29 0
65 NGC 6231 OpC 16 54 14.4 -41 48 53           ~ 562 0
66 [KPR2005] 88 OpC 17 07 32.9 -35 33 46           ~ 42 0
67 [KC2019] Theia 195 As* 17 13 35.716 -37 19 17.78           ~ 3 0
68 NGC 6322 OpC 17 18 28.3 -42 56 39           ~ 68 0
69 Cl VDBH 231 OpC 17 31 49.0 -31 54 49           ~ 17 0
70 Cl Trumpler 28 OpC 17 36 55.0 -32 28 16           ~ 59 0
71 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
72 Cl Melotte 186 OpC 18 02 20.8 +03 25 52           ~ 89 0
73 Cl Trumpler 33 OpC 18 24 38.0 -19 43 28   8.00 7.8     ~ 55 0
74 NGC 6664 OpC 18 36 32.4 -08 11 23   8.81 7.8     ~ 135 0
75 NAME Sgr Arm PoG 19 00 -30.0           ~ 710 1
76 Cl Roslund 2 OpC 19 45 07.8 +23 57 48           ~ 44 0
77 IC 4996 OpC 20 16 32.7 +37 38 46           ~ 187 0
78 Cl Berkeley 86 OpC 20 20 20.6 +38 42 15           ~ 130 0
79 DSH J2027.7+3604 OpC 20 27 42.6 +36 04 26           ~ 22 0
80 NGC 7128 OpC 21 43 58.0 +53 43 00   10.54 9.7     ~ 82 0
81 [KPR2005] 118 OpC 22 08 52.9 +61 05 04           ~ 38 0
82 NGC 7235 OpC 22 12 20.5 +57 16 13   8.58 7.7     ~ 119 0
83 NAME Pismis-Moreno 1 OpC 22 18 38.4 +63 14 19           ~ 44 0
84 Cl Berkeley 96 OpC 22 29 54.0 +55 24 31           ~ 38 0
85 NGC 7380 OpC 22 47 23.4 +58 06 55           ~ 198 0
86 NGC 7510 OpC 23 11 03.7 +60 34 40   8.77 7.9     ~ 107 1
87 NAME Cl Negueruela 1 OpC 23 47 24.1 +63 13 11           ~ 27 0
88 NAME Local Arm reg ~ ~           ~ 649 0

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