2009ApJ...693..413X


Query : 2009ApJ...693..413X

2009ApJ...693..413X - Astrophys. J., 693, 413-418 (2009/March-1)

Trigonometric parallaxes of massive star-forming regions: III. G59.7+0.1 and W 51 IRS2.

XU Y., REID M.J., MENTEN K.M., BRUNTHALER A., ZHENG X.W. and MOSCADELLI L.

Abstract (from CDS):

We report trigonometric parallaxes for G59.7+0.1 and W 51 IRS2, corresponding to distances of 2.16+0.10–0.09 kpc and 5.1+2.9–1.4kpc, respectively. The distance to G59.7+0.1 is smaller than its near kinematic distance and places it between the Carina-Sagittarius and Perseus spiral arms, probably in the Local (Orion) spur. The distance to W 51 IRS2, while subject to significant uncertainty, is close to its kinematic distance and places it near the tangent point of the Carina-Sagittarius arm. It also agrees well with a recent estimate based on O-type star spectro/photometry. Combining the distances and proper motions with observed radial velocities gives the full space motions of the star-forming regions. We find modest deviations of 5-10 km/s from circular Galactic orbits for these sources, both counter to Galactic rotation and toward the Galactic center.

Abstract Copyright:

Journal keyword(s): astrometry - Galaxy: structure - stars: individual (G59.7 + 0.1, W 51 IRS2) - techniques: interferometric

CDS comments: Sources J1922+1504, J1924+1504 and J1943+2330 are not in Simbad.

Simbad objects: 19

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Number of rows : 19
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 Ass Per OB 1 As* 02 21 +57.6           ~ 163 1
2 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 968 2
3 NAME Per Arm PoG 03 30 +45.0           ~ 1331 0
4 NAME NGP reg 12 51 26.275 +27 07 41.70           ~ 1069 0
5 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 450 1
6 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12380 0
7 7C 175844.60+384828.00 QSO 18 00 24.76536125 +38 48 30.6975330   17.8 17.8 17.04   ~ 136 1
8 GB6 B1920+1524 Rad 19 22 34.6993758 +15 30 10.032861           ~ 47 0
9 [OMN2000] Region 3 PoC 19 23 29.3 +14 31 38           ~ 155 0
10 NAME W 51 North Rad 19 23 40.0 +14 30 51           ~ 147 0
11 [WBN74] W 51 IRS 2 SFR 19 23 40.05 +14 31 07.1           ~ 258 0
12 W 51 SNR 19 23 50 +14 06.0           ~ 1192 1
13 ICRF J192439.4+154043 Bz? 19 24 39.45588 +15 40 43.9420           ~ 33 1
14 [GPD88] 059.116+0.018 Rad 19 41 55.1 +23 07 56           ~ 2 0
15 NGC 6823 OpC 19 43 09 +23 18.0   7.71 7.1     ~ 254 2
16 MSX6C G059.7831+00.0648 Y*O 19 43 11.21664 +23 44 03.9696           ~ 130 0
17 IRAS 19410+2336 SFR 19 43 11.5 +23 44 06           ~ 145 0
18 NVSS J194606+230004 Rad 19 46 06.25141 +23 00 04.4142           ~ 31 1
19 NAME Local Arm reg ~ ~           ~ 413 0

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2021.09.19-19:40:10

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