2021ApJS..253....1X

Query : 2021ApJS..253....1X

2021ApJS..253....1X - Astrophys. J., Suppl. Ser., 253, 1-1 (2021/March-0)

Trigonometric parallaxes of four star-forming regions in the distant inner Galaxy.

XU Y., BIAN S.B., REID M.J., LI J.J., MENTEN K.M., DAME T.M., ZHANG B., BRUNTHALER A., WU Y.W., MOSCADELLI L., WU G. and ZHENG X.W.

Abstract (from CDS):

We have measured trigonometric parallaxes for four H2O masers associated with distant massive young stars in the inner regions of the Galaxy using the Very Long Baseline Array as part of the BeSSeL Survey. G026.50 + 0.28 is located at the near end of the Galactic bar, perhaps at the origin of the Norma spiral arm. G020.77-0.05 is in the Galactic Center region and is likely associated with a far-side extension of the Scutum arm. G019.60-0.23 and G020.08-0.13 are likely associated and lie well past the Galactic Center. These sources appear to be in the Sagittarius spiral arm, but an association with the Perseus arm cannot be ruled out.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Water masers - Trigonometric parallax - Star formation - the Milky Way

CDS comments: J1835-1248 is not in SIMBAD.

Simbad objects: 15

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Number of rows : 15
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 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
2 NAME Nor Arm PoG 16 00 -50.0           ~ 485 0
3 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
4 [IBR2011] J1821-1224 Rad 18 21 23.3175364008 -12 24 13.548039732           ~ 2 0
5 GAL 019.60-00.23 HII 18 27 38.11 -11 56 39.5           ~ 16 0
6 AKARI-IRC-V1 J1828105-112857 SFR 18 28 10.37 -11 28 49.8           ~ 113 1
7 GAL 020.77-00.05 SFR 18 29 11.5819 -10 49 58.566           ~ 2 0
8 PMN J1833-0323 Rad 18 33 23.90553 -03 23 31.4656           ~ 10 1
9 PMN J1835-1115 Rad 18 35 19.57575892 -11 15 59.3120189           ~ 16 1
10 IRAS 18360-0537 HII 18 38 40.3 -05 35 06           ~ 27 0
11 PMN J1846-0651 Rad 18 46 06.30038417 -06 51 27.7473133           ~ 21 1
12 NAME Sgr Arm PoG 19 00 -30.0           ~ 710 1
13 NAME Outer Arm PoG 21 48 +69.4           ~ 370 0
14 NAME Scutum Spiral Arm PoG ~ ~           ~ 393 0
15 NAME Galactic Bar reg ~ ~           ~ 1458 0

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