2003A&A...403.1011K

Query : 2003A&A...403.1011K

2003A&A...403.1011K - Astronomy and Astrophysics, volume 4031011-1021 (2003/6-1)

18-cm VLA observations of OH towards the Galactic Centre. Absorption and emission in the four ground-state OH lines.

KARLSSON R., SJOUWERMAN L.O., SANDQVIST A. and WHITEOAK J.B.

Abstract (from CDS):

The OH distribution in the Sgr A Complex has been observed in the 1612-, 1665-, 1667- and 1720-MHz OH transitions with the Very Large Array (VLA) in BnA configuration. Maps are presented with a channel velocity resolution of about 9 kms–1 and with angular resolutions of 4''x3''. Some clear results are highlighted here, such as absorption from the Circumnuclear Disk (CND) and the OH-Streamer inside the CND near Sgr A*, strong absorption towards most of the eastern and western parts of the Sgr A East shell, lack of absorption towards both Sgr A West and the compact Hii-regions to the east of Sgr A East, and double-lobed structure of the High Negative Velocity Gas (HNVG) oriented northeast and southwest of Sgr A*, and finally compact, point-like maser emission in all four transitions, in particular a 1720-MHz maser at -132km/s in the CND as counterpart to a 1720-MHz maser at +132km/s in the CND.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: center - ISM: individual objects: Sgr A - ISM: molecules - ISM: clouds - masers - surveys

Nomenclature: Table 2: [KSS2003] OH LLL.lll+B.bbb N=37.

Simbad objects: 48

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Number of rows : 48
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 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
2 NAME Sgr A Region reg 17 45 12 -28 48.3           ~ 955 0
3 OH 359.825-00.024 OH* 17 45 17.82792 -29 05 53.3400           O-rich 22 0
4 OH 359.924+00.034 OH* 17 45 18.93840 -28 58 57.5436           O-rich 12 0
5 GCM -0.13 -0.08 MoC 17 45 25.2 -29 05 30           ~ 141 1
6 OH 359.990+00.030 OH* 17 45 28.79448 -28 55 43.5900           O-rich 10 0
7 OH 359.906-00.036 OH* 17 45 32.43912 -29 02 04.8264           O-rich 8 0
8 OH 359.888-00.051 OH* 17 45 33.22896 -29 03 29.1924           O-rich 9 0
9 OH 359.906-00.041 OH* 17 45 33.46368 -29 02 16.4616           O-rich 25 0
10 OH 359.855-00.078 OH* 17 45 34.78560 -29 06 02.6784           O-rich 18 0
11 OH 359.911-00.059 OH* 17 45 38.29896 -29 02 32.0352           O-rich 5 0
12 OH 359.918-00.056 OH* 17 45 38.46048 -29 02 03.9408           O-rich 16 0
13 OH 359.952-00.036 OH* 17 45 38.58672 -28 59 45.6180           O-rich 13 0
14 NAME Sgr A West HII 17 45 39.4 -29 00 24           ~ 381 0
15 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
16 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
17 OH 359.954-00.041 OH* 17 45 40.13280 -28 59 47.7636           O-rich 23 0
18 OH 359.955-00.040 Mas 17 45 40.374 -28 59 41.48           ~ 1 0
19 OH 359.960-00.037 Mas 17 45 40.403 -28 59 19.16           ~ 2 0
20 OH 359.955-00.042 Mas 17 45 40.578 -28 59 44.41           ~ 7 0
21 OH 359.94-00.05 OH* 17 45 40.61208 -29 00 55.5084           O-rich 23 0
22 OH 359.946-00.047 OH* 17 45 40.63 -29 00 23.5           O-rich 65 0
23 OH 359.88-00.09 OH* 17 45 40.73880 -29 05 02.6196           O-rich 26 1
24 NAME Sgr A East SNR 17 45 41 -29 00.8           ~ 523 2
25 OH 359.932-00.059 OH* 17 45 41.39208 -29 01 26.7636           O-rich 10 0
26 OH 359.928-00.062 Mas 17 45 41.603 -29 01 46.59           ~ 6 0
27 OH 359.932-00.063 OH* 17 45 42.10968 -29 01 37.6896           O-rich 18 0
28 YRGFG F Mas 17 45 43.24 -29 01 34.5           ~ 3 0
29 YRGFG D Mas 17 45 43.27 -29 01 35.5           ~ 6 0
30 YRGFG E Mas 17 45 43.371 -29 01 32.45           ~ 5 0
31 OH 359.970-00.049 OH* 17 45 44.31912 -28 59 13.2720           O-rich 15 0
32 OH 359.939-00.067 Mas 17 45 44.337 -29 01 19.57           ~ 8 0
33 OH 359.985-00.041 OH* 17 45 44.73528 -28 58 14.5776           O-rich 8 0
34 OH 359.966-00.056 Mas 17 45 45.586 -28 59 37.03           ~ 1 0
35 OH 359.94-00.08 OH* 17 45 46.46712 -29 01 46.4232           O-rich 22 0
36 OH 359.902-00.103 OH* 17 45 47.36760 -29 04 23.6712           O-rich 11 1
37 OH 000.030-00.026 OH* 17 45 47.58192 -28 55 27.9660           O-rich 8 0
38 OH 359.986-00.061 OH* 17 45 49.40544 -28 58 49.4400           O-rich 28 0
39 OH 359.977-00.069 Mas 17 45 50.165 -28 59 28.20           ~ 2 0
40 GCM -0.02 -0.07 MoC 17 45 50.4 -28 59 06           ~ 182 0
41 OH 359.980-00.077 OH* 17 45 52.36272 -28 59 36.5208           O-rich 6 0
42 OH 359.977-00.087 OH* 17 45 54.31368 -29 00 02.7576           O-rich 16 0
43 OH 000.040-00.056 OH* 17 45 56.08032 -28 55 52.0464           O-rich 19 0
44 OH 000.007-00.088 OH* 17 45 58.90128 -28 58 35.0220           O-rich 11 0
45 OH 000.053-00.062 OH* 17 45 59.47152 -28 55 23.6316           M5-M9III-V 18 0
46 OH 359.97-00.12 OH* 17 46 00.92304 -29 01 23.2428           O-rich 22 0
47 OH 359.936-00.144 OH* 17 46 01.94184 -29 03 58.9716           O-rich 12 0
48 PMN J1751-2524 Rad 17 51 51.26253123 -25 24 00.0635706           ~ 91 1

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