2004MNRAS.347.1164P

Query : 2004MNRAS.347.1164P

2004MNRAS.347.1164P - Mon. Not. R. Astron. Soc., 347, 1164-1172 (2004/February-1)

VLA observations of 6-cm excited OH.

PALMER P., GOSS W.M. and WHITEOAK J.B.

Abstract (from CDS):

The Very Large Array (VLA) was used to determine precise positions for 4765-MHz OH maser emission sources toward star-forming regions which had been observed about seven months earlier with the Effelsberg 100-m telescope. The observations were successful for K3-50, DR21EX, W75N and W49A. No line was detected toward S255: this line had decreased to less than 5 per cent of the flux density observed only seven months earlier. The time-variability of the observed features during the past 30 yr is summarized. In addition, to compare with the Effelsberg observations, the 4750- and 4660-MHz lines were observed in W49A. These lines were found to originate primarily from an extended region which is distinguished as an exceptional collection of compact continuum components as well as by being the dynamical centre of the very powerful H2O outflow.

Abstract Copyright: 2004 RAS

Journal keyword(s): masers - ISM: individual: DR21EX - ISM: individual: K3-50 - ISM: individual: W49A - ISM: individual: W75N - radio lines: ISM

Simbad objects: 28

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Number of rows : 28
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 1032 3
2 NAME Mon R2 HII 06 07 47.58 -06 22 42.6           ~ 742 2
3 SH 2-256 HII 06 12 36 +17 56.9           ~ 57 1
4 SH 2-255 N HII 06 12 53.3 +18 00 42           ~ 30 0
5 MMB G192.600-00.048 Y*O 06 12 54.0100 +17 59 23.200           ~ 401 0
6 IC 2162 HII 06 13 04.1 +17 58 44           ~ 360 2
7 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2266 1
8 [DJW84] W49 G2a Rad 19 10 13.417 +09 06 13.14           ~ 16 0
9 [DJW84] W49 G1 HII 19 10 13.42 +09 06 12.8           ~ 23 0
10 [DJW84] W49 G2b Rad 19 10 13.450 +09 06 12.98           ~ 13 0
11 [DJW84] W49 G2 HII 19 10 13.47 +09 06 13.2           ~ 19 0
12 [DJW84] W49 G2c Rad 19 10 13.48 +09 06 13.1           ~ 10 0
13 [DJW84] W49 G3 Rad 19 10 13.55 +09 06 12.1           ~ 13 0
14 [DJW84] W49 G4 Rad 19 10 13.57 +09 06 13.5           ~ 13 0
15 [DJW84] W49 G5 Rad 19 10 13.66 +09 06 12.4           ~ 13 0
16 W 49a BL? 19 10 15.7 +09 06 05           ~ 306 2
17 W 49 SFR 19 10 20 +09 07.7           ~ 575 1
18 [DJW84] W49S-1 Rad 19 10 21.60 +09 05 01.2           ~ 4 0
19 NAME W 49A South HII 19 10 21.833 +09 05 03.30           ~ 55 2
20 CTB 82 Mas 20 01.7 +33 33           ~ 38 0
21 W 58a HII 20 01 45.8 +33 32 43           ~ 289 4
22 OH 1959+33 Mas 20 01 54.03 +33 34 14.2           ~ 33 0
23 NAME Cyg X FIR 33 Y*O 20 38 35.9 +42 37 22           B1.5 401 1
24 NAME DR 21EX Rad 20 39 00.346 +42 24 39.14           ~ 4 0
25 DR 21 (OH) cor 20 39 01.01 +42 22 50.2           ~ 410 0
26 DR 21 SFR 20 39 01.6 +42 19 38           O4.5 1055 0
27 NAME NGC 7538 IRS 1(OH) Mas 23 13 45.5 +61 28 10           ~ 11 0
28 PP 56 ISM ~ ~           ~ 1 0

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