2008A&A...480..767D


Query : 2008A&A...480..767D

2008A&A...480..767D - Astronomy and Astrophysics, volume 480, 767-773 (2008/3-4)

First VLBI observations of methanol maser polarisation, in G339.88-1.26.

DODSON R.

Abstract (from CDS):

We investigate class II methanol masers and the environment in which they form with the Long Baseline Array (LBA). Using full polarisation VLBI, we were able to measure the magnetic field directions so as to distinguish between the two main models of the environment in which methanol masers form: disks or shocks. We present polarised images of the methanol maser source G339.88-1.26, made with the LBA at 6.7-GHz. With these first polarisation maps made with the LBA, which successfully reproduce observations with the ATCA confirming the new AIPS code, a new technique for Southern VLBI is opened. The magnetic field directions found are inconstant with methanol masers arising in disks for the majority of the emission.

Abstract Copyright:

Journal keyword(s): techniques: polarimetric - masers - radio lines: stars - stars: formation - stars: individual: G339.88-1.26

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 981 2
2 QSO B1334-127 QSO 13 37 39.7829208840 -12 57 24.693846264   18.5 18.5 16.22   ~ 456 1
3 IRAS 15437-5343 Y*O 15 47 32.73 -53 52 38.4           ~ 47 0
4 QSO B1610-771 QSO 16 17 49.2769354248 -77 17 18.470846112   19.19 19.0 17.32   ~ 147 1
5 PSR J1625-4050 Psr 16 25 10.33 -40 48 21.5           ~ 15 0
6 OH 339.88 -1.26 Y*O 16 52 04.67 -46 08 34.2           ~ 71 0
7 GAL 339.88-01.26 HII 16 52 04.7 -46 08 34           ~ 36 0
8 PSR J1703-4902 Psr 17 03 54.5300 -48 52 01.000           ~ 26 0
9 NAME NGC 6334F (C) HII 17 20 53.45 -35 47 02.6           ~ 215 1
10 NGC 6328 QSO 17 23 41.0305522680 -65 00 36.624749364   13.17 13.2 11.45 12.2 ~ 219 1
11 QSO B1921-293 BLL 19 24 51.0555700728 -29 14 30.118109640   18.71 18.21 15.07   ~ 766 0
12 NGC 7538 OpC 23 13 37 +61 30.0           ~ 849 1

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2022.05.24-10:33:42

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