2014MNRAS.443.3819G


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.28CET17:57:57

2014MNRAS.443.3819G - Mon. Not. R. Astron. Soc., 443, 3819-3838 (2014/October-1)

Polarization maser observations of late-type stars at OH 1665 and 1667 MHz.

GONIDAKIS I., CHAPMAN J.M., DEACON R.M. and GREEN A.J.

Abstract (from CDS):

We present full-polarization observations, taken with the Parkes radio telescope, of the OH masers at 1665 and 1667 MHz in 34 evolved stars comprising 25 post-Asymptotic Giant Branch (post-AGB) stars and nine high-mass AGB stars (known as LI sources). The main objectives of the present study were to investigate the OH mainline polarization properties of post-AGB stars and high-mass AGB stars and to determine whether there is an association between polarization properties and evolutionary age. Circular and/or linear polarization was detected from 21 of the 34 observed stars. Linear polarization was detected as often as circular polarization, and was relatively more common in the 1667 MHz line. Circular polarization is stronger at 1665 MHz. The massive AGB stars appear to have the strongest magnetic fields. For the post-AGB stars there is a trend for increasing magnetic field strength at the location of the OH mainline masers with increasing post-AGB age. We infer that changes to the stellar magnetic fields play a significant role in the emergence of non-spherical morphologies in post-AGB stars. Six sources show narrow linearly polarized features at 1667 MHz with no corresponding circular polarization at 1667 MHz, that are interpreted as candidate π-components. In one source, a candidate π-component is identified through a Zeeman triplet.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): masers - polarization - techniques: polarimetric - stars: AGB and post-AGB - magnetic fields - stars: winds, outflows

Simbad objects: 53

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Number of rows : 53

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 935 2
2 NAME Hya A LIN 09 18 05.651 -12 05 43.99   14.38 14.8     ~ 891 1
3 OH 326.5 -0.4 pA* 15 48 19.37 -54 58 21.2           ~ 22 0
4 OH 326.530 -0.419 Mas 15 48 19.498 -54 58 21.52           ~ 5 0
5 OH 326.5 -0.6 pA* 15 49 11.3361694808 -55 08 51.838137874           ~ 28 0
6 IRAS 15544-5332 pA? 15 58 18.830 -53 40 39.84           ~ 13 0
7 OH 344.93 +0.01 OH* 17 03 56.206 -41 23 59.25           ~ 30 0
8 IRAS 17097-3624 OH* 17 13 05.01048 -36 27 54.4320           ~ 8 0
9 RAFGL 6815S pA* 17 18 19.8316623567 -32 27 21.376880888           G2I 144 0
10 OH 348.668 -0.715 OH* 17 18 34.776 -38 48 57.37           ~ 3 0
11 IRAS 17151-3845 IR 17 18 36.5 -38 48 59           ~ 4 0
12 OH 349.81 -0.32 OH* 17 20 15.03600 -37 39 33.8436           ~ 30 0
13 IRAS 17245-3951 pA* 17 28 04.65 -39 53 44.3           ~ 35 0
14 OH 355.03 +0.17 * 17 32 39.14064 -33 04 15.1860           ~ 11 0
15 OH 354.88 -0.54 OH* 17 35 02.72 -33 33 29.4           ~ 65 1
16 IRAS 17371-2747 mul 17 40 20.7 -27 49 11           ~ 15 0
17 OHPN 6 PN 17 40 23.07240 -27 49 11.9928           ~ 11 0
18 OH 0.9 +1.3 pA* 17 42 33.0790162842 -27 28 25.844214046           ~ 52 0
19 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11191 0
20 OH 1.5 -0.1 OH* 17 49 20.93232 -27 41 54.5460           ~ 12 0
21 IRAS 17548-2753 OH* 17 57 58.2956904478 -27 53 20.395801470           ~ 10 0
22 OH 7.96 +1.45 OH* 17 58 04.9 -21 21 07           ~ 23 0
23 OH 7.961 +1.445 OH* 17 58 04.953 -21 21 07.07           ~ 3 0
24 IRAS 17560-2027 mul 17 59 04.5 -20 27 24           ~ 12 0
25 OH 8.85 +1.69 OH* 17 59 05.0224579973 -20 27 25.096119430         16.28 ~ 11 0
26 GAL 005.88-00.41 HII 18 00 30.388 -24 04 00.20           ~ 295 0
27 SCHB 263 Mas 18 00 49.500 -26 53 12.52           ~ 2 0
28 IRAS 17576-2653 pA? 18 00 49.700 -26 53 14.00           ~ 11 0
29 OH 9.097 -0.392 OH* 18 07 20.861 -21 16 10.86           ~ 32 0
30 V* VX Sgr s*r 18 08 04.0431479808 -22 13 26.629744195 11.72 9.41 6.52 3.90 2.11 M8.5Ia 539 0
31 OH 6.59 -2.01 OH* 18 08 12.819 -24 14 36.73           ~ 14 0
32 OH 11.5 +0.1 OH* 18 10 38.6739104595 -18 52 58.359244335           ~ 34 0
33 OH 15.7 +0.8 OH* 18 16 25.376 -14 55 15.66           ~ 71 0
34 OH 16.1 -0.3 AB* 18 21 06.4228492667 -15 03 29.637806159           ~ 45 1
35 IRAS 18246-1032 OH* 18 27 24.0 -10 30 24           ~ 16 0
36 Caswell OH 020.86+00.48 Mas 18 27 25.9 -10 30 24           ~ 3 0
37 OH 20.68 +0.08 AB* 18 28 27.686 -10 50 19.38           ~ 39 1
38 OH 21.5 +0.5 OH* 18 28 30.937 -09 58 14.32           ~ 87 0
39 OH 17.7 -2.0 pA* 18 30 30.703 -14 28 57.04           ~ 132 1
40 GRS G024.80 +00.10 SFR 18 38 14.8 -06 47 39           ~ 100 0
41 IRAS 18389-0601 * 18 41 35.93328 -05 58 50.8260           ~ 6 0
42 OH 30.7 +0.4 OH* 18 45 52.408 -01 46 42.64           ~ 64 1
43 OH 31.0 +0.0 OH* 18 47 41.13768 -01 45 11.4048           ~ 122 1
44 OH 30.1 -0.7 OH* 18 48 41.949 -02 50 28.85           ~ 91 0
45 OH 30.39 -0.71 pA* 18 49 19.446 -02 34 49.90           ~ 7 0
46 IRAS 18485+0642 pA* 18 50 59.6106304202 +06 45 59.095233513           ~ 14 0
47 OH 37.1 -0.8 OH* 19 02 06.286 +03 20 15.99           ~ 64 0
48 IRAS 18596+0315 mul 19 02 06.4 +03 20 15           ~ 59 1
49 OH 35.2 -2.6 pA* 19 05 02.060 +00 48 50.90   17.0   15.1 14.36 G0-5 42 0
50 OH 48.6 +0.0 Mas 19 20 27 +13 55.0           ~ 3 0
51 ICRF J193925.0-634245 Sy2 19 39 25.02671 -63 42 45.6255   18.87 18.37 17.64   ~ 934 1
52 NAME Cyg X FIR 33 Y*O 20 38 35.9 +42 37 22           B1.5 359 1
53 IRAS 20406+2953 PN? 20 42 45.9536982690 +30 04 06.483437326           ~ 28 0

    Equat.    Gal    SGal    Ecl

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2020.01.28-17:57:57

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