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Data:
OH
UKI84 - Stellar OH masers with polarized features at intermediate velocities
Interferometry data
Short title
: Ukita & Le Squeren (1984)
Authors
: Ukita, N. Le Squeren, A. M.
Journal
: Astronomy and Astrophysics (ISSN 0004-6361), vol. 138, no. 2, Sept. 1984, p. 343-352.
Bibcode
:
1984A&A...138..343U
Abstract
Peculiar profiles were discovered in EY And, one of five new sources found in an OH maser search. The 1612-MHz emission has a typical, double-peak structure, but the main-line masers show polarized features at the central velocity of the 1612-MHz emission. The line shape of the SiO maser resembles that of the 1665-MHz emission. Maser sources with polarized OH emission at intermediate velocities are discussed in the context of two kinematic models. Expanding envelopes with a smooth velocity field would require some of the polarized OH features to arise in the innermost part of the envelopes. Distortion of a smooth outflow by interaction with the ambient gas cannot explain the peculiar OH emission. It is interpreted as a fluctuation of the velocity field of the expanding envelope. The polarized features in both main-line spectra have the same sense of circular polarization when they appear at nearly the same velocity. This evidence is consistent with the mechanism proposed by Cook and Shklovskii.
Comments:
Velocity resolution: 0.90 km/s
Upper limit for non-detections: 0.1-0.3 Jy (3σ)
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Table (CSV)
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Detection table from Ukita & Le Squeren (1984)
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individual components
ID
Obs. RA
Obs. Dec
l
b
Source name
Frequency
V
low
V
up
V
peak
V
peak(2)
F
peak
F
peak(2)
List
Ref.
Detection
(J2000)
(J2000)
(deg.)
(deg.)
(MHz)
(km/s)
(km/s)
(km/s)
(km/s)
(Jy)
(Jy)
Yes
/
No
1
04 40 30.2
-38 14 10
241.324675
-41.316178
R Cae
1665
3.5
3.5
0.200
ENG15
UKI84
-H
2
O
+H
2
O
+OH
+SiO
2
04 40 30.2
-38 14 10
241.324675
-41.316178
R Cae
1667
3.5
3.5
0.170
ENG15
UKI84
-H
2
O
+H
2
O
+OH
+SiO
3
05 46 52.4
+69 58 04
143.442689
20.098994
IRC+70066
1665
13.5
13.5
0.500
ENG15
UKI84
+H
2
O
+OH
+SiO
4
05 46 52.4
+69 58 04
143.442689
20.098994
IRC+70066
1667
-18.0
16.0
-18.0
16.0
0.350
0.55
ENG15
UKI84
+H
2
O
+OH
+SiO
5
15 11 40.8
-06 00 44
353.823435
42.588553
Y Lib
1665
14.0
14.0
0.250
ENG15
UKI84
+H
2
O
+OH
+SiO
6
15 11 40.8
-06 00 44
353.823435
42.588553
Y Lib
1667
14.0
14.0
0.200
ENG15
UKI84
+H
2
O
+OH
+SiO
7
22 07 19
+11 53 53
71.926961
-34.2593
IRC+10510
1667
22.5
34.0
22.5
34.0
0.150
0.09
ENG15
UKI84
-H
2
O
+OH
+SiO
8
23 45 3.2
+43 55 10
110.484872
-17.34202
EY And
1612
-54.0
-31.0
-54.0
-31.0
0.550
0.8
ENG15
UKI84
+H
2
O
+OH
+SiO
9
23 45 3.2
+43 55 10
110.484872
-17.34202
EY And
1665
-42.0
-42.0
0.900
ENG15
UKI84
+H
2
O
+OH
+SiO
10
23 45 3.2
+43 55 10
110.484872
-17.34202
EY And
1667
-42.0
-42.0
0.600
ENG15
UKI84
+H
2
O
+OH
+SiO
Non-detection table from Ukita & Le Squeren (1984)
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