J/A+A/414/235 OH maser emission from star forming regions (Szymczak+, 2004)
Observations of hydroxyl ground state transitions in a complete sample of
methanol sources.
Szymczak M., Gerard E.
<Astron. Astrophys. 414, 235 (2004)>
=2004A&A...414..235S 2004A&A...414..235S
ADC_Keywords: H II regions ; Masers ; Radio lines
Keywords: masers - surveys - star: formation - ISM: molecules -
radio lines: ISM - HII regions
Description:
High sensitivity observations of all four transitions of the ground
state at 18cm of OH in both senses of circular polarization have been
carried out with the Nancay radio telescope. The sample was a set of
100 star forming regions detected in a recent unbiased survey of
6668MHz methanol masers (Szymczak et al., 2002A&A...392..277S 2002A&A...392..277S). OH
maser emission was found in 55 objects of which 31 were not previously
catalogued.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 66 157 Main line detections
table2.dat 63 85 Satellite line detections
table3.dat 15 7 Number of masers
table4.dat 31 31 Non-detections
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Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Source Source name from 2002A&A...392..277S 2002A&A...392..277S
([SKH2002] in Simbad)
13- 16 I4 MHz Freq Line frequency
19- 25 I7 d Date Date of observation in JD
27- 30 F4.1 km/s DV Velocity interval at zero intensity
32- 36 F5.1 km/s Vc Velocity of centre
38- 42 F5.1 km/s Vp Velocity of peak
45- 49 F5.2 Jy Sp Flux density of peak
51- 56 F6.2 Jy.km/s Si Integrated flux density
59- 63 F5.2 --- mc [0,1]? Degree of circular polarization
66 I1 --- Ref [1,4]? Reference for previous detection (1)
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Note (1): References:
1: Caswell & Haynes, 1983AuJPh..36..417C 1983AuJPh..36..417C
2: Caswell et al., 1995MNRAS.272...96C 1995MNRAS.272...96C
3: Braz & Epchtein, 1983A&AS...54..167B 1983A&AS...54..167B
4: Argon et al., 2000ApJS..129..159A 2000ApJS..129..159A
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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2 I1 --- F1612MHz [0/1] Flag for 1612MHz line (1)
5 I1 --- F1665MHz [0/1] Flag for 1665MHz line (1)
8 I1 --- F1667MHz [0/1] Flag for 1667MHz line (1)
11 I1 --- F1720MHz [0/1] Flag for 1720MHz line (1)
14- 15 I2 --- Nsources Number of sources
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Note (1): Flag:
1 - line present
0 - line absent
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Source Source name
13- 19 I7 d Date Date of observation in JD
22- 31 A10 --- Sidelobe Sidelobe form
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Acknowledgements:
Marian Szymczak
(End) Marian Szymczak [N. Copernicus Univ], Patricia Bauer [CDS] 18-Dec-2003