J/AJ/128/1570 8.4GHz VLBA observations of scintillating sources (Ojha+, 2004)
VLBA snapshot imaging survey of scintillating sources.
Ojha R., Fey A.L., Lovell J.E.J., Jauncey D.L., Johnston K.J.
<Astron. J., 128, 1570-1587 (2004)>
=2004AJ....128.1570O 2004AJ....128.1570O
ADC_Keywords: Radio sources ; Polarization
Keywords: galaxies: active - galaxies: jets - galaxies: nuclei - polarization -
quasars: general - reference systems
Abstract:
We present 8.4GHz Very Long Baseline Array (VLBA) observations of 75
extragalactic radio sources drawn from the scintillating sources
discovered in the Microarcsecond Scintillation-induced Variability
survey.
Description:
We used the VLBA to observe 75 sources during two 24hr experiments on
2003 January 27 and 30.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 55 75 Parameters of naturally weighted total intensity
images
table2.dat 55 75 Parameters of naturally weighted linear
polarization images
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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 --- [OFL2004] Source name (based on J2000 position)
12- 14 F3.1 mas MajAxis Restoring-beam major axis
16- 18 F3.1 mas MinAxis Restoring-beam minor axis
20- 22 I3 deg PA [-23/51] Restoring-beam position angle (1)
24- 29 F6.2 mJy Sp8.4GHz Peak flux density at 8.4GHz(2)
31- 34 F4.2 mJy RMS Final hybrid image rms residual (2)
36- 55 A20 --- Levels Contour levels (3)
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Note (1): Measured north through east.
Note (2): In units of mJy/beam.
Note (3): Represented by the geometric series 1, ..., 2n, e.g.,
for n = 5 the contour levels would be ± 1, 2, 4, 8, 16, 32.
When n = 0, only the single contour level is given.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 12-May-2005