J/MNRAS/418/2260 VLBI observations of NRAO 530 at 22, 43 and 86GHz (Lu+, 2011)
High-frequency very long baseline interferometry studies of NRAO 530.
Lu R.-S., Krichbaum T.P., Zensus J.A.
<Mon. Not. R. Astron. Soc., 418, 2260-2272 (2011)>
=2011MNRAS.418.2260L 2011MNRAS.418.2260L
ADC_Keywords: QSOs ; VLBI ; Radio sources ; Morphology
Keywords: galaxies: jets - quasars: individual: NRAO 530 -
radio continuum: galaxies
Abstract:
NRAO 530 is an optically violent variable source and has been studied
with multi-epoch multifrequency high-resolution very long baseline
interferometry (VLBI) observations. NRAO 530 was monitored with the
Very Long Baseline Array (VLBA) at three frequencies (22, 43 and
86GHz) on 10 consecutive days in 2007 May during observations of the
Galactic Centre (Sgr A*). Furthermore, analysis of archival data of
NRAO 530 at 15GHz over the last 10 years allows us to study its
detailed jet kinematics. We identified the compact component located
at the southern-end of the jet as the VLBI core, consistent with
previous studies.
Description:
During the global campaign on Sgr A* in 2007 May, NRAO 530 was
monitored as a calibrator with the VLBA from 2007 May 15 to 24
(2007.370-2007.395) at 22, 43 and 86GHz every day.
Objects:
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RA (2000) DE Designation(s)
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17 33 02.72 -13 04 49.5 NRAO 530 = QSO B1730-130
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table8.dat 65 47 Description of VLBA images of NRAO 530 shown
in Fig. 14 and Fig. 15
table9.dat 59 261 Model-fitting results for NRAO 530
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 8 F8.3 yr Epoch Epoch of observation
10- 11 I2 GHz Freq Observing frequency
13- 16 F4.2 Jy Speak Peak flux density (in Jy/beam)
18- 22 F5.3 mas FWHMa Full width at half maximum (FWHM) of the major
axis of restoring elliptical Gaussian beam
24- 28 F5.3 mas FWHMb Full width at half maximum (FWHM) of the minor
axis of restoring elliptical Gaussian beam
30- 35 F6.2 deg PA [-90/90] Position angle of the major axis of
restoring elliptical Gaussian beam
37- 65 A29 --- Cont Contours levels of the image, expressed as a
percentage of the peak intensity
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 2 I2 GHz Freq Observing frequency
4- 11 F8.3 yr Epoch Epoch of observation
13- 14 A2 --- Id Jet component designation
16- 21 F6.1 mJy Flux Flux
23- 27 F5.1 mJy e_Flux rms uncertainty on Flux
29- 33 F5.2 mas Sep Core separation
35- 38 F4.2 mas e_Sep rms uncertainty on Sep
40- 44 F5.1 deg PA [-90/90] Position angle
46- 49 F4.1 deg e_PA rms uncertainty on PA
51- 54 F4.2 mas Size Size of the component
56- 59 F4.2 mas e_Size rms uncertainty on Size
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 15-Sep-2012