J/A+A/364/391 86GHz VLBI survey of compact radio sources (Lobanov+ 2000)
86GHz VLBI survey of compact radio sources
Lobanov, A.P., Krichbaum, T.P., Graham, D.A., Witzel, A., Kraus, A.,
Zensus, J.A., Britzen, S., Greve, A., Grewing, M.
<Astron. Astrophys. 364, 391 (2000)>
=2000A&A...364..391L 2000A&A...364..391L
ADC_Keywords: Radio sources ; Redshifts ; VLBI
Keywords: galaxies: active - galaxies: jets - galaxies: nuclei -
galaxies: quasars: general - radio continuum: galaxies
Description:
File table1 contains the list of observed sources, providing the source
coordinates (J2000) and redshift, detection status, type, optical
magnitude, and brightness temperature of the radio emission.
File table4 contains the description of the VLBI data, and provide the
observed total and correlated flux densities, the parameters of single
gaussian component model fits, and the parameters of hybrid images of
the observed sources.
File table5 contains multicomponent model fits for the sources with
detected extended structures and the brightness temperatures derived
from these model fits.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 82 28 Observed source list
table4.dat 113 26 Database description; correlated flux densities;
single component model fits; image parameters
table5.dat 93 36 Multi component model fits of the source structure
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- IAU IAU name (based on B1950 position)
10- 19 A10 --- Name Usual Name (as in other tables)
21- 22 I2 h RAh Right ascension (J2000.0)
24- 25 I2 min RAm Right ascension (J2000.0)
27- 34 F8.5 s RAs Right ascension (J2000.0)
36 A1 --- DE- Declination sign (J2000.0)
37- 38 I2 deg DEd Declination (J2000.0)
40- 41 I2 arcmin DEm Declination (J2000.0)
43- 49 F7.4 arcsec DEs Declination (J2000.0)
51- 54 A4 --- Stat Observational status (1)
56- 60 F5.3 --- z ? Redshift
62- 67 A6 --- Type Type of object (2)
69- 72 F4.1 mag Vmag ? Optical magnitude
74 A1 --- l_Tbmax ">" sign for lower limits of Tb
75- 81 F7.2 10+10K Tbmax ? Maximum measured brightness temperature
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Note (1): Observational status:
"-" - not detected
"+" - detected
"++" - detected and imaged
"R" - also observed by Rantakyro et al. (1998A&AS..131..451R 1998A&AS..131..451R)
"L" - also observed by Lonsdale et al. (1998AJ....116....8L 1998AJ....116....8L)
Note (2): Type of object:
"LPQ" - low polarization quasar
"HPQ" - high polarization quasar
"BL", "BL Lac" - BL Lac type object
"E" - elliptical galaxy
"Sy" - Seyfert galaxy
"Sa" - spiral galaxy
"Star" - radio emitting star
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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 --- Name Source name
12- 16 A5 --- Array Observing VLBI array (1)
18- 21 I4 --- Nuv Number of uv-data points
23- 25 I3 --- Nclo ? Number of closure phase data points
27- 28 I2 --- Ns Number of observing scans
30- 33 F4.1 Jy Stot Total observed 86GHz flux density
35- 38 F4.1 Jy S1 ? Correlated flux density on short baselines
40- 42 F3.1 Jy e_S1 ? Error of the correlated flux density
44- 46 I3 --- B1 ? Baseline length (in Mlam)
48- 50 F3.1 Jy S2 ? Correlated flux density on long baselines
52- 54 F3.1 Jy e_S2 ? Error of the correlated flux density
56- 59 I4 --- B2 ? Baseline length (in Mlam)
61- 64 F4.1 Jy Smod Gaussian model fit: flux density
66- 69 F4.2 mas a Gaussian model fit: major axis
71- 73 F3.1 --- b/a Gaussian model fit: axial ratio
75- 77 I3 deg phi ? Gaussian model fit: major axis position angle
79- 83 F5.2 Jy St ? Hybrid image: total flux density
85- 88 F4.2 Jy Sp ? Hybrid image: peak flux density (in Jy/beam)
90- 93 F4.1 mJy Sn ? Hybrid image: lowest positive image contour
(in Jy/beam)
95- 98 F4.1 mJy rms ? Hybrid image: off-source RMS noise
(in Jy/beam)
100-103 F4.2 mas bmaj ? Restoring beam: major axis
105-108 F4.2 mas bmin ? Restoring beam: minor axis
111-113 I3 deg bpos ? Restoring beam: position angle
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Note (1): Telescope name abbreviations:
"E" - Effelsberg
"P" - Pico Veleta
"S" - Onsala
"K" - Haystack
"Q" - Quabbin
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Source name
12- 13 A2 --- m_Name Component designation
15- 18 I4 Jy Sp Peak flux density (in Jy/beam)
20- 22 I3 Jy e_Sp Error of the peak flux density (in Jy/beam)
24- 27 I4 Jy St Component flux density (in Jy/beam)
29- 31 I3 Jy e_St Error of the component flux density (in Jy/beam)
33- 36 F4.2 mas R Component distance
38- 41 F4.2 mas e_R Error of the component distance
44- 48 F5.1 deg Theta ? Component position angle
50- 53 F4.1 deg e_Theta ? Error of the component position angle
55- 58 F4.2 mas Diam Component diameter
60- 63 F4.2 mas e_Diam Error of the component diameter
65- 70 F6.2 10+10K Tb Component brightness temperature
72- 76 F5.2 10+10K e_Tb Error of the component brightness temperature
78- 82 F5.2 --- Xamp Amplitude chi-square (1)
84- 87 F4.2 --- Xclo Closure phase chi-square (1)
89- 93 F5.2 --- Xtot Combined chi-square (1)
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Note (1): Chi-square of the fit after introducing the respective component
into the model.
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Acknowledgements: Andrei Lobanov
(End) Andrei Lobanov [MPIfR, Bonn] 17-Oct-2000