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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
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:
FileName Lrecl Records Explanations
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
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
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
Note (1): Observational status: "-" - not detected "+" - detected "++" - detected and imaged "R" - also observed by Rantakyro et al. (1998A&AS..131..451R) "L" - also observed by Lonsdale et al. (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
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
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
Note (1): Telescope name abbreviations: "E" - Effelsberg "P" - Pico Veleta "S" - Onsala "K" - Haystack "Q" - Quabbin
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
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)
Note (1): Chi-square of the fit after introducing the respective component into the model.
Acknowledgements: Andrei Lobanov
(End) Andrei Lobanov [MPIfR, Bonn] 17-Oct-2000
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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