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J/AJ/143/35         KCAL VERA 22 GHz calibrator survey       (Petrov+, 2012)

The KCAL VERA 22 GHz calibrator survey. Petrov L., Honma M., Shibata S.M. <Astron. J., 143, 35 (2012)> =2012AJ....143...35P
ADC_Keywords: VLBI ; Radio sources Keywords: catalogs - surveys - interferometry Abstract: We observed at 22GHz with the VLBI array VERA a sample of 1536 sources with correlated flux densities brighter than 200mJy at 8GHz. One half of target sources has been detected. The detection limit was around 200mJy. We derived the correlated flux densities of 877 detected sources in three ranges of projected baseline lengths. The objective of these observations was to determine the suitability of given sources as phase calibrators for dual-beam and phase-referencing observations at high frequencies. Preliminary results indicate that the number of compact extragalactic sources at 22GHz brighter than a given correlated flux density level is twice less than at 8GHz. Description: The KCAL catalog presents correlated flux densities of 877 sources at declination >-30° at 22GHz at three ranges of baseline projection lengths (in Mλ = mega wavelengths): 1) [0, 70]; 2) [70, 100]; 3) [109, 150] File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 92 877 KCAL catalog of correlated flux densities
See also: J/A+A/445/465 : ACTA 18.5 and 22GHz fluxes of Kuehr 5GHz sample (Ricci+, 2006) J/AJ/133/2487 : VERA 22GHz Fringe Search Survey (Petrov+, 2007) J/AJ/142/89 : VLBA Galactic Plane Survey. VGaPS (Petrov+, 2011) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 10 A10 --- IAU IAU source J2000 name 12- 19 A8 --- IVS IVS (International VLBI Service) name (B1950) 21 A1 --- n_IVS [TC] Target source or amplitude Calibrator 23 I1 --- NExp Number of experiments source has been observed 25- 26 I2 --- Nobs Number of observations source has been detected 28- 33 F6.3 Jy F70 ?=-1 Median correlated flux density at baseline projection lengths <70Mλ 35- 40 F6.3 Jy F70-100 ?=-1 Median correlated flux density at baseline projection lengths 70-100Mλ 42- 47 F6.3 Jy F100 ?=-1 Median correlated flux density at baseline projection lengths >100Mλ 49- 54 F6.3 Jy e_F70 ?=-1 Mean error in F70 56- 61 F6.3 Jy e_F70-100 ?=-1 Mean error in F70-100 63- 68 F6.3 Jy e_F100 ?=-1 Mean error in F100 70- 71 I2 h RAh Hours of Right Ascension (J2000) 73- 74 I2 min RAm Minutes of Right Ascension (J2000) 76- 80 F5.2 s RAs Seconds of Right Ascension (J2000) 82 A1 --- DE- Sign of the Declination (J2000) 83- 84 I2 deg DEd Degrees of Declination (J2000) 86- 87 I2 arcmin DEm Arcminutes of Declination (J2000) 89- 92 F4.1 arcsec DEs Arcseconds of Declination (J2000)
Acknowledgements: Leonid Petrov, Leonid.Petrov(at)
(End) Patricia Vannier [CDS] 02-Mar-2012
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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