VIII/80 The UTR-2 Very Low-Frequency Sky Survey Data (Braude+ 1978-2002)
The UTR-2 Very Low-Frequency Sky Survey Data
Decametric survey of discrete sources in the northern sky.
II. Source catalogue in the range of declinations +10 to +20
Braude S.Ya., Megn A.V., Rashokovski S.L., Ryabov B.P., Sharykin N.K.,
Sokolov K.P., Tkatchenko A.P., Zhouk I.N.
<Astrophys. Space Sci., 54, 37 (1978)>
=1978Ap&SS..54...37B 1978Ap&SS..54...37B
Decametric survey of discrete sources in the northern sky.
V. Source catalogue in the range of declinations 0 to +10.
Braude S.Ya., Megn A.V., Sokolov K.P., Tkatchenko A.P., Sharykin N.K.
<Astrophys. Space Sci., 64, 73 (1979)>
=1979Ap&SS..64...73B 1979Ap&SS..64...73B
Decametric survey of discrete sources.
VII. Source catalogue in the range of declination -2 to -13.
Braude S.Ya., Miroshnitchenko A.P., Sokolov K.P., Sharykin N.K.
<Astrophys. Space Sci., 74, 409 (1981)>
=1981Ap&SS..74..409B 1981Ap&SS..74..409B
Decametric survey of discrete sources in the northern sky.
IX. Source catalogue in the declination range 52 to 60.
Braude S.Ya., Sharykin N.K., Sokolov K.P., Zakcharenko S.M.
<Astrophys. Space Sci., 111, 1 (1985)>
=1985Ap&SS.111....1B 1985Ap&SS.111....1B
Decametric survey of discrete sources in the northern sky.
XI. The results of the UTR-2 very low-frequency sky survey in the declination
range 41 deg. to 52
Braude S.Ya., Sokolov K.P., Zakcharenko S.M.
<Astrophys. Space Sci., 213, 1 (1994)>
=1994Ap&SS.213....1B 1994Ap&SS.213....1B
Decametric survey of discrete sources in the northern sky.
XIIIa. The catalogue of sources in declination range +30deg. to +40deg.
Braude S.Y., Rashkovsky S.L., Sidorchuk K.M., Sidorchuk M.A., Sokolov K.P.,
Sharykin N.K., Zakharenko S.M.
<Astrophys. Space Sci., 280, 235 (2002)>
=2002Ap&SS.280..235B 2002Ap&SS.280..235B
ADC_Keywords: Radio sources
Description:
The results of the very-low frequency (16.7MHz) survey of discrete
sources made with the UTR-2 radio telescope is presented. The survey
concerns the declination zones -13° to -2°, 0° to 20°,
30° to 40°, and 41° to 60°. The UTR-2 radio source
catalogue contains an estimate of the coordinates and flux densities
of 1819 sources measured at a number of the lowest frequencies used in
contemporary radio astronomy within the range from 10 to 25 MHz.
The catalogue is made of two parts:
mean.dat: the averaged values of the coordinates and the corresponding
errors, the source flux-density at the middle UTR-2 frequency 16.7 MHz
as obtained from measured spectrum of the source at all UTR-2
frequencies and its error, the value of measured low-frequency
spectral index with respect to which the estimate of has been
obtained, the parameter W characterizing the integral reliability of
the obtained source estimates and the corresponding object name from
higher-frequency radio survey provided the source has been identified.
To indicate the integral readability of the source parameters obtained
we used the symbols A, B and C. These reliability estimates take into
account the total number of measurements, coordinate scatter, number
of frequencies and hour-angle settings at which the source parameters
have been evaluated. The highly reliable observation results have been
marked with symbol A . The sources whose parameters can be used
without an additional analysis are marked with B and sources whose
parameters are to be used with care have been marked with C.
data.dat: this file contains the experimental estimates of the source
coordinates and flux densities as well as their errors at each
operating frequency of the UTR-2 in the order of their increasing; the
total number (N) of successive observations according to which the
estimates were obtained and the number of different hour-angle
settings (NRA) of the reception pattern at which the source was
observed. In cases when the observations did not allow us to obtain a
reliable estimates of a source flux density the catalogue contains
only their upper limits which are not accompanied by errors. The
approximated values of as well as low-frequency spectral indices are
presented only for those sources which have flux density estimates
obtained at not less than three different UTR-2 frequencies.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
mean.dat 144 2302 Averaged values and cross-identifications
data.dat 86 10030 Experimental estimates at each operating
frequency of the UTR-2
--------------------------------------------------------------------------------
Byte-by-byte Description of file: mean.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 13 A13 --- Name *Source name (individual data in file data.dat)
14 A1 --- Eq [JB] Original equinox of position (G1)
15- 16 I2 h RA1h ? Right ascension (B1950)
18- 19 I2 min RA1m ? Right ascension (B1950)
21- 22 I2 s RA1s ? Right ascension (B1950)
24- 26 I3 s e_RA1s ? rms uncertainty on RA1s
28- 33 F6.2 deg DE1deg ? Declination (B1950)
35- 39 F5.2 deg e_DE1deg ? rms uncertainty on DE1deg
41- 42 I2 h RAh Right ascension (J2000)
44- 45 I2 min RAm Right ascension (J2000)
47 -48 I2 s RAs Right ascension (J2000)
50- 52 I3 s e_RAs rms uncertainty on RAs
54- 59 F6.2 deg DEdeg Declination (J2000)
61- 65 F5.2 deg e_DEdeg rms uncertainty on DEdeg
67- 70 F4.1 MHz Freq ? Frequency
72 A1 --- l_S Limit flag on flux density
73- 76 I4 Jy S ? Flux-density at frequency Freq (16.7MHz)
78- 80 I3 % e_S ? rms uncertainty on flux density
88- 91 F4.1 --- SI ? Low-frequency spectral index
93- 95 F3.1 --- e_SI ? rms uncertainty on SI
97 A1 --- W *[ABC] Integrated estimate of reliability
99-134 A36 --- OtherName Other names
135-144 A10 --- GName Galactic source number (lll.l+bb.b) for
paper XIIIa only
--------------------------------------------------------------------------------
Note on Name: the name includes the publication number (2,5,7,9,11),
"GRB" (the B indicates that 1950 positions are used in the name).
hours and minutes of RA(1950), and degrees of Declination(1950).
Up to 6 lines in file data.dat contain the experimental estimates
of the source coordinates and flux densities as well as their errors
at each operating frequency of the UTR-2.
Note on W: the reliability index takes the values as follows:
A = Highly reliable data
B = Results that can be used without an additional analysis
C = Data requiring additional analysis, up to an examination of the
original analogue records
--------------------------------------------------------------------------------
Byte-by-byte Description of file: data.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 13 A13 --- Name *Source name, as in file mean.dat
14 A1 --- Eq [JB] Original equinox of position (G1)
15- 16 I2 h RA1h ? Right ascension (B1950)
18- 19 I2 min RA1m ? Right ascension (B1950)
21- 22 I2 s RA1s ? Right ascension (B1950)
24- 26 I3 s e_RA1s ? rms uncertainty on RAs
28- 33 F6.2 deg DE1deg ? Declination (B1950)
35- 39 F5.2 deg e_DE1deg ? rms uncertainty on DEdeg
41- 42 I2 h RAh Right ascension (J2000)
44- 45 I2 min RAm Right ascension (J2000)
47- 48 I2 s RAs Right ascension (J2000)
50- 52 I3 s e_RAs rms uncertainty on RAs
54- 59 F6.2 deg DEdeg Declination (J2000)
61- 65 F5.2 deg e_DEdeg rms uncertainty on DEdeg
67- 70 F4.1 MHz Freq Frequency
72 A1 --- l_S Limit flag on fLux density
73- 76 I4 Jy S Flux-density at frequency Freq
78- 80 I3 % e_S ? rms uncertainty on flux density
82- 84 I3 --- N Total number of successful measurements
86 I1 --- NRA Number of angular positions on RA of the
reception pattern at which the source was
observed
--------------------------------------------------------------------------------
Note on Name: the name includes the publication number (2,5,7,9,11),
"GRB" (the B indicates that 1950 positions are used in the name).
hours and minutes of RA(1950), and degrees of Declination(1950).
Up to 6 lines in file data.dat contain the experimental estimates
of the source coordinates and flux densities as well as their errors
at each operating frequency of the UTR-2.
--------------------------------------------------------------------------------
Global notes:
Note (G1): For original positions in B1950, the J2000 positions have been
calculated at CDS.
--------------------------------------------------------------------------------
Acknowledgements:
For any information concerning to the UTR-2 Very Low-Frequency Sky
Survey, please, contact to:
Dr. K.P. Sokolov
Institute of Rsdio Astronomy
4, Krasnoznamennaya Street
Kharkov 310002
UKRAINE
E-mail:rai@ira.kharkov.ua
FAX: 38 (0572) 47-65-06
Phone: 38 (0572) 45-10-14 (office), 38 0572-44-09-37 (home)
References:
Braude S.Ya. et al., Paper I., The UTR-2 Radio Telescope.
Experimental Techniques and Data Processing =1978Ap&SS..54....3B 1978Ap&SS..54....3B
Braude S.Ya. et al., Paper II, 10°<DE< 20° =1978Ap&SS..54...37B 1978Ap&SS..54...37B
Braude S.Ya. et al., Paper IV, Spectra =1978Ap&SS..54..145B 1978Ap&SS..54..145B
Braude S.Ya. et al., Paper V, 0°<DE< 10° =1979Ap&SS..64...73B 1979Ap&SS..64...73B
Braude S.Ya. et al., Paper VI, Spectra =1979Ap&SS..64..127B 1979Ap&SS..64..127B
Braude S.Ya. et al., Paper VII, -2°<DE←13° =1981Ap&SS..74..409B 1981Ap&SS..74..409B
Braude S.Ya. et al., Paper VIII, Spectra =1981Ap&SS..76..279B 1981Ap&SS..76..279B
Braude S.Ya. et al., Paper IX, 52°<DE< 60° =1985Ap&SS.111....1B 1985Ap&SS.111....1B
Braude S.Ya. et al., Paper X, Spectra =1985Ap&SS.111..237B 1985Ap&SS.111..237B
Braude S.Ya. et al., Paper XI, 41°<DE< 52° =1994Ap&SS.213....1B 1994Ap&SS.213....1B
Braude S.Ya. et al., Paper XII, Spectra =1995Ap&SS.226..245B 1995Ap&SS.226..245B
Braude S.Ya. et al., Paper XIIIa, 30°<DE< 40° =2003KFNT...19d.291B 2003KFNT...19d.291B
Braude S.Ya. et al., Paper XIIIb, Spectra =2003KFNT...19d.291B 2003KFNT...19d.291B
(End) Patricia Vannier [CDS] 22-May-2007