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VIII/24 6C Survey of Radio Sources V (6CSRSV; Hales+ 1993)
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The 6C Survey of Radio Sources - V. The Zones 6C-Va (48 deg < Dec < 68 deg,
01h 34m < RA < 06h 14m., 6C-Vb (48 deg < Dec < 68 deg,
17h 16m < RA < 20h 24m)
Hales S.E.G., Masson C.R., Warner P.J., Baldwin J.E., Green D.A.
<Mon.Not.R.Astron.Soc., 262, 1057 (1993)>
=1993MNRAS.262.1057H
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ADC_Keywords: Radio sources; Surveys
Summary:
This catalog contains the fifth section of the 6C Cambridge survey of
radio sources at 151 MHz (6CV). This part of the survey covers two
regions: 48 deg < Dec < 68 deg, 01h 34m < RA < 06h 14m [6CVa] and
48 deg < Dec < 68 deg, 17h 16m < RA < 20h 24m [6CVb]. The limiting flux
density is generally 170 mJy. The catalog data include the source
positions (B1950), peak flux density, integrated flux density, contour
map panel number, contour map field names, and integrated flux flag.
The two regions together list a total of 3458 sources (2229 in 6CVa and
1229 sources in 6CVb). The 6CV catalog consists of two files: one file
contains the 6CVa, and the second file contains the 6CVb. records.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This File
6csrsva.dat 52 2229 The 6C Va catalog
6csrsvb.dat 52 1229 The 6C Vb catalog
6csrsv.tex 78 199 ADC Documentation
adc.sty 68 38 LateX Style File for ADC documentation
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Description:
"The 6C Survey of Radio Sources - V. The Zones 6C-Va
(48 deg < Dec < 68 deg, 01h 34m < RA < 06h 14m) and 6C-Vb
(48 deg < Dec < 68 deg, 17h 16m < RA < 20h 24m )" (6CV) contains a
compilation of radio source observations made with the use of an
(non-tracking) Earth-rotation aperture synthesis telescope comprising
many small aerial arrays on an east-west baseline operating at
151 MHz. This paper is the fifth in a series of papers giving radio
source observations at 151 MHz. See the discussion in 6CI (Baldwin et
al. 1985) for details on the design and operation of the telescope and
the initial generation of the survey. Other papers in this series
include 6CII (Hales et al. 1988), 6CIII (Hales et al. 1990), 6CIV
(Hales et al. 1991), and 6CVI (Hales et al. 1993b).
The 6CV catalog contains a total listing of 3458 radio sources ordered
by increasing right ascension. The survey is centered on a declination
of 58 deg to facilitate calibration using Cassiopeia A. The 6CVa covers
the region 48 deg < Dec < 68 deg , 01h 34m < RA < 06h 14m, and the
6CVb covers 48 deg < Dec < 68 deg , 17h 16m < RA < 20h 24m . Both of
the 6CV regions have some overlap in right ascension with the 6CIII
catalog so that 396 sources have alternative entries in both catalogs.
In addition, there is some overlap with the 6CIV paper in this series.
Positional calibration was effected as for 6CIII (Hales et al. 1990)
and give corrections of similar magnitude.
Flux densities are on the scale of Roger et al. (1973).
Provisional flux densities were corrected for the measured receiver
gain at a declination of 58 deg as a function of right ascension. The
final flux densities were adjusted to be consistent with published radio
source lists and were adjusted for consistency with overlapping regions
in the 6CIII, 6CIV, and the 6CVI catalogs. See 6CV for additional flux
calibration details.
Note that these two sections of the 6CV submitted to the ADC contain
only the listing of radio sources and not the radio maps. The radio
source lists are intended to be used with the radio maps originally
published on microfiche in Hales, Masson, Warner, Baldwin, and Green
(1993).
Structure:
The File as a Whole
"The 6C Survey of Radio Sources - V. The Zones 6C-Va (48 deg < Dec < 68
deg, 01h 34m < RA < 06h 14m) and 6C-Vb (48 deg < Dec < 68 deg, 17h 16m <
RA < 20h 24m)" consists of two fixed-block files. The 6CVa consists of
2229 52-byte records, and the 6CVb consists of 1229 52-byte records.
Descriptions of some of the fields in the file are given in the
following section. The record format is the same for the 6CVa and 6CVb.
Byte-by-byte Description of file: 6csrsva.dat, 6csrsvb.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Right ascension (B1950)
4- 5 I2 min RAm Right ascension (B1950)
7- 10 F4.1 s RAs Right ascension (B1950)
13- 14 I2 deg DEd Declination (B1950)
16- 17 I2 arcmin DEm Declination (B1950)
19- 20 I2 arcsec DEs Declination (B1950)
23- 27 F5.2 Jy PeakFlux *Flux density (peak)
30- 34 F5.2 Jy IntFlux *? Flux density (integrated)
37- 39 I3 --- map_num *Contour map panel number
42- 48 A7 --- field *Contour map field name
51 A1 --- n_IntFlux *Integrated_flux_flag
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Note on PeakFlux:
Flux density (peak): Source peak flux density at 151 MHz.
Note on IntFlux:
Flux density (integrated): Source integrated flux density at 151 MHz.
Note on map_num:
Contour map panel number: This column contains the name of the map
panel in which the source appears. The panel number and map field name
tell the user where to look up the source of interest in the published
contour map. Typically, each map is divided into 32 panels, although
the 0300+58 map contains panel numbers up to 36, presumably from an
adjoining region (see Figure 4 in 6CV). A panel number listed with a
negative sign indicates that the data are accommodated at the location
but come from another map or area of sky.
Note on field:
Contour map field names: This column contains the name of the
field in which the source appears. Three fields have been included
in this survey: 0300+58, 0500+58 for 6CVa and 1900+58 for 6CVb. The
panel number and map field name tell the user where to look
up the source of interest in the published contour map.
Note on n_IntFlux:
Integrated flux flag: A dash (-) indicates that the peak flux was not
strong enough to calculate the integrated flux. An asterisk (*)
indicates that the peak flux was strong enough to qualify for
integration, but it has been integrated into a brighter adjoining peak.
History:
Remarks and Modification
"The 6C Survey of Radio Sources - V. The Zones 6C-Va (48 deg < Dec < 68
deg, 01h 34m < RA < 06h 14m) and 6C-Vb (48 deg < Dec < 68 deg, 17h 16m <
RA < 20h 24m)" was received by the Astronomical Data Center (ADC), NASA
Goddard Space Flight Center, from Dr. Heinz Andernach. The catalog was
originally submitted by Dr. Sally Hales.
The integrated flux flag column was generated by the ADC by editing the
original integrated flux field and moving the character flags to a
separate column. This was done to avoid the mixing of characters and
numbers in a single field.
References:
Baldwin, J. E., Boysen, R. C., Hales, S. E. G., Jennings, J. E.,
Waggett, P. C., Warner, P. J., and Wilson, D. M. A. 1985,
MNRAS, 217, 717 =1985MNRAS.217..717B
Hales, S. E. G., Baldwin, J. E., and Warner, P. J. 1988, MNRAS, 234, 919
=1988MNRAS.234..919H
Hales, S. E. G., Masson, C. R., Warner, P. J., and Baldwin, J. E. 1990,
MNRAS, 246, 256 =1990MNRAS.246..256H
Hales, S. E. G., Mayer, C. J., Warner, P. J., and Baldwin, J. E. 1991,
MNRAS, 251, 46 =1991MNRAS.251...46H
Roger, R. S., Bridle, A. H., and Costain, C. H. 1973, AJ, 78, 1030
=1973AJ.....78.1030R
Hales, S. E. G., Masson, C. R., Warner, P. J., Baldwin, J. E., and
Green, D. A. 1993a, MNRAS, 262, 1057 =1993MNRAS.262.1057H
Hales, S. E. G., Baldwin, J. E., and Warner, P. J. 1993b, MNRAS, 263, 25
=1993MNRAS.263...25H
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(End) Nancy Oliversen and Paul Kuin (ADC) 11-May-1995