J/A+AS/73/103 The 64W part of the WRST Survey (Oort+, 1988)
A deep 92cm survey of the Lynx area.
Oort M.J.A., Steemers W.J.G., Windhorst R.A.
<Astron. Astrophys. Suppl. Ser. 73, 103 (1988)>
=1988A&AS...73..103O 1988A&AS...73..103O
ADC_Keywords: Radio sources
Keywords: cosmology - galaxies: radio - radio sources: general
Abstract:
We present a deep 92cm survey down to 4.5mJy (5σ) carried out
with the Westerbork Synthesis Radio Telescope (WSRT) of a field in
Lynx, previously observed at three other radio frequencies: 6, 21, and
49cm. The observations, totalising 4*12h were made in the redundancy
mode, which makes it possible to achieve a high dynamic range. In
total, 384 sources above a 5σ peak flux limit were detected, of
which 337 form a complete sample.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 118 407 The source list for the complete sample
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See also:
VIII/62 : The Westerbork Northern Sky Survey (Leiden, 1998)
J/A+A/35/393 : Westerbork Second Deep Survey (Katgert, 1974)
J/A+AS/58/1 : 1412 MHz catalogue of Westerbork survey. I. (Windhorst+ 1984)
J/A+A/58/39 : 1412 MHz catalogue of Westerbork survey. II. (Windhorst+ 1984)
J/A+AS/124/259 : Westerbork Northern Sky Survey I. (Rengelink+ 1997)
J/A+AS/71/221 : The 65W part of the WRST 21cm survey in Lynx (Oort+, 1988)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- 64W Source name following the Westerbork
convention (1)
7 A1 --- m_64W [AB*] Multiplicity index on 64W (1)
9- 10 I2 h RAh Right Ascension B1950 (hours)
11- 12 I2 min RAm Right Ascension B1950 (minutes)
13- 17 F5.2 s RAs Right Ascension B1950 (seconds)
19- 22 F4.2 s e_RAs Mean error on RA (2)
24 A1 --- DE- Declination B1950 (sign)
25- 26 I2 deg DEd Declination B1950 (degrees)
27- 28 I2 arcmin DEm Declination B1950 (minutes)
29- 32 F4.1 arcsec DEs Declination B1950 (seconds)
34- 37 F4.1 arcsec e_DEs Mean error on Declination (2)
40- 46 F7.2 mJy S327MHz Total flux density at 62cm (327MHz),
corrected for primary beam attenuation and
noise induced flux overestimation.
47- 52 F6.2 mJy e_S327MHz Mean error on S327MHz (2)
54 A1 --- f_64W [URE] Resolution code (3)
56- 60 F5.1 arcsec psi ? The largest angular size psi (4)
62- 65 F4.1 arcsec e_psi ? Mean error on psi (2)
67- 69 I3 deg PApsi ? The position angle phi of the major axis,
measured from North to East.
71- 72 I2 deg e_PApsi ? Mean error on PApsi (2)
74- 80 F7.2 --- Sp/N The peak flux signal-to-noise ratio.
82- 86 F5.2 --- R Normalized source area (5)
88- 93 F6.3 --- Att The attenuation factor at the position of
the source
94 A1 --- f_Att [*] not part of the complete sample (8)
95-100 F6.3 --- w_64W ? Weight of the source in the source counts.
102-109 A8 --- Aname Alternative name (at another frequency),
from a previous catalogue (7)
110 A1 --- n_Aname2 [+] Sources separated by a "+" form together
the 92cm source
111-116 A6 --- Aname2 Second source name, for 92cm source
117 A1 --- n_Aname [*] indicates multiple components in Aname
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Note (1): The source name following the Westerbork convention.
The Westerbork survey number (64W) followed by a sequence number in
order of increasing right ascension. Multi-component or complex
sources are designated by an asterisk behind its Westerbork name. Each
component is listed directly below, labeled A, B, C... in order of
right ascension. Any central component is always labeled "C".
Note (2): All parameters have their 1 sigma errors listed directly below
them (to the right in the 1 line/source version). Errors in position
and flux were calculated using the following relations:
(e_RA/DE)2= (NR/Sp)2 * CpRA/DE2 + Cra/de2
(e_Ssyst)2= Stot2[(N/Sp)2+Fo2+(Δρ*Δτ2]
using the values for the constants found for 21cm WSRT observations
by Oort and Windhorst (1985) scaled to the 92cm beam:
CpRA=CpDE= 0.5 HPBW, Cra = 0.04 HPBW, Cde = 0.03 HPBW, Fo = 0.03,
Δτ=dATT(r)/dr, and Δρ=0.006°
Note (3): Resolution code:
U = unresolved
R = resolved
E = multi component
Note (4): For resolved sources, the angular size from the deconvolved
major axis. For extended sources, the distance between the centers
of the two outermost components.
Note (5): R is defined as, R =(asou*bsou)/(aapt*bapt), where
asou and bsou are the major and minor half widths of the source,
and aapt and bapt of the antenna pattern.
Note (7): Catalogues (at 1412MHz=21cm, except 4C at 178MHz=1.68m):
55Wxxx: LBDS, Windhorst et al. (1984, Cat. J/A+AS/58/1) WSTB 55W NNA
OJxxx : Brundage et al. (1971AJ.....76..777B 1971AJ.....76..777B)
60Wxxx: Oort and Windhorst (1985A&A...145..405O 1985A&A...145..405O) 60W NNN
65Wxxx: Oort (1987, Cat. J/A+AS/71/221) WSTB 65W NNN
4Cxxx : Gower et al. 1967, Cat. VIII/4 (178MHz) 4C DD.NNNN
Note (8): In order to avoid very large uncertainties caused by attenuation
of the beam, the area of the complete sample is limited to a radius
where the attenuation is a factor 5, r=1.8965°. Sources lying
outside this radius are marked by an asterisk.
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Acknowledgements:
We thank Heinz Andernach who originally prepared
the catalogue (numbered R185 in his list)
(End) Francois Ochsenbein [CDS] 03-Aug-2001