ACDS V10.0 - Thu Dec 21 16:22:43 CET 2023
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Detailed Description of VIII/69A :
The WISH catalogue at 352 MHz (de Breuck+ 2002)
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Note : this is the description file of the original catalog.
This HTML page corresponds well to the original description, but some minor
changes in the format may have been introduced in the FITS output
files in order to allow for arithmetic operations on quantities
such as coordinates and times. h:m:s and d:m:s units are normally
converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the
units; the value given in the HTML files supersedes the value indicated in the ReadMe
file for this catalogue.
VIII/69A The WISH catalogue at 352 MHz (de Breuck+ 2002)
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The Westerbork in the Southern Hemisphere 9WISH) Survey
De Breuck C., Tang Y., de Bruyn A.G., Rottgering H., van Breugel W.
<Astron. Astrophys. 394, 59 (2002)>
=2002A&A...394...59D
================================================================================
ADC_Keywords: Radio sources ; Surveys
Keywords: surveys - radio continuum: general - radio continuum: galaxies -
galaxies: active
Description:
The Westerbork In the Southern Hemishpere (WISH) is a low-frequency
(352MHz) radio survey that covers most of the sky between -25 and -15
degrees (1.60sr) at a wavelength of 92cm to a limiting flux density of
approximately 18mJy (5sigma).
Due to the very low elevation of the observations, the survey has a
much lower resolution in declination than in right ascension
(54"x54"cosec{delta}). A correlation with the 1.4GHz NVSS (VIII/65)
shows that the positional accuracy is less constrained in declination
than in right ascension, but there is no significant systematic error.
The correlation with the NVSS was also used to construct a sample of
faint Ultra Steep Spectrum sources (file uss.dat, table 2 of the
paper). This sample is aimed at increasing the number of known high
redshift radio galaxies to allow detailed follow-up studies of these
massive galaxies and their environments in the early Universe.
WISH is a collaboration between the Netherlands Foundation for
Research in Astronomy (NFRA/ASTRON) and the Leiden Observatory. Carlos
De Breuck, Yuan Tang, Ger de Bruyn, Huub Rottgering, Wil van Breugel,
and Roeland Rengelink. For more information, see the WENSS home page
at http://www.strw.leidenuniv.nl/wenss/
or contact wenss.people@strw.leidenuniv.nl
File Summary:
FileName Lrecl Records Explanations
× 80 . This file
× ReadMe 80 . This file
× wish11.dat 114 90357 The WISH (v1.1) Catalogue
× uss.dat 120 154 Ultra Steep Spectrum sources (table2 of paper)
See also:
http://www.strw.leidenuniv.nl/wenss/ : WENSS and WISH home page
VIII/62 : The Westerbork Northern Sky Survey (Leiden, 1998)
VIII/65 : The NRAO VLA Sky Survey (NVSS) (Condon+ 1998)
Byte-by-byte Description of file: wish11.dat
Bytes Format Units Label Explanations
1- 3 A3 --- --- [WNB]
4- 15 A12 --- WNB Source name based on B1950 (1)
16 A1 --- m_WNB Multiplicity on WNB name (1)
18- 19 I2 h RA1950h Right Ascension B1950 (hours)
21- 22 I2 min RA1950m Right Ascension B1950 (minutes)
24- 28 F5.2 s RA1950s [0,60] Right Ascension B1950 (seconds)
30 A1 --- DE1950- Declination B1950 (sign)
31- 32 I2 deg DE1950d Declination B1950 (degrees)
34- 35 I2 arcmin DE1950m Declination B1950 (minutes)
37- 40 F4.1 arcsec DE1950s [0,60] Declination B1950 (seconds)
43- 44 I2 h RAh Right Ascension J2000 (hours)
46- 47 I2 min RAm Right Ascension J2000 (minutes)
49- 53 F5.2 s RAs [0,60] Right Ascension J2000 (seconds)
55 A1 --- DE- Declination J2000 (sign)
56- 57 I2 deg DEd Declination J2000 (degrees)
59- 60 I2 arcmin DEm Declination J2000 (minutes)
62- 65 F4.1 arcsec DEs [0,60] Declination J2000 (seconds)
68 A1 --- type [SCME] Source type (2)
70 A1 --- f_WNB [*] problems in fitting the source. (3)
73- 78 I6 mJy S The peak flux density at 352MHz in mJy/beam.
81- 86 I6 mJy SI The integrated flux density at 352MHz in mJy.
88- 91 I4 arcsec bMax The major axis
93- 95 I3 arcsec bMin The minor axis
97- 99 I3 deg PA The position angle
101-104 F4.1 mJy Nse the local rms-noise level in mJy/beam
106-114 A9 --- Frame The frame from which the source was obtained
Note (1): some sources are listed twice, if they have been observed in
different fields. The double entries provide variability information.
Some double entries in the same field are however due to problems in
the source fitting algorithm, and are marked with a '*' in the Flags
column (see column f_WNB).
Note (2): the type is:
S = Single component source.
M = Multicomponent source.
C = Component of a multicomponent source.
E = Extended source (more than four components).
Note (3): in case of problems in fitting the source, the
source parameters were obtained using 'aperture' integration.
Byte-by-byte Description of file: uss.dat
Bytes Format Units Label Explanations
1- 4 A4 --- --- [WN J]
5- 13 A9 --- WNJ Name of the source, based on J2000 position
15- 18 I4 mJy S352MHz 352 MHz flux density
20- 22 I3 mJy e_S352MHz Uncertainty in 352 MHz flux density
24- 28 F5.1 mJy S1400MHz 1400 MHz flux density
30- 33 F4.1 mJy e_S1400MHz Uncertainty in 1400 MHz flux density
35- 39 F5.2 --- Sp-Index Spectral index 352-1400
41- 44 F4.2 --- e_Sp-Index Error in spectral index 352-1400
46- 47 I2 h RAh Right ascension (J2000.0)
49- 50 I2 min RAm Right ascension (J2000.0)
52- 56 F5.2 s RAs Right ascension (J2000.0)
58 A1 --- DE- Declination sign
59- 60 I2 deg DEd Declination (J2000.0)
62- 63 I2 arcmin DEm Declination (J2000.0)
65- 68 F4.1 arcsec DEs Declination (J2000.0)
70- 75 F6.4 --- z ? Redshift
77- 81 A5 --- ID Identification of filter or survey (1)
83-120 A38 --- Ref Reference
Note (1): For the ID, we provide either the name of the large sky survey,
or the filter of literature observations.
History:
* 16-Dec-2002: Prepared by Carlos De Breuck [Leiden Obs.]
* 14-May-2004: the column m_WNB was added to distinguish between
the sources sharing the same name. Four designations which were
in error were corrected:
WNB0855.0-2103 (was WNB 0855-21033)
WNB1440.4-1939 (was WNB 1440-19395)
WNB1621.2-2427 (was WNB 1621-24278)
WNB2139.6-1208 (was WNB 2139-12084)
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(End) Carlos De Breuck [Leiden Obs.], Francois Ochsenbein [CDS] 14-May-2004