J/MNRAS/383/75 Deep 610MHz survey of ELAIS-N1 sources (Garn+, 2008)
A 610-MHz survey of the ELAIS-N1 field with the Giant Metrewave Radio Telescope.
Observations, data analysis and source catalogue.
Garn T., Green D.A., Riley J.M., Alexander P.
<Mon. Not. R. Astron. Soc. 383, 75 (2008)>
=2008MNRAS.383...75G 2008MNRAS.383...75G
ADC_Keywords: Radio sources ; Surveys
Keywords: surveys - catalogues - radio continuum: galaxies
Description:
Observations of the ELAIS-N1 field taken at 610MHz with the Giant
Metrewave Radio Telescope are presented. Nineteen pointings were
observed, covering a total area of 9 square degrees with a resolution
of 6x5arcsec2, PA=45deg. Four of the pointings were deep
observations with an rms of ∼40uJy before primary beam correction,
with the remaining fifteen pointings having an rms of ∼70uJy. The
techniques used for data reduction and production of a mosaicked image
of the region are described, and the final mosaic, along with a
catalogue of 2500 sources detected above 6σ, are presented. This
work complements the large amount of optical and infrared data already
available on the region.
For further details of the surveys and data analysis procedures please
refer to the published paper.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 89 2500 GMRT EN1 sourcelist of 2500 sources
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See also:
II/255 : SWIRE ELAIS N1 Source Catalogs (Surace+, 2004)
J/AJ/129/1198 : SDSS quasars in SWIRE ELAIS N1 field (Hatziminaoglou+, 2005)
J/MNRAS/358/333 : ELAIS optical ID at 15um + 1.4GHz (Gonzalez-Solares+, 2005)
J/MNRAS/371/1891 : GOODS ELAIS-N1 24um flux densities (Rodighiero+, 2006)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- --- [GMRTEN1_]
9- 24 A16 --- GMRTEN1 IAU designation of source (JHHMMSS.s+DDMMSS)
26- 27 I2 h RAh Centroid position right ascension J2000
29- 30 I2 min RAm Centroid position right ascension J2000
32- 36 F5.2 s RAs Centroid position right ascension J2000
38 A1 - DE- Centroid position declination (sign)
39- 40 I2 deg DEd Centroid position declination J2000
42- 43 I2 arcmin DEm Centroid position declination J2000
45- 48 F4.1 arcsec DEs Centroid position declination J2000
50- 56 F7.3 mJy S Peak pixel brightness (in mJy/beam)
58- 61 I4 uJy Noise Local rms noise (in uJy/beam)
63- 70 F8.3 mJy Sint Integrated flux at 610MHz
72- 77 F6.3 mJy e_Sint Error on integrated flux
79- 82 I4 --- Xpos Centroid X pixel location (nearest pixel)
84- 87 I4 --- Ypos Centroid Y pixel location (nearest pixel)
89 I1 --- Flags [0/3] Source SExtractor flags (1)
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Note (1): Source SExtractor flags as follows:
1 = where a nearby bright source may be affecting the calculated flux
2 = where a source has been deblended into two or more components
from a single initial island of flux
3 = when both 1 and 2 apply
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Acknowledgements:
Timothy Garn, tsg25(at)cam.ac.uk
(End) Timothy Garn [MRAO], Patricia Vannier [CDS] 11-Oct-2007