J/AJ/90/1437 Active Extragalactic Objects III (Coleman+ 1985)
Complete samples of active extragalactic objects. III.
A 1411 MHz VLA survey.
Coleman P.H., Condon J.J., Hazard C.
<Astron. J. 90, 1437 (1985)>
=1985AJ.....90.1437C 1985AJ.....90.1437C (SIMBAD/NED BibCode)
ADC_Keywords: Radio sources
Abstract:
Three selected fields were observed with the Very Large Array (VLA) at
1411MHz as part of an ongoing project to compile complete samples of
active extragalactic objects. The radio-source list for the field "A"
centered on alpha=08h54m, delta=+17d30' is presented. 67 maps cover
the area 3x3deg so that every point lies within at least one primary
half-power beamwidth. The median map noise is 0.5mJy and the 6σ
completeness level is less than 6mJy over half the field. The
synthesized point-source response is an elliptical Gaussian
approximately 20x17" between half-intensity points. The areal density
of sources with flux densities in the range 5<S<150mJy was determined.
Optical identifications based on position coincidences with 90 objects
brighter than B≃21.5 in the A and B survey fields are reported.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 81 208 List of radio sources
table4.dat 45 97 Optical identifications
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See also:
J/AJ/87/739 : Active Extragalactic Objects I. (Condon+ 1982)
J/AJ/87/1429 : Active Extragalactic Objects II (Condon+ 1982)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Source name
12- 13 I2 h RAh Right Ascension 1950 (hours)
14- 15 I2 min RAm Right Ascension 1950 (minutes)
16- 20 F5.2 s RAs Right Ascension 1950 (seconds)
22- 24 F3.2 s e_RAs Mean error on RAs
26 A1 --- DE- Declination 1950 (sign)
27- 28 I2 deg DEd Declination 1950 (degrees)
29- 30 I2 arcmin DEm Declination 1950 (minutes)
31- 34 F4.1 arcsec DEs Declination 1950 (seconds)
36- 38 F3.1 arcsec e_DEs Mean error on DEs
40- 44 F5.1 mJy S1411MHz Integrated Flux Density
46- 49 F4.1 mJy e_S1411MHz Mean error on S1411MHz
51- 52 I2 arcsec MajAxis ? Half-intensity major axis
54- 55 I2 arcsec MinAxis ? Half-intensity minor axis
57- 59 I3 deg PA ? MajAxis position angle
61- 64 F4.2 --- f Integrated attenuation factor
66- 69 F4.2 --- fp Peak attenuation factor
71- 75 F5.1 mJy mapSp Map Peak flux density
77- 81 A5 --- Map Map designation (parameters in table1 of
paper)
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Source name, as in tabl2
14- 15 A2 --- IDdir *[GS?: ] Identification by direct observation
19- 22 A4 --- IDop *[GS?:QO ] Identification by objective prism
24- 27 F4.1 mag Bmag ? Blue magnitude determined by the APM
28 A1 --- u_Bmag Uncertainty flag (:) on Bmag
30- 34 F5.2 s dRA Offset in Right Ascension
36- 40 F5.1 arcsec dDE Offset in Declination
42- 45 F4.1 --- m *Normalized position difference
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Note on IDdir, IDop: the symbols are
G = Galaxy ; S = star-like object ; QSO = quasar
? = object of unknown nature
Note on m: difference between optical and radio positions divided by the
errors in each; see Mitchell et al. (1981PASP...93..647M 1981PASP...93..647M)
for details on m definitions and statistics.
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Acknowledgements:
We thank Heinz Andernach who scanned and
proofread the tables (numbered R196 in his archive)
(End) Francois Ochsenbein [CDS] 13-Feb-1997