J/A+A/403/555 Interplanetary Scintillation Pushchino Survey (Artyukh+, 2003)
Investigation of radio sources from the Interplanetary Scintillation Pushchino
Survey. I. Cross-identification with the 7C and FIRST radio catalogues.
Artyukh V.S., Kopylov A.I., Kopylova F.G.
<Astron. Astrophys. 403, 555 (2003)>
=2003A&A...403..555A 2003A&A...403..555A
ADC_Keywords: QSOs ; Radio sources ; Cross identifications
Keywords: catalogs - radio continuum: galaxies - quasars: general
Abstract:
Interplanetary scintillating (IPS) radio sources from the Pushchino
Survey (PS) in the area of 0.11sr have been cross-identified with
objects from the 7C and FIRST catalogues. We have obtained improved
positions of IPS radio sources, which are necessary for their optical
identification. The data on sizes and morphology provided by the FIRST
catalogue have shown that more than 50% of IPS radio sources are
single and compact (<3") at ν=1400MHz. Most of them belong to the
class of compact steep spectrum radio sources. About 15% of IPS radio
sources are single partially resolved FIRST objects (sizes of 3"-9")
and another 11% are double radio sources with compact components. The
remaining 22% have larger sizes and, as a rule, a more complex
structure too. Because IPS sources certainly contain an appreciable
part of their radiation at low frequencies (100MHz) in very compact
(∼0.1") components and have steep spectra, we hope that a significant
part of the Pushchino Survey objects are very probable candidates for
steep spectrum quasars.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 70 260 7C counterparts for IPS radio sources
table2.dat 90 392 FIRST counterparts for IPS radio sources
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See also:
VIII/71 : The FIRST Survey Catalog, Version 03Apr11 (Becker+ 2003)
VIII/22 : 6C Survey of Radio Sources - III. (Hales+ 1990)
VIII/67 : Catalogue of scintillating radio sources (Artyukh+, 1996-98)
J/MNRAS/246/110 : 7C survey of radio sources at 151 MHz (McGilchrist+ 1990)
J/MNRAS/282/779 : 7C 151MHz survey of region 9-16h 20-35deg (Waldram+ 1996)
J/MNRAS/298/637 : 7C 151MHz survey of 3 regions (Pooley+, 1998)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh IPS radio source right ascension (1950)
4- 5 I2 min RAm IPS radio source right ascension (1950)
7- 8 I2 s RAs IPS radio source right ascension (1950)
10 A1 --- DE- IPS radio source declination (1950)
11- 12 I2 deg DEd IPS radio source declination (1950)
14- 15 I2 arcmin DEm IPS radio source declination (1950)
17- 20 F4.2 Jy S102MHz Flux density at 102MHz of IPS radio source
22- 24 I3 --- PS Name of the IPS radio source (1)
26 A1 --- C Rank in angular distance of a 7C counterpart
from the IPS radio source (G1)
28- 30 A3 --- Cat Designation of 7C catalogue used (2)
32- 33 I2 h RACh 7C source right ascension (1950)
35- 36 I2 min RACm 7C source right ascension (1950)
38- 43 F6.3 s RACs 7C source right ascension (1950)
45 A1 --- DEC- 7C source declination (1950)
46- 47 I2 deg DECd 7C source declination (1950)
49- 50 I2 arcmin DECm 7C source declination (1950)
52- 56 F5.2 arcsec DECs 7C source declination (1950)
58- 63 F6.3 Jy S151MHz Integrated flux density at 151MHz from
the 7C catalog
65- 70 F6.1 arcsec dR Angular distance of a 7C radio source from
the IPS radio source position
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Note (1): Name corresponding to its sequential number in the original
catalog (Artyukh et al., 1998, Cat. VIII/67)
Note (2): 7C catalogs:
7C (McGillchrist et al., 1990, Cat. J/MNRAS/246/110)
7C4 (Waldram et al., 1996, Cat. J/MNRAS/282/779)
7C5 (Pooley et al., 1998, Cat. J/MNRAS/298/637)
7Cn (Riley et al., 1999MNRAS.306...31R 1999MNRAS.306...31R)
for the object PS159a the data were taken from the 6CIII catalogue
(Hales et al., 1990, Cat. VIII/22)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- PS IPS number
5 A1 --- C Rank of the 7C counterpart (G1)
7 I1 --- nFIRST Number of the FIRST radio source component
9- 15 F7.3 arcsec dr Radial angular distance of the FIRST radio
source to the 7C radio source
17- 22 F6.2 arcsec dRA Angular distance along RA direction of the
FIRST radio source to the 7C radio source
24- 30 F7.2 arcsec dDE Angular distance along DE direction of the
FIRST radio source to the 7C radio source
32- 33 I2 h RAh FIRST radio source right ascension (1950)
35- 36 I2 min RAm FIRST radio source right ascension (1950)
38- 42 F5.2 s RAs FIRST radio source right ascension (1950)
44 A1 --- DE- FIRST radio source declination sign (1950)
45- 46 I2 deg DEd FIRST radio source declination (1950)
48- 49 I2 arcmin DEm FIRST radio source declination (1950)
51- 54 F4.1 arcsec DEs FIRST radio source declination (1950)
56- 63 F8.2 mJy Speak FIRST peak integrated flux density at 1400MHz
(in mJy/beam)
65- 71 F7.2 mJy S1400MHz FIRST integrated flux density at 1400MHz
74- 78 F5.2 arcsec MajAxis Deconvolved major axis (FWHM in arcsec)
80- 84 F5.2 arcsec MinAxis Deconvolved minor axis (FWHM in arcsec)
86- 90 F5.1 deg PA Position angle
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Global notes:
Note (G1): Rank in angular distance code:
a, b, c, d, e, f - distance rank for objects within 15'
u - unique object within 15' circle
S, E, W - rough direction for objects outside 15' circle)
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History:
From electronic version of the journal
(End) Patricia Bauer [CDS] 12-Jun-2003