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J/MNRAS/329/700 Optical IDs of JVAS using APM (Snellen+ 2002)
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Automated optical identification of a large complete northern hemisphere sample
of flat-spectrum radio sources with S_6cm_>200mJy
Snellen I.A.G., McMahon R.G., Hook I.M., Browne I.W.A.
<Mon. Not. R. Astron. Soc. 329, 700 (2002)>
=2002MNRAS.329..700S
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ADC_Keywords: Radio sources ; Radio continuum ; Magnitudes ; Galaxies, optical ;
Galaxies, radio ; Cross identifications
Keywords: surveys - galaxies: active - quasars: general -
radio continuum: galaxies
Description:
Files list1, list2, and list3 contain the lists of flat spectrum radio
sources with their optical identifications from the APM (Automated
Plate Measurement Facility at Cambridge) catalogue. List1 corresponds
to the sources which are part of both the complete JVAS++ (a new
complete sample constructed with selection criteria similar to those
of JVAS -- Jodrell Bank VLA Astrometric Survey: S_5GHz_>200mJy,
{alpha{_1.4-5GHz_>-0.5), and with the use of the more accurate GB6 and
NVSS surveys) and original JVAS sample, List2 corresponds to sources
which are only part of JVAS++, and List3 to sources which are only
part of JVAS. The combination of List1 and List2 is a complete sample
with S_6cm>200 mJy.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list1.dat 140 762 APM IDs of sources in JVAS++ and JVAS
list2.dat 144 153 APM IDs of sources in JVAS++ only
list3.dat 140 370 APM IDs of sources in JVAS only
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See also:
I/267 : The APM-North Catalogue (McMahon+, 2000)
VIII/6 : 1400-MHz Sky Survey, Maps Covering Dec -5 to +82 (Condon+ 1985-86)
VIII/14 : 87GB Catalog of radio sources (Gregory+, 1991)
VIII/17 : The 1.4GHz Northern Sky Survey (White+. 1992)
VIII/40 : GB6 catalog of radio sources (Gregory+ 1996)
VIII/53 : The Green Bank Survey (Maslowski+ 1972-87)
VIII/59 : the FIRST Survey, version 1999Jul (White+ 1999)
VIII/60 : Interferometer phase calibration sources (Patnaik+ 1998)
http://www.ast.cam.ac.uk/~apmcat : APM cat home page
Byte-by-byte Description of file: list1.dat, list2.dat, list3.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Name of the source (1)
14- 15 I2 h RAh Radio right ascension (2000.0)
17- 18 I2 min RAm Radio right ascension (2000.0)
20- 26 F7.4 s RAs Radio right ascension (2000.0)
28 A1 --- DE- Radio declination sign (2000.0)
29- 30 I2 deg DEd Radio declination (2000.0)
32- 33 I2 arcmin DEm Radio declination (2000.0)
35- 39 F5.2 arcsec DEs Radio declination (2000.0)
41- 46 F6.2 arcsec oRA ? RA radio-optical offset
48- 53 F6.2 arcsec oDE ? DE radio-optical offset
55- 60 F6.2 arcsec Delta ? Total radio-optical offset
62- 65 F4.1 --- LHR ? Logarithm of likelihood ratio
67 A1 --- l_Emag Limit flag on Emag (red plate)
68- 72 F5.2 mag Emag ? E band magnitude
74- 75 I2 --- EClass [-1/2]? E class (2)
77- 80 F4.1 --- Epsf ? Statististical deviation from PSF in E band
81 A1 --- l_Omag Limit flag on Omag (blue plate)
82- 87 F6.2 mag Omag ? O band magnitude
89- 90 I2 --- OClass [-1/2]? O class (2)
93- 97 F5.1 --- Opsf ? Statististical deviation from PSF in O band
99 A1 --- l_O-E Limit flag on O-E
100-105 F6.2 mag O-E ? O-E colour
107-111 I5 mJy S5GHz ? GB6 5 GHz flux density (Gregory et al.,
1996, Cat. <VIII/40>)
113-117 I5 mJy S1.4GHzN ? NVSS 1.4 GHz flux density
(Condon et al., 1998AJ....115.1693C)
119-123 I5 mJy S1.4GHzG ? Greenbank 1.4 GHz flux density
(White & Becker, 1992, Cat. <VIII/17>)
125-129 I5 mJy S8.4GHz ? VLA 8.4 GHz flux density
131-136 F6.4 --- z ? Redshift
138-144 A7 --- comm Comments (3)
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Note (1): Name of the sources:
JVShhmm+ddmm: JVAS designation, JVAS JHHMM+DDMM in Simbad
CLShhmm+ddmm: CLASS designation, CLASS JHHMM+DDMM in Simbad
Note (2): APM classification:
-1: stellar
1: extended
2: merged
Note (3): For the comments, the following code is used:
a: Blended Object
b: Bright Galaxy
c: Possible ID on DSS?
d: Group/Cluster?
e: Bright Star nearby
f: ID not Possible
g: wrong representation in APM
h: Possible Blended Object?
i: ID is Correct
j: Offset in Red Plate
k: Blended Object in Blue
l: Blended Object in Red
m: Red and Blue APM are shifted
n: Bright Galaxy Nearby
o: DSS not Uniform
p: NVSS extended
q: NVSS several components
r: NVSS Wide angle tail
s: NVSS Double
t: NVSS triple
u: Radio Source is Lobe
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Acknowledgements: I. Snellen <ignas@roe.ac.uk>
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(End) Patricia Bauer [CDS] 30-Jan-2002