J/A+A/398/901 VLA survey at 6 cm in the Lockman Hole (Ciliegi+, 2003)
A deep VLA survey at 6 cm in the Lockman Hole.
Ciliegi P., Zamorani G., Hasinger G., Lehmann I., Szokoly G., Wilson G.
<Astron. Astrophys. 398, 901 (2003)>
=2003A&A...398..901C 2003A&A...398..901C
ADC_Keywords: X-ray sources ; Radio sources
Keywords: cosmology: observations - galaxies: general: starburst -
quasar: general
Description:
A deep radio image was obtained with the Very Large Array at 6cm in
the Lockman Hole, during three runs of eleven hours each on January
16, 17 and 19, 1999 at 4835 and 4885MHz with a bandwidth of 50MHz in C
configuration. From these data a catalogue of 63 radio sources was
extracted, having a maximum distance of 10arcmin from the field center
and a peak flux density greater than 4.5 times the local rms noise.
The noise level in the central part of the field is ∼11µJy.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 100 70 The 4.5σ radio sample
table3.dat 108 70 Optical, near infrared and 20cm counterparts
of the 6cm sources in the Lockman Hole
table4.dat 81 13 Radio/X-ray associations
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See also:
J/PASJ/53/445 : ASCA Deep survey in Lockman Hole Field (Ishisaki+, 2001)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- --- [LOCK_6 cm_]
11- 25 A15 --- [CZH2003] Radio source designation,
LOCK_6 cm_JHHMMSS+DDMMSSA
27- 31 F5.3 mJy Speak Peak flux density around 4860MHz
33- 37 F5.3 mJy e_Speak rms uncertainty on Speak
39- 44 F6.3 mJy Stot Total flux density around 4860MHz
46- 50 F5.3 mJy e_Stot rms uncertainty on Stot
52- 53 I2 h RAh Right ascension (J2000)
55- 56 I2 min RAm Right ascension (J2000)
58- 62 F5.2 s RAs Right ascension (J2000)
64 A1 --- DE- Declination sign (J2000)
65- 66 I2 deg DEd Declination (J2000)
68- 69 I2 arcmin DEm Declination (J2000)
71- 74 F4.1 arcsec DEs Declination (J2000)
76- 79 F4.2 arcsec e_RAs ? rms uncertainty on RA
81- 84 F4.2 arcsec e_DEs ? rms uncertainty on DE
86- 89 F4.1 arcsec thetaM ? FWHM of the non-deconvolved major axis
91- 93 F3.1 arcsec thetam ? FWHM of the non-deconvolved minor axis
95- 99 F5.1 deg PA [-90/90]? Position angle of the major axis,
measured east to north
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- --- [LOCK_6 cm_]
11- 25 A15 --- [CZH2003] Radio source designation,
LOCK_6 cm_JHHMMSS+DDMMSSA
27 A1 --- l_Vmag Limit flag on Vmag
28- 31 F4.1 mag Vmag V magnitude (1)
32 A1 --- n_Vmag [b] Note on Vmag (2)
34 A1 --- l_Imag Limit flag on Imag
35- 38 F4.1 mag Imag I magnitude (1)
40 A1 --- l_K'mag Limit flag on K'mag
41- 44 F4.1 mag K'mag ? K' magnitude (1)
46- 49 F4.2 arcsec Delta ? Error on optical position
51- 55 F5.2 arcsec DeltaRA ? Radio positional error in RA
57- 61 F5.2 arcsec DeltaDE ? Radio positional error in DE
63- 68 F6.2 --- LR ? Likelihood ratio (3)
70- 73 F4.2 --- Rel ? Reliability of the optical identification
75- 77 I3 --- N20cm ? Name of the 20cm counterpart
78 A1 --- n_N20cm [*] *: Sources that have more than one
component
80 A1 --- l_F20cm Limit flag on F20cm
81- 86 F6.3 mJy F20cm Radio flux at 20cm (1.4GHz)
88- 92 F5.3 mJy e_F20cm ? rms uncertainty on F20cm
94 A1 --- l_Sp-Index Limit flag on Sp-Index
95- 99 F5.2 --- Sp-Index Radio spectral index between 20 and 6cm
101-104 F4.2 --- e_Sp-Index ? rms uncertainty on Sp-Index
106-108 F3.1 arcsec Delta6-20 ? Dstance between the two radio positions
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Note (1): Magnitudes in all bands are Vega magnitudes.
Note (2): b: For this source the V magnitude is not available due to
a problem with the electronic readout in the CCD.
Note (3): defined as the ratio between the probability that the source
is the correct identification and the corresponding probability for a
background
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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 A1 --- n_[CZH2003] [N] N: New radio/X-ray associations found
with the XMM-Newton source list
3- 12 A10 --- --- [LOCK_6 cm_]
13- 27 A15 --- [CZH2003] Radio source designation,
LOCK_6 cm_JHHMMSS+DDMMSSA
29- 33 F5.2 mJy F6cm Radio flux at 6cm
35 A1 --- l_Sp-Index Limit flag on Sp-Index
36- 40 F5.2 --- Sp-Index Radio spectral index
(S∝ν-α)
43- 46 F4.1 mag Imag I magnitude
48- 51 F4.1 mag K'mag ? K' magnitude
53- 57 I5 --- Xname Name of the X-ray counterpart
59- 61 F3.1 arcsec DeltaR-X Distance between the radio and X-ray
positions
63- 66 F4.2 10-17W/m2 FX ROSAT-HRI 0.5-2.0keV flux of the X-ray
source (1)
68 I1 --- Type [1/3] Optical classification (2)
70- 74 F5.3 --- z Redshift
75 A1 --- n_z [b] b: note on redshift (3)
77- 81 F5.2 [W/Hz] LogL5GHz Radio luminosity at 5GHz
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Note (1): The ROSAT/X-ray data, including spectroscopic classification
and redshift are all taken from Lehmann et al. (2001, Cat.
J/A+A/371/833), except for the X-ray source 116 for which the
references are Hasinger et al. (1998A&A...329..482H 1998A&A...329..482H) and Lehmann et
al. (2000A&A...354...35L 2000A&A...354...35L). The XMM/X-ray data are from Lehmann et al.
(2003), 0109172, in preparation.
Note (2): Optical classification:
1: AGN
2: type II AGN
3: cluster
Note (3):
The sources J105237+573104T and J105238+573321, although with the same
redshift, are not members of the cluster at z=0.700 associated with
the radio source J105328+573535. However, these three radio/X-ray
sources suggest the presence of an overdensity extending over at least
a few Mpc at z∼0.7.
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History:
From electronic version of the journal
* 10-Jul-2003: RAh and RAs corrected in the last part of table1
(End) James Marcout, Patricia Bauer [CDS] 18-Mar-2003