J/MNRAS/317/801 LBDS Hercules sample griJHK photometry (Waddington+, 2000)
The LBDS Hercules sample of mJy radio sources at 1.4GHz -
I. Multicolour photometry.
Waddington I., Windhorst R.A., Dunlop J.S., Koo D.C., Peacock J.A.
<Mon. Not. R. Astron. Soc. 317, 801 (2000)>
=2000MNRAS.317..801W 2000MNRAS.317..801W
ADC_Keywords: Galaxies, radio ; Photometry, ugriz ; Photometry, infrared
Keywords: galaxies: active - galaxies: photometry - quasars: general -
radio continuum: galaxies
Abstract:
The results are presented of an extensive programme of optical
and infrared imaging of radio sources in a complete subsample
of the Leiden-Berkeley Deep Survey. The LBDS Hercules sample consists
of 72 sources observed at 1.4GHz, with flux densities S1.4≥1.0mJy,
in a 1.2deg2 region of Hercules. This sample is almost completely
identified in the g, r, i and K bands, with some additional data
available at J and H. The magnitude distributions peak at r∼22mag,
K∼6mag and extend down to r∼26mag, K∼21mag. The K-band magnitude
distributions for the radio galaxies and quasars are compared with
those of other radio surveys. At S1.4GHz≲1Jy, the K-band
distribution does not change significantly with radio flux density.
The sources span a broad range of colours, with several being
extremely red (r-K≳6). Though small, this is the most optically
complete sample of mJy radio sources available at 1.4GHz, and is
ideally suited for studying the evolution of the radio luminosity
function out to high redshifts.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 111 72 LBDS Hercules sample - radio data
table3.dat 141 72 LBDS Hercules sample - optical & infrared data
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See also:
J/A+AS/58/1 : 1412 MHz catalogue of Westerbork survey I. (Windhorst+, 1984)
J/A+AS/58/39 : 1412 MHz catalogue of Westerbork survey II (Windhorst+, 1984)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- WSTB Object designation (53WNNN)
7 A1 --- m_WSTB [AB] Multiplicity index on WSTB
8- 9 A2 --- n_WSTB [* +] Note on WSTB (1)
11- 12 I2 h RA1h Right ascension (1950)
14- 15 I2 min RA1m Right ascension (1950)
17- 20 F4.1 s RA1s Right ascension (1950)
22 A1 --- DE1- Declination sign (1950)
23- 24 I2 deg DE1d Declination (1950)
26- 27 I2 arcmin DE1m Declination (1950)
29- 30 I2 arcsec DE1s Declination (1950)
33- 34 I2 h RAh Right ascension (J2000)
36- 37 I2 min RAm Right ascension (J2000)
39- 43 F5.2 s RAs Right ascension (J2000)
45 A1 --- DE- Declination sign (J2000)
46- 47 I2 deg DEd Declination (J2000)
49- 50 I2 arcmin DEm Declination (J2000)
52- 56 F5.2 arcsec DEs Declination (J2000)
57- 61 F5.1 mJy S1.4GHz Flux density at 1.4GHz
63- 66 F4.1 mJy e_S1.4GHz rms uncertainty on S1.4GHz
68 A1 --- l_S0.6GHz Limit flag on S0.6GHz
69- 73 F5.1 mJy S0.6GHz Flux density at 0.6GHz
75- 78 F4.1 mJy e_S0.6GHz ? rms uncertainty on S0.6GHz
80 A1 --- l_Sp-Index Limit flag on Sp-Index
81- 85 F5.2 --- Sp-Index Spectral index 1.4 to 0.6
87- 89 F3.2 --- e_Sp-Index ? rms uncertainty on Sp-Index
91 A1 --- Res [URE] Resolution source flag
(U: unresolved, R: resolved, E: extended)
93 A1 --- l_LAS Limit flag on LAS
94- 97 F4.1 arcsec LAS Largest angular size
99-101 F3.1 arcsec e_LAS ? rms uncertainty on LAS
103-105 I3 deg PA Position angle of the largest angular size,
east of north
107-111 F5.2 --- W Weigh of the source
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Note (1): Notes:
* The source has multiple radio components - the coordinates
correspond to the average position of all the components.
+ WSRT data only (Windhorst et al., 1984, Cat. J/A+AS/58/1)
all other sources have VLA positions and morphologies
(Oort, 1987A&A...179...41O 1987A&A...179...41O, Oort, 1988A&A...193....5O 1988A&A...193....5O).
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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- 6 A6 --- WSTB Object designation (53WNNN, 54WNNN)
7 A1 --- m_WSTB [AB] Multiplicity index on WSTB
8 A1 --- n_WSTB [+#] Note on coordinates and gri magnitudes (1)
10- 11 I2 h RA1h ? Right ascension (1950)
13- 14 I2 min RA1m ? Right ascension (1950)
16- 19 F4.1 s RA1s ? Right ascension (1950)
21 A1 --- DE1- Declination sign (1950)
22- 23 I2 deg DE1d ? Declination (1950)
25- 26 I2 arcmin DE1m ? Declination (1950)
28- 29 I2 arcsec DE1s ? Declination (1950)
32- 33 I2 h RAh ? Right ascension (J2000)
35- 36 I2 min RAm ? Right ascension (J2000)
38- 42 F5.2 s RAs ? Right ascension (J2000)
44 A1 --- DE- Declination sign (J2000)
45- 46 I2 deg DEd ? Declination (J2000)
48- 49 I2 arcmin DEm ? Declination (J2000)
51- 54 F4.1 arcsec DEs ? Declination (J2000)
56- 60 F5.3 --- z ? Redshift
63 A1 --- Type [GQ] Type of object (G: Galaxy, Q: QSO) (2)
64 A1 --- u_Type [?] Uncertainty flag on Type
66- 70 F5.2 mag gmag ? g magnitude (from photographic magnitudes) (1)
72- 74 F3.2 mag e_gmag ? rms uncertainty on gmag
76 A1 --- l_rmag Limit flag on rmag
77- 81 F5.2 mag rmag ? r magnitude (from photographic magnitudes) (1)
83- 85 F3.2 mag e_rmag ? rms uncertainty on rmag
88- 92 F5.2 mag imag ? i magnitude (from photographic magnitudes) (1)
94- 96 F3.2 mag e_imag ? rms uncertainty on imag
99-103 F5.2 mag Jmag ? J magnitude
105-107 F3.2 mag e_Jmag ? rms uncertainty on Jmag
109 A1 --- l_Hmag Limit flag on Hmag
110-114 F5.2 mag Hmag ? H magnitude
116-118 F3.2 mag e_Hmag ? Hmag uncertainty on Hmag
120 A1 --- l_Kmag Limit flag on Kmag
121-125 F5.2 mag Kmag ? K magnitude
127-129 F3.2 mag e_Kmag ? rms uncertainty on Kmag
131-150 A20 --- Ref References (3)
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Note (1): Notes:
+ Coordinates are taken from Windhorst et al. (1984,
Cat. J/A+AS/58/39) and converted to a J2000 equinox.
Photometry is taken from Kron et al. (1985A&A...146...38K 1985A&A...146...38K) and
transformed from J+F+N^+ data using equations (7)-(9)
# g and i photometry is taken from Kron et al. (1985A&A...146...38K 1985A&A...146...38K)
and transformed from J+F+N^+ data using equations (7)-(9)
(7) g = 0.69J+ + 0.31F+ - 0.19
(8) r = 1.14F+ -0.14J+ + 0.34
(9) i = N+ + 0.75
Note (2): The object classification is based on the optical appearance,
and spectral features when available. The sources are divided into
"galaxies" and "quasars" where:
G (G?) is a clearly (most likely) extended source;
Q (Q?) is a (most likely) stellar object;
sources denoted as ? are too faint to classify.
Note (3): Spectroscopy and infrared photometry references:
B82: Butcher, 1982, private communication
D97: Dey (1997, in Tanvir N., Aragon-Salamanca A., Wall J.V., eds,
The Hubble Space Telescope and the High Redshift Universe.
World Scientific, Singapore, p. 373
D96: Dunlop et al. (1996Natur.381..581D 1996Natur.381..581D)
D99: Dunlop (1999, in Roettgering H.J.A., Best P.N., Lehnert M.D.,
eds, The Most Distant Radio Galaxies. Koninklijke Nederlandse
Akademie van Wetenschappen, Amsterdam, p. 71
H96: Hall et al. (1996, Cat. J/ApJ/462/614
K85: Kron et al. (1985A&A...146...38K 1985A&A...146...38K)
MK : G. Neugebauer, P. Katgert et al., private communications
S97a: Spinrad, 1997, private communication
S97b: Spinrad et al. (1997ApJ...484..581S 1997ApJ...484..581S)
T84: Thuan et al. (1984ApJ...285..515T 1984ApJ...285..515T)
W98: Waddington (1998, ASP Conf. Ser. 146, 520)
Waddington et al. (2001MNRAS.328..882W 2001MNRAS.328..882W)
W91: Windhorst et al. (1991ApJ...380..362W 1991ApJ...380..362W)
W94: Windhorst et al. (1994ApJ...435..577W 1994ApJ...435..577W)
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History:
Kindly supplied by H.A. Andernach (number R660 in his list)
(End) Patricia Bauer [CDS] 10-May-2001