J/AJ/135/2470 Radio observations of the HDFS region. IV. (Huynh+, 2008)
Radio observations of the Hubble Deep Field-South region.
IV. Optical properties of the faint radio population.
Huynh M.T., Jackson C.A., Norris R.P., Fernandez-Soto A.
<Astron. J., 135, 2470-2495 (2008)>
=2008AJ....135.2470H 2008AJ....135.2470H
ADC_Keywords: Surveys ; Radio sources ; Redshifts ; Photometry, UBVRI ;
Spectroscopy
Keywords: radio continuum: galaxies - surveys
Abstract:
The Australia Telescope Hubble Deep Field-South (ATHDF-S) survey of
the Hubble Deep Field-South (HDF-S) reaches sensitivities of ∼10uJy
at 1.4, 2.5, 5.2, and 8.7GHz, making the ATHDF-S one of the deepest
surveys ever performed with the Australia Telescope Compact Array
(ATCA). Here, we present the optical identifications of the ATHDF-S
radio sources using data from the literature. We find that ∼66% of the
radio sources have optical counterparts to I=23.5mag. Deep Hubble
Space Telescope (HST) imaging of the area identifies a further 12% of
radio sources. We present new spectroscopic observations for 98 of the
radio sources and supplement these spectroscopic redshifts with
photometric ones calculated from five-band optical imaging.
Description:
The radio observations and data reduction are detailed in Papers I-III
(Norris et al., 2005, Cat. J/AJ/130/1358; Huynh et al., 2005, Cat.
J/AJ/130/1373; Huynh et al., 2007, Cat. J/AJ/133/1331)
Palunas et al. (2000ApJ...541...61P 2000ApJ...541...61P) observed the HDF-S region using
the Big Throughput Camera (BTC) on the Cerro Tololo Inter-American
Observatory (CTIO) 4m during 1998 September. Images were taken in the
Sloan Digital Sky Survey (SDSS) u, Johnson B and V, and Cousins R and
I filters.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 102 473 CTIO properties of the catalogued ATHDFS sources
table2.dat 107 28 WFPC2 counterparts (tables 2 and 5 of the paper)
table3.dat 91 5 NICMOS counterparts (tables 3 and 5 of the paper)
table4.dat 124 4 STIS Counterparts (tables 4 and 5 of the paper)
table10.dat 129 98 Summary of 2dF spectral properties for ATHDFS
sources with 2dF redshifts
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See also:
J/AJ/130/1358 : Radio observations of the HDFS region. I (Norris+, 2005)
J/AJ/130/1373 : Radio observations of the HDFS region. II (Huynh+, 2005)
J/AJ/133/1331 : Radio observation of HDFS region. III (Huynh+, 2007)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- --- [ATHDFS]
7 A1 --- --- [_]
8- 23 A16 --- ATHDFS ATHDFS name (JHHMMSS.s+DDMMSS)
24 A1 --- m_ATHDFS [ABC] Multiplicity index on ATHDFS
26- 28 A3 --- f_CTIO CTIO counterpart (1)
30- 34 I5 --- CTIO ? CTIO catalog identification
36- 40 F5.2 mag Umag ? U band magnitude (in AB system)
42- 46 F5.2 mag e_Umag ? RMS error in Umag
48- 52 F5.2 mag Bmag ? B band magnitude (in AB system)
54- 58 F5.2 mag e_Bmag ? RMS error in Bmag
60- 64 F5.2 mag Vmag ? V band magnitude (in AB system)
66- 69 F4.2 mag e_Vmag ? RMS error in Vmag
71- 75 F5.2 mag Rmag ? R band magnitude (in AB system)
77- 80 F4.2 mag e_Rmag ? RMS error in Rmag
82- 86 F5.2 mag Imag ? I band magnitude (in AB system)
88- 92 F5.2 mag e_Imag ? RMS error in Imag
94- 97 F4.2 --- z ? CTIO photometric redshift
99-102 F4.2 --- e_z ? Uncertainty in z
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Note (1): Flag on CTIO as follows:
YES = a CTIO counterpart within the 1.8 arcsec matching radius
NO = no CTIO counterpart within the 1.8 arcsec matching radius
S = a nearby bright star which may affect the photometry
OUT = source outside of the CTIO images
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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 I1 --- Tab [2/5] Original table number (1)
3- 8 A6 --- --- [ATHDFS]
9 A1 --- --- [_]
10- 25 A16 --- ATHDFS ATHDFS name (JHHMMSS.s+DDMMSS)
27- 31 A5 --- FFID Flanking field ID (table5 only)
33- 37 F5.2 mag F300W ? HST F300W magnitude (in AB system)
39- 42 F4.2 mag e_F300W ? HST F300W rms error
44- 48 F5.2 mag F450W ? HST F450W magnitude (in AB system)
50- 53 F4.2 mag e_F450W ? HST F450W rms error
55- 59 F5.2 mag F606W ? HST F606W magnitude (in AB system)
61- 64 F4.2 mag e_F606W ? HST F606W rms error
66- 70 F5.2 mag F814W HST F814W magnitude (in AB system)
72- 75 F4.2 mag e_F814W HST F814W rms error
77-107 A31 --- Rem Morphological information
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Note (1): Code as follows:
2 = Summary of WFPC2 counterparts
5 = Summary of WFPC2 flanking field counterparts
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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 A1 --- Tab [3/5] Original table number (1)
3- 8 A6 --- --- [ATHDFS]
9 A1 --- --- [_]
10- 25 A16 --- ATHDFS ATHDFS name (JHHMMSS.s+DDMMSS)
27- 31 A5 --- FFID Flanking field ID (table5 only)
33- 37 F5.2 mag F110W ? HST/NICMOS F110W magnitude (in AB system)
39- 42 F4.2 mag e_F110W ? HST/NICMOS F110W rms error
44- 48 F5.2 mag F160W ? HST F160W magnitude (in AB system)
50- 53 F4.2 mag e_F160W ? HST F160W rms error
55- 59 F5.2 mag F222W ? HST F222W magnitude (in AB system)
61- 64 F4.2 mag e_F222W ? HST F222W rms error
66- 91 A26 --- Rem Morphological information
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Note (1): Tab code as follows:
3 = Summary of NICMOS counterparts
5 = Summary of NICMOS flanking field counterparts
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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 I1 --- Tab [4/5] Original table number (1)
3- 8 A6 --- --- [ATHDFS]
9 A1 --- --- [_]
10- 25 A16 --- ATHDFS ATHDFS name (JHHMMSS.s+DDMMSS)
27- 31 A5 --- FFID Flanking field ID (table5 only)
33- 37 F5.2 mag 50CCD STIS 50CCD detector (2500Å) magnitude
39- 42 F4.2 mag e_50CCD STIS 50CCD detector rms error
44- 48 F5.2 mag LP ? STIS F28X50LP filter (5500Å) magnitude
50- 53 F4.2 mag e_LP ? STIS F28X50LP filter rms error
55- 59 F5.2 mag NUV ? GALEX/NUV magnitude
61- 64 F4.2 mag e_NUV ? NUV rms error
66- 70 F5.2 mag FUV ? GALEX/FUV magnitude
72- 75 F4.2 mag e_FUV ? FUV rms error
77-124 A48 --- Rem Morphological information
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Note (1): Code as follows:
4 = Summary of STIS Counterparts
5 = Summary of STIS flanking field Counterparts
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Byte-by-byte Description of file: table10.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- --- [ATHDFS]
7 A1 --- --- [_]
8- 23 A16 --- ATHDFS ATHDFS name (JHHMMSS.s+DDMMSS)
24 A1 --- m_ATHDFS [ABC] Multiplicity index on ATHDFS
26- 31 F6.4 --- z 2dF redshift
33 I1 --- q_z quality of z (1)
35- 37 A3 --- Cl Spectral type (2)
39 A1 --- l_FHb Limit flag on FHb
40- 44 I5 ct FHb ? Hβ line flux (CCD counts)
46- 49 I4 ct e_FHb ? Uncertainty in FHb (CCD counts)
51 A1 --- l_FOIII Limit flag on FOIII
52- 56 I5 ct FOIII ? OIII (5007) line flux (CCD counts)
58- 61 I4 ct e_FOIII ? Uncertainty in FOIII (CCD counts)
63- 68 I6 ct FHa ? Hα line flux (CCD counts)
70- 73 I4 ct e_FHa ? Uncertainty in FHa (CCD counts)
75 A1 --- l_FNII Limit flag on FNII
76- 81 I6 ct FNII ? NII (6584) line flux (CCD counts)
83- 86 I4 ct e_FNII ? Uncertainty in FNII (CCD counts)
88-129 A42 --- Comm Additional comments
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Note (1): A value of 3 indicates three or more lines were identified, so
the redshift is very well determined. Two, one or no lines identified
are indicated by Q = 2, 1 or 0, respectively.
Note (2): Spectral type code as follows:
abs = galaxy with absorption lines
sf = star-forming galaxy
sy = Seyfert
BL = broad-line AGN
unc = unclassified
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History:
From electronic version of the journal
References:
Norris et al., Paper I 2005AJ....130.1358N 2005AJ....130.1358N, Cat. J/AJ/130/1358
Huynh et al., Paper II 2005AJ....130.1373H 2005AJ....130.1373H, Cat. J/AJ/130/1373
Huynh et al., Paper III 2007AJ....133.1331H 2007AJ....133.1331H, Cat. J/AJ/133/1331
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 14-Jan-2011