J/A+A/619/A48 GOODS-N AGN VLBI detect. & radio properties (Radcliffe+, 2018)
Nowhere to Hide: Radio-faint AGN in GOODS-N field.
I. Initial catalogue and radio properties.
Radcliffe J.F., Garrett M.A., Muxlow T.W.B., Beswick R.J., Barthel P.D.,
Deller A.T., Keimpema A., Campbell R.M., Wrigley N.
<Astron. Astrophys. 619, A48 (2018)>
=2018A&A...619A..48R 2018A&A...619A..48R (SIMBAD/NED BibCode)
ADC_Keywords: VLBI ; Galaxies, radio; Active gal. nuclei
Keywords: catalogs - radio continuum: galaxies - galaxies: active -
galaxies: nuclei - techniques: high angular resolution -
techniques: interferometric
Abstract:
Conventional radio surveys of deep fields ordinarily have arc-second
scale resolutions often insufficient to reliably separate radio
emission in distant galaxies originating from star-formation and
AGN-related activity. Very long baseline interferometry (VLBI) can
offer a solution by identifying only the most compact radio emitting
regions in galaxies at cosmological distances where the high
brightness temperatures (in excess of 105K) can only be reliably
attributed to AGN activity.The newest VLBI techniques are used to
completely cover an entire 7.5' radius area to milliarcsecond
resolutions, while bright radio sources (S>0.1mJy) are targeted up to
25-arcmin from the pointing centre. Multi-source self-calibration, and
a primary beam model for the EVN array are used to correct for
residual phase errors and primary beam attenuation respectively. This
paper presents the largest catalogue of VLBI detected sources in
GOODS-N comprising of 31 compact radio sources across a redshift range
of 0.11-3.44, almost three times more than previous VLBI surveys in
this field.
Description:
Radio properties and derived parameters for the 31 detected VLBI
sources in GOODS-N. This catalogue is identical to that presented in
Tables 2 & 3 in the paper.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
catalog.dat 209 31 GOODS-N VLBI detections and radio properties
(corrected version)
--------------------------------------------------------------------------------
See also:
II/261 : GOODS initial results (Giavalisco+, 2004)
J/ApJ/616/71 : Optical properties of SCUBA galaxies (Smail+, 2004)
J/AJ/127/3137 : Hawaii redshifts in the ACS-GOODS region (Cowie+, 2004)
J/ApJ/622/772 : Redshift survey of submillimeter galaxies (Chapman+, 2005)
J/ApJ/689/687 : GOODS-N spectroscopic survey (Barger+, 2008)
J/ApJS/215/27 : Photometric redshifts in the Hawaii-HDF-N (Yang+, 2014)
J/ApJS/214/24 : 3D-HST+CANDELS catalog (Skelton+, 2014)
Byte-by-byte Description of file: catalog.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 A14 --- Source Source name (JHHMMSS+DDMMSS)
16- 21 F6.4 --- z Redshift
23- 27 F5.2 --- b_z ?=-1 Redshift 68% lower confidence interval
29- 33 F5.2 --- B_z ?=-1 Redshift 68% higher confidence interval
35 A1 --- ztype [P/S] Redshift type
(P=photometric, S=spectroscopic)
37- 39 A3 --- r_z Redshift reference (1)
41- 42 I2 h RAh VLBI right ascension (J2000)
44- 45 I2 min RAm VLBI right ascension (J2000)
47- 53 F7.4 s RAs VLBI right ascension (J2000)
55 A1 --- DE- VLBI declination sign (J2000)
56- 57 I2 deg DEd VLBI declination (J2000)
59- 60 I2 arcmin DEm VLBI declination (J2000)
62- 67 F6.3 arcsec DEs VLBI declination (J2000)
69- 74 F6.1 uJy/beam PVLBI VLBI peak brightness
76- 80 F5.1 uJy/beam e_PVLBI ?=-99 Error on VLBI peak brightness
82- 87 F6.1 uJy IVLBI VLBI integrated flux density
89- 93 F5.1 uJy e_IVLBI ?=-99 Error on VLBI integrated flux density
95- 99 F5.1 --- SN Signal to noise ratio
101-104 F4.1 mas bmaj Major axis of VLBI restoring beam
106-109 F4.1 mas bmin Minor axis of VLBI restoring beam
111-114 F4.1 deg BPA Position angle of VLBI restoring beam
116-119 I4 uJy/beam PVLA VLA peak brightness
121-123 I3 uJy/beam e_PVLA Error on VLA peak brightness
125-129 I5 uJy IVLA VLA integrated flux density
131-134 I4 uJy e_IVLA ?=-99 Error on VLA integrated flux density
136-141 F6.2 --- Sp+Index Spectral index derived from
VLA 1.5-5.5GHz observation
143-149 E7.1 W/Hz L1.5GHz Rest-frame radio luminosity (from VLA flux)
151-157 E7.1 W/Hz e_L1.5GHz ?=-99 Error on rest-frame radio luminosity
159-163 E5.1 K TB Rest-frame brightness temperature
165-167 I3 --- l_TB [0/1]?=-99 Brightness temperature
lower limit flag (2)
169 A1 --- TBiw [NU-] Image weighting used to derive Tb (3)
171-175 F5.1 mas bmajs ?=-99 Deconvolved major axis of angular
source size
177-179 I3 --- f_bmajs [0/1]?=-99 Angular size (bmaj)
unresolved flag (2)
181-185 F5.1 mas bmins ?=-99 Deconvolved minor axis of
angular source size
187-189 I3 --- f_bmins [0/1]?=-99 Angular size (bmin)
unresolved flag (2)
191-195 F5.1 pc bmajp ?=-99 Deconvolved major axis of
physical source size
197-199 I3 --- f_bmajp [0/1]?=-99 Physical size (bmaj)
unresolved flag (2)
201-205 F5.1 pc bminp ?=-99 Deconvolved minor axis of
physical source size
207-209 I3 --- f_bminp [0/1]?=-99 Physical size (bmin)
unresolved flag (2)
--------------------------------------------------------------------------------
Note (1): Abbreviations correspond to the following references:
B08 = Barger et al. (2008ApJ...689..687B 2008ApJ...689..687B, Cat. J/ApJ/689/687)
S04 = Smail et al. (2004ApJ...616...71S 2004ApJ...616...71S, Cat J/ApJ/616/71)
C05 = Chapman et al. (2005ApJ...622..772C 2005ApJ...622..772C, Cat. J/ApJ/622/772)
S14 = Skelton et al. (2014ApJS..214...24S 2014ApJS..214...24S, Cat. J/ApJS/214/24)
M17 = Murphy et al. (2017ApJ...839...35M 2017ApJ...839...35M)
C17 = Cowie et al. (2017ApJ...837..139C 2017ApJ...837..139C)
Y14 = Yang et al. (2014ApJS..215...27Y 2014ApJS..215...27Y, Cat. J/ApJS/215/27)
C04 = Cowie et al. (2004AJ....127.3137C 2004AJ....127.3137C, Cat. J/AJ/127/3137)
CPC = Cowie priv. comm.
Note (2): Flag used to determine if a measured source size is unresolved,
as follows:
1 = Unresolved i.e. brightness temperatures are a lower limit and
source sizes are upper limits if the flag = 1.
0 = Resolved.
Note (3): Image weighting used to derive Tb flag as follows:
U = Uniform weighting
N = Natural weighting
- = TB not calculated
--------------------------------------------------------------------------------
Acknowledgements:
Jack Radcliffe, j.f.radcliffe(at)rug.nl
History:
* 07-Nov-2018: on-line version
* 03-Jan-2019: corrected version (from author)
(End) J, Radcliffe [Uni. Groningen, Netherlands], P, Vannier [CDS] 20-Aug-2018