J/A+A/551/A97 Lockman Hole/XMM VLBI observations (Middelberg+, 2013)
Mosaiced wide-field VLBI observations of the Lockman Hole/XMM.
Middelberg E., Deller A.T., Norris R.P., Fotopoulou S., Salvato M.,
Morgan J.S., Brisken W., Lutz D., Rovilos E.
<Astron. Astrophys., 551, A97 (2013)>
=2013A&A...551A..97M 2013A&A...551A..97M
ADC_Keywords: Active gal. nuclei ; VLBI ; Radio sources
Keywords: techniques: interferometric - galaxies: active - galaxies: evolution
Abstract:
Active galactic nuclei (AGN) play a decisive role in galaxy evolution,
particularly so when they launch powerful jets, which reshape their
surroundings. However, identifying them is difficult, since radio
observations typically have a resolution between 1arcsec and 10arcsec,
which is equally sensitive to radio emission from star-forming
activity and from AGN. Very Long Baseline Interferometry (VLBI)
observations allow only the most compact non-thermal emission to be to
be filtered from radio survey data. The observational and
computational demands to do this in large surveys have, until
recently, been too high to make this practical. Only the recent advent
of wide-field observing techniques have enabled such observations, and
we here present the results of a survey of 217 radio sources in the
Lockman Hole/XMM field. We detected 65 out of the 217 radio sources
and were able to construct, for the first time, the source counts of
VLBI-detected AGN.
Description:
The observations for this project were carried out with the VLBA at
1.382GHz on 3 June (epoch A), 4 July (epoch B), 16 July (epoch C)
and 3 September (epoch D) of 2010.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 101 217 Data of the 217 sources which were in principle
detectable (SVLA>6σ)
table7.dat 66 65 Multi-wavelength data for the VLBI-detected sources
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See also:
J/A+A/329/482 : ROSAT Deep Survey in the Lockman Hole (Hasinger+, 1998)
J/PASJ/53/445 : ASCA Deep survey in Lockman Hole Field (Ishisaki+, 2001)
J/A+A/393/425 : Spectral analysis of Lockman Hole (Mainieri+, 2002)
J/A+A/398/901 : VLA survey at 6 cm in the Lockman Hole (Ciliegi+, 2003)
J/AJ/125/2521 : 2MASS6x survey of the Lockman Hole (Beichman+, 2003)
J/A+A/413/843 : Far IR survey in the Lockman Hole (Kawara+, 2004)
J/A+A/427/23 : 14.3um survey in the Lockman Hole (Fadda+, 2004)
J/A+A/427/773 : Lockman Hole ISOCAM 14.3um Deep Survey (Rodighiero+, 2004)
J/A+A/434/801 : X-ray sources near Lockman Hole (Zappacosta+, 2005)
J/A+A/444/79 : Lockman Hole brightest AGNs XMM observations (Mateos+, 2005)
J/A+A/473/105 : Lockman Hole AGN variability with XMM (Mateos+, 2007)
J/A+A/479/283 : XMM observations of the Lockman Hole (Brunner+, 2008)
J/A+A/487/475 : X-ray variability of AGNs in Lockman Hole (Papadakis+, 2008)
J/MNRAS/387/1037 : 610-MHz survey of Lockman Hole with GMRT (Garn+, 2008)
J/MNRAS/397/281 : Radio imaging in Lockman Hole (Ibar+, 2009)
J/ApJS/185/433 : SWIRE/Chandra survey in Lockman Hole Field (Wilkes+, 2009)
J/other/BASI/38.103 : 610MHz survey of Lockman Hole with GMRT. II (Garn+, 2010)
J/A+A/529/A135 : AGN Opt/IR properties in Lockman Hole (Rovilos+, 2011)
J/ApJS/198/1 : Photometry catalogs for the Lockman Hole (Fotopoulou+, 2012)
J/MNRAS/429/2080 : Lockman Hole 10C sources radio sp. index (Whittam+ 2013)
Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1 A1 --- --- [L]
2- 5 I04 --- ID [3/1436] Source ID used in this paper, LNNNN
7- 14 A8 --- --- [LH1.4GHz]
15- 31 A17 --- LH1.4GHz Name, JHHMMSS.s+DDMMSS (1)
33- 38 I6 uJy S0.61 ? Flux density at 610GHz
40- 45 I6 uJy S1.4 ? Flux density at 1.4GHz
47- 51 F5.2 --- alpha ? Spectral index between 610MHz and 1.4GHz
53- 55 I3 uJy rms ? rms of the VLBA (1.4GHz) observations
(uniform weighting, in uJy/beam)
57- 60 I4 uJy Sp ? Peak flux density of the VLBA observations
(uniform weighting, in uJy/beam)
62- 64 I3 uJy e_Sp ? rms uncertainty on Sp (in uJy/beam)
66- 70 I5 uJy Sint ? Integrated flux density of the VLBA
observations (uniform weighting, in uJy/beam)
72- 74 I3 uJy e_Sint ? rms uncertainty on Sint (in uJy/beam)
76- 88 F13.9 deg RAdeg ? Flux-weighted right ascension of the VLBI
source (uniform weighting) (J2000)
90-101 F12.9 deg DEdeg ? Flux-weighted declination of the VLBI source
(uniform weighting) (J2000)
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Note (1): Source designation used by Ibar et al. (2009MNRAS.397..281I 2009MNRAS.397..281I),
<[IIB2009] LH1.4GHz JHHMMSS.s+DDMMSSa> in Simbad
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Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- --- [L]
2- 5 I04 --- ID [3/1436] Source ID used in this paper, LNNNN
7- 12 I6 --- F12 ? Optical ID from Fotopoulou et al. 2012,
Cat. J/ApJS/198/1 ([FSH2012])
13 A1 --- n_F12 [abc] Note when no optical counterpart) (1)
15- 19 F5.2 mag Rcmag ? Cousins R magnitude (AB scale)
21- 25 F5.2 mag [3.6] ? SWIRE 3.6um magnitude (AB scale)
27- 32 F6.4 --- zsp ? Spectroscopic redshift
34- 37 F4.2 --- zph ? Best photometric redshift
39 I1 ---- Mph ? Morphology flag (2)
41 I1 ---- Q [1/4]? Quality of the fit, 4=OK (3)
43- 45 I3 ---- Mod ? Model type used in the best fit for
photometric redshift
47- 51 F5.1 10-19W/m2 FX ? X-ray flux in 0.5-2keV band
52 A1 --- n_FX [ab] Note for no flux value reasons (4)
54 A1 --- l_logLX Limit flag on logLX
56- 60 F5.2 [10-7W] logLX ? X-ray luminosity in 0.5-2keV band (erg/s)
62- 66 F5.2 --- HR1 ? Hardness ratio calculated between the
0.5-2keV and 2.0-4.5keV bands
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Note (1): Flag for no-counterpart as follows:
a = outside imaged area
b = uncatalogued/blended counterpart
c = no visible counterpart
Note (2): Morphology flag as follows:
0 = point-like
1 = unresolved
2 = early type or bulge-dominated
3 = unclassified
4 = spiral
Note (3): Quality of the fit as follows:
1 = too few bands
2 = blended photometry
3 = doubful because of a lack of X-ray information
4 = a good fit
Note (4): Flag for no-value as follows:
a = outside imaged area
b = imaged, but undetected
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 23-Aug-2013