J/MNRAS/352/91 XMM-Newton/2dF survey. IV. (Georgantopoulos+, 2004)
The XMM-Newton/2dF survey -
IV. The X-ray spectral properties of the hard sources.
Georgantopoulos I., Georgakakis A., Akylas A., Stewart G.C., Giannakis O.,
Shanks T., Kitsionas S.
<Mon. Not. R. Astron. Soc., 352, 91-100 (2004)>
=2004MNRAS.352...91G 2004MNRAS.352...91G
ADC_Keywords: Radio sources ; QSOs ; Active gal. nuclei
Keywords: galaxies: active - quasars: general - X-rays: general
Abstract:
We present an analysis of the X-ray spectral properties of 61 hard
X-ray (2-8keV) selected sources from the bright XMM-Newton/2dF
(f(2-8keV)>10-14erg/cm2/s) survey. This comprises nine XMMNewton
pointings in the North Galactic Pole region (∼1.6deg2) and overlaps
with the SDSS, 2QZ and 2dFGRS surveys. Our sources contribute about
50 per cent of the 2-10keV X-ray background down to the flux limit
of 10-14erg/cm2/s. The hardness ratio distribution of the sample
suggests a deficit of heavily absorbed sources. Spectroscopic
identifications exist for 34 sources.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 98 61 Optical and X-ray properties of the sample
--------------------------------------------------------------------------------
See also:
B/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2002)
IX/37 : XMM-Newton Serendipitous Source Catalogue (1XMM) (XMM-SSC, 2003)
VII/226 : The 2dF Galaxy Redshift Survey 100k Data Release (2dFGRS, 2001)
J/MNRAS/349/135 : XMM-Newton/2dF survey. II. (Georgakakis+, 2004)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Seq Sequential number
3 A1 --- n_CR [d] if count rate and flux from MOS;
otherwise from PN instrument.
5- 6 I2 h RAh X-ray right ascension (J2000)
8- 9 I2 min RAm X-ray right ascension (J2000)
11- 14 F4.1 s RAs X-ray right ascension (J2000)
16 A1 --- DE- X-ray declination sign (J2000)
17- 18 I2 deg DEd X-ray declination (J2000)
20- 21 I2 arcmin DEm X-ray declination (J2000)
23- 24 I2 arcsec DEs X-ray declination (J2000)
26- 30 F5.2 ct/s CR Counte rate at 2-8keV
32- 35 F4.2 ct/s e_CR rms uncertainty on CR
37- 41 F5.2 10-17W/m2 Flux Flux at 2-8keV (10-14erg/cm2/s)
43- 46 F4.2 10-17W/m2 e_Flux rms uncertainty on Flux
48- 52 I5 s ExpTime ? Total exposure time in 2-8keV band from
merged PN + MOS image
54 A1 --- l_Pmemb Limit flag on Pmemb
55- 58 F4.2 % Pmemb ?=- Probability that a given candidate is
chance coincidence
60- 62 F3.1 arcsec dr ?=- Separation of the optical counterpart
from the X-ray centroid
64- 68 F5.2 mag gmag ? g magnitude of the optical counterpart
70- 79 A10 --- OClass Optical class
81- 86 F6.3 --- z ? Redshift
87 A1 --- u_z [?] Uncertainty flag on z
90- 96 A7 --- Class Classification (2)
98 A1 --- Note [fge] Note (1)
--------------------------------------------------------------------------------
Note (1): Notes as follows:
e = Photometric redshifts from SDSS catalogue
f = X-ray/optical properties indicate Galactic star but spectroscopy
not available
g = Identification from 2QZ gives a star, but spectrum may be
suggesting a galaxy at z= 0.243
Note (2): in this column, the ,eaning is as follows:
AL = absorption lines
BL = broad lines
NL = norrow lines
photo-z = photometric redshift from SDSS
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Georgakakis et al., Paper I 2003MNRAS.344..161G 2003MNRAS.344..161G
Georgakakis et al., Paper II 2004MNRAS.349..135G 2004MNRAS.349..135G, Cat. J/MNRAS/349/135
Basilakos et al., Paper III 2004MNRAS.351..989B 2004MNRAS.351..989B
Georgakakis et al., Paper V 2004MNRAS.352.1005G 2004MNRAS.352.1005G
Basilakos et al., Paper VI 2005MNRAS.356..183B 2005MNRAS.356..183B
Akylas et al., Paper VII 2004MNRAS.353.1015A 2004MNRAS.353.1015A
Gaga et al., Paper VIII 2005MNRAS.363..811G 2005MNRAS.363..811G
(End) Patricia Vannier [CDS] 03-Feb-2006