J/A+A/444/79 XMM observations of Lockman Hole brightest AGNs (Mateos+, 2005)
XMM-Newton observations of the Lockman Hole.
IV: spectra of the brightest AGN.
Mateos S., Barcons X., Carrera F.J., Ceballos M.T., Hasinger G.,
Lehmann I., Fabian A.C., Streblyanska A.
<Astron. Astrophys., 444, 79-99 (2005)>
=2005A&A...444...79M 2005A&A...444...79M
ADC_Keywords: X-ray sources ; Surveys ; Active gal. nuclei
Keywords: X-rays: general - X-rays: diffuse background - surveys -
galaxies: active
Abstract:
This paper presents the results of a detailed X-ray spectral analysis
of a sample of 123 X-ray sources detected with XMM-Newton in the
Lockman Hole field. This is the deepest observation carried out with
XMM-Newton with more that 600ks of good EPIC-pn data. We have
spectra with good signal to noise (>500 source counts) for all objects
down to 0.2-12keV fluxes of 5x10-15erg/cm2/s (flux limit of
6x10-16erg/cm2/s in the 0.5-2 and 2-10keV bands). At the time of
the analysis, we had optical spectroscopic identifications for 60% of
the sources, 46 being optical type-1 AGN and 28 optical type-2 AGN.
Using a single power law model our sources' average spectral slope
hardens at faint 0.5-2keV fluxes but not at faint 2-10keV fluxes.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table8.dat 112 123 X-ray catalogue
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See also:
J/A+A/393/425 : Spectral analysis of Lockman Hole (Mainieri+, 2002)
J/A+A/329/482 : ROSAT Deep Survey in the Lockman Hole (Hasinger+, 1998)
J/A+A/398/901 : VLA survey at 6cm in the Lockman Hole (Ciliegi+, 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 : ISOCAM 14.3um Deep Survey in Lockman Hole (Rodighiero+, 2004)
J/AJ/125/2521 : 2MASS6x survey of the Lockman Hole (Beichman+, 2003)
J/PASJ/53/445 : ASCA Deep survey in Lockman Hole Field (Ishisaki+, 2001)
Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- [MBC2005] [5/2045] Source sequential number
6- 8 I3 --- RDS ? X-ray source ROSAT number (RDS NNN)
10- 13 A4 --- RDSO Optical Source ROSAT number (RDS NNNA)
15- 16 I2 h RAh Right ascension (J2000.0) (1)
18- 19 I2 min RAm Right ascension (J2000.0) (1)
21- 25 F5.2 s RAs Right ascension (J2000.0) (1)
27 A1 --- DE- Declination sign (J2000.0) (1)
28- 29 I2 deg DEd Declination (J2000.0) (1)
31- 32 I2 arcmin DEm Declination (J2000.0) (1)
34- 38 F5.2 arcsec DEs Declination (J2000.0) (1)
40- 44 A5 --- Class Source classification from optical
spectroscopy
45- 46 A2 --- n_Class [* ] **: BAL QSO
48- 52 F5.3 --- z ?=- Redshift
54- 59 A6 --- Model Best fit spectral model (2)
61- 64 F4.2 --- Gamma Power law spectral slope
66- 69 F4.2 --- e_Gamma Power law spectral slope low error bar
71- 74 F4.2 --- E_Gamma Power law spectral slope high error bar
76- 80 F5.2 [cm-2] log(Abs) ? Logarithm of the column density
of excess absorption (3)
82- 85 F4.2 [cm-2] e_log(Abs) ? Low error bar of column density
of excess absorption
87- 90 F4.2 [cm-2] E_log(Abs) ? High error bar of column density
of excess absorption
92- 95 F4.2 10-17W/m2 F(0.5-2)keV Flux in the [0.5-2]keV band
97-100 F4.2 10-17W/m2 F(2-10)keV Flux in the [2-10]keV band
102-106 F5.2 [10-7W] L(0.5-2)keV ? Logarithm of luminosity in the
[0.5-2]keV rest-frame band (4)
108-112 F5.2 [10-7W] L(2-10)keV ? Logarithm of the luminosity in the
[2-10]keV rest-frame band
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Note (1): The coordinates of the sources RA and DE, are not the X-ray
positions from the Lockman Hole catalogue (H. Brunner et al. 2005,
in prep.), but the centres of the regions used to extract the spectra
of the objects.
Note (2): Best fit spectral model as follows:
SPL = Single power law
APL = Absorbed power law
SE = Soft excess emission
CAPL = Absorption with partial covering absorber
2SPL = Two power laws (to fit spectral hardening at high energies)
Note (3): Intrinsic rest-frame absorption if the source is already identified.
Observed absorption if the source is still unidentified
Note (4): Luminosities are corrected for the effect of absorption.
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Acknowledgements: Silvia Mateos, sm279(at)star.le.ac.uk
References:
Hasinger et al., Paper I 2001A&A...365L..45H 2001A&A...365L..45H
Mainieri et al., Paper II 2002A&A...393..425M 2002A&A...393..425M, Cat. J/A+A/393/425
Streblyanska et al., Paper III 2005A&A...432..395S 2005A&A...432..395S
(End) Patricia Vannier [CDS] 01-Dec-2005