Access to Astronomical Catalogues

J/A+A/479/283       XMM observations of the Lockman Hole     (Brunner+, 2008)
XMM-Newton observations of the Lockman Hole:
X-ray source catalogue and number counts.
    Brunner H., Cappelluti N., Hasinger G., Barcons X., Fabian A.C.,
    Mainieri V., Szokoly G.
   <Astron. Astrophys., 479, 283-300 (2008)>
   =2008A&A...479..283B
ADC_Keywords: X-ray sources ; Surveys ; Positional data

Keywords: survey - galaxies: active - galaxies: quasars: general -
          X-ray: galaxies - X-ray: general

Description:
    The Lockman Hole represents the sky area of lowest Galactic
    line-of-sight columns density. It was observed by the XMM-Newton
    X-ray observatory in 18 pointings performed between April 2000 and
    December 2002. The total exposure time spent on the field was 1.16Ms
    (EPIC pn detector; EPIC MOS detector: 1.30 Ms). The effective exposure
    after removal of times of high particle background is 637ks (EPIC pn
    detector; EPIC MOS detector: 765ks). The catalogue lists positions,
    count rates, fluxes, hardness ratios, and partial optical
    classifications of 409 X-ray point sources detected in the central
    0.196°2 of the field down to a detection likelihood threshold of 10
    (3.9sigma). The analysis was performed using the XMM-Newton SAS data
    analysis package version 6.0.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table3.dat       231      409   Point source catalogue


See also:
 B/xmm : XMM-Newton Observation Log (XMM-Newton Science Operation Center, 2007)
 IX/39 : XMM-Newton 2nd Serendipitous Source Catalogue (2XMM) (XMM-SSC, 2007)
 J/A+A/371/833 : ROSAT Ultra Deep Survey (Lehmann+, 2001)


Byte-by-byte Description of file: table3.dat

   Bytes Format Units      Label   Explanations

   2-  5  I4    ---        XMMNR   Source number
   7-  9  I3    ---        ROSNR   ? ROSAT source number (Lehmann et al.,
                                     2001, Cat. J/A+A/371/833)
  11- 15  A5    ---        ClR     Object class of ROSAT object
                                    (Lehmann et al., 2001, J/A+A/371/833)
                                    as displayed in Figure 7
  17- 21  A5    ---        ClX     Object class from XMM follow-up
                                    (Szokoly et al., in preparation)
                                    as displayed in Figure 7
  23- 26  A4    ---        ---     [XMMU]
  28- 43  A16   ---        XMMU    XMMU designation (JHHMMSS.s+DDMMSS)
  45- 46  I2    h          RAh     Right Ascension J2000 (hours)
  48- 49  I2    min        RAm     Right Ascension J2000 (minutes)
  51- 55  F5.2  s          RAs     Right Ascension J2000 (seconds)
  57- 58  I2    deg        DEd     Declination J2000 (degrees)
  60- 61  I2    arcmin     DEm     Declination J2000 (minutes)
  63- 66  F4.1  arcsec     DEs     [0/60] Declination J2000 (arcsec)
  68- 70  F3.1  arcsec     e_Pos   Positional error (arcsec)
  72- 77  I6    ---        Ldet0   Likelihood of detection (0.5-10.0keV band)
  79- 84  F6.2  ct/ks      CR0     Source count rate (0.5-10.0keV band) (1)
  86- 89  F4.2  ct/ks      e_CR0   Count rate error (0.5-10.0keV band)
  91- 97  F7.1  10-19W/m2  Flux0   Flux (0.5-10.0keV band) (2)
  99-102  F4.1  10-19W/m2 e_Flux0  Flux error (0.5-10.0kev band) (3)
 104-109  I6    ---        Ldet1   Likelihood of detection (0.5-2.0keV band)
 111-116  F6.2  ct/ks      CR1     Source count rate (0.5-2.0keV band) (1)
 118-121  F4.2  ct/ks      e_CR1   Count rate error (0.5-2.0keV band)
 123-129  F7.1  10-19W/m2  Flux1   Flux (0.5-2.0keV band) (4)
 131-134  F4.1  10-19W/m2 e_Flux1  Flux error (0.5-2.0keV band)
 136-141  I6    ---        Ldet2   Likelihood of detection (2.0-4.5keV band)
 143-148  F6.2  ct/ks      CR2     Source count rate (2.0-4.5keV band) (1)
 150-153  F4.2  ct/ks      e_CR2   Count rate error (2.0-4.5keV band)
 155-161  F7.1  10-19W/m2  Flux2   Flux (2.0-10.0keV band) (4)
 163-166  F4.1  10-19W/m2 e_Flux2  Flux error (2.0-10.0keV band)
 168-173  I6    ---        Ldet3   Likelihood of detection (4.5-10.0keV band)
 175-180  F6.2  ct/ks      CR3     Source count rate (4.5-10.0keV band) (1)
 182-185  F4.2  ct/ks      e_CR3   Count rate error (4.5-10.0keV band)
 187-193  F7.1  10-19W/m2  Flux3   Flux (5.0-10.0keV band) (4)
 195-198  F4.1  10-19W/m2 e_Flux3  Flux error (5.0-10.0keV band)
 200-204  F5.2  ---        HR1     [-1/1] Hardness Ratio (CR2-CR1)/(CR2+CR1)
 206-209  F4.2  ---        e_HR1   Hardness Ratio error
 211-215  F5.2  ---        HR2     [-1/1]?=9.99 Hardness Ratio
                                                 (CR3-CR2)/(CR3+CR2)
 216-220  F5.2  ---        e_HR2   ?=9.99 Hardness Ratio error
 222-226  F5.2  ---        HR3     [-1/1] Hardness Ratio (CR3-CR1)/(CR3+CR1)
 228-231  F4.2  ---        e_HR3   Hardness Ratio error

Note (1): Combined all-EPIC point source count rate, corrected for
     telescope vignetting and for the fraction of counts outside the
     source extraction region.
Note (2): Sum of 0.5-2.0keV and 2.0-10.0keV band flux.

Note (3): Calculated by error propagation from individual band flux errors.

Note (4): Extrapolated from source count rate by assuming an absorbed
     power law spectrum with spectral index Gamma=2.0 and Galactic
     NH=5.7x1019cm-2. Expressed in 10-16erg/cm2/s.


Acknowledgements:
    H. Brunner, hbrunner(at)mpe.mpg.de
(End)                                      Patricia Vannier [CDS]    08-Feb-2008