J/A+A/557/A123 XMM-Newton Wide Angle Survey (XWAS) (Esquej+, 2013)
The XMM-Newton Wide Angle Survey (XWAS).
Esquej P., Page M., Carrera F.J., Mateos S., Tedds J., Watson M.G.,
Corral A., Ebrero J., Krumpe M., Rosen S.R., Ceballos M.T., Schwope A.,
Page C.G., Alonso-Herrero A., Caccianiga A., Della Ceca R.,
Gonzalez-Martin O., Lamer G., Severgnini P.
<Astron. Astrophys., 557, A123 (2013)>
=2013A&A...557A.123E 2013A&A...557A.123E (SIMBAD/NED BibCode)
ADC_Keywords: X-ray sources ; Surveys ; Active gal. nuclei
Keywords: X-rays: general - surveys - X-rays: galaxies - galaxies: active
Abstract:
We present the XMM-Newton Wide Angle Survey (XWAS), a new catalogue of
almost a thousand X-ray sources spectroscopically identified through
optical observations. Sources lie in high-galactic latitude
(|b|>20deg) XMM-Newton fields mainly in the southern hemisphere.
A sample of X-ray sources detected in 68 XMM-Newton pointed
observations was selected for optical multi-fibre spectroscopy.
Optical counterparts and corresponding photometry of the X-ray sources
were obtained from the SuperCOSMOS Sky Survey. Candidates for
spectroscopy were initially selected with magnitudes down to R∼21,
with preference for X-ray sources having a flux
F0.5-4.5keV≥10-14erg/s/cm2. Optical spectroscopic observations
were made using the Two Degree Field of the Anglo Australian
Telescope, and the resulting spectra were classified based on optical
emission lines. We have identified through optical spectroscopy 940
X-ray sources over Ω∼11.8deg2 of the sky. Source populations
in our sample can be summarised as 65% broad line active galactic
nuclei (BLAGN), 16% narrow emission line galaxies (NELGs), 6%
absorption line galaxies (ALGs) and 13% stars. An active nucleus is
also likely to be present in the large majority of the X-ray sources
spectroscopically classified as NELGs or ALGs.
Description:
Optical images are available for all our fields in the SuperCOSMOS Sky
Survey (Hambly et al., 2001MNRAS.326.1279H 2001MNRAS.326.1279H).
We obtained optical multi-fibre spectroscopy of the X-ray sources with
the Anglo Australian Telescope (AAT) Two Degree Field (2dF).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
xwas_cat.dat 111 940 X-ray/optical catalogue
sp/* . 940 Individual spectra
--------------------------------------------------------------------------------
See also:
IX/41 : XMM-Newton Serendipitous Source Catalogue 2XMMi-DR3
(XMM-SSC, 2010)
J/A+A/493/339 : XMM-Newton serendipitous Survey. V. (Watson+, 2009)
Byte-by-byte Description of file: xwas_cat.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [XWAS]
6- 21 A16 --- XWAS Source name, XWAS JHHMMSS.s+DDMMSS,
2XMM JHHMMSS.s+DDMMSS in Simbad
23- 34 A12 --- OptID Optical identifier, XNNNNN_NNN
36- 37 I2 h RAh Right ascension (J2000.0) (1)
39- 40 I2 min RAm Right ascension (J2000.0) (1)
42- 46 F5.2 s RAs Right ascension (J2000.0) (1)
48 A1 --- DE- Declination sign (J2000.0) (1)
49- 50 I2 deg DEd Declination (J2000.0) (1)
52- 53 I2 arcmin DEm Declination (J2000.0) (1)
55- 58 F4.1 arcsec DEs Declination (J2000.0) (1)
60- 64 F5.3 --- z Redshift
66- 70 A5 --- Class Source classification from optical
spectroscopy
72- 76 F5.1 10-17W/m2 FX Flux in the [0.5-4.5]keV band
78- 82 F5.2 [10-7W] LX ? Logarithm of luminosity in the
[0.5-4.5]keV rest-frame band (2)
84- 99 A16 --- ScosID SOURCEID from superCOSMOS
101-105 F5.2 --- Rmag ? R magnitude (Vega)
107-111 F5.2 --- Bmag ? B magnitude (Vega)
--------------------------------------------------------------------------------
Note (1): The coordinates of the sources RA and DE, are not the X-ray positions
from the The XMM-Newton Serendipitous Survey (Watson et al.,
2001A&A...365L..51W 2001A&A...365L..51W), but the fibre positions of the optical spectroscopic
observations.
Note (2): Observed quantities (not corrected for absorption).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: sp/*
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 F7.2 0.1nm lambda Rest wavelength
10- 21 E12.6 mW/m2 Flux Flux
--------------------------------------------------------------------------------
Acknowledgements:
Pilar Esquej, pesquej(at)sciops.esa.int
(End) Pilar Esquej [ESAC, Spain], Patricia Vannier [CDS] 03-Feb-2017