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J/A+A/434/475       Redshifts for X-ray selected AGNs        (Kitsionas+, 2005)

On the use of photometric redshifts for X-ray selected AGNs. Kitsionas S., Hatziminaoglou E., Georgakakis A., Georgantopoulos I. <Astron. Astrophys. 434, 475 (2005)> =2005A&A...434..475K
ADC_Keywords: QSOs ; Active gal. nuclei ; Redshifts ; Photometry, SDSS Keywords: technique: photometric - quasars: general - galaxies: active - galaxies: distances and redshifts - X-rays: galaxies Abstract: We present photometric redshift estimates for X-ray selected sources detected in the XMM/2dF survey. 5-band photometry for 193 sources has been obtained from the SDSS. We exclude 10 sources associated with Galactic stars. The tabulated data include the optical coordinate of all sources in our sample, their photometric redshift estimate, their r-band magnitude and g-r colour as well as their morphological classification (these optical parameters have been used in the discussion of our results). Spectroscopic redshifts are available only for a sub-sample of our data and are included in Table 1 together with the survey from which they have been obtained. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 68 88 Photometric redshifts for the 88 X-ray sources with spectroscopic identification in XMM-Newton/2dF sample table2.dat 68 95 Photometric redshifts for the 95 X-ray sources without spectroscopic identification in XMM-Newton/2dF sample
See also: B/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2002) J/MNRAS/349/135 : XMM-Newton/2dF survey. II. (Georgakakis+, 2004) J/AJ/125/1817 : SDSS Early-Type Galaxies Catalog (Bernardi+, 2003) J/AJ/123/567 : SDSS quasar catalog, I: Early Data Release (Schneider+, 2002) J/AJ/126/2579 : SDSS quasar catalog. II. First data release (Schneider+ 2003) Byte-by-byte Description of file: table1.dat table2.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Seq Source index number in increasing RA 5- 6 I2 h RAh Right ascension (J2000) from SDSS 8- 9 I2 min RAm Right ascension (J2000) from SDSS 11- 15 F5.2 s RAs Right ascension (J2000) from SDSS 18 A1 --- DE- Declination sign (J2000) 19- 20 I2 deg DEd Declination (J2000) from SDSS 22- 23 I2 arcmin DEm Declination (J2000) from SDSS 25- 29 F5.2 arcsec DEs Declination (J2000) from SDSS 32- 36 F5.3 --- zph Photometric redshift estimate 40- 44 F5.3 --- zsp ? Spectroscopic redshift measurement, only in table1.dat 47 I1 --- r_zsp [1/4]? Origin of spectroscopy, only in table1.dat (1) 50- 55 F6.3 mag rmag SDSS r band magnitude 58- 63 F6.3 mag g-r SDSS g-r colour in mag 67 A1 --- Type Note on morphology (2)
Note (1): Spectroscopy from: 1 = SDSS, Cat. J/AJ/126/2579 2 = 2QZ, Cat. VII/223 3 = AAT with AUTOFIB or LDSS (Georgantopoulos et al., 1996MNRAS.280..276G) 4 = our own campaign, Georgakakis et al., 2004, Cat. J/MNRAS/349/135 Note (2): SDSS optical morphology: P = point-like E = extended
Acknowledgements: Spyros Kitsionas, skitsionas(at)
(End) Patricia Vannier [CDS] 25-Jan-2005
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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