II/290 SWIRE Photometric Redshift Catalogue (Rowan-Robinson+, 2008)
Photometric redshifts in the SWIRE Survey.
Rowan-Robinson M., Babbedge T., Oliver S., Trichas M., Berta S.,
Lonsdale C., Smith G., Shupe D., Surace J., Arnouts S., Ilbert O.,
Fevre O.L., Afonso-Luis A., Perez-Fournon I., Hatziminaoglou E.,
Polletta M., Farrah D., Vaccari M.
<Mon. Not. R. Astron. Soc., 386, 697-714 (2008)>
=2008MNRAS.386..697R 2008MNRAS.386..697R
ADC_Keywords: Surveys ; Galaxies, IR ; Galaxies, photometry ; Redshifts
Keywords: stars: formation - galaxies: evolution - galaxies: starburst -
cosmology: observations - infrared: galaxies
Abstract:
We present the SWIRE Photometric Redshift Catalogue 1025119
redshifts of unprecedented reliability and of accuracy comparable with
or better than previous work. Our methodology is based on fixed galaxy
and quasi-stellar object templates applied to data at 0.36-4.5um, and
on a set of four infrared emission templates fitted to infrared excess
data at 3.6-170um. The galaxy templates are initially empirical, but
are given greater physical validity by fitting star formation
histories to them, which also allows us to estimate stellar masses.
Description:
The SWIRE Photometric Redshift Catalogue consists of 1025119
sources, split between the SWIRE fields as follows: EN1 (218117),
EN2 (125364), Lockman (229238), SWIRE-VVDS (34630), SWIRE-SXDS
(55432), XMM-LSS (excluding VVDS and SXDS) (212572), Chandra DFS (149766).
It is available via IRSA and also at
http://astro.ic.ac.uk/~mrr/swirephotzcat .
The areas from the SWIRE Survey in which we have optical photometry
and are able to derive photometric redshifts are as follows:
(1) 8.72deg2 of ELAIS-N1, in which we have five-band (U'g'r'i'Z')
photometry from the Wide Field Survey (WFS),
(2) 4.84deg2 of ELAIS-N2, in which we have five-band (U'g'r'i'Z')
photometry from the WFS,
(3) 7.53deg2 of the Lockman Hole, in which we have 3-band photometry
(g'r'i') from the SWIRE photometry program, with U-band
photometry in 1.24deg2,
(4) 4.56deg2 in Chandra Deep Field South (CDFS), in which we have
3-band (g'r'i') photometry from the SWIRE photometry program,
(5) 6.97deg2 of XMM-LSS, in which we have five-band (UgriZ) photometry
from Pierre et al. (2007, Cat. J/MNRAS/382/279).
In addition within XMM we have 10-band photometry (ugrizUBVRI) from
the VVDS program (0.7deg2), and very deep five-band photometry
(BVRi'z') in 1.12deg2 of the Subaru XMM Deep Survey (SXDS).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
finalcat.dat 1107 1066876 SWIRE photometric redshift catalogue
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See also:
II/255 : SWIRE ELAIS N1 Source Catalogs (Surace+, 2004)
III/250 : The VIMOS VLT deep survey (VVDS-DEEP) (Le Fevre+ 2005)
J/MNRAS/351/1290 : ELAIS: final band-merged catalogue (Rowan-Robinson+, 2004)
J/AJ/128/1483 : Optical properties of CLASXS X-ray sample (Steffen+, 2004)
J/AJ/129/1198 : SDSS quasars in SWIRE ELAIS N1 field (Hatziminaoglou+, 2005)
J/AJ/129/2074 : Faint Chandra sources in SWIRE (Franceschini+, 2005)
J/A+A/467/565 : z=1-3 ULIRGs from the Spitzer SWIRE survey (Berta+, 2007)
J/A+A/476/151 : SWIRE ELAIS-S1 IR-peak galaxy IR fluxes (Berta+, 2007)
J/MNRAS/379/1343 : UKIDSS massive supercluster infrared study (Swinbank+, 2007)
J/MNRAS/386/1252 : SWIRE/SDSS quasars (Hatziminaoglou+, 2008)
Byte-by-byte Description of file: finalcat.dat
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Bytes Format Units Label Explanations
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2- 9 I8 --- IR [2/714568] Infrared identifier
12- 19 I8 --- Opt [0/13182599] Optical identifier
21- 31 F11.6 deg RAdeg Right ascension (J2000)
33- 43 F11.6 deg DEdeg Declination (J2000)
45- 54 F10.2 uJy S3.6 ?=0.00 Flux density at 3.6um
56- 65 F10.2 uJy S24 ?=0.00 Flux density at 24um
67- 76 F10.2 uJy S70 ?=0.00 Flux density at 70um
78- 85 F8.2 mag rmag ?=99.000 r-band magnitude (1)
87- 89 I3 --- J1 [1/15] Optical template type (1-11 galaxies,
13-15 QSOs) for AV=0 solution
91- 97 F7.3 --- alz1 [0/0.85] log(1+zph) for AV=0 solution
99-108 F10.3 --- err1 Reduced chi2 for AV=0 solution
110-112 I3 --- J2 [1/15] Optical template type (1-11 galaxies,
13-15 QSOs) for free AV solution
114-120 F7.3 --- alz2 [0/0.85] log(1+zph) for free AV solution
122-127 F6.2 mag AV2 ?=0.00 Absorption in V band
129-138 F10.3 --- err2 Reduced chi2 for free AV solution
140-142 I3 --- N91 [2/14] Total number of photometric bands
in solution
144-146 I3 --- Nopt [0/10] Number of optical bands in solution
148-155 F8.2 mag BMAG ?=0.00 MB (corrected for extinction) for
free AV solution
159-164 F6.2 [Lsun] logLB B luminosity
166-175 F10.5 --- zsp ?=0.00000 Spectroscopic redshift
177-180 I4 --- r_zsp Reference for spectroscopic redshift (2)
182-184 I3 --- NIR [0/6] Number of bands with infrared excess
186-191 F6.2 --- alp1 ?=0.00 Relative amplitude of cirrus
component at 8um
(s.t. alp1+alp2+alp3+alp4=1)
193-198 F6.2 --- alp2 ?=0.00 Relative amplitude of M82
starburst component at 8um
200-205 F6.2 --- alp3 ?=0.00 Relative amplitude of A220
component at 8um
207-212 F6.2 --- alp4 ?=0.00 Relative amplitude of AGN dust
torus component at 8um
214-223 F10.3 --- errIR3 ?=0.000 Reduced chiν2 of
infrared template fit
225-232 F8.2 [Lsun] logLcirr ?=0.00 Cirrus component luminosity
(1-1000um)
234-241 F8.2 [Lsun] logLsb ?=0.00 M82 starburst component luminosity
243-250 F8.2 [Lsun] logLAGN ?=0.00 AGN dust torus component luminosity
252-259 F8.2 [Lsun] logLA220 ?=0.00 A220 component luminosity,
261-268 F8.2 [Lsun] logLIR ?=0.00 Infrared luminosity,
272 I1 --- IRt [1/6] IR template type (3)
273-278 F6.2 [mJy] logS70 ?=0.00 Predicted flux density at 70um
280-285 F6.2 [mJy] logS160 ?=0.00 Predicted flux density at 160um
287-292 F6.2 [mJy] logS350 ?=0.00 Predicted flux density at 350um
294-299 F6.2 [mJy] logS450 ?=0.00 Predicted flux density at 450um
301-306 F6.2 [mJy] logS850 ?=0.00 Predicted flux density at 850um
308-313 F6.2 [mJy] logS1250 ?=0.00 Predicted flux density at 1250um
315-320 F6.2 [Lsun] logL3.6 Luminosity at 3.6um
322-327 F6.2 [Msun] logM Stellar mass
329-334 F6.2 [Msun/yr] logSFR ?=-9.99 Star formation rate
336-341 F6.2 [Msun] logMdust ?=0.00 Dust mass
343-1107 85F9.2 --- chi2A ?=99.00 Array of reduced χν2 as
function of alz2, minimized over all
templates, in bins of 0.01 in
log(1+zph), from 0.01 to 0.85
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Note (1): AB magnitudes for XMM-LSS, Vega for all the other regions.
Note (2): Spectroscpic redshift reference as follows:
* N1,N2 regions:
1 = Perez-Fournon et al. (2004, in prep.), from
Rowan-Robinson et al., 2004, Cat. J/MNRAS/351/1290
2 = Serjeant et al. (2004MNRAS.355..813S 2004MNRAS.355..813S), from
Rowan-Robinson et al., 2004, Cat. J/MNRAS/351/1290
3 = La Franca et al. (2005ApJ...635..864L 2005ApJ...635..864L), from
Rowan-Robinson et al., 2004, Cat. J/MNRAS/351/1290
4 = Pozzi et al. (2003MNRAS.343.1348P 2003MNRAS.343.1348P), from
Rowan-Robinson et al., 2004, Cat. J/MNRAS/351/1290
5 = NED, http://nedwww.ipac.caltech.edu/ , from
Rowan-Robinson et al., 2004, Cat. J/MNRAS/351/1290
6 = Morel et al. (2001MNRAS.327.1187M 2001MNRAS.327.1187M), from
Rowan-Robinson et al., 2004, Cat. J/MNRAS/351/1290
7 = SLOAN Survey, from Rowan-Robinson et al., 2004, Cat. J/MNRAS/351/1290
8 = Willott et al. (2003MNRAS.339..397W 2003MNRAS.339..397W), from
Rowan-Robinson et al., 2004, Cat. J/MNRAS/351/1290
9 = Chapman et al. (2002ApJ...573...66C 2002ApJ...573...66C), Sajina et al.
(2003MNRAS.343.1365S 2003MNRAS.343.1365S), from Rowan-Robinson et al., 2004,
Cat. J/MNRAS/351/1290
11 = Keck redshifts (Berta et al 2007, Cat. J/A+A/467/565)
20 = WIYN redshifts (Trichas et al., in prep.)
25 = GMOS redshifts (Trichas et al., in prep.)
30 = Swinbank et al., 2007, Cat. J/MNRAS/379/1343
* VVDS (3-14 VVDS quality flags) :
3 = 95% confidence
4 = 100% confidence
9 = Single isolated emission line spectra
+10 = a primary QSO target
+210 = secondary QSO identified target
* Lockman region:
-1 = Unobserved (Steffen et al., 2004, Cat. J/AJ/128/1483)
1 = Star-former (Steffen et al., 2004, Cat. J/AJ/128/1483)
2 = Seyfert 2 based on strong [O II] relative to Hβ or strong
[Ne III] relative to [O II] (Steffen et al., 2004,
Cat. J/AJ/128/1483)
3 = Seyfert 2 with [Ne V] or C IV in emission
(Steffen et al., 2004, Cat. J/AJ/128/1483)
4 = Broad-line AGN (FWHM>1000km/s)
(Steffen et al., 2004, Cat. J/AJ/128/1483)
5 = NED, http://nedwww.ipac.caltech.edu/
10 = WIYN, Keck, Gemini redshifts (Smith et al., in prep.)
11 = Keck redshifts (Berta et al., 2007, Cat. J/A+A/467/565)
* XMM, CDFS regions:
5 = NED, http://nedwww.ipac.caltech.edu/
Note (3): IR template type as follows:
1 = dominated by cirrus
2 = M82 starburst
3 = A220 starburst
4 = AGN dust torus
5 = single band excess
6 = no excess
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History:
Copied at http://astro.ic.ac.uk/~mrr/swirephotzcat/
(End) Patricia Vannier [CDS] 16-Dec-2008