J/AJ/131/1891 Photometric survey of MS 1054-03 field (Foerster-Schreiber+, 2006)
Faint infrared extragalactic survey: data and source catalog of the
MS 1054-03 field.
Foerster-Schreiber N.M., Franx M., Labbe I., Rudnick G., Van Dokkum P.G.,
Illingworth G.D., Kuijken K., Moorwood A.F.M., Rix H.-W., Roettgering H.,
Van Der Werf P.
<Astron. J., 131, 1891-1913 (2006)>
=2006AJ....131.1891F 2006AJ....131.1891F (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Clusters, galaxy ; Photometry, infrared ; Morphology
Keywords: cosmology: observations - galaxies: evolution - infrared: galaxies
Abstract:
We present deep near-infrared Js-, H-, and Ks-band imaging of a field
around MS 1054-03, a massive cluster at z=0.83. The observations were
carried out with the ISAAC instrument at the ESO Very Large Telescope
(VLT) as part of the Faint Infrared Extragalactic Survey (FIRES). The
total integration time amounts to 25.9hr in Js, 24.4hr in H, and
26.5hr in Ks, divided nearly equally between four pointings covering
5.5'x5.3'. The 3 total limiting AB magnitudes for point sources from
the shallowest to the deepest pointing are Jtots,AB=26.0-26.2,
HtotAB=25.5-25.8, and Ktots,AB=25.3-25.7mag. The effective
spatial resolution of the co-added images has FWHM=0.48", 0.46", and
0.52" in Js, H, and Ks, respectively. We complemented the ISAAC data
with deep optical imaging using existing Hubble Space Telescope WFPC2
mosaics through the F606W and F814W filters and additional U-, B-, and
V-band observations we obtained with the VLT FORS1 instrument. We
constructed a Ks-band-limited multicolor source catalog down to
Ktots,AB∼25mag (∼5σ for point sources). The catalog contains
1858 objects, of which 1663 have eight-band photometry. We describe
the observations, data reduction, source detection, and photometric
measurements method. We also present the number counts, color
distributions, and photometric redshifts zph of the catalog sources.
We find that our Ks-band counts at the faint end 22≲Ks,AB≲25, with
slope dlogN/dm=0.20, lie at the flatter end of published counts in
other deep fields and are consistent with those we derived previously
in the Hubble Deep Field-South (HDF-S), the other FIRES field.
Spectroscopic redshifts zsp are available for ∼330 sources in the
MS 1054-03 field; comparison between zph and zsp shows very good
agreement, with <|zsp-zph|/(1+zsp)≥0.078. The MS 1054-03 field
observations complement our HDF-S data set with a nearly 5 times
larger area at ∼0.7mag brighter limits, providing more robust
statistics for the slightly brighter source populations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 477 1858 Main catalogue parameters (v3.1)
zph.dat 33 1858 Photometric redshifts
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See also:
http://www.strw.leidenuniv.nl/~fires/data/ms1054/data/ : FIRES MS1054-03
Data Archive (Faint InfraRed Extragalactic Survey)
J/ApJS/157/228 : Catalog of galaxy morphology in 4 clusters (Saintonge+ 2005)
J/ApJ/644/30 : HST Observations of 2 high-z clusters (Blakeslee+ 2006)
J/ApJ/661/750 : Photometry and spectroscopy of MS 1054-03 members (Tran+ 2007)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- [FFL2006] Sequential number
6- 12 F7.2 pix xpos X position
14- 20 F7.2 pix ypos Y position
22- 23 I2 h RAh Right ascension (J2000)
24 A1 --- --- [:]
25- 26 I2 min RAm Right ascension (J2000)
27 A1 --- --- [:]
28- 33 F6.3 s RAs Right ascension (J2000)
35 A1 --- DE- Declination sign (J2000)
36- 37 I2 deg DEd Declination (J2000)
38 A1 --- --- [:]
39- 40 I2 arcmin DEm Declination (J2000)
41 A1 --- --- [:]
42- 46 F5.2 arcsec DEs Declination (J2000)
48- 55 F8.4 uJy Ucol ?=-99.0000 Flux in U colour aperture
57- 64 F8.4 uJy e_Ucol ?=-99.0000 rms uncertainty on fcolU
66- 73 F8.4 uJy Bcol ?=-99.0000 Flux in B colour aperture
75- 82 F8.4 uJy e_Bcol ?=-99.0000 rms uncertainty on fcolB
84- 91 F8.4 uJy Vcol ?=-99.0000 Flux in V colour aperture
93-100 F8.4 uJy e_Vcol ?=-99.0000 rms uncertainty on fcolV
102-109 F8.4 uJy V606col ?=-99.0000 Flux in V606 colour aperture
111-118 F8.4 uJy e_V606col ?=-99.0000 rms uncertainty on fcolV606
120-127 F8.4 uJy I814col ?=-99.0000 Flux in I814 colour aperture
129-136 F8.4 uJy e_I814col ?=-99.0000 rms uncertainty on fcolI814
138-146 F9.4 uJy Jcol ?=-99.0000 Flux in Js colour aperture
148-155 F8.4 uJy e_Jcol ?=-99.0000 rms uncertainty on fcolJs
157-165 F9.4 uJy Hcol ?=-99.0000 Flux in H colour aperture
167-174 F8.4 uJy e_Hcol ?=-99.0000 rms uncertainty on fcolH
176-184 F9.4 uJy Kcol ?=-99.0000 Flux in Ks colour aperture
186-193 F8.4 uJy e_Kcol ?=-99.0000 rms uncertainty on fcolKs
195-203 F9.4 uJy Ktot ?=-99.0000 Ks-band flux in total aperture (1)
205-212 F8.4 uJy e_Ktot ?=-99.0000 rms uncertainty on fcolKs
214-221 F8.4 uJy Uiso ?=-99.0000 Flux in U isophotal aperture
223-230 F8.4 uJy e_Uiso ?=-99.0000 rms uncertainty in fisoU
232-239 F8.4 uJy Biso ?=-99.0000 Flux in B isophotal aperture
241-248 F8.4 uJy e_Biso ?=-99.0000 rms uncertainty in fisoB
250-257 F8.4 uJy Viso ?=-99.0000 Flux in V isophotal aperture
259-266 F8.4 uJy e_Viso ?=-99.0000 rms uncertainty in fisoV
268-275 F8.4 uJy V606iso ?=-99.0000 Flux in V606 isophotal aperture
277-284 F8.4 uJy e_V606iso ?=-99.0000 rms uncertainty in fisoV606
286-293 F8.4 uJy I814iso ?=-99.0000 Flux in I814 isophotal aperture
295-302 F8.4 uJy e_I814iso ?=-99.0000 rms uncertainty in fisoI814
304-312 F9.4 uJy Jiso ?=-99.0000 Flux in Js isophotal aperture
314-321 F8.4 uJy e_Jiso ?=-99.0000 rms uncertainty in fisoJs
323-331 F9.4 uJy Hiso ?=-99.0000 Flux in H isophotal aperture
333-340 F8.4 uJy e_Hiso ?=-99.0000 rms uncertainty in fisoH
342-350 F9.4 uJy Kiso ?=-99.0000 Flux in Ks isophotal aperture
352-359 F8.4 uJy e_Kiso ?=-99.0000 rms uncertainty in fisoKs
361-369 F9.4 uJy Kauto ?=-99.0000 Ks-band flux in the Kron-like
autoscaling aperture (2)
371-378 F8.4 uJy e_Kauto ?=-99.0000 rms uncertainty on fautoKs
380 I1 --- apcol [1/4] Type of aperture used for measuring the
colour flux (3)
382 I1 --- aptot [1/2] Type of aperture used for measuring the
total Ks-band flux (4)
384-388 F5.3 --- apcorr Scaling factor corresponding to the aperture
correction applied to the Ks-band flux measured
in the total aperture in order to estimate the
total integrated flux.
390-394 F5.2 pix rcol Circularized radii used for colour fluxes (5)
396-400 F5.2 pix rtot Circularized radii used for total fluxes (5)
402-409 F8.2 pix2 Aiso Area of the aperture enclosed within the
mu(Ks,AB)=24.8mag/arcsec2 isophote (6)
411-418 F8.2 pix2 Aauto Area of the Kron-like autoscaling aperture (6)
420-424 F5.2 pix FWHMKs FWHM of source from Ks-band detection map (7)
426-431 F6.2 pix FWHMI FWHM of source from I814-band map (7)
433-436 F4.2 --- w_Ucol
438-441 F4.2 --- w_Bcol Average of the effective weight in B band (8)
443-446 F4.2 --- w_Vcol Average of the effective weight in V band (8)
448-451 F4.2 --- w_V606col Average of the effective weight in V606 band (8)
453-456 F4.2 --- w_I814col Average of the effective weight in I814 band (8)
458-461 F4.2 --- w_Jcol Average of the effective weight in Js band (8)
463-466 F4.2 --- w_Hcol Average of the effective weight in H band (8)
468-471 F4.2 --- w_Kcol Average of the effective weight in Ks band (8)
473 I1 --- bias [0/1] Bias flag (9)
475 I1 --- blended [0/1] Blend flag (10)
477 I1 --- star [0/1] Star flag (11)
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Note (1): Ks-band flux in the total aperture scaled by the aperture correction.
Note (2): Ks-band flux in the Kron-like autoscaling aperture based
on the light distribution in the Ks-band detection map
(the MAG_AUTO computed by SExtractor).
Note (3): Aperture for colour flux flag as follows:
1 = minimum circular aperture considered with diameter d=1.0 arcsec
used whenever the isophotal aperture is smaller.
2 = maximum circular aperture considered with diameter d=2.0 arcsec
used whenever the isophotal aperture is larger.
3 = isophotal aperture defined by the surface brightness threshold
of mu(Ks,AB)=24.8mag/arcsec2 in the Ks-band detection map.
4 = circular aperture with diameter d=sqrt(Aiso/PI)/s where s=1.4
is the aperture reduction factor applied for blended sources.
Note (4): Aperture for total Ks-band flux flag as follows:
1 = Kron-like autoscaling aperture based on the light distribution
in the Ks-band detection map.
2 = Colour aperture used in the case of blended sources.
Note (5): Circularized radii r=sqrt(A/PI) from the area of the apertures
used to measure the colour and total fluxes.
Units are pixels in the rectified images.
Note (6): Units are squared pixels in the rectified images.
Note (7): FWHM of sources assuming a Gaussian profile from the Ks-band
detection map, and similarly from the non-PSF-matched I814 map
filtered with a kernel approximating the PSF with FWHM=0.22arcsec.
Units are pixels in the rectified images.
Note (8): Average of the effective weight in each of the U, B, V, V606,
I814, Js, H, Ks bandpasses within the point-source aperture for
the PSF-matched set of maps (d=1.5xFWHM=1.0arcsec).
The weights are normalized to a maximum of 1 over the maps.
Note (9): 1 if the Kron-like autoscaling aperture contains >10% of bad
pixels or if the flux measurement within this aperture is
affected by neighbouring sources as determined from the light
distribution in the Ks-band detection map.
Note (10): 1 if the source overlaps with adjacent objects based on
the Ks-band detection map.
Note (11): 1 if the source satisfies all the star identification criteria
(see Section 6 of the paper).
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Byte-by-byte Description of file: zph.dat
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Bytes Format Units Label Explanations
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3- 6 I4 --- [FFL2006] Sequential number
11- 15 F5.3 --- zph Photometric redshift
19- 24 F6.3 --- e_zph Associated 68% confidence intervals
(lower limit) (1)
28- 33 F6.3 --- E_zph Associated 68% confidence intervals
(upper limit) (1)
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Note (1): Associated 68% confidence intervals (given as zph, -zphl68/+zphu68)
derived as described by Rudnick et al. 2001, Cat. J/AJ/122/2205
and Rudnick et al. (2003ApJ...599..847R 2003ApJ...599..847R).
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History:
Copied at http://www.strw.leidenuniv.nl/~fires/
(End) Patricia Vannier [CDS] 21-Sep-2007