Access to Astronomical Catalogues

← Click to display the menu
J/AJ/125/1107       Ultra-deep near-IR observation in HDF-S  (Labbe+, 2003)

Ultradeep near-infrared ISAAC observations of the Hubble Deep Field South: observations, reduction, multicolor catalog, and photometric redshifts. Labbe I., Franx M., Rudnick G., Foerster-Schreiber N.M., Rix H.-W., Moorwood A., Van Dokkum P.G., Van Der Werf P., Rottgering H., Van Starkenburg L., Van De Wel A., Kuijken K., Daddi E. <Astron. J., 125, 1107-1123 (2003)> =2003AJ....125.1107L
ADC_Keywords: Galaxy catalogs ; Galaxies, photometry ; Redshifts Keywords: galaxies: evolution - galaxies: high-redshift - galaxies: photometry Abstract: We present deep near-infrared (NIR) Js-, H-, and Ks-band ISAAC imaging of the Wide Field Planetary Camera 2 (WFPC2) field of the Hubble Deep Field South (HDF-S). The 2.5'x2.5' high Galactic latitude field was observed with the Very Large Telescope under the best seeing conditions, with integration times amounting to 33.6hr in Js, 32.3hr in H, and 35.6hr in Ks. We reach total AB magnitudes for point sources of 26.8, 26.2, and 26.2, respectively (3sigma), which make it the deepest ground-based NIR observation to date and the deepest Ks-band data in any field. The effective seeing of the co-added images is ∼0.45" in Js, ∼0.48" in H, and ∼0.46" in Ks. Using published WFPC2 optical data, we constructed a Ks-limited multicolor catalog containing 833 sources down to Ktots,AB≲26, of which 624 have seven-band optical-to-NIR photometry. These data allow us to select normal galaxies from their rest-frame optical properties to high redshift (z≲4). The observations, data reduction, and properties of the final images are discussed, and we address the detection and photometry procedures that were used in making the catalog. In addition, we present deep number counts, color distributions, and photometric redshifts of the HDF-S galaxies. Description: The high Galactic latitude field of the HDF-S is a natural choice for follow-up in the NIR given the existing ultradeep WFPC2 data in four optical filters. Our NIR imaging consists of a single ISAAC pointing centered on the WFPC2 main field of the HDF-S (RA 22:32:55.464, DE=-60:33:05.01 [J2000.0]) in the Js, H, and Ks filters, which gives good sampling of rest-frame optical wavelengths over the redshift range 1<z<4. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file position.dat 45 833 Positions of the objects photflux.dat 586 833 *Photometric flux catalog, V3.0 (18/01/03) aperture.dat 2478 833 *Aperture photometry, V3.0 (12/12/2002) redshift.dat 36 833 Photometric and spectroscopic redshifts V1.0 lum.dat 98 833 Rest-frame luminosities in Bessell UBV filters
Note on photflux.dat, aperture.dat files: the WFPC2 filters that are used are F300W, F450W, F606W, and F814W, which we will call U300, B450, V606, and I814.
See also: J/A+AS/145/111 : HDF-South catalogue of galaxies (Volonteri+, 2000) J/AJ/119/486 : HDF-S: STIS imaging (Gardner+, 2000) J/AJ/120/2206 : NTT, HDF-S and HDF-N photometric redshifts (Fontana+, 2000) J/AJ/120/2747 : HDF-South WFPC2 observations (Casertano+, 2000) J/ApJ/538/493 : HDF-South NICMOS field (Yahata+, 2000) J/A+A/375/1 : IR observations of Chandra Deep Field + HDFS (Saracco+, 2001) J/AJ/122/2205 : HDF-South K photometric redshift catalog (Rudnick+, 2001) J/A+A/382/513 : Galaxy warps in the HDF North and South (Reshetnikov+, 2002) J/AJ/126/1208 : UVBI magnitudes and redshifts in HDF-South (Sawicki+, 2003) J/MNRAS/355/82 : Morphological analysis of HDF-N and HDF-S (Trujillo+, 2004) J/A+A/440/61 : FORS spectroscopy of HDFS galaxies (Rigopoulou+, 2005) J/AJ/130/1358 : Radio observations of the HDFS region. I (Norris+, 2005) J/A+A/452/119 : EIS: infrared observations of CDF-S and HDF-S (Olsen+, 2006) J/AJ/131/2383 : Photometry and spectroscopy in the HDF-S (Glazebrook+, 2006) J/ApJ/655/51 : HDFS IRAC observations of 2<z<3.5 galaxies (Wuyts+, 2007) Byte-by-byte Description of file: position.dat
Bytes Format Units Label Explanations
1- 10 A10 --- --- [HDFS FIRES] 12- 16 I5 --- [LFR2003] Sequential number 19- 20 I2 h RAh Right ascension (J2000), from NED 22- 23 I2 min RAm Right ascension (J2000), from NED 25- 28 F4.1 s RAs Right ascension (J2000), from NED 30 A1 --- DE- Declination sign (J2000), from NED 31- 32 I2 deg DEd Declination (J2000), from NED 34- 35 I2 arcmin DEm Declination (J2000), from NED 37- 38 I2 arcsec DEs Declination (J2000), from NED 41- 45 A5 --- Type [G Pair Trpl * ] NED type of object
Byte-by-byte Description of file: photflux.dat
Bytes Format Units Label Explanations
1- 7 F7.2 pix Xpos X position in WFPC2 pixel (0.0398"/pix) 9- 15 F7.2 pix Ypos Y position in WFPC2 pixel (0.0398"/pix) 17- 21 I5 --- [LFR2003] Object identification number 24- 29 F6.3 mag Uap1 ?=- U magAB in 0.7" diameter circular aperture 31- 36 F6.3 mag e_Uap1 ?=- rms of Uap1 38- 43 F6.3 mag Bap1 ?=- B magAB in 0.7" diameter circular aperture 45- 50 F6.3 mag e_Bap1 ?=- rms of Bap1 52- 57 F6.3 mag Vap1 ?=- V magAB in 0.7" diameter circular aperture 59- 64 F6.3 mag e_Vap1 ?=- rms of Vap1 66- 71 F6.3 mag Iap1 ?=- I magAB in 0.7" diameter circular aperture 73- 78 F6.3 mag e_Iap1 ?=- rms of Iap1 80- 85 F6.3 mag Jap1 ?=- J magAB in 0.7" diameter circular aperture 87- 92 F6.3 mag e_Jap1 ?=- rms of Jap1 94- 99 F6.3 mag Hap1 ?=- H magAB in 0.7" diameter circular aperture 101-106 F6.3 mag e_Hap1 ?=- rms of Hap1 108-113 F6.3 mag Kap1 ?=- K magAB in 0.7" diameter circular aperture 115-120 F6.3 mag e_Kap1 ?=- rms of Kap1 123-128 F6.3 mag Uap2 ?=- U magAB in 2.0" diameter circular aperture 130-135 F6.3 mag e_Uap2 ?=- rms of Uap2 137-142 F6.3 mag Bap2 ?=- B magAB in 2.0" diameter circular aperture 144-149 F6.3 mag e_Bap2 ?=- rms of Bap2 151-156 F6.3 mag Vap2 ?=- V magAB in 2.0" diameter circular aperture 158-163 F6.3 mag e_Vap2 ?=- rms of Vap2 165-170 F6.3 mag Iap2 ?=- I magAB in 2.0" diameter circular aperture 172-177 F6.3 mag e_Iap2 ?=- rms of Iap2 179-184 F6.3 mag Jap2 ?=- J magAB in 2.0" diameter circular aperture 186-191 F6.3 mag e_Jap2 ?=- rms of Jap2 193-198 F6.3 mag Hap2 ?=- H magAB in 2.0" diameter circular aperture 200-205 F6.3 mag e_Hap2 ?=- rms of Hap2 207-212 F6.3 mag Kap2 ?=- K magAB in 2.0" diameter circular aperture 214-219 F6.3 mag e_Kap2 ?=- rms of Kap2 222-227 F6.3 mag Uiso ?=- U mag(AB) in K-detection isophote (1) 229-234 F6.3 mag e_Uiso ?=- rms of Uiso 236-241 F6.3 mag Biso ?=- B mag(AB) in K-detection isophote (1) 243-248 F6.3 mag e_Biso ?=- rms of Biso 250-255 F6.3 mag Viso ?=- V mag(AB) in K-detection isophote (1) 257-262 F6.3 mag e_Viso ?=- rms of Viso 264-269 F6.3 mag Iiso ?=- I mag(AB) in K-detection isophote (1) 271-276 F6.3 mag e_Iiso ?=- rms of Iiso 278-283 F6.3 mag Jiso ?=- J mag(AB) in K-detection isophote (1) 285-290 F6.3 mag e_Jiso ?=- rms of Jiso 292-297 F6.3 mag Hiso ?=- H mag(AB) in K-detection isophote (1) 299-304 F6.3 mag e_Hiso ?=- rms of Hiso 306-311 F6.3 mag Kiso ?=- K mag(AB) in K-detection isophote (1) 313-318 F6.3 mag e_Kiso ?=- rms of Kiso 321-326 F6.3 mag Ucol ?=- U magAB in custom 'optimal_color' aperture 328-333 F6.3 mag e_Ucol ?=- rms of Ucol 335-340 F6.3 mag Bcol ?=- B magAB in custom 'optimal_color' aperture 342-347 F6.3 mag e_Bcol ?=- rms of Bcol 349-354 F6.3 mag Vcol ?=- V magAB in custom 'optimal_color' aperture 356-361 F6.3 mag e_Vcol ?=- rms of Vcol 363-368 F6.3 mag Icol ?=- I magAB in custom 'optimal_color' aperture 370-375 F6.3 mag e_Icol ?=- rms of Icol 377-382 F6.3 mag Jcol ?=- J magAB in custom 'optimal_color' aperture 384-389 F6.3 mag e_Jcol ?=- rms of Jcol 391-396 F6.3 mag Hcol ?=- H magAB in custom 'optimal_color' aperture 398-403 F6.3 mag e_Hcol ?=- rms of Hcol 405-410 F6.3 mag Kcol ?=- K mag in custom 'optimal_color' aperture 412-417 F6.3 mag e_Kcol ?=- rms of Kcol 420-425 F6.3 mag Ktot ?=- K mag(AB) in 'total' aperture (aperture corrected AUTO) 427-432 F6.3 mag e_Ktot ?=- rms of Ktot 434 I1 --- apcol Integer code indicating aperture used for color measurement 436 I1 --- aptot Integer code indicating aperture used for color measurement 438-442 F5.3 --- totcor Applied aperture correction to Ktot and Ke_tot 444-448 I5 pix Aiso Area within K-detection isophote 450-456 F7.1 pix Aauto Area within AUTO, Kron-like automatic scaling aperture 458-462 F5.2 pix rcol Radius = sqrt(npix/PI) of 'col' aperture 464-468 F5.2 pix rtot Radius = sqrt(npix/PI) of 'tot' aperture 470-474 F5.2 pix Kfwhm Gaussian FWHM in K-band 476-480 F5.3 --- Kcl SExtractor stellar classification index in K-band (1=stellar, 0=extended) 482-486 F5.2 --- Ifwhm Gaussian FWHM of brightest I-band source in K-isophote 488 I1 --- In Number of I-band sources in K-isophote 490-496 F7.2 --- Ix X position in WFPC2 pixels of brightest I-band source 498-504 F7.2 --- Iy Y position in WFPC2 pixels of brightest I-band source 506-510 F5.3 --- wU Average weight (var) in U-band in 0.7" diameter aperture 512-516 F5.3 --- wB Average weight (var) in B-band in 0.7" diameter aperture 518-522 F5.3 --- wV Average weight (var) in V-band in 0.7" diameter aperture 524-528 F5.3 --- wI Average weight (var) in I-band in 0.7" diameter aperture 530-534 F5.3 --- wJ Average weight (var) in J-band in 0.7" diameter aperture 536-540 F5.3 --- wH Average weight (var) in H-band in 0.7" diameter aperture 542-546 F5.3 --- wK Average weight (var) in K-band in 0.7" diameter aperture 548-552 F5.3 --- wmin Minimum weight in w[U-K] 554 I1 --- bl [0/1] Source overlapping with other source 556 I1 --- bs [0/1] Bias problem 558-564 F7.2 pix x3 x position in ISAAC pixels (0.119"/pix): xisaac = xwfpc2/3. + 100. 566-572 F7.2 pix y3 y position in ISAAC pixels (0.119"/pix): xisaac = xwfpc2/3. + 100. 574-578 I5 --- nnID Object identification number of nearest neighbour 580-584 F5.2 pix nnD3 Distance in ISAAC pixels to nearest neighbour 586 I1 --- St [0/1] If (star≡1) then sed best fit with stellar template
Note (1): Isophote corresponds to ∼26.2 magAB/arcsec2
Byte-by-byte Description of file: aperture.dat
Bytes Format Units Label Explanations
1- 7 F7.2 pix X3 X position (1) 9- 15 F7.2 pix Y3 Y position (1) 17- 21 I5 --- [LFR2003] Sequential number 23-197 25F7.3 mag UFlux ?=- U-band flux in 25 apertures (2) 198-372 25F7.3 mag e_UFlux ?=- Mean error on 25 U-band fluxes (2) 374-548 25F7.3 mag BFlux ?=- B-band flux in 25 apertures (2) 549-723 25F7.3 mag e_BFlux ?=- Mean error on 25 B-band fluxes (2) 725-899 25F7.3 mag VFlux ?=- V-band flux in 25 apertures (2) 900-1074 25F7.3 mag e_VFlux ?=- Mean error on 25 V-band fluxes (2) 1076-1250 25F7.3 mag IFlux ?=- I-band flux in 25 apertures (2) 1251-1425 25F7.3 mag e_IFlux ?=- Mean error on 25 I-band fluxes (2) 1427-1601 25F7.3 mag JFlux ?=- J-band flux in 25 apertures (2) 1602-1776 25F7.3 mag e_JFlux ?=- Mean error on 25 J-band fluxes (2) 1778-1952 25F7.3 mag HFlux ?=- H-band flux in 25 apertures (2) 1953-2127 25F7.3 mag e_HFlux ?=- Mean error on 25 H-band fluxes (2) 2129-2303 25F7.3 mag KFlux ?=- K-band flux in 25 apertures (2) 2304-2478 25F7.3 mag e_KFlux ?=- Mean error on 25 K-band fluxes (2)
Note (1): pixel size: 1pix=0.1194" Note (2): The diameters of the 25 circular apertures are, in pixels: 1.9499 3.9057 5.8916 7.8825 9.8793 11.8771 13.8746 15.8732 17.8728 19.8707 21.8704 23.8695 25.8687 27.8685 29.8682 31.8686 33.8673 35.8670 37.8676 39.8673 41.8669 43.8664 45.8660 47.8661 49.8657 i.e. in arcsec: 0.23 0.47 0.70 0.94 1.18 1.42 1.66 1.90 2.13 2.37 2.61 2.85 3.09 3.33 3.57 3.81 4.04 4.28 4.52 4.76 5.00 5.24 5.48 5.72 5.95
Byte-by-byte Description of file: redshift.dat
Bytes Format Units Label Explanations
1- 5 I5 --- [LFR2003] Sequential number (1) 7- 11 F5.2 --- zph Photometric redshift (3) 13- 17 F5.2 --- zphl Lower value of photometric redshift interval (68% confidence) 19- 23 F5.2 --- zphu Upper value of photometric redshift interval (68% confidence) 26- 30 F5.3 --- zsp ?=- Spectroscopic redshift 32- 34 F3.1 --- r_zsp ?=- Spectroscopic redshift references (2) 36 I1 --- St [0/1] 1 if SED is better fit with star (3)
Note (1): Notes on individual objects: * objects 290, 292, and 657 are also observed by 4 * object 686 is also observed by 5 with zspec=0.95 * object 312 encompasses two objects (id=1095 and 1098) from 6.1 with identical zspec. Note (2): Spectroscopic references as follows: 1 = Rigopoulou et al., 2000ApJ...537L..85R 2 = Cristiani et al., 2000A&A...359..489C 3 = Glazebrook, in prep. (from www site) 4 = Rudnick et al., in prep. (in Thesis) 5 = Rigopoulou private comm. 6.1= Vanzella et al., 2002A&A...396..847V 6.4= Dennefeld et al., in prep (presented in Vanzella) Note (3): St is set to 1 when SED is better fit with star; in this case, the photometric redshifts have been multiplied by -1. Some stars were extended and have been reclassified as galaxies: 155, 230, 296, 323; and some stars were saturated, they were classified by hand: 39, 51
Byte-by-byte Description of file: lum.dat
Bytes Format Units Label Explanations
1- 5 I5 --- [LFR2003] Sequential number 8- 16 E9.3 solLum LU Rest-frame luminosity in U band 18- 26 E9.3 solLum LUl Lower value of LU 68% confidence interval 28- 36 E9.3 solLum LUh Upper value of LU 68% confidence interval 39- 47 E9.3 solLum LB Rest-frame luminosity in B band 49- 57 E9.3 solLum LBl Lower value of LB 68% confidence interval 59- 67 E9.3 solLum LBh Upper value of LB 68% confidence interval 70- 78 E9.3 solLum LV Rest-frame luminosity in V band 80- 88 E9.3 solLum LVl Lower value of LV 68% confidence interval 90- 98 E9.3 solLum LVh Upper value of LV 68% confidence interval
History: Copied at http://www.strw.leidenuniv.nl/~fires/data/hdfs/data Fluxes were converted into magnitudes with the formula: mag(AB) = 25. - 2.5log(Flux), and errors on fluxes into mag errors (1.086*σF/F)
(End) Patricia Vannier, Francois Ochsenbein [CDS] 27-Dec-2008
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

catalogue service

© UDS/CNRS

Contact