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J/AJ/132/1023   U-band dropouts in Hubble Ultra Deep Field  (Wadadekar+, 2006)

Faint u-band dropouts in the WFPC2 parallels of the Hubble Ultra Deep Field. Wadadekar Y., Casertano S., De Mello D. <Astron. J., 132, 1023-1034 (2006)> =2006AJ....132.1023W
ADC_Keywords: Surveys ; Galaxies, photometry ; Ultraviolet Keywords: cosmology: observations - galaxies: distances and redshifts - galaxies: evolution - galaxies: statistics - ultraviolet: galaxies Abstract: We combine data from the extremely deep Hubble Space Telescope U (F300W) image, obtained using WFPC2 as part of the parallel observations of the Hubble Ultra Deep Field campaign, with BVi images from the Great Observatories Origins Deep Survey to identify a sample of Lyman break galaxies in the redshift range 2.0≤z≤3.5. We use recent stellar population synthesis models with a wide variety of ages, metallicities, redshifts, and dust content, and a detailed representation of the HI cosmic opacity as a function of redshift to model the colors of galaxies in our combination of WFPC2 and ACS filters. Using these models, we derive improved color selection criteria that provide a clean selection of relatively unobscured star-forming galaxies in this redshift range. Our WFPC2 F300W image is the deepest image ever obtained at that wavelength. The 10 limiting magnitude measured over 0.2arcsec2 is 27.5mag in the WFPC2 F300W image, about 0.5mag deeper than the F300W image in the Hubble Deep Field (HDF)-North. Description: In this paper we analyze the HUDF WFPC2 (F300W) parallels that overlap substantially over the GOODS-S area, i.e., the epoch1-orient 310/314 image (see Fig. 1 of de Mello et al. (2006AJ....131..216D) for a finding chart of this area relative to the GOODS-S field). The other WFPC2 parallel field (epoch 2-orient 40/44) overlaps with the Galaxy Evolution from Morphology and SEDs (Rix et al., 2004ApJS..152..163R) survey area; because of the lack of B-band data this region cannot be studied in the same way and is not considered further in this paper. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 99 125 U band dropouts
See also: J/ApJ/653/53 : z∼6 galaxies UV luminosity function (Bouwens+, 2006) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 9 F9.6 deg RAdeg Right Ascension in decimal degrees (J2000) 11- 20 F10.6 deg DEdeg Declination in decimal degrees (J2000) 22 A1 --- l_Umag Limit flag on Umag 23- 27 F5.2 mag Umag The WFPC2/F300W band magnitude (1) 29- 33 F5.2 mag Bmag The ACS/F435W band magnitude (1) 35- 39 F5.2 mag Vmag The ACS/F606W band magnitude (1) 41- 45 F5.2 mag imag The ACS/F775W band magnitude (1) 47 I1 --- Class [1/6] Class (2) 49- 99 A51 --- Comm Additional comments
Note (1): The magnitudes listed are in the AB system. Note (2): Class as follows: 1 = single and compact (clump) 2 = double or multiple clumps (chain) 3 = a clump with a tail (tadpole) 4 = not compact but extended and fuzzy 5 = fuzzy extended and with a more organized disk-like structure 6 = not classified, very faint
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 25-Sep-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

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