J/ApJ/612/L93 Candidates of z~5.5-7 galaxies in the HST-UDF (Yan+, 2004) ================================================================================ Candidates of z~5.5-7 galaxies in the Hubble Space Telescope Ultra Deep Field. Yan H., Windhorst R.A. =2004ApJ...612L..93Y ================================================================================ ADC_Keywords: Galaxies, photometry Keywords: cosmology: observations - early universe - galaxies: evolution - galaxies: high-redshift - galaxies: luminosity function, mass function Abstract: We report results from our z~5.5-7 galaxy search in the Hubble Space Telescope Ultra Deep Field (UDF). Using the 400 orbit of Advanced Camera for Surveys data, we found 108 plausible 5.5<=z<=6.5 (or z~6 for short) candidates to m_AB_(z_850_)=30.0mag. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 89 108 Photometric properties of the z~6 candidates -------------------------------------------------------------------------------- See also: II/258 : Hubble Ultra Deep Field Catalog (UDF) (STScI, 2004) Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 A3 --- [YW2004] Candidate identification number (1) 5 A1 --- f_[YW2004] [b] Indicates a member of a multiple system (2) 7 I1 h RAh Hour of Right Ascension (J2000) 9- 10 I2 min RAm Minute of Right Ascension (J2000) 12- 16 F5.2 s RAs Second of Right Ascension (J2000) 18 A1 --- DE- Sign of the Declination (J2000) 19- 20 I2 deg DEd Degree of Declination (J2000) 22- 23 I2 arcmin DEm Arcminute of Declination (J2000) 25- 29 F5.2 arcsec DEs Arcsecond of Declination (J2000) 31- 34 F4.2 --- S/G Star/galaxy separation code (3) 36- 39 F4.1 pix FWHM Full-Width at Half-Maximum (4) 41- 45 F5.2 mag imag ? The ACS F775W filter magnitude 47- 50 F4.2 mag e_imag ? Uncertainty in imag 52- 56 F5.2 mag zmag The ACS F850LP filter magnitude 58- 61 F4.2 mag e_zmag Uncertainty in zmag 63- 66 F4.2 mag i-z ? The (i-z) color index 68- 72 F5.2 mag Jmag ? The NICMOS F110W filter magnitude 74- 77 F4.2 mag e_Jmag ? Uncertainty in Jmag 79- 83 F5.2 mag Hmag ? The NICMOS F160W filter magnitude 85- 88 F4.2 mag e_Hmag ? Uncertainty in Hmag -------------------------------------------------------------------------------- Note (1): Photometric properties of the 108 z~6 candidates discovered in the UDF. The first 12 objects are the candidates that have been identified in the UDF NICMOS images. Note (2): There are six multiple systems among these candidates, four of which are within the NICMOS UDF area. The members of these systems have their ID in bold face. Note that object 1a is a known galaxy at z=5.83 Note (3): With 0 for the most extended sources and 1 for the most compact sources. Note (4): Derived by assuming a Gaussian core. -------------------------------------------------------------------------------- Table 2: Photometric properties of the three z_850_ dropouts found in the UDF NICMOS field ------------------------------------------------------------------------ ID RA (J2000) DE z_850_(limit) J_110_ H_160_ mag mag mag ------------------------------------------------------------------------ 1 3 32 38.74 -27 48 39.97 28.97 26.58+/-0.05 24.68+/-0.01 2 3 32 42.88 -27 48 09.52 28.52 27.01+/-0.10 24.63+/-0.02 3 3 32 42.56 -27 46 56.69 28.45 27.30+/-0.06 26.11+/-0.02 ------------------------------------------------------------------------ History: From electronic version of the journal ================================================================================ (End) Greg Schwarz [AAS], Marianne Brouty [CDS] 08-Jun-2005