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J/ApJ/653/53        z∼6 galaxies UV luminosity function      (Bouwens+, 2006)

Galaxies at z∼6: the UV luminosity function and luminosity density from 506 HUDF, HUDF parallel ACS field, and GOODS i-dropouts. Bouwens R.J., Illingworth G.D., Blakeslee J.P., Franx M. <Astrophys. J., 653, 53-85 (2006)> =2006ApJ...653...53B
ADC_Keywords: Galaxies, photometry ; Ultraviolet Keywords: galaxies: evolution - galaxies: high-redshift Abstract: We have detected 506 i-dropouts (z∼6 galaxies) in deep, wide-area HST ACS fields: HUDF, enhanced GOODS, and HUDF parallel ACS fields (HUDF-Ps). The contamination levels are ≲8% (i.e., ≳92% are at z∼6). With these samples, we present the most comprehensive, quantitative analyses of z∼6 galaxies yet and provide optimal measures of the UV luminosity function (LF) and luminosity density at z∼6, and their evolution to z∼3. We redetermine the size and color evolution from z∼6 to z∼3. Field-to-field variations (cosmic variance), completeness, flux, and contamination corrections are modeled systematically and quantitatively. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 61 43 A sample of intrinsic red (i-z)>1, (z-J)>0.8 (AB scale) objects identified in the CDF-S GOODS field table3.dat 77 20 i-z>1.3 point-like (stellar) sources not included in our i-dropout compilation table4.dat 78 122 UDF i-dropout sample table5.dat 67 68 HUDF-Ps i-dropout sample table6.dat 78 332 GOODS i-dropout sample table18.dat 77 15 i-dropouts in the HUDF which were blended with foreground galaxies in our main HUDF catalog
See also: II/261 : GOODS initial results (Giavalisco+, 2004) J/AJ/132/1023 : U-band dropouts in Hubble Ultra Deep Field (Wadadekar+, 2006) J/AJ/132/1729 : Hubble Ultra Deep Field BVI-dropout sources (Beckwith+, 2006) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Hour of Right Ascension (J2000) (1) 4- 5 I2 min RAm Minute of Right Ascension (J2000) (1) 7- 11 F5.2 s RAs Second of Right Ascension (J2000) (1) 13 A1 --- DE- Sign of the Declination (J2000) (1) 14- 15 I2 deg DEd Degree of Declination (J2000) (1) 17- 18 I2 arcmin DEm Arcminute of Declination (J2000) (1) 20- 23 F4.1 arcsec DEs Arcsecond of Declination (J2000) (1) 25- 29 F5.2 mag zmag The z band (AB) magnitude 31- 34 F4.2 mag e_zmag Error in zmag 36 A1 --- l_i-z Limit on i-z 37- 39 F3.1 mag i-z The (i-z) (AB) color index 41 A1 --- l_v-z Limit on v-z 42- 44 F3.1 mag v-z The (v-z) (AB) color index 46 A1 --- l_z-J Limit on z-J 47- 50 F4.1 mag z-J ? The (z-J) (AB) color index (2) 52 A1 --- l_z-K Limit on z-K 53- 56 F4.1 mag z-K ? The (z-K_s_) (AB) color index (2) 58- 61 F4.2 arcsec rhl The half-light radius
Note (1): These objects are most likely low-redshift interlopers and were helpful in optimizing our selection cuts to avoid contamination. Objects identified as GOODS JHHMMSS.ss+DDMMSS.s in Simbad Note (2): The z850-J and z850-Ks colors were measured with respect to the J+Ks ISAAC imaging (Section 2.3: Vandame et al. 2006, in prep.)
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 15 A15 --- [BIB2006] Object ID 17- 18 I2 h RAh Hour of Right Ascension (J2000) 20- 21 I2 min RAm Minute of Right Ascension (J2000) 23- 27 F5.2 s RAs Second of Right Ascension (J2000) 29 A1 --- DE- Sign of the Declination (J2000) 30- 31 I2 deg DEd Degree of Declination (J2000) 33- 34 I2 arcmin DEm Arcminute of Declination (J2000) 36- 39 F4.1 arcsec DEs Arcsecond of Declination (J2000) 41- 45 F5.2 mag zmag The z band (AB) magnitude 47- 50 F4.2 mag e_zmag Error in zmag 52 A1 --- l_i-z Limit on i-z 53- 55 F3.1 mag i-z The (i-z) (AB) color index 57 A1 --- l_z-J Limit on z-J 58- 61 F4.1 mag z-J ? The (z-J) (AB) color index 63 A1 --- l_z-K Limit on z-K 64- 67 F4.1 mag z-K ? The (z-Ks) (AB) color index 69- 72 F4.2 --- S/G The star/galaxy separator (1) 74- 77 F4.2 arcsec rhl The half-light radius
Note (1): SExtractor stellarity parameter, for which 0 = extended object, and 1 = point source (objects with S/G>0.75 and z850,AB<26.8 are taken to be stars and thus not included here).
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 13 A13 --- [BIB2006] Object ID 14 A1 --- n_[BIB2006] [*] Contamination flag (1) 16- 17 I2 h RAh Hour of Right Ascension (J2000) 19- 20 I2 min RAm Minute of Right Ascension (J2000) 22- 26 F5.2 s RAs Second of Right Ascension (J2000) 28 A1 --- DE- Sign of the Declination (J2000) 29- 30 I2 deg DEd Degree of Declination (J2000) 32- 33 I2 arcmin DEm Arcminute of Declination (J2000) 35- 38 F4.1 arcsec DEs Arcsecond of Declination (J2000) 40- 44 F5.2 mag zmag The z band (AB) magnitude 46- 49 F4.2 mag e_zmag Error in zmag 51 A1 --- l_i-z Limit on (i-z) 52- 54 F3.1 mag i-z The (i-z) color index (AB) (2) 56 A1 --- l_z-J Limit on z-J 57- 60 F4.1 mag z-J ? The (z-J) index (AB) (2) 62 A1 --- l_J-H Limit on J-H 63- 66 F4.1 mag J-H ? The (J-H) index (AB) (2) 68 A1 --- n_J-H [n] Flag on J-H (3) 70- 73 F4.2 --- S/G The star/galaxy separator (4) 75- 78 F4.2 arcsec rhl The half-light radius
Note (1): * = the z-Ks colors indicate that this object is likely a low-redshift contaminant. Note (2): Typical errors on the (i-z), (z-J), and (J-H) colors were 0.3, 0.2-0.3, and 0.3-0.4 magnitudes, respectively. Note (3): n = not detected at 2σ in either J or H, making their colors very uncertain. Objects with NULL J-H values were not observed in J or H. Note (4): SExtractor stellarity parameter, for which 0 = extended object, and 1 = point source (objects with S/G>0.75 and z850,AB<28.4 are taken to be stars and thus not included here).
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 17 A17 --- [BIB2006] Object ID 19- 20 I2 h RAh Hour of Right Ascension (J2000) 22- 23 I2 min RAm Minute of Right Ascension (J2000) 25- 29 F5.2 s RAs Second of Right Ascension (J2000) 31 A1 --- DE- Sign of the Declination (J2000) 32- 33 I2 deg DEd Degree of Declination (J2000) 35- 36 I2 arcmin DEm Arcminute of Declination (J2000) 38- 41 F4.1 arcsec DEs Arcsecond of Declination (J2000) 43- 47 F5.2 mag zmag The z band (AB) magnitude 49- 52 F4.2 mag e_zmag Error in zmag 54 A1 --- l_i-z Limit on i-z 55- 57 F3.1 mag i-z The (i-z) (AB) color index (1) 59- 62 F4.2 --- S/G The star/galaxy separator (2) 64- 67 F4.2 arcsec rhl The half-light radius
Note (1): Typical errors on the (i-z) colors were 0.3 magnitudes. Note (2): SExtractor stellarity parameter, for which 0 = extended object, and 1 = point source (objects with S/G >0.75 and z850,AB<27.5 are taken to be stars and thus not included here).
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 15 A15 --- [BIB2006] Object ID 16 A1 --- n_[BIB2006] [*] Contamination flag (1) 18- 19 I2 h RAh Hour of Right Ascension (J2000) 21- 22 I2 min RAm Minute of Right Ascension (J2000) 24- 28 F5.2 s RAs Second of Right Ascension (J2000) 30 A1 --- DE- Sign of the Declination (J2000) 31- 32 I2 deg DEd Degree of Declination (J2000) 34- 35 I2 arcmin DEm Arcminute of Declination (J2000) 37- 40 F4.1 arcsec DEs Arcsecond of Declination (J2000) 42- 46 F5.2 mag zmag The z band (AB) magnitude 48- 51 F4.2 mag e_zmag Error in zmag 53 A1 --- l_i-z Limit on i-z 54- 56 F3.1 mag i-z The (i-z) (AB) color index 58 A1 --- l_z-J Limit on z-J 59- 62 F4.1 mag z-J ? The (z-J) (AB) color index 64 A1 --- l_z-K Limit on z-K 65- 68 F4.1 mag z-K ? The (z-Ks) (AB) color index 70- 73 F4.2 --- S/G The star/galaxy separator (2) 75- 78 F4.2 arcsec rhl The half-light radius
Note (1): * = the z-Ks colors indicate that this object is likely a low-redshift contaminant. Note (2): SExtractor stellarity parameter, for which 0 = extended object, and 1 = point source (objects with S/G > 0.75 and z850,AB < 26.8 are taken to be stars and thus not included here).
Byte-by-byte Description of file: table18.dat
Bytes Format Units Label Explanations
1- 13 A13 --- [BIB2006] Object ID (1) 15- 16 I2 h RAh Hour of Right Ascension (J2000) 18- 19 I2 min RAm Minute of Right Ascension (J2000) 21- 25 F5.2 s RAs Second of Right Ascension (J2000) 27 A1 --- DE- Sign of the Declination (J2000) 28- 29 I2 deg DEd Degree of Declination (J2000) 31- 32 I2 arcmin DEm Arcminute of Declination (J2000) 34- 37 F4.1 arcsec DEs Arcsecond of Declination (J2000) 39- 43 F5.2 mag zmag The z band (AB) magnitude 45- 48 F4.2 mag e_zmag Error in zmag 50 A1 --- l_i-z Limit on i-z 51- 53 F3.1 mag i-z The (i-z) (AB) color index (2) 55 A1 --- l_z-J Limit on z-J 56- 59 F4.1 mag z-J ? The (z-J) (AB) color index (2) 61 A1 --- l_J-H Limit on J-H 62- 65 F4.1 mag J-H ? The (J-H) (AB) color index (2) 67 A1 --- n_J-H [n] Flag on J-H (3) 69- 72 F4.2 --- S/G The star/galaxy separator (4) 74- 77 F4.2 arcsec rhl The half-light radius
Note (1): Objects in this catalog were found (Appendix D.1) using a more aggressive splitting parameter (DEBLEND_MINCONT=0.0001) than used in the main catalog (DEBLEND_MINCONT=0.15: see Section 3). Adding these sources to our main catalogs would increase the total of i-dropouts in the HUDF by ∼7%. Note (2): Typical errors on the (i-z), (z-J), and (J-H) colors were 0.3, 0.2-0.3, and 0.3-0.4 magnitudes, respectively. Note (3): n = not detected at 2σ in either J or H, making their colors very uncertain. Objects with NULL J-H values were not observed in J or H. Note (4): SExtractor stellarity parameter, for which 0 = extended object, and 1 = point source (objects with S/G>0.75 and z850,AB<28.4 are taken to be stars and thus not included here).
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 31-Jul-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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