J/ApJS/150/1 VV29 and NGC 4676 HST photometry (Benitez+, 2004)
Faint galaxies in Deep Advanced Camera for Surveys observations.
Benitez N., Ford H., Bouwens R., Menanteau F., Blakeslee J., Gronwall C.,
Illingworth G., Meurer G., Broadhurst T.J., Clampin M., Franx M.,
Hartig G.F., Magee D., Sirianni M., Ardila D.R., Bartko F., Brown R.A.,
Burrows C.J., Cheng E.S., Cross N.J.G., Feldman P.D., Golimowski D.A.,
Infante L., Kimble R.A., Krist J.E., Lesser M.P., Levay Z., Martel A.R.,
Miley G.K., Postman M., Rosati P., Sparks W.B., Tran H.D., Tsvetanov Z.I.,
White R.L., Zheng W.
<Astrophys. J. Suppl. Ser., 150, 1 (2004)>
=2004ApJS..150....1B 2004ApJS..150....1B (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, photometry ; Redshifts
Keywords: galaxies: evolution - galaxies: fundamental parameters -
galaxies: high-redshift - galaxies: photometry -
techniques: photometric
Abstract:
We present the analysis of the faint galaxy population in the Advanced
Camera for Surveys (ACS) Early Release Observation fields VV 29
(UGC 10214) and NGC 4676. These observations cover a total area of
26.3arcmin2 and have depths close to that of the Hubble Deep Fields
in the deepest part of the VV 29 image, with 10σ detection
limits for point sources of 27.8, 27.6, and 27.2 AB magnitudes in the
gF475W, VF606W, and IF814W bands, respectively.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table4a.dat 84 5712 Redshift catalog in the VV 29 field
table4b.dat 144 5712 Photometric catalog in the VV 29 field
table5a.dat 84 3254 Redshift catalog in the NGC 4676 field
table5b.dat 144 3254 Photometric catalog in the NGC 4676 field
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4a.dat table5a.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- ID SExtractor identification number (G1)
6- 7 I2 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)
17 A1 --- DE- Sign of Declination (J2000)
18- 19 I2 deg DEd Degree of Declination (J2000)
21- 22 I2 arcmin DEm Arcminute of Declination (J2000)
24- 27 F4.1 arcsec DEs Arcsecond of Declination (J2000)
29- 34 F6.1 pix Xpix X pixel coordinate
36- 41 F6.1 pix Ypix Y pixel coordinate
43- 46 F4.2 --- B-z Bayesian photometric redshift
48- 51 F4.2 --- B-zmin The 95% lower confidence redshift interval
53- 56 F4.2 --- B-zmax The 95% upper confidence redshift interval
58- 61 F4.2 --- B-Type Bayesian spectral type (1)
63- 68 F6.4 --- B-Odds Bayesian odds (2)
70- 73 F4.2 --- ML-z Maximum likelihood redshift
75- 78 F4.2 --- ML-Type Maximum likelihood spectral type (1)
80- 84 F5.2 --- ML-chi2 The χ2 for best maximum likelihood fit
--------------------------------------------------------------------------------
Note (1): the types are:
El(1), Sbc(2), Scd(3), Im(4), SB3(5), and SB2(6).
Note (2):
It is the integral of the redshift probability distribution in a
region of about 0.2(1+zB). If close to 1, it means that the redshift
probability is narrow and has a single peak. Very low values of the
odds indicate that the color/magnitude information is almost useless
to estimate the redshift. Photometric redshifts with values <0.9 are
unreliable.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4b.dat table5b.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- ID SExtractor identification number (G1)
6- 7 I2 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)
17 A1 --- DE- Sign of Declination (J2000)
18- 19 I2 deg DEd Degree of Declination (J2000)
21- 22 I2 arcmin DEm Arcminute of Declination (J2000)
24- 27 F4.1 arcsec DEs Arcsecond of Declination (J2000)
29- 34 F6.1 pix Xpix X pixel coordinate
36- 41 F6.1 pix Ypix Y pixel coordinate
43- 48 F6.2 mag gauto ?=99 F475W band SExtractor MAG_AUTO AB magnitude
52- 55 F4.2 mag e_gauto Error in gauto
57- 62 F6.2 mag Vauto ?=99 F606W band SExtractor MAG_AUTO AB magnitude
66- 69 F4.2 mag e_Vauto Error in Vauto
71- 76 F6.2 mag Iauto ?=99 F814W band SExtractor MAG_AUTO AB magnitude
80- 83 F4.2 mag e_Iauto Error in Iauto
85- 90 F6.2 mag giso ?=99 F475W band SExtractor MAG_ISO AB magnitude
94- 97 F4.2 mag e_giso Error in giso
99-104 F6.2 mag Viso ?=99 F606W band SExtractor MAG_ISO AB magnitude
108-111 F4.2 mag e_Viso Error in Viso
113-118 F6.2 mag Iiso ?=99 F814W band SExtractor MAG_ISO AB magnitude
122-125 F4.2 mag e_Iiso Error in Iiso
127-133 F7.2 pix FWHM SExtractor Full Width at Half Maximum (1)
135-138 F4.2 --- Class SExtractor star/galaxy classification (2)
140-142 I3 --- SExFlag SExtractor detection flag
144 I1 --- MFlag Mask flag (3)
--------------------------------------------------------------------------------
Note (1): Where scale = 0.05 arcsec/pixel.
Note (2): We consider as stars or point sources all objects which have
a value of this parameter ≥0.94, and set all their photometric
redshift parameters to zero.
Note (3): Mask flags are:
1 = masked out due to being close to bright objects;
0 = not masked.
--------------------------------------------------------------------------------
Global notes:
Note (G1): in Simbad, the designations are:
In table4.dat, [BFB2004] VV 29 NNNN
In table5.dat, [BFB2004] NGC 4676 NNNN
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 23-Jan-2004