J/A+A/449/951 GOODS-MUSIC sample: multicolour catalog (Grazian+, 2006)
The GOODS-MUSIC sample:
a multicolour catalog of near-IR selected galaxies in the GOODS-South field.
Grazian A., Fontana A., De Santis C., Nonino M., Salimbeni S., Giallongo E.,
Cristiani S., Gallozzi S., Vanzella E.
<Astron. Astrophys. 449, 951 (2006)>
=2006A&A...449..951G 2006A&A...449..951G
ADC_Keywords: Surveys ; Galaxies, photometry ; Redshifts
Keywords: galaxies: distances and redshifts - galaxies: evolution -
galaxies: high redshift - galaxies: photometry -
methods: data analysis - techniques: image processing
Abstract:
We present a high quality multiwavelength (from 0.3 to 8.0 micron)
catalog of the large and deep area in the GOODS Southern Field covered
by the deep near-IR observations obtained with the ESO VLT. The
catalog is entirely based on public data: in our analysis, we have
included the F435W, F606W, F775W and F850LP ACS images, the JHKs VLT
data, the Spitzer data provided by IRAC instrument (3.6, 4.5, 5.8 and
8.0 micron), and publicly available U-band data from the 2.2ESO and
VLT-VIMOS. We describe in detail the procedures adopted to obtain this
multiwavelength catalog. In particular, we developed a specific
software for the accurate "PSF-matching" of space and ground-based
images of different resolution and depth (ConvPhot), of which we
analyse performances and limitations. We have included both
z-selected, as well as Ks-selected objects, yielding a unique,
self-consistent catalog. The largest fraction of the sample is 90%
complete at z∼26 or Ks∼23.8 (AB scale). Finally, we cross-correlated
our data with all the spectroscopic catalogs available to date,
assigning a spectroscopic redshift to more than 1000 sources. The
final catalog is made up of 14847 objects, at least 72 of which are
known stars, 68 are AGNs, and 928 galaxies with spectroscopic redshift
(668 galaxies with reliable redshift determination). We applied our
photometric redshift code to this data set, and the comparison with
the spectroscopic sample shows that the quality of the resulting
photometric redshifts is excellent, with an average scatter of only
0.06. The full catalog, which we named GOODS-MUSIC (MUltiwavelength
Southern Infrared Catalog), including the spectroscopic information,
is made publicly available, together with the software specifically
designed to this end.
Description:
The GOODS-MUSIC multi-wavelength catalog provides photometric and
spectroscopic information for galaxies in the GOODS Southern field. It
includes two U images obtained with the ESO 2.2m telescope and one U
band image from VLT-VIMOS, the ACS-HST images in four optical
(B,V,i,z) bands, the VLT-ISAAC J, H, and Ks bands as well as the
Spitzer images in at 3.5, 4.5, 5.8, and 8 micron. Most of these images
have been made publicly available in the coadded version by the GOODS
team, while the U band data were retrieved in raw format and reduced
by our team. We also collected all the available spectroscopic
information from public spectroscopic surveys and cross-correlated the
spectroscopic redshifts with our photometric catalog. For the
unobserved fraction of the objects, we applied our photometric
redshift code to obtain well-calibrated photometric redshifts. The
final catalog is made up of 14847 objects, with at least 72 known
stars, 68 AGNs, and 928 galaxies with spectroscopic redshift (668
galaxies with reliable redshift determination).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table5.dat 90 18296 Coordinates, spectroscopy and magnitude limits
table6.dat 110 18296 Optical photometry
table7.dat 110 18296 Infrared photometry
--------------------------------------------------------------------------------
See also:
II/261 : GOODS initial results (Giavalisco+, 2004)
J/A+A/434/53 : GOODS-South Field redshifts (Vanzella+, 2005)
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- Seq Identification number
7- 15 F9.6 deg RAdeg Right ascension, in decimal degrees (J2000)
17- 26 F10.6 deg DEdeg Declination, in decimal degrees (J2000)
28- 33 F6.3 --- zspec ?=-1.0 Spectroscopic Redshift
35- 43 A9 --- SpClass Spectroscopic class (1)
45- 54 A10 --- r_SpClass Spectroscopic Catalog (2)
56- 57 I2 --- q_zspec ?=99 Quality of Spectroscopic Redshift (3)
59- 64 F6.3 --- zphot ?=-1.0 Photometric redshift
66 I1 --- POS Position flag (4)
68 I1 --- star Star flag (5)
70 I1 --- AGN AGN flag (6)
72- 77 F6.3 --- zlim z band magnitude limit (7)
79- 84 F6.3 mag kslim Ks band magnitude limit (8)
86- 90 F5.3 --- S/G Star-galaxy classifier of SExtractor
(0 for galaxy, 1 for star)
--------------------------------------------------------------------------------
Note (1): Spectroscopic classification as follows:
GALAXY = galaxy
EARLY = early-type galaxy
EMISSION = late-type galaxy
COMPOSITE = early+late type galaxy
AGN = Active Galactic Nucleus
STAR = star
UNKNOWN = spectrum not available
Note (2): Reference spectroscopic catalog as follows:
GOODSV1.0 = Vanzella et al., 2005, Cat. J/A+A/434/53
K20 = Mignoli et al., 2005, Cat. J/A+A/437/883
CXO-CDFS = Szokoly et al., 2004, Cat. J/ApJS/155/271
VVDS = Le Fevre et al., 2004A&A...428..1043L
MASTER = http://www.eso.org/science/goods/spectroscopy/CDFS_Mastercat/
LCIRS = Doherty et al., 2005MNRAS.361..525D 2005MNRAS.361..525D
COMBO-17 = Wolf et al., 2004A&A...421..913W 2004A&A...421..913W, Cat. II/253
DADDI = Daddi et al., 2005ApJ...626..680D 2005ApJ...626..680D
SIC = Cristiani et al., 2000A&A...359..489C 2000A&A...359..489C
UNKNOWN = spectrum not available.
Note (3): Quality of spectroscopic redshift as follows:
0 = very good
1 = good
2 = uncertain
3 = bad quality
99 = not available
Note (4): Position flag as follows:
1 = inside GOODS-MUSIC area
0 = outside GOODS-MUSIC area
Note (5): Star flag on the basis of spectroscopy, morphology,
and BzK colours as follows:
1 = probable star
0 = no star (A galaxy should have star flag=0 and AGN flag=0)
Note (6): AGN flag, based only on spectroscopy, as follows:
1 = probable AGN
0 = no AGN (A galaxy should have star flag=0 and AGN flag=0)
Note (7): Magnitude limit in the z band in 1arcsec2 and at S/N=1.
Note (8): Magnitude limit in the Ks band in 1arcsec2 and at S/N=1.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- Seq Identification number
7 A1 --- l_U35mag Limit flag on U35mag
8- 13 F6.3 mag U35mag ?=99.000 U35 magnitude, in AB photometric system
15 A1 --- l_U38mag Limit flag on U38mag
16- 21 F6.3 mag U38mag ?=99.000 U38 magnitude, in AB photometric system
23 A1 --- l_UVIMmag Limit flag on UVIMmag
24- 29 F6.3 mag UVIMmag ?=99.000 U-VIMOS magnitude, in AB
photometric system
31 A1 --- l_Bmag Limit flag on Bmag
32- 37 F6.3 mag Bmag ?=99.000 B magnitude, in AB photometric system
39 A1 --- l_Vmag Limit flag on Vmag
40- 45 F6.3 mag Vmag ?=99.000 V magnitude, in AB photometric system
47 A1 --- l_imag Limit flag on imag
48- 53 F6.3 mag imag ?=99.000 i magnitude, in AB photometric system
55 A1 --- l_zmag Limit flag on zmag
56- 61 F6.3 mag zmag ?=99.000 z magnitude, in AB photometric system
63- 68 F6.3 mag e_U35mag ?=99.000 U35 magnitude error
70- 75 F6.3 mag e_U38mag ?=99.000 U38 magnitude error
77- 82 F6.3 mag e_UVIMmag ?=99.000 U-VIMOS magnitude error
84- 89 F6.3 mag e_Bmag ?=99.000 B magnitude error
91- 96 F6.3 mag e_Vmag ?=99.000 V magnitude error
98-103 F6.3 mag e_imag ?=99.000 i magnitude error
105-110 F6.3 mag e_zmag ?=99.000 z magnitude error
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- Seq Identification number
7 A1 --- l_Jmag Limit flag on Jmag
8- 13 F6.3 mag Jmag ?=99.000 J magnitude, in AB photometric system
15 A1 --- l_Hmag Limit flag on Hmag
16- 21 F6.3 mag Hmag ?=99.000 H magnitude, in AB photometric system
23 A1 --- l_Ksmag Limit flag on Ksmag
24- 29 F6.3 mag Ksmag ?=99.000 Ks magnitude, in AB photometric system
31 A1 --- l_IR36mag Limit flag on IR36mag
32- 37 F6.3 mag IR36mag ?=99.000 IRAC 3.6µm magnitude,
in AB photometric system
39 A1 --- l_IR45mag Limit flag on IR45mag
40- 45 F6.3 mag IR45mag ?=99.000 IRAC 4.5µm magnitude,
in AB photometric system
47 A1 --- l_IR58mag Limit flag on IR58mag
48- 53 F6.3 mag IR58mag ?=99.000 IRAC 5.8µm magnitude,
in AB photometric system
55 A1 --- l_IR80mag Limit flag on IR80mag
56- 61 F6.3 mag IR80mag ?=99.000 IRAC 8.0µm magnitude,
in AB photometric system
63- 68 F6.3 mag e_Jmag ?=99.000 J magnitude error
70- 75 F6.3 mag e_Hmag ?=99.000 H magnitude error
77- 82 F6.3 mag e_Ksmag ?=99.000 Ks magnitude error
84- 89 F6.3 mag e_IR36mag ?=99.000 IRAC 3.6 micron magnitude error
91- 96 F6.3 mag e_IR45mag ?=99.000 IRAC 4.5 micron magnitude error
98-103 F6.3 mag e_IR58mag ?=99.000 IRAC 5.8 micron magnitude error
105-110 F6.3 mag e_IR80mag ?=99.000 IRAC 8.0 micron magnitude error
--------------------------------------------------------------------------------
History:
* 02-Feb-2006: Original version
* 04-Apr-2006: table5 corrected (from author )
Acknowledgements: Andrea Grazian, grazian(at)mporzio.astro.it
(End) Andrea Grazian [INAF, Roma], Patricia Vannier [CDS] 02-Feb-2006