J/A+A/375/1 IR observations of Chandra Deep Field + HDF-South (Saracco+, 2001)
Deep near-IR observations of the Chandra Deep Field and of the HDF South.
Color and number counts.
Saracco P., Giallongo S., Cristiani S., D'Odorico S., Fontana A., Iovino A.,
Poli F., Vanzella E.
<Astron. Astrophys. 375, 1 (2001)>
=2001A&A...375....1S 2001A&A...375....1S
ADC_Keywords: Infrared sources ; Photometry, infrared
Keywords: cosmology: large scale structure of the Universe - galaxies: general
Description:
We present near-IR (J and Ks) number counts and colors of galaxies
detected in deep VLT-ISAAC images centered on the Chandra Deep Field
(03h 32min 16s, -27° 47' 25") and on the Hubble Deep Field-South.
(22h 32min 55s, -60° 33' 08").
The data have been obtained with the ISAAC infrared imager/spectrometer
at the ESO VLT-UT1 telescope on several nights from September to
December 1999 (seeing conditions around 0.7arcsec).
The limiting surface brightness (1 sigma) obtained is
24.5mag/arcsec2 in J and 22mag/arcsec2 in Ks.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
cdfkcat.dat 148 332 Chandra Deep Field (CDF) near-IR catalog
hdfkcat.dat 136 414 Hubble Deep Field South (HDF) near-IR catalog
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See also:
http://ares.merate.mi.astro.it/~saracco/science.html : Deep Field home page
J/AJ/120/2747 : HDF-South WFPC2 observations (Casertano+, 2000)
J/AJ/119/486 : HDF-S: STIS imaging (Gardner+, 2000)
J/A+AS/145/111 : HDF-South catalogue of galaxies (Volonteri+, 2000)
J/A+A/384/81 : ESO Imaging Survey. CDF-S point sources (Hatziminaoglou+ 2002)
Byte-by-byte Description of file: cdfkcat.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq ID number in CDF field
5- 11 F7.3 pix Xpos Barycentre position along x
13- 19 F7.3 pix Ypos Barycentre position along y
22- 27 F6.3 mag Kstot Ks total magnitude
29- 34 F6.3 mag Ksiso Ks isophotal magnitude
36- 41 F6.3 mag e_Ksiso rms error for isophotal magnitude
43- 48 F6.3 mag Kscor Ks corrected isophotal magnitude
50- 55 F6.3 mag e_Kscor rms error for corrected isophotal magnitude
57- 62 F6.3 mag Ksaper Ks fixed circular aperture magnitude
(2 arcsec diameter)
64- 69 F6.3 mag e_Ksaper rms error for fixed circular magnitude
71- 76 F6.3 mag Ksmag SExtractor best choice for Ks photometry
(KMAG_ISOCOR or KMAG_AUTO)
78- 83 F6.3 mag e_Ksmag rms error for BEST Ks magnitude
85 I1 --- Jdetect [0/1] J-band detection flag:
0 detected; 1 undetected (or J-band
flux lower than 2sigma upper limit)
87- 92 F6.3 mag J-Ks J-Ks color
94- 99 F6.3 mag J-Ksiso J-Ks color (isophotal magnitudes)
101-106 F6.3 mag J-Ksaper J-Ks color (aperture magnitudes)
109-112 I4 pix+2 IsoArea Isophotal area above 1σ/pix
114-123 F10.7 deg RAdeg Right Ascension of barycentre (J2000)
125-135 F11.7 deg DEdeg Declination of barycentre (J2000)
137-141 F5.2 pix FWHM FWHM assuming a gaussian core
143 I1 --- Ext [0-3] Extraction flags (G1)
145-148 F4.2 --- Star/Gal Star-galaxy classification (G2)
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Byte-by-byte Description of file: hdfkcat.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq ID number in HDF-S field
5- 12 F8.3 pix xpos Barycentre position along x
14- 21 F8.3 pix ypos Barycentre position along y
23- 33 F11.7 deg RAdeg Right ascension of barycentre (J2000)
35- 45 F11.7 deg DEdeg Declination of barycentre (J2000)
47- 52 F6.3 mag Kstot Ks total magnitude
54- 59 F6.3 mag Ksiso Ks isophotal magnitude
61- 66 F6.3 mag e_Ksiso rms error for isophotal magnitude
68- 73 F6.3 mag Kscor Ks corrected isophotal magnitude
75- 80 F6.3 mag e_Kscor rms error for corrected isophotal magnitude
82- 87 F6.3 mag Ksmag SExtractor best choice for Ks photometry
(KMAG_ISOCOR or KMAG_AUTO)
89- 94 F6.3 mag e_Ksmag rms error for BEST Ks magnitude
96 I1 --- Jdetect [0/1] J-band detection flag:
0 detected; 1 undetected (or J-band
flux lower than 2sigma upper limit)
98-103 F6.3 mag J-Ks J-Ks color
105-110 F6.3 mag J-Ksiso J-Ks color (isophotal magnitudes)
112-117 F6.3 mag H-Ks H-Ks color (isophotal magnitudes)
120-123 I4 pix+2 IsoArea Isophotal area above 1sigma/pix
125-129 F5.2 pix FWHM FWHM assuming a gaussian core
131 I1 --- Ext [0-3] Extraction flags (G1)
133-136 F4.2 --- Star/Gal Star-galaxy classification (G2)
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Globla notes:
Note (G1): The Sextractor photometry flag indicates the presence of
bright neighbours (1), a deblended object (2), both (3) or neither (0).
Note (G2): Star-galaxy classification:
When Star/Gal≲0.3, objects are identified as galaxies, whereas
Star/Gal≳0.7 correspond to stars.
History: Copied at
http://ares.merate.mi.astro.it/~saracco/Deep_fields/CDF-S/CDF_Kcat.ascii
and magnitudes values, originally presented with up to 8 decimals,
have been rounded to 3 decimals.
(End) Patricia Bauer [CDS] 29-Aug-2001