J/A+A/403/493 H-band observation of Chandra Deep Field South (Moy+, 2003)
H-band observations of the Chandra Deep Field South.
Moy E., Barmby P., Rigopoulou D., Huang J.-S., Willner S.P., Fazio G.G.
<Astron. Astrophys. 403, 493 (2003)>
=2003A&A...403..493M 2003A&A...403..493M
ADC_Keywords: Photometry, infrared ; Infrared sources
Keywords: catalogs - surveys - infrared: general - galaxies: general -
stars: general - cosmology: observations
Abstract:
We report preliminary results of our H-band survey of the Chandra Deep
Field South (CDFS). The observations were made using SofI on the NTT,
and cover 0.027 square degrees with a 50% completeness limit of
H=20.5, and 0.17 square degrees with a 50% completeness limit of
H=19.8. We used SExtractor to extract sources from our fields. In
total we have detected 4819 objects. Star-galaxy separation was
performed using the SExtractor parameter "stellarity index". All
objects with an index of 0.5 or lower were classified as galaxies.
According to this criterion, 80% of our detections are galaxies. We
then compare our results with previous observations of the CDFS. Our
astrometric solutions are in good agreement with the Las Campanas
Infrared Survey (LCIRS), the COMBO-17 and the ESO-EIS surveys. The
photometry of our catalog compares satisfactorily with the results of
the LCIRS, as well as with the GOODS data. Galaxy number counts are
presented and compared with the LCIRS results. The present data are
intended to complement the recent and future multi-wavelength
observations of the CDFS and will be used, in conjunction with
additional multiband photometry, to find counterparts of the upcoming
mid-infrared surveys with SIRTF.
Description:
Photometric parameters for 4819 stars and galaxies in the Chandra Deep
Field South are presented. For each objects equatorial coordinates,
total, isophotal, aperture (3 arcsec.) H-band magnitudes and errors,
and stellarity index are given.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 90 4819 Photometric parameters for 4819 stars and galaxies
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See also:
VII/228 : Las Campanas Infrared Survey (Chen+, 2001-2002)
J/A+A/379/740 : ESO Imaging Survey (EIS) (Arnouts+, 2001)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- --- [CDFSH]
8- 11 I4 --- CDFSH [1/4819] Object identification number
14- 15 I2 --- Field Field number
18- 19 I2 h RAh Right ascension (J2000)
20 A1 --- --- [:]
21- 22 I2 min RAm Right ascension (J2000)
23 A1 --- --- [:]
24- 28 F5.2 s RAs Right ascension (J2000)
31 A1 --- DE- Declination sign
32- 33 I2 deg DEd Declination (J2000)
34 A1 --- --- [:]
35- 36 I2 arcmin DEm Declination (J2000)
37 A1 --- --- [:]
38- 42 F5.2 arcsec DEs Declination (J2000)
45- 49 F5.2 mag HmagT Total H magnitude, as estimated by SExtractor
52- 56 F5.3 mag e_HmagT Error on total H magnitude
59- 63 F5.2 mag HmagI Isophotal H magnitude, as estimated
by SExtractor
66- 70 F5.3 mag e_HmagI Error on isophotal H magnitude
73- 77 F5.2 mag HmagA Apertude H magnitude
(10 pixels, or 2.9" diameter)
80- 84 F5.3 mag e_HmagA Error on aperture H magnitude
87- 90 F4.2 --- Class SExtractor Stellarity index (1)
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Note (1): A value close to 1 indicates a star; a value close to zero
indicates a galaxy.
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Acknowledgements: Emmanuel Moy
(End) Patricia Bauer [CDS] 30-May-2003