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J/A+A/392/741       Stellar Catalogue in the Chandra DFS  (Groenewegen+ 2002)

ESO Imaging Survey. The Stellar Catalogue in the Chandra Deep Field South Groenewegen M.A.T., Girardi L., Hatziminaoglou E., Benoist C., Olsen L.F., da Costa L., Arnouts S., Madejsky R., Mignani R.P., Rite C., Sikkema G., Slijkhuis R. <Astron. Astrophys. 392, 757 (2002)> =2002A&A...392..741G
ADC_Keywords: Surveys ; QSOs ; Galaxy catalogs ; Stars, white dwarf ; Photometry, UBVRI ; Photometry, infrared Keywords: surveys - catalogs - methods: data analysis - quasars: general - white dwarfs - stars: low-mass, brown dwarfs Abstract: Stellar catalogues in five passbands (UBVRI) over an area of approximately 0.3°2, comprising about 1200 objects, and in seven passbands (UBVRIJK) over approximately 0.1°2, comprising about 400 objects, in the direction of the Chandra Deep Field South are presented. The 90% completeness level of the number counts is reached at approximately U=23.8, B=24.0, V=23.5, R=23.0, I=21.0, J=20.5, K=19.0. These multi-band catalogues have been produced from publicly available, single passband catalogues. A scheme is presented to select point sources from these catalogues, by combining the SExtractor parameter CLASS_STAR from all available passbands. Probable QSOs and unresolved galaxies are identified by using the previously developed χ2-technique (Hatziminaoglou et al., 2002, Cat. J/A+A/384/81), that fits the overall spectral energy distributions to template spectra and determines the best fitting template. Approximately 15% of true galaxies are misclassified as stars by the χ2 method. The number of unresolved galaxies and QSOs identified by the χ2-technique, allows us to estimate that the remaining level of contamination by such objects is at the level of 2.4% of the number of stars. The fraction of missing stars being incorrectly removed as QSOs or unresolved galaxies is estimated to be similar. The resulting stellar catalogues and the objects identified as likely QSOs and unresolved galaxies with coordinates, observed magnitudes with errors and assigned spectral types by the χ2-technique are presented and are publicly available. Description: Five and seven passband colour catalogues in the direction of the Chandra Deep Field South are constructed, from previously published single passband catalogues. A method to perform Star-Galaxy separation is presented. Additionally, methods are presented to pick-up QSO and compact galaxies, which are also point sources. The tables present the final 5 and 7 passband catalogues for the objects considered as stars (tables 3 and 4), QSOs (tables 5 and 6) and compact galaxies (tables 7 and 8). All tables contain: the name of the object, Right Ascension and Declination, magnitudes and error for, respectively, 5 or 7 passbands. The last column(s) lists the assigned spectral type for the stellar catalogues, photometric redshift for the QSO catalogues, and galaxy type and photometric redshift for the compact galaxies catalogues. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 123 1198 5-passband stellar catalog table4.dat 147 409 7-passband stellar catalog table5.dat 123 136 5-passband QSO catalog table6.dat 147 61 7-passband QSO catalog table7.dat 123 37 5-passband compact galaxies catalog table8.dat 147 16 7-passband compact galaxies catalog
See also: B/chandra : The Chandra Archive Log (CXC, 2002) J/A+A/379/740 : ESO Imaging Survey (EIS) (Arnouts+, 2001) J/A+A/384/81 : ESO Imaging Survey. CDF-S point sources (Hatziminaoglou+, 2002) J/ApJS/139/369 : Chandra Deep Field South. 1 Ms catalog (Giacconi+, 2002) J/MNRAS/328/150 : KX redshift survey (Croom+, 2001) J/A+A/377/442 : Chandra Deep Field South: R-band photometry (Wolf+, 2001) J/A+A/375/1 : IR obs. of Chandra Deep Field + HDF-South (Saracco+, 2001) Byte-by-byte Description of file: table3.dat table5.dat table7.dat
Bytes Format Units Label Explanations
1- 3 A3 --- --- [EIS] 5- 23 A19 --- EIS EIS designation 25- 26 I2 h RAh Right ascension (J2000) 27 A1 --- --- [:] 28- 29 I2 min RAm Right ascension (J2000) 30 A1 --- --- [:] 31- 35 F5.2 s RAs Right ascension (J2000) 37 A1 --- DE- Declination sign (J2000) 38- 39 I2 deg DEd Declination (J2000) 40 A1 --- --- [:] 41- 42 I2 arcmin DEm Declination (J2000) 43 A1 --- --- [:] 44- 47 F4.1 arcsec DEs Declination (J2000) 49 A1 --- l_Umag Limit flag on Umag 50- 54 F5.2 mag Umag U magnitude in EIS filter (see J/A+A/379/740) 56- 59 F4.2 mag e_Umag ? rms uncertainty on Umag 61 A1 --- l_Bmag Limit flag on Bmag 62- 66 F5.2 mag Bmag B magnitude in EIS filter (see J/A+A/379/740) 68- 71 F4.2 mag e_Bmag ? rms uncertainty on Bmag 73 A1 --- l_Vmag Limit flag on Vmag 74- 78 F5.2 mag Vmag V magnitude in EIS filter (see J/A+A/379/740) 80- 83 F4.2 mag e_Vmag ? rms uncertainty on Vmag 85 A1 --- l_Rmag Limit flag on Rmag 86- 90 F5.2 mag Rmag R magnitude in EIS filter (see J/A+A/379/740) 92- 95 F4.2 mag e_Rmag ? rms uncertainty on Rmag 97 A1 --- l_Imag Limit flag on Imag 98-102 F5.2 mag Imag I magnitude in EIS filter (see J/A+A/379/740) 104-107 F4.2 mag e_Imag ? rms uncertainty on Imag 109-118 A10 --- SpType MK Spectral type 120-123 F4.2 --- zphot ? Photometric redshift
Byte-by-byte Description of file: table4.dat table6.dat table8.dat
Bytes Format Units Label Explanations
1- 3 A3 --- --- [EIS] 5- 23 A19 --- EIS EIS designation 25- 26 I2 h RAh Right ascension (J2000) 27 A1 --- --- [:] 28- 29 I2 min RAm Right ascension (J2000) 30 A1 --- --- [:] 31- 35 F5.2 s RAs Right ascension (J2000) 37 A1 --- DE- Declination sign (J2000) 38- 39 I2 deg DEd Declination (J2000) 40 A1 --- --- [:] 41- 42 I2 arcmin DEm Declination (J2000) 43 A1 --- --- [:] 44- 47 F4.1 arcsec DEs Declination (J2000) 49 A1 --- l_Umag Limit flag on Umag 50- 54 F5.2 mag Umag U magnitude 56- 59 F4.2 mag e_Umag ? rms uncertainty on Umag 61 A1 --- l_Bmag Limit flag on Bmag 62- 66 F5.2 mag Bmag B magnitude 68- 71 F4.2 mag e_Bmag ? rms uncertainty on Bmag 73 A1 --- l_Vmag Limit flag on Vmag 74- 78 F5.2 mag Vmag V magnitude 80- 83 F4.2 mag e_Vmag ? rms uncertainty on Vmag 85 A1 --- l_Rmag Limit flag on Rmag 86- 90 F5.2 mag Rmag R magnitude 92- 95 F4.2 mag e_Rmag ? rms uncertainty on Rmag 97 A1 --- l_Imag Limit flag on Imag 98-102 F5.2 mag Imag I magnitude 104-107 F4.2 mag e_Imag ? rms uncertainty on Imag 109 A1 --- l_Jmag Limit flag on Jmag 110-114 F5.2 mag Jmag J magnitude 116-119 F4.2 mag e_Jmag ? rms uncertainty on Jmag 121 A1 --- l_Kmag Limit flag on Kmag 122-126 F5.2 mag Kmag K magnitude 128-131 F4.2 mag e_Kmag ? rms uncertainty on Kmag 133-142 A10 ---- SpType MK Spectral type 144-147 F4.2 --- zphot ? Photometric redshift
Acknowledgements: M.A.T. Groenewegen
(End) Groenewegen [KU Leuven] 10-Jun-2002
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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