CDFN2MSOID - Chandra Deep Field North 2-Megasecond Optical & IR Catalog
The X-ray sample is presented in Alexander et al. (2003, AJ, 126, 539, hereafter ABB2003) and in CDS Catalog <J/AJ/126/539>, and is also available in the HEASARC Browse system as the CHANDFN2MS table. The optical imaging data consist of Johnson B, Johnson V, Cousins R, Cousins I, and Sloan z' observations obtained with the Subaru prime-focus camera Suprime-Cam on the Subaru 8.2m telescope during February-April of 2001 and 2002.
Optical and infrared properties of the 2Ms Chandra Deep Field North X-ray sources. Barger A.J., Cowie L.L., Capak P., Alexander D.M., Bauer F.E., Fernandez E., Brandt W.N., Garmire G.P., Hornschemeier A.E. <Astron. J. 126, 632 (2003)> =2003AJ....126..632B The Chandra Deep Field North Survey. XIII. 2 Ms point-source catalogs. Alexander D.M., Bauer F.E., Brandt W.N., Schneider D.P., Hornschemeier A.E., Vignali C., Barger A.J., Broos P.S., Cowie L.L., Garmire G.P., Townsley L.K., Bautz M.W., Chartas G., Sargent W.L.W. <Astron. J. 126, 539 (2003)> =2003AJ....126..539A
The X-ray source sequence number taken from ABB2003 in order of increasing right ascension.
The object designation using the prefix recommended by the Dictionary of Nomenclature of Celestial Objects and implemented in the CDS Simbad service. The authors describe an alternative form for these sources using the Chandra X-Ray Observatory (CXO) naming convention: the prefix "CXO HDFN J" together with the J2000 RA and declination, truncated to 0.1 seconds of time and 1 arcsecond, respectively. Thus, the object with sequence_number of 1 and the J2000 position of 12 35 15.04, +62 14 07.0 has the name of "[ABB2003] CDFN 1" here, and the alternate name of "CXO HDFN J123515.0+621407".
The Right Ascension of the X-Ray source in fixed J2000 coordinates taken from ABB2003.
The Declination of the X-Ray source in fixed J2000 coordinates taken from ABB2003.
The Right Ascension of the optical object at the position where the aperture magnitudes were measured, in the selected equinox. This was given in decimal degrees in the J2000 equinox in the original table, and with a precision of 1E-06 degrees.
The Declination of the optical object at the position where the aperture magnitudes were measured, in the selected equinox. This was given in decimal degrees in the J2000 equinox in the original table, and with a precision of 1E-05 degrees.
The Galactic Longitude of the optical source.
The Galactic Latitude of the optical source.
The soft-band (0.5-2 keV) X-Ray flux, in erg/s/cm2, taken from ABB2003.
The hard-band (2-8 keV) X-Ray flux, in erg/s/cm2, taken from ABB2003.
The isophotal Cousins R Magnitude of the object.
The corrected-aperture Wainscoat-Cowie HK' magnitude of the object.
The corrected-aperture Sloan z' magnitude of the object.
The corrected-aperture Cousins I magnitude of the object.
The corrected-aperture Cousins R magnitude of the object.
The corrected-aperture Johnson V magnitude of the object.
The corrected-aperture Johnson B magnitude of the object.
The corrected-aperture U-band magnitude of the object on the AB-magnitude system, defined by mAB = -2.5log(fnu) - 48.60, where fnu is the flux of the source in units of ergs/cm2/s/Hz.
The spectroscopic redshift of the object, if available.
A flag for the spectroscopic redshift, as follows:
o = Spectrum was obtained but no identification could be made; s = Star.
The photometric redshift of the object, if available.
A flag for the type of spectrum observed, as follows:
B = Spectrum has broad emission lines s = Less secure redshift identification based primarily on a single emission line and the continuum shape c = Redshift taken from Cohen et al., 2000, Cat. <J/ApJ/538/29> m = Complex or multiple structure or possible contamination of the photometry by a nearby brighter object