- HEASARC Director: Dr. Alan P. Smale
- HEASARC Associate Director: Dr. Roger Brissenden
- NASA Official: Phil Newman
- Web Curator: Meredith Gibb
- Last Modified: 21-Dec-2012
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CCOSMOSOID - Chandra COSMOS (C-COSMOS) Survey Optical/IR Counterparts Catalog |
HEASARC Archive |
The Chandra COSMOS survey.
III. Optical and infrared identification of X-ray point sources.
Civano F., Elvis M., Brusa M., Comastri A., Salvato M., Zamorani G.,
Aldcroft T., Bongiorno A., Capak P., Cappelluti N., Cisternas M., Fiore F.,
Fruscione A., Hao H., Kartaltepe J., Koekemoer A., Gilli R., Impey C.D.,
Lanzuisi G., Lusso E., Mainieri V., Miyaji T., Lilly S., Masters D.,
Puccetti S., Schawinski K., Scoville N.Z., Silverman J., Trump J., Urry M.,
Vignali C., Wright N.J.
<Astrophys. J. Suppl. Ser., 201, 30 (2012)>
=2012ApJS..201...30C
The Chandra Survey of the COSMOS Field.
II. Source Detection and Photometry
Puccetti S., Vignali C., Cappelluti N., Fiore F., Zamorani G., Aldcroft
T.L., Elvis M., Gilli R., Miyaji T., Brunner H., and 8 coauthors
<Astrophys. J. Suppl. Ser., 185, 586 (2009)>
=2009ApJS..185..586P
The Chandra COSMOS survey.
I. Overview and point source catalog.
Elvis M., Civano F., Vignali C., Puccetti S., Fiore F., Cappelluti N.,
Aldcroft T.L., Fruscione A., Zamorani G., Comastri A., Brusa M., Gilli R.,
Miyaji T., Damiani F., Koekemoer A.M., Finoguenov A., Brunner H.,
Urry C.M., Silverman J., Mainieri V., Hasinger G., Griffiths R.,
Carollo M., Hao H., Guzzo L., Blain A., Calzetti D., Carilli C., Capak P.,
Ettori S., Fabbiano G., Impey C., Lilly S., Mobasher B., Rich M.,
Salvato M., Sanders D.B., Schinnerer E., Scoville N., Shopbell P.,
Taylor J.E., Taniguchi Y., Volonteri M.
<Astrophys. J. Suppl. Ser., 184, 158-171 (2009)>
=2009ApJS..184..158E
Name
The Chandra COSMOS (C-COSMOS) source name, viz., 'CXOC JHHMMSS.s+DDMMSS',
following the standard IAU naming convention with the prefix standing for
Chandra X-Ray Observatory COSMOS survey, similar to the style used in Elvis
et al. 2009, ApJS, 184, 158, Paper I, the HEASARC CCOSMOSCAT table). The
names themselves often differ slightly from those used in the latter catalog,
partially because the present authors appear to have rounded the coordinates
up or down rather than truncating them (as the standard recommends) to form
the names.
Source_Number
The C-COSMOS source number. Sources are listed in order of
detection as in Paper I: first those detected in the full band with detml >=
10.8, followed by those detected in the soft band only and by those detected
in the hard band only.
RA
The Right Ascension of the C-COSMOS source in the selected equinox.
This was given in J2000.0 decimal degrees to a precision of 10-5 degrees in
the original table.of the C-COSMOS source in the selected equinox.
Dec
The Declination of the C-COSMOS source in the selected equinox.
This was given in J2000.0 decimal degrees to a precision of 10-6 degrees in
the original table.of the C-COSMOS source in the selected equinox.
LII
The Galactic Longitude of the C-COSMOS source.
BII
The Galactic Latitude of the C-COSMOS source.
SB_Flux
The X-ray flux in the soft band (0.5-2.0 keV), in erg s-1 cm-2.
Negative fluxes represent upper limits as computed following the prescriptions
of Puccetti et al. (2009, ApJS, 185, 586, Paper II).
HB_Flux
The X-ray flux in the hard band (2-10 keV), in erg s-1 cm-2.
Negative fluxes represent upper limits as computed following the prescriptions
of Puccetti et al. (2009, ApJS, 185, 586, Paper II).
Flux
The X-ray flux in the full band (0.5-10 keV), in erg s-1 cm-2.
Negative fluxes represent upper limits as computed following the prescriptions
of Puccetti et al. (2009, ApJS, 185, 586, Paper II).
Ctrpart_RA
The Right Ascension of the optical/IR counterpart to
the C-COSMOS source, as determined in the reference paper (III), in the
selected equinox. This was given in J2000.0 decimal degrees to a precision
of 10-5 degrees in the original table.
Ctrpart_Dec
The Declination of the optical/IR counterpart to
the C-COSMOS source, as determined in the reference paper (III), in the
selected equinox. This was given in J2000.0 decimal degrees to a precision
of 10-6 degrees in the original table.
Capak_Source_Number
The identifier of the optical counterpart to
the C-COSMOS source, from the optical catalog of Capak et al. (2007, ApJS,
172, 99). To form the corresponding name, it is recommended that the
prefix 'COSMOS' and this source number is used.
Ilbert_Source_Number
The identifier of the optical counterpart to
the C-COSMOS source, from the revised version of the optical catalog (Ilbert
et al. 2009, ApJ, 690, 1236). To form the corresponding name, the
HEASARC recommends that the prefix 'COSMOS-r' and this source number is used.
CI_Ctrpart_RA
The Right Ascension of the optical counterpart to
the C-COSMOS source, as given in Capak et al. (2007, ApJS,
172, 99) and Ilbert et al. (2009, ApJ, 690, 1236), in the
selected equinox. This was given in J2000.0 decimal degrees to a precision
of 10-5 degrees in the original table.
CI_Ctrpart_Dec
The Declination of the optical counterpart to
the C-COSMOS source, as given in Capak et al. (2007, ApJS,
172, 99) and Ilbert et al. (2009, ApJ, 690, 1236), in the
selected equinox. This was given in J2000.0 decimal degrees to a precision
of 10-6 degrees in the original table.
Imag
The i-band AB magnitude (in a 3" aperture) of the optical
counterpart to the C-COSMOS source, from Capak et al. (2007, ApJS,
172, 99)
Imag_Error
The error in the i-band AB magnitude (in a 3" aperture) of the
optical counterpart to the C-COSMOS source, from Capak et al. (2007, ApJS,
172, 99)
Kmag_Ctrpart_RA
The Right Ascension of the K-band counterpart to
the C-COSMOS source, as given in the catalog of McCracken et al. (2010, ApJ,
708, 202), in the
selected equinox. This was given in J2000.0 decimal degrees to a precision
of 10-6 degrees in the original table.
Kmag_Ctrpart_Dec
The Declination of the K-band counterpart to
the C-COSMOS source, as given in the catalog of McCracken et al. (2010, ApJ,
708, 202), in the
selected equinox. This was given in J2000.0 decimal degrees to a precision
of 10-6 degrees in the original table.
Kmag
The K-band AB magnitude (in a 3" aperture) of the IR
counterpart to the C-COSMOS source, from McCracken et al. (2010, ApJ, 708,
202).
Kmag_Error
The error in the K-band AB magnitude (in a 3" aperture) of the
IR counterpart to the C-COSMOS source, from McCracken et al. (2010, ApJ, 708,
202).
IRAC_Ctrpart_RA
The Right Ascension of the 3.6-um counterpart to
the C-COSMOS source, as given in the IRAC catalog (Sanders et al. 2007, ApJS,
172, 86), in the
selected equinox. This was given in J2000.0 decimal degrees to a precision
of 10-6 degrees in the original table.
IRAC_Ctrpart_Dec
The Declination of the 3.6-um counterpart to
the C-COSMOS source, as given in the IRAC catalog (Sanders et al. 2007, ApJS,
172, 86), in the
selected equinox. This was given in J2000.0 decimal degrees to a precision
of 10-6 degrees in the original table.
Flux_3p6_um
The Spitzer/IRAC 3.6-micron flux (in a 1.9" aperture) of the
counterpart to the C-COSMOS source, as given in the IRAC catalog (Sanders et
al. 2007, ApJS, 172, 86), in microJansky (uJy).
To convert to total flux, the standard factor suggested in the IRAC User
Guide has to be applied, i.e., division of this value by 0.765.
Flux_3p6_um_Error
The error in the Spitzer/IRAC 3.6-micron flux (in a 1.9"
aperture) of the counterpart to the C-COSMOS source, as given in the IRAC
catalog (Sanders et al. 2007, ApJS, 172, 86), in microJansky (uJy).
Final_Id_Flag
The final counterpart identification flag, where 1 means
secure, 10 means ambiguous, 100 means sub-threshold, and blank means
that no counterpart was identified.
Star_Flag
The star flag, used to isolate stars, where 1 means a
spectroscopic confirmed star, and 10 means a 'photometric' star.
Off_Nuclear_Flag
This Boolean off-nuclear flag parameter is set to 1
to isolate the seven off-nuclear sources from Mainieri et al. (2010, A&A, 514,
A85).
Redshift
The spectroscopic redshift of the counterpart to the C-COSMOS
source, taken from the optical, K-band, and/or
3.6-micron catalogs listed in Section 6 of the reference paper.
Broad_Type
A flag describing the spectroscopic classification of the
source, where 1 means a broad-lined AGN (BLAGN), 2 means a non-BLAGN, and
0 means a star. (See Section 6.1 of the reference paper for more details).
Redshift_Flag
A flag indicating the spectroscopic redshift quality of the
source, as follows:
blank = no spectroscopic redshift is available (860 sources),
3 = two or more emission and/or absorption lines (97 sources),
4 = good signal-to-noise ratio and two or more emission and/or
absorption line (802 sources),
9 = significance of this value is not known to the HEASARC (2 sources).
Ref_Redshift
A reference code for the origin of the spectroscopic redshift,
as follows:
1 = SDSS (Sloan Digital Sky Survey)
2 = Hectospec at MMT (Mount Hopkins; Arizona)
3 or 4 = IMACS at Magellan (Las Campanas)
5 = zCOSMOS bright,
6 = zCOSMOS deep,
7 = Keck Observatory (Hawaii),
8 = other (FAST telescope, FMOS, WFC3).
Phot_Redshift
The photometric redshift of the counterpart to the C-COSMOS
source, taken from Salvato et al. (2011, ApJ, 742, 61).
Phot_SED_Type
The photometric classification of the counterpart to the
C-COSMOS source from SED Fitting, where 1 means unobscured, 2 means obscured
and 3 means a galaxy.
XMMC_Name
The name of the corresponding X-ray source in the XMM-COSMOS
Catalog (Cappelluti et al. 2009, A&A, 497, 635).