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J/ApJS/169/401 ChaMP X-ray point source catalog (Kim+, 2007)
Chandra Multiwavelength Project X-ray point source catalog. Kim M., Kim D.-W., Wilkes B.J., Green P.J., Kim E., Anderson C.S., Barkhouse W.A., Evans N.R., Ivezic Z., Karovska M., Kashyap V.L., Lee M.G., Maksym P., Mossman A.E., Silverman J.D., Tananbaum H.D. <Astrophys. J. Suppl. Ser., 169, 401-429 (2007)> =2007ApJS..169..401K
ADC_Keywords: Surveys ; X-ray sources Keywords: catalogs - surveys - X-rays: general Abstract: We present the Chandra Multiwavelength Project (ChaMP) X-ray point source catalog with ∼6800 X-ray sources detected in 149 Chandra observations covering ∼10deg2. The full ChaMP catalog sample is 7 times larger than the initial published ChaMP catalog. The exposure time of the fields in our sample ranges from 0.9 to 124ks, corresponding to a deepest X-ray flux limit of f0.5-8.0=9x10-16ergs/cm2/s. The ChaMP X-ray data have been uniformly reduced and analyzed with ChaMP-specific pipelines and then carefully validated by visual inspection. The ChaMP catalog includes X-ray photometric data in eight different energy bands as well as X-ray spectral hardness ratios and colors. To best utilize the ChaMP catalog, we also present the source reliability, detection probability, and positional uncertainty. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table5.dat 102 6512 The main ChaMP X-ray point sources table6.dat 102 853 The supplementary ChaMP X-ray point sources table7.dat 87 926 The multiply-observed ChaMP X-ray source candidates table8.dat 150 6512 The main ChaMP X-ray point source photometry table9.dat 150 853 The supplementary ChaMP X-ray point source photometry table10.dat 76 6512 The main ChaMP X-ray point source hardness ratio and colors table11.dat 76 853 The supplementary ChaMP X-ray point source hardness ratio and colors table1.dat 97 151 List of ChaMP fields table3.dat 129 647 Energy conversion factor (ECF) table4.dat 73 22 Source flags
See also: B/chandra : The Chandra Archive Log (CXC, 1999-) VIII/28 : Bell Laboratories H I Survey (Stark+ 1992) J/ApJS/150/19 : ChaMP. I. First X-ray source catalog (Kim+, 2004) Byte-by-byte Description of file: table5.dat table6.dat
Bytes Format Units Label Explanations
1- 5 A5 --- --- [CXOMP] 7- 22 A16 --- CXOMP ChaMP source position name in J2000 (CXOMP JHHMMSS.s+DDMMSS in Simbad) 24- 27 I4 --- ObsID Observation identification number 29 I1 --- CCD The CCD identification number 31- 33 I3 --- Src Source number assigned by wavdetect (G2) 35- 44 F10.6 deg RAdeg Right Ascension in decimal degrees (J2000) 46- 55 F10.6 deg DEdeg Declination in decimal degrees (J2000) 57- 61 F5.2 arcsec ePos Positional uncertainty (G3) 62 A1 --- u_ePos [:] Uncertainty flag on ePos 64- 68 F5.2 arcmin OAA Off axis angle (G4) 70- 74 F5.2 arcsec Rad Source radius (1) 76- 81 F6.2 ks Exp Effective exposure time (2) 83-102 A20 --- Flag Source extraction flag, detailed in table4.dat
Note (1): Source extraction radius (the 95% encircled energy radius at 1.5keV. See section 3.2). Note (2): Mean effective exposure time after vignetting correction (see section 3.2.4).
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
1- 5 A5 --- --- [CXOMP] 7- 22 A16 --- CXOMP ChaMP X-ray source identification number (CXOMP JHHMMSS.s+DDMMSS in Simbad) 24- 26 I3 --- Mult Identification number for multiple observations (G1) 28- 31 I4 --- ObsID Observation identification number 33 I1 --- CCD The CCD identification number 35- 36 I2 --- Src Source number assigned by wavdetect (G2) 38- 47 A10 "YYYY/MM/DD" Obs.Date Month of the observation date 49- 56 F8.2 ct BNet Net counts in the broad 0.3-8keV band 58- 63 F6.2 ct e_BNet Error in CNet 65- 70 F6.2 ct/s BRate Count rate in the broad 0.3-8keV band 72- 75 F4.2 ct/s e_BRate Error in CRate 77- 81 F5.2 arcmin OAA Off axis angle (G4) 83- 87 F5.2 arcsec ePos Positional uncertainty (G3)
Byte-by-byte Description of file: table8.dat table9.dat
Bytes Format Units Label Explanations
1- 5 A5 --- --- [CXOMP] 7- 22 A16 --- CXOMP ChaMP X-ray source identification number (CXOMP JHHMMSS.s+DDMMSS in Simbad) 24- 31 F8.2 ct BNet ?=-99.99 Net counts in the 0.3-8keV band (1) 33- 38 F6.2 ct e_BNet ?=-99.99 Error in CNet (1) 40- 47 F8.2 ct S1Net ?=-99.99 Net counts in the 0.3-0.9keV band (1) 49- 54 F6.2 ct e_S1Net ?=-99.99 Error in S1Net (1) 56- 63 F8.2 ct S2Net ?=-99.99 Net counts in the 0.9-2.5keV band (1) 65- 70 F6.2 ct e_S2Net ?=-99.99 Error in S2Net (1) 72- 79 F8.2 ct SNet ?=-99.99 Net counts in the 0.3-2.5keV band (1) 81- 86 F6.2 ct e_SNet ?=-99.99 Error in SNet (1) 88- 95 F8.2 ct HNet ?=-99.99 Net counts in the 2.5-8keV band (1) 97-102 F6.2 ct e_HNet ?=-99.99 Error in HNet (1) 104-111 F8.2 ct BcNet ?=-99.99 Net counts in the 0.5-8keV band (1) 113-118 F6.2 ct e_BcNet ?=-99.99 Error in BcNet (1) 120-127 F8.2 ct ScNet ?=-99.99 Net counts in the 0.5-2keV band (1) 129-134 F6.2 ct e_ScNet ?=-99.99 Error in ScNet (1) 136-143 F8.2 ct HcNet ?=-99.99 Net counts in the 2-8keV band (1) 145-150 F6.2 ct e_HcNet ?=-99.99 Error in HcNet (1)
Note (1): -99.99 indicates net counts or net counts errors not defined.
Byte-by-byte Description of file: table10.dat table11.dat
Bytes Format Units Label Explanations
1- 5 A5 --- --- [CXOMP] 7- 22 A16 --- CXOMP ChaMP X-ray source identification number (CXOMP JHHMMSS.s+DDMMSS in Simbad) 24- 28 F5.2 --- HRl68 The 68% lower limit of hardness ratio 30- 34 F5.2 --- HR Hardness ratio (1) 36- 40 F5.2 --- HRu68 The 68% upper limit of hardness ratio 42- 46 F5.2 --- C21l68 The 68% lower limit of C21 48- 52 F5.2 --- C21 X-ray color C21 (2) 54- 58 F5.2 --- C21u68 The 68% upper limit of C21 60- 64 F5.2 --- C32l68 The 68% lower limit of C32 66- 70 F5.2 --- C32 X-ray color C32 (3) 72- 76 F5.2 --- C32u68 The 68% upper limit of C32
Note (1): HR=((Hc-Sc)/(Hc+Sc)) where Sc: net counts in the 0.3-2.5keV band Hc: net counts in the 2.5-8keV band Note (2): C21=log(S1/S2) where S1: net counts in the 0.3-0.9keV band S2: net counts in the 0.9-2.5keV band Note (3): C32=log(S2/H) where S2: net counts in the 0.9-2.5keV band H: net counts in the 2.5-8keV band
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- ObsID Observation identification number 6- 11 I6 --- SeqNum Chandra sequence number 13- 31 A19 --- Target Target name 33- 34 I2 h RAh Hour of Right Ascension (J2000.0) 36- 37 I2 min RAm Minute of Right Ascension (J2000.0) 39- 42 F4.1 s RAs Second of Right Ascension (J2000.0) 44 A1 --- DE- Sign of the Declination (J2000.0) 45- 46 I2 deg DEd Degree of Declination (J2000.0) 48- 49 I2 arcmin DEm Arcminute of Declination (J2000.0) 51- 54 F4.1 arcsec DEs [0 60] Arcsecond of Declination (J2000.0) 56- 60 F5.2 10+20cm-2 NH Column density (10^20^cm^-2^) (1) 62- 71 A10 "YYYY/MM/DD" Obs.Date Date of Observation 73- 78 F6.2 ks TExp Exposure time (2) 80- 85 A6 --- Instr Aim Point Detector type 87- 92 I6 --- Chips CCD Used (3) 94- 95 I2 --- Mult ? Identification number for multiple observations (G1) 97 A1 --- PapI [YN] Paper I used (4)
Note (1): Galactic extinction in units of 1020cm-2 from Stark et al. (1992, Cat. VIII/28). Note (2): Net exposure time estimated after removing background flares within the aim pointed CCD chip. Note (3): Used CCD chips (CCD ID 0-3 for ACIS-I and 4-9 for ACIS-S). Note (4): The 62 ChaMP fields included in Paper I (Kim et al., 2004 Cat. J/ApJS/150/19) are marked with "Y".
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 4 I4 --- ObsID Observation identification number 6 I1 --- CCD The CCD identification number 8- 13 F6.2 mJ/m2/ct Bg12 ECF in 0.3-8keV band assuming Γph=1.2 (1) 15- 20 F6.2 mJ/m2/ct Sg12 ECF in 0.3-2.5keV band assuming Γph=1.2 (1) 22- 27 F6.2 mJ/m2/ct Hg12 ECF in 2.5-8keV band assuming Γph=1.2 (1) 29- 34 F6.2 mJ/m2/ct Bcg12 ECF in 0.5-8keV band assuming Γph=1.2 (1) 36- 40 F5.2 mJ/m2/ct Scg12 ECF in 0.5-2keV band assuming Γph=1.2 (1) 42- 47 F6.2 mJ/m2/ct Hcg12 ECF in 2-8keV band assuming Γph=1.2 (1) 49- 54 F6.2 mJ/m2/ct Bg14 ECF in 0.3-8keV band assuming Γph=1.4 (1) 56- 61 F6.2 mJ/m2/ct Sg14 ECF in 0.3-2.5keV band assuming Γph=1.4 (1) 63- 68 F6.2 mJ/m2/ct Hg14 ECF in 2.5-8keV band assuming Γph=1.4 (1) 70- 75 F6.2 mJ/m2/ct Bcg14 ECF in 0.5-8keV band assuming Γph=1.4 (1) 77- 81 F5.2 mJ/m2/ct Scg14 ECF in 0.5-2keV band assuming Γph=1.4 (1) 83- 88 F6.2 mJ/m2/ct Hcg14 ECF in 2-8keV band assuming Γph=1.4 (1) 90- 95 F6.2 mJ/m2/ct Bg17 ECF in 0.3-8keV band assuming Γph=1.7 (1) 97-102 F6.2 mJ/m2/ct Sg17 ECF in 0.3-2.5keV band assuming Γph=1.7 (1) 104-109 F6.2 mJ/m2/ct Hg17 ECF in 2.5-8keV band assuming Γph=1.7 (1) 111-116 F6.2 mJ/m2/ct Bcg17 ECF in 0.5-8keV band assuming Γph=1.7 (1) 118-122 F5.2 mJ/m2/ct Scg17 ECF in 0.5-2keV band assuming Γph=1.7 (1) 124-129 F6.2 mJ/m2/ct Hcg17 ECF in 2-8keV band assuming Γph=1.7 (1)
Note (1): Where "ECF" is the Energy Conversion Factor and the units are in erg/cm2/ct.
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 2 A2 --- Type [12356n] Flag type (1) 4- 5 I2 --- Flag Flag number 7- 73 A67 --- Comm Meaning of the flag
Note (1): Flag type, defined as follows: 1n = False X-ray sources 2n = It is not certain whether it is a valid X-ray source 3n = Source properties may be subject to a large uncertainty 4n = Other cases 5n = Flagged by the automatic pipeline xapphot
Global Notes: Note (G1): Multiple observation ID (ObsID) indicates overlapping fields, labeled with the same ID (Mult). Note (G2): Source number assigned by wavdetect as marked in the public X-ray image of the ChaMP Web site (http://hea-www.harvard.edu/CHAMP) Note (G3): Positional uncertainty estimated by the 95% confidence level of the empirical formula (see equation (12) in section 4.2). Note (G4): Off axis angle from the aimed point of the observation.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 05-Jan-2009
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