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J/ApJS/197/24     Chandra large-scale extragalactic jets. I.    (Massaro+, 2011)

Large-scale extragalactic jets in the Chandra era. I. Data reduction and analysis. Massaro F., Harris D.E., Cheung C.C. <Astrophys. J. Suppl. Ser., 197, 24 (2011)> =2011ApJS..197...24M
ADC_Keywords: Galaxies, radio ; X-ray sources ; QSOs ; BL Lac objects ; Redshifts ; Radio continuum Keywords: galaxies: active - galaxies: jets - radio continuum: galaxies - radiation mechanisms: non-thermal - relativistic processes - X-rays: galaxies Abstract: In this paper, we report the first stages of an investigation into the X-ray properties of extragalactic jets (XJET project). Our approach is to subject all sources for which X-ray emission has been detected by Chandra to uniform reduction procedures. Using Chandra archival data for 106 such sources, we measure X-ray fluxes in three bands and compare these to radio fluxes. We discuss the sample, the reduction methods, and present first results for the ratio of X-ray to radio flux for jet knots and hotspots. In particular, we apply statistical tests to various distributions of key observational parameters to evaluate differences between the different classes of sources. Description: The sample considered for our investigation consists of 106 radio sources with a published Chandra X-ray detection of a radio knot and/or hotspot, for a total of 236 components. All the components identified in our analysis have been previously discovered as reported in the referenced papers (see Tables 1, 2, and 3) with four exceptions, namely: n46.4 in 3C 109, n3.5, n5.6 in M 84, and w6.0 in 3C 280, that we detected because in this work we used Chandra observations with longer exposure than the previous ones. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 92 31 Basic parameters of the (00-08h) sources considered in the XJET sample (see Section 2) table2.dat 92 45 Basic parameters of the (08-16h) sources considered in the XJET sample (see Section 2) table3.dat 92 30 Basic parameters of the (16-24hr) sources considered in the XJET sample (see Section 2) table7.dat 116 236 Radio and X-ray fluxes measured for all components together with their X/Radio ratios refs.dat 44 62 References
See also: B/chandra : The Chandra Archive Log (CXC, 1999-) VIII/76 : Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla+ 2005) J/ApJ/706/1253 : MOJAVE VII. Blazar jet acceleration (Homan+, 2009) J/AJ/138/1874 : MOJAVE. VI. Kinematic analysis of blazar jets (Lister+, 2009) J/AJ/137/3718 : 15GHz monitoring of AGN jets with VLBA (Lister+, 2009) J/ApJ/686/859 : Radio sources at 0.327, 1.4, 4.5, 8.5GHz (Birzan+, 2008) J/AJ/133/2357 : Relativistic jets in the RRFID database (Piner+, 2007) J/ApJS/171/376 : MOJAVE. III. VLA 1.4GHz images (Cooper+, 2007) J/AJ/131/1262 : Circular polarization images at 15GHz of AGN jets (Homan+, 2006) J/AJ/130/1418 : AGN jet kinematics (Jorstad+, 2005) J/AJ/130/1389 : Linear polarization of AGN jets at 15GHz (Lister+, 2005) J/ApJ/609/539 : Kinematics of parsec-scale radio jets (Kellermann+, 2004) J/A+A/381/757 : List of extra-galactic radio jets (Liu+, 2002) J/A+A/298/375 : Jet-disk symbiosis II (Falcke+ 1995) http://hea-www.harvard.edu/XJET/ : XJET home page Byte-by-byte Description of file: table1.dat table2.dat table3.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name Galaxy name (G1) 14- 18 A5 --- Class Class of Galaxy (G2) 20- 21 I2 h RAh Hour of right ascension (J2000) 23- 24 I2 min RAm Minute of right ascension (J2000) 26- 31 F6.3 s RAs Second of right ascension (J2000) 33 A1 --- DE- Sign of declination (J2000) 34- 35 I2 deg DEd Degree of declination (J2000) 37- 38 I2 arcmin DEm Arcminute of declination (J2000) 40- 44 F5.2 arcsec DEs Arcsecond of declination (J2000) 46- 51 F6.4 --- z Redshift 53- 59 F7.1 Mpc Dist Luminosity distance (DL; Wright, 2006PASP..118.1711W) 61- 64 F4.2 kpc/arcsec Scale Scale 66- 71 F6.2 10+20cm-2 NH Galactic absorption (NH,Gal; (Kalberla et al. 2005, Cat. VIII/76)) 73- 77 I5 --- ObsId Chandra observation ID 79- 83 F5.2 --- CFS Correction factor for the Galactic absorption in the soft band (0.5-1keV) 85- 88 F4.2 --- CFM Correction factor for the Galactic absorption in the medium band (1.0-2.0keV) 90- 92 A3 --- Ref Reference (see refs.dat file)
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name Galaxy name (G1) 14- 19 A6 --- Comp Component 21- 23 A3 --- Type Knot type (G2) 25 A1 --- Reg [cre] Region size format: circular, rectangular or elliptical. 27- 30 F4.2 arcsec Reg1 Region size 1 for flux measurement 31 A1 --- --- [x] 32- 35 F4.2 arcsec Reg2 Region size 2 for flux measurement 37- 40 F4.2 GHz nu Radio frequency 42- 49 F8.2 mJy SR Radio flux density at frequency nu 51- 56 F6.2 aW/m2 FS Soft (0.5-1keV) X-ray flux; 10-15cgs 58- 62 F5.3 aW/m2 e_FS Uncertainty in FS 64- 69 F6.2 aW/m2 FM Medium (1-2keV) X-ray flux; 10-15cgs 71- 74 F4.2 aW/m2 e_FM Uncertainty in FM 76- 81 F6.2 aW/m2 FH Hard (2-7keV) X-ray flux; 10-15cgs 83- 87 F5.2 aW/m2 e_FH Uncertainty in FH 89- 94 F6.2 aW/m2 FT Total (0.5-7keV) X-ray flux; 10-15cgs 96-100 F5.2 aW/m2 e_FT Uncertainty in FT 102-108 F7.3 --- X/R X-ray to radio flux ratio rho (3) 110-116 F7.3 --- e_X/R Uncertainty in rho
Note (3): where ρ=FT/ν*SR and FT is corrected for Galactic absorption.
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 3 A3 --- Ref Reference code 5- 23 A19 --- BibCode Bibcode 25- 44 A20 --- Aut First author's name
Global notes: Note (G1): Some galaxy names were fixed at CDS: * "PG 1222-216" replaced by "PG 1222+216" (table7) * "PKS 1046-406" replaced by "PKS 1046-409" (table7) * "1317-520" replaced by "1317+520" (table7). * "PKS 1229-027" replaced vy "1229-021" (tables 2 and table7) Note (G2): Class (and knot types) as follows: BL = BL Lac QSR = quasar hsq = hotspot in quasar CDQ = Core-dominated quasar (35 sources). See Orr & Browne (1982MNRAS.200.1067O). kqc = knot in core-dominated quasar LDQ = Lobe-dominated quasar (17 sources). See Orr & Browne (1982MNRAS.200.1067O). See section 1 for further details. kql = knot in lobe-dominated quasar FR I = Radio galaxy with RFR≤0.5 where RFR is the ratio of the distance between the regions of highest surface brightness on opposite sides of the central galaxy and/or quasar, to the total extent of the source up to the lowest brightness contour in the radio map. See Fanaroff & Riley, 1974MNRAS.167P..31F. k1 = knot in FR I radio galaxy FR II = Radio galaxy with RFR≥0.5 where RFR is the ratio of the distance between the regions of highest surface brightness on opposite sides of the central galaxy and/or quasar, to the total extent of the source up to the lowest brightness contour in the radio map. See Fanaroff & Riley, 1974MNRAS.167P..31F. k2 = knot in FR II radio galaxy
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 12-Jan-2012
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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