J/ApJ/609/539 Kinematics of parsec-scale radio jets (Kellermann+, 2004)
Sub-milliarcsecond imaging of quasars and active galactic nuclei. III. Kinematics of parsec-scale radio jets. Kellermann K.I., Lister M.L., Homan D.C., Vermeulen R.C., Cohen M.H., Ros E., Kadler M., Zensus J.A., Kovalev Y.Y. <Astrophys. J., 609, 539-563 (2004)> =2004ApJ...609..539K
ADC_Keywords: Active gal. nuclei ; QSOs ; Radio continuum Keywords: galaxies: active - galaxies: jets - quasars: general - radio continuum: galaxies Abstract: We report the results of a 15GHz (2cm) multi-epoch Very Long Baseline Array (VLBA) program, begun in 1994 to study the outflow in radio jets ejected from quasars and active galaxies. Description: Our observations were made during 29 separate observing sessions between 1994 and 2001. Typically, we obtained images of each source at three to seven epochs over this 7yr period. Sources were usually observed at 618month intervals. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 67 135 General Source Properties table2.dat 75 282 Proper motions
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name IAU name (based on B1950.0 position) 10 A1 --- f_Name [def] Flag on Name (1) 12- 29 A18 --- ONames Other names 31 A1 --- Memb Sub-sample member 33 A1 --- Class Veron-Cetty & Veron (Cat. VII/224) catalog optical classification (2) 35 A1 --- f_Class [abc] Flag on Class (3) 37- 43 F7.5 --- z ? Redshift from Veron-Cetty & Veron (Cat. VII/224) (4) 45- 50 A6 --- RSpec Radio spectrum description 52- 58 A7 --- RMorph Radio morphology classification (5) 60- 64 F5.2 Jy SVLBI Cleaned VLBI 15GHz (2cm) flux density 66 A1 --- E-ID [YPN] EGRET gamma-ray identification (6)
Note (1): Flag on Name is defined as follows: d = The source 0218+357 is a gravitationally lensed AGN which we do not include in our statistical analysis. e = The complex source 0316+413 (3C 84) satisfies our selection criteria, but was observed as part of a separate monitoring program Walker et al. (2000ApJ...530..233W). It is included in our statistical analysis for completeness. f = Source has large or diffuse structures that are not adequately sampled by our observations. Note (2): The optical classification has the following meaning: Q = quasar; B = BL Lac object; G = active galaxy; U = unidentified. Note (3): Flag on Class is defined as follows: a = Source not in the Veron-Cetty & Veron (2001, Cat. VII/224) catalog. b = Source classified as quasar in the Veron-Cetty & Veron (2001, Cat. VII/224) catalog. c = Source classified as galaxy in the Veron-Cetty & Veron (2001, Cat. VII/224) catalog. Note (4): Redshift from Veron-Cetty & Veron (2001, Cat. VII/224). (The redshifts for 0026+346, 0727-115 and 1155+251 are from Zensus et al. (2002AJ....124..662Z), that of 0202+149 is from Stickel et al. (1996ApJ...468..556S), 0218+357 is from Lawrence (1996IAUS..173..299L), 0754+100 is from Carangelo et al. (2003A&A...412..651C) and that of 2209+236 is from Sowards-Emmerd, Remani, and Michelson (2003, Cat. J/ApJ/590/109).) Note (5): The radio morphology classification is defined as follows: CJ = core-jet; 2S = two-sided jet; N = naked core; LD = lobe-dominated; CSS = compact-steep spectrum object. Note (6): According to Mattox et al. (2001, Cat. J/ApJS/135/155) and Sowards-Emmerd, Remani, and Michelson (2003, Cat. J/ApJ/590/109), the EGRET gamma-ray identification is defined as follows: Y = highly probable identification; P = probable identification; N = no identification.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name IAU name 10 A1 --- f_Name [s] Flag on Name (1) 11 A1 --- n_Name [a] Note on Name (1) 13- 15 A3 --- m_Name Component identifier 17 A1 --- c1 [d] Indicates brightest component member 19- 20 I2 --- NEpoch Number of epochs with measured position 22- 25 F4.1 mas Rad ? Mean radial position (2) 27- 30 I4 deg PA [-178/179]? Mean structural position angle (2) 32- 37 F6.3 mas/yr muR Angular radial speed (total proper motion) 39- 43 F5.3 mas/yr e_muR The 1σ uncertainty in muR 45- 50 F6.2 --- beta ? Radial speed in speed of light units (3) 52- 56 F5.2 --- e_beta ? The 1σ uncertainty in beta 58- 64 F7.2 yr t0 ? Extrapolated epoch of origin 66- 70 F5.2 yr e_t0 ? The 1σ uncertainty in t0 72 A1 --- Dcomp Distinct component (4) 74 A1 --- QRate Overall quality rating
Note (1): Flags on Name, defined as follows: s = Source is a member of the representative sample; a = Motions for 0316+413 which are taken from unpublished data do not appear in figure 10. Motions for 0238-084 are from Vermeulen et al. (2003ASPC..300...43V). Note (2): Relative to the core. Note (3): Computed assuming H0=70km/s/Mpc, Ωm=0.3, and ΩΛ=0.7. Note (4): Does the component satisfy criterion "b" in Section 4.2, i.e., is it a well defined feature?
History: From electronic version of the journal * 15-Jun-2005: in table2, replaced name "2007+776" by "2007+777" to be compatible with nomenclature of table1. References: Kellermann et al., Paper I, 1998AJ....115.1295K Zensus et al., Paper II, 2002AJ....124..662Z
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 11-Feb-2005
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