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 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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 67 135 General Source Properties
table2.dat 75 282 Proper motions
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Byte-by-byte Description of file: table1.dat
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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)
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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 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 2002AJ....124..662Z), that of 0202+149 is from Stickel et al.
(1996ApJ...468..556S 1996ApJ...468..556S), 0218+357 is from Lawrence
(1996IAUS..173..299L 1996IAUS..173..299L), 0754+100 is from Carangelo et al.
(2003A&A...412..651C 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.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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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
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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 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?
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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 1998AJ....115.1295K
Zensus et al., Paper II, 2002AJ....124..662Z 2002AJ....124..662Z
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 11-Feb-2005