J/AJ/138/1874 MOJAVE. VI. Kinematic analysis of blazar jets (Lister+, 2009)
MOJAVE: monitoring of jets in active galactic nuclei with VLBA experiments.
VI. Kinematics analysis of a complete sample of blazar jets.
Lister M.L., Cohen M.H., Homan D.C., Kadler M., Kellermann K.I.,
Kovalev Y.Y., Ros E., Savolainen T., Zensus J.A.
<Astron. J., 138, 1874-1892 (2009)>
=2009AJ....138.1874L 2009AJ....138.1874L
ADC_Keywords: Radio sources ; BL Lac objects ; Active gal. nuclei ; QSOs ;
Keywords: BL Lacertae objects: general - galaxies: active - galaxies: jets -
radio continuum: galaxies - quasars: general - surveys
Abstract:
We discuss the jet kinematics of a complete flux-density-limited
sample of 135 radio-loud active galactic nuclei (AGNs) resulting from
a 13 year program to investigate the structure and evolution of
parsec-scale jet phenomena. Our analysis is based on new 2cm Very Long
Baseline Array (VLBA) images obtained between 2002 and 2007, but
includes our previously published observations made at the same
wavelength, and is supplemented by VLBA archive data. In all, we have
used 2424 images spanning the years 1994-2007 to study and determine
the motions of 526 separate jet features in 127 jets.
Description:
The data analyzed in this study were presented in Paper V (Lister et
al., 2009, Cat. J/AJ/137/3718), and consist of a set of 2424 2cm VLBA
observations of the complete flux-density-limited MOJAVE sample of 135
AGNs spanning from 1994 August 31 to 2007 September 6.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
agn.dat 44 135 AGN sample
table1.dat 57 12712 Fitted jet components
table2.dat 158 526 Jet kinematics
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See also:
J/A+A/545/A113 : MOJAVE IX. Core shift effects (Pushkarev+, 2012)
J/ApJ/722/L7 : Fermi/LAT detected MOJAVE AGNs (Pushkarev+, 2010)
J/ApJ/710/764 : Extended radio emission in MOJAVE blazars (Kharb+, 2010)
J/AJ/137/3718 : 15GHz monitoring of AGN jets with VLBA (Lister+, 2009)
J/ApJ/706/1253 : MOJAVE VII. Blazar jet acceleration (Homan+, 2009)
J/ApJS/171/376 : MOJAVE. III. VLA 1.4GHz images (Cooper+, 2007)
J/AJ/131/1262 : AGN jets circular polarization images at 15GHz (Homan+, 2006)
J/AJ/130/1389 : Linear polarization of AGN jets at 15GHz (Lister+, 2005)
J/AJ/130/1418 : AGN jet kinematics (Jorstad+, 2005)
J/ApJ/609/539 : Kinematics of parsec-scale radio jets (Kellermann+, 2004)
Byte-by-byte Description of file: agn.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name IAU name (HHMM+DDMM, B1950)
10- 11 I2 h RAh SIMBAD hour of right ascension (J2000)
13- 14 I2 min RAm SIMBAD minute of right ascension (J2000)
16- 19 F4.1 s RAs SIMBAD second of right ascension (J2000)
21 A1 --- DE- SIMBAD sign of declination (J2000)
22- 23 I2 deg DEd SIMBAD degree of declination (J2000)
25- 26 I2 arcmin DEm SIMBAD arcminute of declination (J2000)
28- 29 I2 arcsec DEs SIMBAD arcsecond of declination (J2000)
31- 44 A14 --- SName SIMBAD name
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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 (HHMM+DDMM, B1950)
10- 11 I2 --- ID Component name; zero is core component
13 A1 --- f_ID [a] ID component not used in kinematic fits
15- 24 A10 "YYYY/MM/DD" Date Date of the observation
26- 31 F6.3 Jy I ? Flux density at 2cm (15GHz)
33- 37 F5.2 mas r ? Position offset (1)
39- 43 F5.1 deg PA ? Position angle (2)
45- 48 F4.2 mas aMaj ? Fitted Gaussian FWHM of major axis
50- 53 F4.2 --- b/a ? Fitted Gaussian axial ratio
55- 57 I3 deg MajPA ? Fitted Gaussian major axis position angle
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Note (1): From the core component (or map center for the core component
entries).
Note (2): with respect to the core components (or map center for the core
component entries).
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Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name IAU name (HHMM+DDMM, B1950)
10- 11 I2 --- ID Component name; zero is core component
13- 14 I2 --- N Number of fitted epochs
16- 19 I4 mJy Mean flux density at 2cm
21- 24 F4.1 mas Mean distance from core component
26 A1 --- n_ [d] Component unusually slow (1)
28- 32 F5.1 deg Mean position angle with respect to the core
component
34- 37 I4 uas/yr mu Magnitude of fitted angular velocity vector
39- 41 I3 uas/yr e_mu Uncertainty in mu
43 A1 --- n_mu [a] Component shows acceleration (1)
45- 51 F7.4 --- beta ? Fitted speed in units of the speed of light
53- 59 F7.4 --- e_beta ? Uncertainty in beta
61- 66 F6.2 deg phi Position angle of velocity vector φ
68- 73 F6.2 deg e_phi Uncertainty in phi
75- 76 A2 --- n_phi [c? ] Component shows inward motion (1)
78- 83 F6.2 deg Off Offset between mean position angle and
velocity vector position angle
85- 90 F6.2 deg e_Off Uncertainty in Off
92- 93 A2 --- n_Off [b? ] Component shows non-radial motion (1)
95-101 F7.2 uas/yr2 mud.pa ? Acceleration parallel to velocity direction
103-108 F6.2 uas/yr2 e_mud.pa ? Uncertainty in mud.pa
110-116 F7.2 uas/yr2 mud.pe ? Acceleration perpendicular to velocity
direction
118-123 F6.2 uas/yr2 e_mud.pe ? Uncertainty in mud.pe
125-132 F8.3 yr Tej ? Fitted ejection date
134-140 F7.3 yr e_Tej ? Uncertainty in Tej
142-148 F7.2 yr Tmid Date of reference; middle epoch used for fit
150-153 F4.2 mas e_RA Right Ascension error of individual epoch
positions
155-158 F4.2 mas e_DE Declination error of individual epoch positions
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Note (1): Flag as follows:
a = Component shows significant acceleration;
b = Component shows significant non-radial motion;
c = Component shows significant inward motion;
d = Component is unusually slow (low pattern speed) (see Section 3.5).
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History:
From electronic version of the journal
References:
Lister et al. Paper I. 2005AJ....130.1389L 2005AJ....130.1389L Cat. J/AJ/130/1389
Homan et al. Paper II. 2006AJ....131.1262H 2006AJ....131.1262H Cat. J/AJ/131/1262
Cooper et al. Paper III. 2007ApJS..171..376C 2007ApJS..171..376C Cat. J/ApJS/171/376
Cara et al. Paper IV. 2008ApJ...674..111C 2008ApJ...674..111C
Lister et al. Paper V. 2009AJ....137.3718L 2009AJ....137.3718L Cat. J/AJ/137/3718
Homan et al. Paper VII. 2009ApJ...706.1253H 2009ApJ...706.1253H Cat. J/ApJ/706/1253
Hovatta et al. Paper VIII. 2012AJ....144..105H 2012AJ....144..105H Cat. J/AJ/144/105
Pushkarev et al. Paper IX. 2012A&A...545A.113P 2012A&A...545A.113P Cat. J/A+A/545/A113
Lister et al. Paper X. 2013AJ....146..120L 2013AJ....146..120L Cat. J/AJ/146/120
Hovatta et al. Paper XI. 2014AJ....147..143H 2014AJ....147..143H Cat. J/AJ/147/143
Homan et al. Paper XII. 2015ApJ...798..134H 2015ApJ...798..134H Cat. J/ApJ/798/134
Lister et al. Paper XIII. 2016AJ....152...12L 2016AJ....152...12L Cat. J/AJ/152/12
Pushkarev et al. Paper XIV. 2017MNRAS.468.4992P 2017MNRAS.468.4992P Cat. J/MNRAS/468/4992
Lister et al. Paper XV. 2018ApJS..234...12L 2018ApJS..234...12L Cat. J/ApJS/234/12
Hodge et al. Paper XVI. 2018ApJ...862..151H 2018ApJ...862..151H Cat. J/ApJ/862/151
Lister et al. Paper XVII. 2019ApJ...874...43L 2019ApJ...874...43L Cat. J/ApJ/874/43
Lister et al. Paper XVIII. 2021ApJ...923...30L 2021ApJ...923...30L Cat. J/ApJ/923/30
Homan et al. Paper XIX. 2021ApJ...923...67H 2021ApJ...923...67H Cat. J/ApJ/923/67
Pushkarev et al. Paper XX. 2023MNRAS.520.6053P 2023MNRAS.520.6053P
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 28-Dec-2011