Access to Astronomical Catalogues

← Click to display the menu
J/other/ChJAA/8.385   Superluminal motion in AGN             (Zhang+, 2008)

Statistics of superluminal motion in active galactic nuclei. Zhang Y.-W., Fan J.-H. <Chinese J. Astron. Astrophys., 8, 385-394 (2008)> =2008ChJAA...8..385Z
ADC_Keywords: Active gal. nuclei ; BL Lac objects ; QSOs ; Proper motions; Redshifts Keywords: galaxies: jets - galaxies: general - BL Lacertae objects: active - quasars: data analysis Abstract: We have collected an up-to-date sample of 123 superluminal sources (84 quasars, 27 BL Lac objects and 12 galaxies) and calculated the apparent velocities (βapp) for 224 components in the sources with the Λ-CDM model. We checked the relationships between their proper motions, redshifts, βapp and 5GHz flux densities. Our analysis shows that the radio emission is strongly boosted by the Doppler effect. The superluminal motion and the relativistic beaming boosting effect are, to some extent, the same in active galactic nuclei. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 77 224 The 224 individual feature data of 123 superluminal sources refs.dat 283 40 References
See also: J/ApJ/430/467 : Extragalactic sources superluminal motions (Vermeulen+, 1994) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name Name (HHMM+DDd, B1950) 10- 16 A7 --- Class Classification (1) 18- 23 F6.4 --- z Redshift 25- 30 A6 --- r_z Reference for z, in refs.dat file 32- 37 F6.3 mas/yr pm Proper motion 39- 43 F5.3 mas/yr e_pm ? rms uncertainty on pm 45- 50 A6 --- r_pm Reference for pm, in refs.dat file 52- 58 F7.3 --- betapp Apparent velocity (βapp=vapp/c) 60- 64 F5.2 --- e_betapp ? rms uncertainty on betapp 66- 71 F6.3 Jy S5GHz ? Observed flux density at 5GHz 73- 77 A5 --- r_S5GHz Reference for S5GHz, in refs.dat fiale
Note (1): All sources have been classified as one of three types: Q the quasar, G the galaxy, and B the BL Lac object C1, C2, ... C8 stand for the individual components which some authors denote by A-E, K, J and S. In the present paper, we directly used the component identification from the literature. The quasar suffixess are: c for core-selected, l for lobe-selected and p for compact symmetric.
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Ref Reference code 8- 26 A19 --- BibCode BibCode 28- 44 A17 --- Aut Author's name 47-283 A237 --- Com Comments
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 07-May-2010
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

catalogue service

© Unistra/CNRS