Issue |
A&A
Volume 498, Number 3, May II 2009
|
|
---|---|---|
Page(s) | 723 - 723 | |
Section | Extragalactic astronomy | |
DOI | https://doi.org/10.1051/0004-6361/200811150e | |
Published online | 25 March 2009 |
Erratum
Doppler factors, Lorentz factors, and viewing angles for quasars, BL Lacertae objects and radio galaxies
T. Hovatta1 - E. Valtaoja2,3 - M. Tornikoski1 - A. Lähteenmäki1
1 - Metsähovi Radio Observatory, TKK, Helsinki University of Technology, Metsähovintie 114, 02540 Kylmälä, Finland
2 - Tuorla Observatory, University of Turku, Väisäläntie 20, 21500 Piikkiö, Finland
3 - Department of Physics and Astronomy, University of Turku, Vesilinnantie 5, 20100 Turku, Finland
A&A, 494, 527-537 (2009), DOI: 10.1051/0004-6361:200811150
Key words: galaxies: active - galaxies: jets - radio continuum: galaxies - radiation mechanisms: non-thermal - quasars: general - errata, addenda
We report an error in the apparent speed, Lorentz factor and viewing
angle of the source 0923+392 (4C 39.25) in the paper Hovatta et al.
2009 (A&A, 494, 527).
Due to the error in the original MOJAVE database, the apparent speed value
of 0923+392 changes from 42.9c to 4.29c. This affects the Lorentz factor
and viewing angle of the source, and the new values are
and
.
The error
does not affect any of our major conclusions, and as the source was
excluded from most of the figures and statistics due to the extreme
Lorentz factor, most of the figures remain the same. In Fig. 10 the
source is shown in the top of the plot as an LPQ source, and it now shifts to coordinates
and
.
The corrected figure is
shown in this erratum. Subsequently, parts in the
discussion concerning the extremity of this source are obsolete.
![]() |
Figure 10:
Observable quantities
|
Open with DEXTER |
All Figures
![]() |
Figure 10:
Observable quantities
|
Open with DEXTER | |
In the text |
Copyright ESO 2009
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