2022RNAAS...6..268W

Query : 2022RNAAS...6..268W

2022RNAAS...6..268W - Research Notes of the AAS, 6, 268 (2022/December-0)

A VLA Light Curve Spanning 43.8 yr for the Compact Symmetric Object OQ 208.

WROBEL J.M. and SJOUWERMAN L.O.

Abstract (from CDS):

Compact symmetric objects are young, jetted active galactic nuclei defined in part by their slow radio continuum variability. Radio light curves spanning decades can help characterize their evolutionary trends. Here, we present a preliminary VLA light curve at 1.465 GHz for the compact symmetric object OQ 208, a frequently observed calibrator. The light curve spans 43.8 yr, or about 17% of OQ 208's estimated age. The light curve shows two distinct steady levels separated by a decade-long rise at a rate of about 1% yr–1, corresponding to a cumulative increase of about 12% in flux density.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Active galactic nuclei - Aperture synthesis - Radio continuum emission - Radio jets - Time domain astronomy

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 QSO B0710+439 QSO 07 13 38.16413557 +43 49 17.2072102   20.7       ~ 256 0
2 Mrk 668 BLL 14 07 00.39441712 +28 27 14.6901341   16.13 15.35 10.29   ~ 826 3

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