J/MNRAS/522/767 Multi-band optical variability of 12 blazars (Jovanovic+, 2023)
Multi-band optical variability of a newly discovered 12 blazars sample
from 2013 - 2019.
Jovanovic M.D., Damljanovic G., Taris F., Gupta A.C., Bhatta G.
<Mon. Not. R. Astron. Soc. 522, 767-791 (2023)>
=2023MNRAS.522..767J 2023MNRAS.522..767J (SIMBAD/NED BibCode)
ADC_Keywords: QSOs ; BL Lac objects ; Photometry, VRI
Keywords: galaxies: active - BL Lacertae objects: general - quasars: general -
galaxies: photometry
Abstract:
Here we present the first optical photometric monitoring results of a
sample of twelve newly discovered blazars from the ICRF - Gaia CRF
astrometric link. The observations were performed from April 2013
until August 2019 using eight telescopes located in Europe. For a
robust test for the brightness and colour variability, we use Abbe
criterion and F-test. Moreover, linear fittings are performed to
investigate the relation in the colour-magnitude variations of the
blazars. Variability was confirmed in the case of 10 sources; two
sources, 1429+249 and 1556+335 seem to be possibly variable. Three
sources (1034+574, 1722+119, and 1741+597) have displayed large
amplitude brightness change of more than one magnitude. We found that
the seven sources displayed bluer-when-brighter variations, and one
source showed redder-when-brighter variations. We briefly explain the
various AGN emission models which can explain our results.
Description:
The file table3.dat contains the name of the sources together with,
observation dates in Julian day, the magnitudes, their corresponding
uncertainties, and bands.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
sources.dat 38 12 List of observed sources
table3.dat 43 1090 Light curves
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Byte-by-byte Description of file: sources.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name QSO name (IERS BHHMM+DDd)
16- 17 I2 h RAh Simbad right ascension (J2000)
19- 20 I2 min RAm Simbad right ascension (J2000)
22- 26 F5.2 s RAs Simbad right ascension (J2000)
28 A1 --- DE- Simbad declination sign (J2000)
29- 30 I2 deg DEd Simbad declination (J2000)
32- 33 I2 arcmin DEm Simbad declination (J2000)
35- 38 F4.1 arcsec DEs Simbad declination (J2000)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Name QSO name (IERS BHHMM+DDd)
16- 28 F13.5 --- JD Julian date of observation
30- 35 F6.3 mag mag Magnitude in filter
37- 41 F5.3 mag e_mag rms uncertainty of the magnitude determination
43 A1 --- Filter [VR] Band
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Acknowledgements:
Miljana D. Jovanovic, miljana(at)aob.rs
(End) Patricia Vannier [CDS] 22-Mar-2023