VizieR Online Data Catalog: Optical flux behaviour of Fermi blazars (Marchesini+, 2016)
Abstract
Optical variability results for a sample of 9 BL Lacs (PKS 0048-097, PKS 0754+100, [HB89] 0827+243, PKS 0851+202, PKS 1253-055, PKS 1510-089, PKS 1749+096, PKS 2230+114, and PKS 2251+158) are presented. Column 1 gives the object name with the date, while the following columns give, respectively for bands V and R: the observational error, Sigma, obtained from the standard deviation of the control-comparison differential light-curve for each filter; the variability results; the confidence parameter from the F-test, F; the gamma corrective factor Gamma as described in "Howell S.B., Warnock III A. & Mitchell K.J., 1988AJ.....95..247H"; the number of points in the light curves; and the corresponding critical value, Ft for n=N-1 degrees of freedom, assuming a 99% confidence level.
Optical differential photometry results for a sample of 9 BL Lacs (PKS0048-097, PKS0754+100, [HB89]0827+243, PKS0851+202, PKS1253-055, PKS 1510-089, PKS 1749+096, PKS 2230+114, and PKS 2251+158) are presented. The file contains 9 columns: Column 1 gives the object name, column 2 the observed band, column 3 enumerates the number of observations taken, column 4 shows the Heliocentric Julian Date in days, column 5 the differential Heliocentric Julian Date (counting from the last integer date), column 6 the differential magnitude (i.e. the instrumental magnitude of the science object minus the instrumental magnitude of the comparison star, both on the same frame), column 7 its error, column 8 the differential control magnitude (i.e. i.e. the instrumental magnitude of the control object minus the instrumental magnitude of the comparison star, both on the same frame), and column 9 its error. (3 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- April 2016
- DOI:
- 10.26093/cds/vizier.35910021
- Bibcode:
- 2016yCat..35910021M
- Keywords:
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- BL Lac objects;
- Photometry