VizieR Online Data Catalog: RoboPol sample of optical polarimetric standards (Blinov+, 2023)

We obtained 1044 polarization measurements of 107 stars using two different polarimeters. Most observations were performed in the Cousins R-band and the SDSS r'-band with the RoboPol polarimeter along a 4-yr time interval. After applying a variability analysis to these monitoring data, we selected 65 stars that have five or more measurements and do not demonstrate significant variability in linear polarization in the red bands. These stars are listed in Table 2, and they can be used as optical polarimetric standards for calibration of instrumental polarization. For 24 stars, we did not have enough data to conclude whether they are variable or stable, while the remaining 18 stars were found to exhibit significant variability in polarization.

(4 data files).