RSC08
e-EVN: EZ041B, RSC08A
AR Lacertae is a bright RS CVn eclipsing binary and an important radio star for linking the Gaia bright-end optical reference frame to the ICRF. We identified J220755.72+451821.4, only 27 arcmin (0.46 deg) from AR Lac The candidate calibrator has remained at 20–40 mJy from 144 MHz to 3 GHz, is unresolved in VLA Sky Survey, and has an approximately flat spectrum (? ? 0.06), consistent with a compact core. We request one-hour pilot e-VLBI observations at 5 GHz and one-hour follow-up VLBI observations at 22 GHz. Successful detections would establish its suitability for future high-precision phase-referenced astrometry of AR Lac.
Observation pages at the EVN archive:
Context for this dataThis data is part of the archive of VLBI data maintained by JIVE on behalf of the EVN, a network of radio telescopes located primarily in Europe and Asia, with additional antennas in South Africa. The EVN archive itself has the DOI https://doi.org/10.17616/R3Z197