English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present new spectroscopic data of the BL Lac RGB 2243+203, and itssurroundings, obtained with the OSIRIS Multi Object Spectrograph (MOS) mountedin the Gran Telescopio Canarias (GTC). The spectra of neither the BL Lac norits host galaxy show any spectral feature, thus hindering direct determinationof its redshift. The spectroscopic redshift distribution of objects in the MOSfield of view shows four galaxies with redshift between 0.5258 and 0.5288. Wemake use of a statistical analysis to test the possibility that the targeted BLLac may be a member of that group. By using the spectroscopic redshiftsobtained with our GTC observations, we found that this probability is between86% and 93%.

New GTC Spectroscopic Data and a Statistical Study to Better Constrain the Redshift of the BL Lac RGB J2243+203