A. F. Valeev (SAO-RAS), Y.-D. Hu, A. J. Castro-Tirado and E.
Fernandez-Garcia (IAA-CSIC), V. Sokolov (SAO-RAS), I. Carrasco and A.
Castellon (UMA), S. Anand (Caltech) and J. Font (GRANTECAN, IAC, ULL),
on behalf of a larger collaboration, report:
Following the detection of AT2020pp/ZTF20aaervoa, and
AT2020py/ZTF20aaerxsd (Stein et al. GCNC 26673) within the error area of
the GW event S200105ae (LVC, GCNC 26640), we obtained optical spectra
covering the range 3700-7400 A with the 10.4m GTC telescope equipped
with OSIRIS in La Palma (Spain) starting on Jan 10, 04:17 UT, under poor
For AT2020pp/ZTF20aaervoa, the GTC spectrum is consistent with a SN IIP
at about 3 days after maximum at redshift z = 0.046 +/- 0.003,
consistent with the redshift of the host galaxy derived from the
emission lines (z = 0.0448 +/- 0.0005).
For AT2020py/ZTF20aaerxsd, the GTC spectrum is consistent with a SN Ia��
at about 3 days after maximum at redshift z = 0.055 +- 0.005, consistent
with the redshift of the host galaxy derived from the emission lines (z
=�� 0.0533 +/- 0.0005).
Therefore we consider that neither AT2020pp/ZTF20aaervoa nor
AT2020py/ZTF20aaerxsd are related to the S200105ae GW alert.
This message can be quoted.