GCN Circular 31595
Subject
ZTF22aaajecp/AT2022cmc: GMOS-N spectroscopy
Date
2022-02-16T00:55:47Z (3 years ago)
From
Tomas Ahumada at U. of Maryland <tahumada@astro.umd.edu>
T. Ahumada (UMD), C. Fremling (Caltech), A.Y.Q. Ho (UCB), M. M. Kasliwal
(Caltech), D. Perley (LJMU), I. Andreoni (JSI) , S. Anand (Caltech) report
on behalf of the ZTF collaboration
We obtained spectroscopy of ZTF22aaajecp/AT2022cmc (Andreoni et al., GCN
31590, Perley et al., GCN 31592, Pankov et al. GCN 31593) with the Gemini
Multi-Object Spectrographs (GMOS-N) mounted on the Gemini-North 8-meter
telescope on Mauna Kea, under our ToO program GN-2022A-Q-127 (PI: Ho). We
obtained 2x450 second exposures using the B600 grating and 2x450 second
exposures using the R400 grating, starting 2022-02-15 14:35 UTC.
After two independent reductions using DRAGONS (Labrie et al. 2019) and
Pyraf we report a featureless red continuum. The lack of any narrow or
broad lines in our spectral coverage (380nm to 910nm, although the S/N is
low blueward of 550 nm) is consistent with a cosmological origin (and
suggests an AGN-like or a Galactic origin is unlikely).
We thank the observers and the Gemini staff for their rapid response in
facilitating this Target of Opportunity observation.
--
Tomas Ahumada (he/him)
Ph.D. Candidate
Department of Astronomy
University of Maryland, College Park
NASA Goddard Space Flight Center, Code 661
B.Sc. Astronomy, Pontificia Universidad Cat��lica de Chile