GCN Circular 20762
Subject
LIGO/Virgo G275404: Keck LRIS classification of MASTER PSN candidate
Event
Date
2017-02-27T18:59:08Z (9 years ago)
From
Mansi M. Kasliwal at Caltech <mansi@astro.caltech.edu>
N. Blagorodnova (Caltech), A. Ho (Caltech), T. Hung (UMd), K. Vyhmeister
(Caltech), S. R. Kulkarni (Caltech), D. Cook (Caltech), A. van Sistine (UW
Milwaukee) and M. M. Kasliwal (Caltech)
report on behalf of the iPTF and GROWTH collaborations
We observed the transient MASTER PSN reported in LVC GCN #20759, using LRIS
on the Keck I Telescope, on 2017-02-26 at 05:45 UT. The spectrum shows
relatively broad features at z=0.017. A SNID fit is consistent with a Type
Ic (possibly Ic broad-line) a month after maximum light. The host galaxy,
which does not have a previously known spectroscopic redshift, is also a
line emitter in the CLU (Census of the Local Universe; Cook et al. 2017)
narrow-band redshifted Halpha imaging, consistent with being local.