GCN Circular 20898
Subject
LIGO/Virgo G275404: P200/DBSP Classification of iPTF Candidates
Date
2017-03-17T22:06:10Z (8 years ago)
From
Mansi M. Kasliwal at Caltech <mansi@astro.caltech.edu>
S. M. Adams, J. Jencson, K. Burdge, N. Blagorodnova, M. M. Kasliwal
(Caltech) and F. Taddia (OKC)
report on behalf of the iPTF (intermediate Palomar Transient Factory) and
GROWTH (Global Relay of Observatories Watching Transients Happen)
collaborations
On UT 2017-03-07 and 2017-03-16, we spectroscopically classified the
following iPTF optical transient candidates (LVC GCN#20790) using the
Double Beam Spectrograph (Oke & Gunn 1982) on the Palomar 200-inch Hale
Telescope. All spectra were reduced using the pyraf-dbsp pipeline (Bellm &
Sesar 2016) and spectral matching done using SNID and Superfit.
Name, Redshift, Classification, Notes
(2017-03-07)
iPTF17bps, z=0.109, SN Ia, best match is SN2006ev at +11d
iPTF17bpt, z=0.785, AGN (but see LVC GCN # 20814)
(2017-03-16)
iPTF17bru, z=0.103, SN Ia, best match is SN1989B +13d
iPTF17bsi, z=0.031, SN II, best match is SN2004dj +0d (consistent with LVC
GCN # 20814)