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Table 1

Log of the spectroscopic observations of SN 2015bh and its precusors.

Date Telescope Exposure Grism

20131112.191 OSIRIS/10.4 mGTC 830 R1000B
20150209.93 Asiago 3400–8200
20150414.96 OSIRIS/10.4 mGTC 3 × 450 R500B
20150516.856 TWIN/3.5 mCAHA 2 × 900 B
20150516.856 TWIN/3.5 mCAHA 2 × 900 R
20150516.885 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150516.893 OSIRIS/10.4 mGTC 3 × 180 R1000R
20150517.856 TWIN/3.5 mCAHA 2 × 900 B
20150517.856 TWIN/3.5 mCAHA 2 × 900 R
20150518.905 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150519.892 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150520.906 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150522.927 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150522.934 OSIRIS/10.4 mGTC 3 × 180 R1000R
20150525.860 CAFOS/2.2 mCAHA 600 Grism4
20150525.874 CAFOS/2.2 mCAHA 600 Grism7
20150524.894 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150526.921 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150529.918 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150530.251 HDS/Subaru 2 × 1200 (R = 40 000)
20150531.887 OSIRIS/10.4 mGTC 4 × 180 R1000B
20150602.882 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150604.890 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150604.896 OSIRIS/10.4 mGTC 300 R2500R
20150606.889 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150606.894 OSIRIS/10.4 mGTC 300 R2500R
20150610.897 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150614.888 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150617.903 OSIRIS/10.4 mGTC 3 × 180 R1000B
20150619.891 OSIRIS/10.4 mGTC 5 × 180 R1000B
20150927.248 OSIRIS/10.4 mGTC 3 × 300 R1000B
20151121.244 OSIRIS/10.4 mGTC 3 × 400 R1000B
20151121.258 OSIRIS/10.4 m GTC 3 × 400 R2500R
20151205.465 FOCAS/Subaru 2 × 600 B300
20160121.168 OSIRIS/10.4 mGTC 4 × 400 R1000B

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