Table A.4
Spectral observations log for iPTF13z.
| UT Date | Epoch (days) | Telescope | Instrument | Resolution (km s-1) | Spectral range (Å) | Comments |
|
|
||||||
| 2013 February 18 | 17.08 | P200 | DBSP | 200 | 3210–10 100 | Classification spectrum |
| 2013 August 13 | 192.7 | APO | DIS | 340 | 3340–8500 | |
| 2014 January 12 | 344.79 | NOT | ALFOSC | 480 | 5000–9120 | |
| 2014 February 12 | 375.74 | NOT | ALFOSC | 690 | 3400–9120 | |
| 2014 March 1 | 393.11 | Keck 2 | DEIMOS | 130 | 4900–10 130 | |
| 2014 April 27 | 450.15 | Keck 2 | DEIMOS | 130 | 4910–10 150 | Noisy spectrum |
| 2014 May 26 | 479.05 | Keck 2 | DEIMOS | 130 | 4920–10 140 | |
| 2014 July 2 | 515.97 | Keck 2 | DEIMOS | 130 | 4550–9600 | |
| 2014 July 31 | 544.87 | Keck 1 | LRIS | 260 | 3070–10 300 | |
| 2015 January 26 | 723.76 | NOT | ALFOSC | 500 | 3650–9110 | Dominated by host |
| 2015 September 17 | 957.75 | Keck 2 | DEIMOS | 140 | 4750–9600 | Dominated by host |
Notes. For our spectroscopy, we used the Double Spectrograph (DBSP) on the 5 m telescope (P200) at Palomar Observatory, the Dual Imaging spectrograph (DIS) on the Astrophysical Research Consortium 3.5 m telescope at Apache Point Observatory (APO; New Mexico, USA), the Andalucia Faint Object Spectrograph and Camera (ALFOSC) on the 2.5 m Nordic Optical Telescope (NOT) at the Roque de los Muchachos observatory (La Palma, Spain), the DEep Imaging Multi-Object Spectrograph (DEIMOS) on the 10 m Keck 2 telescope at the W. M. Keck Observatory (Hawaii, USA), and the Low Resolution ImagingSpectrometer (LRIS) on the 10 m Keck 1 telescope. The resolution of the spectra were measured using the [O iii] λ4959 line (or, when resolved, the [S ii] λ6717, 6731 lines) of the host galaxy. The epoch of the measurements are given relative to the time of SN discovery (JD 2 456 324.98).
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