Table 4
Journal of spectroscopic observations of SN 2012aa.
| UT Date | JD − | Phasea | Range | Telescopeb | Grating | Slit width | Dispersion | Exposure | S/Nc |
| (yyyy/mm/dd) | 2 450 000 | (days) | (μm) | (gr mm-1) | (′′) | (Å pix-1) | (s) | (pix-1) | |
|
|
|||||||||
| 2012/02/02.14 | 5959.64 | +08 | 0.34−1.03 | Lick | 600/300 | 2.0 | 1.02/4.60 | 1200 | 25 |
| 2012/02/16.97 | 5974.47 | +22 | 0.36−0.90 | IGO | 300 | 1.0 | 1.4 | 2700 | 30 |
| 2012/02/23.51 | 5981.01 | +29 | 0.34−1.00 | Lick | 600/300 | 2.0 | 1.02/4.60 | 1350 | 25 |
| 2012/03/12.84 | 5999.34 | +47 | 0.36−0.91 | NTT | 236 | 1.0 | 2.8 | 2700 | 35 |
| 2012/03/15.14 | 6001.64 | +50 | 0.34−1.01 | Keck-I | 600/400 | 1.0 | 0.63/1.16 | 600 | 30 |
| 2012/04/25.80 | 6043.30 | +91 | 0.47−0.89 | Gemini-S | 400 | 1.0 | 0.7 | 600 | 10 |
| 2012/05/17.53 | 6065.03 | +113 | 0.34−1.01 | Keck-I | 600/400 | 1.0 | 0.63/1.16 | 900 | 30 |
| 2014/07/22.89 | 6861.39 | +909 | 0.37−0.79 | NOT | 300 | 1.0 | 3.0 | 3×1500 | 28 |
Notes.
Lick: Kast on 3 m Shane reflector; IGO: IFOSC on 2 m IUCAA Girawali Observatory, India; NTT: EFOSC2 on 3.6 m New Technology Telescope, ESO, Chile; Keck-I: LRIS on 10 m Keck-I telescope, Mauna Kea, Hawaii; Gemini-S: GMOS-S on 8.1 m Gemini-South telescope, Chile; NOT: ALFOSC on 2.5 m Nordic Optical Telescope, La Palma, Canarias, Spain.
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