Table 1.
Log of the spectroscopic observations of SN 2024bch.
| Date | JD | Phase | Telescope+Instrument | Grism/grating | Range | Resolution | Exposure |
|---|---|---|---|---|---|---|---|
| (days) | Å | (λ/Δλ) | (s) | ||||
| 20240129 | 2460339.45 | +1.40 | Ekar182+AFOSC | Gr04 | 3600 − 8200 | 310 | 1200 |
| 20240129 | 2460339.47 | +1.42 | Ekar182+AFOSC | VPH6+VPH7 | 3600 − 9200 | 380 + 420 | 900 + 900 |
| 20240130 | 2460340.48 | +2.44 | Ekar182+AFOSC | VPH6+VPH7 | 3600 − 9200 | 380 + 420 | 1800 + 1800 |
| 20240201 | 2460341.50 | +3.45 | Ekar182+AFOSC | VPH6+VPH7 | 3300 − 8800 | 380 + 420 | 2 × (1200 + 1200) |
| 20240201 | 2460341.56 | +3.51 | Ekar182+AFOSC | VPH4 | 6300 − 7000 | 3500 | 2 × 1800 |
| 20240204 | 2460345.33 | +7 | T122+B&C | 300tr | 3300 − 7400 | 740 | 3 × 1800 |
| 20240205 | 2460346.38 | +8 | Ekar182+AFOSC | VPH6+VPH7 | 3300 − 8800 | 380 + 420 | 1200 + 1200 |
| 20240213 | 2460354.46 | +16 | T122+B&C | 600tr | 5000 − 7400 | 1900 | 3 × 1800 |
| 20240310 | 2460380.34 | +42 | Ekar182+AFOSC | VPH7 | 3600 − 7200 | 420 | 900 |
| 20240317 | 2460386.51 | +48 | TNG+DOLoRes | LRB+LRR | 3600 − 9200 | 580 + 710 | 900 + 900 |
| 20240406 | 2460407.45 | +69 | Ekar182+AFOSC | VPH7 | 3800 − 7200 | 250 | 900 |
| 20240412 | 2460413.49 | +75 | Ekar182+AFOSC | VPHD1 (blue+red) | 3600 − 9200 | 1200 + 730 | 2700 |
| 20240515 | 2460445.83 | +107 | TNG+DOLoRes | LRB | 3600 − 8100 | 380 | 1800 |
| 20240515 | 2460446.47 | +108 | TNG+DOLoRes | VHRV+VHRR | 4800 − 7800 | 1530 + 2510 | 2700 + 2700 |
| 20240616 | 2460476.40 | +138 | TNG+DOLoRes | LRB+LRR | 3600 − 9200 | 580 + 710 | 1200 + 1200 |
| 20240630 | 2460492.42 | +154 | TNG+DOLoRes | LRB | 3600 − 8100 | 580 | 2700 |
Notes. Ekar182: 1.82 m Copernico telescope at the Asiago observatory (Mount Ekar) with the ‘Asiago Faint Object Spectrograph and Camera’ (AFOSC); T122: 1.22 m Galileo telescope at the Osservatorio Astrofisico di Asiago; TNG: 3.58 m Telescopio Nazionale Galileo at La Palma (Canary Islands, Spain) with the ‘Device Optimised for the Low Resolution’ (DOLoRes) camera. Phases refer to the estimated epoch of the SN explosion.
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