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Table 2.
Summary of MALATANG observational parameters for M82.
| Parameters | HCN(4–3) | HCO+(4–3) |
|---|---|---|
| Observation date | 2015 Dec. 10, 2015 Dec. 12 | 2015 Dec. 13 |
| Frequency | 354.265 GHz | 356.494 GHz |
| ROT_PA + | 65 deg | 65 deg |
 |
270 K | 338 K |
 (225 GHz) |
0.031 | 0.051 |
| tint * | 150 min | 100 min |
| Mapping region | 2′×2′ | 2′×2′ |
| FWHM | 14″ | 14″ |
Notes. + Position angle of the galaxy’s major axis, adopted for mapping the HCN and HCO+ emission. * Total integration time including ON + OFF.
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