Table 1
Radial velocity precisions of the dwarfs that can be attained for spectral resolving powers R and SNR in the stellar continua.
| R | SNR | RV precision (m s-1) | ||||||
| Y | J | H | K | Y | J | H | K | |
|
|
||||||||
| M9.5V-dwarf (Teff = 2200 K) + Case A | ||||||||
| 20 000 | 139 | 180 | 171 | 152 | 22.2 | 25.5 | 22.8 | 27.9 |
| 40 000 | 98 | 127 | 121 | 108 | 6.9 | 8.7 | 7.8 | 10.8 |
| 60 000 | 80 | 104 | 99 | 88 | 4.2 | 5.7 | 5.1 | 3.8 |
| 80 000 | 70 | 90 | 85 | 76 | 3.3 | 4.0 | 3.8 | 5.1 |
|
|
||||||||
| M9.5V-dwarf (Teff = 2200 K) + Case B | ||||||||
| 20 000 | 139 | 180 | 171 | 152 | 24.2 | 29.7 | 29.1 | 39.3 |
| 40 000 | 98 | 127 | 121 | 108 | 8.7 | 12.2 | 11.9 | 17.3 |
| 60 000 | 80 | 104 | 99 | 88 | 5.4 | 7.1 | 6.8 | 10.7 |
| 80 000 | 70 | 90 | 85 | 76 | 3.8 | 5.2 | 5.1 | 7.9 |
|
|
||||||||
| L-dwarf (Teff = 1800 K) + Case A | ||||||||
| 20 000 | 68 | 90 | 88 | 84 | 83.2 | 73.8 | 92.5 | 92.5 |
| 40 000 | 47 | 64 | 63 | 59 | 60.6 | 56.8 | 66.9 | 66.9 |
| 60 000 | 38 | 52 | 52 | 50 | 49.0 | 45.1 | 53.5 | 53.5 |
| 80 000 | 33 | 45 | 44 | 42 | 42.3 | 37.5 | 57.0 | 57.0 |
|
|
||||||||
| L-dwarf (Teff = 1800 K) + Case B | ||||||||
| 20 000 | 68 | 90 | 88 | 84 | 87.6 | 77.0 | 109.2 | 158.3 |
| 40 000 | 47 | 64 | 63 | 59 | 65.9 | 61.8 | 84.2 | 114.5 |
| 60 000 | 38 | 52 | 52 | 50 | 55.3 | 50.9 | 70.0 | 95.6 |
| 80 000 | 33 | 45 | 44 | 42 | 47.3 | 41.4 | 60.7 | 79.8 |
Notes. Case A shows the data analysis case of a complete and perfect removal telluric contamination, while Case B lists the RV precisions for the data analysis, where the telluric lines of a absorption depth of ≥ 3% were masked out.
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