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Table 1.
Colors, absolute magnitudes, and spectral type relations obtained from the polynomial fitting Y = aX 2 + bX + c.
| Y | X | X-range | a | b | c |
|---|---|---|---|---|---|
| MG | SpT | M7–T6 | −0.020 ± 0.001 | 0.985 ± 0.025 | 8.298 ± 0.135 |
| MJ | SpT | M7–T6 | −0.011 ± 0.001 | 0.627 ± 0.023 | 6.372 ± 0.122 |
| MH | SpT | M7–T6 | −0.007 ± 0.001 | 0.503 ± 0.023 | 6.453 ± 0.122 |
| MKs | SpT | M7–T6 | −0.003 ± 0.001 | 0.387 ± 0.023 | 6.709 ± 0.122 |
| G − G RP | SpT | M7–T6 | 0 | 0.029 ± 0.001 | 1.358 ± 0.005 |
| G − J | SpT | M9–T6 | 0 | 0.108 ± 0.003 | 3.603 ± 0.036 |
| J − K s | SpT | M7–L9 | 0 | 0.0635 ± 0.002 | 0.562 ± 0.016 |
| MJ | J − K s | 0.5–2.2 | 2.119 ± 0.116 | −2.531 ± 0.282 | 10.967 ± 0.172 |
Notes. SpT ranges from 7 (for M7) to 26 (for T6). We list the range in which the relations are valid.
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