Table 1
Known η Cha members.
| RECX | Name | G | BP-RP | Sp. type(s) | Hα | SED class | Remarks |
|---|---|---|---|---|---|---|---|
| 1 | EG Cha | 10.04 | 1.57 | K7+M0 | −1 | III | M99 |
| 2 | η Cha | 5.44 | −0.13 | B8 | debris | M99 | |
| 3 | EH Cha | 13.09 | 2.54 | M3 | −2/−3 | TO | M99, L10 |
| 4 | EI Cha | 11.91 | 2.06 | M1 | −2/−4 | TO | M99, L10 |
| 5 | EK Cha | 13.72 | 2.86 | M4 | −14/−35 | TO | M99, L10 |
| 6 | EL Cha | 13.00 | 2.50 | M3 | −4/−5 | III | M99, L10 |
| 7 | EM Cha | 10.38 | 1.57 | K7+M1 | 0/−1 | III | M99, L10 |
| 8 | RS Cha | 6.01 | 0.33 | A7+A8+? | III | M99, L10 | |
| 9 | EN Cha | 13.80 | 3.13 | M4.5+M4.5 | −10/−13 | TO | M99, L10 |
| 10 | EO Cha | 11.80 | 1.92 | M0 | −1/−2 | III | M99, L10 |
| 11 | EP Cha | 10.67 | 1.54 | K6.5 | −3/−8 | II | M99, L10 |
| 12 | EQ Cha | 12.04 | 2.46 | M3+M3 | −4/−8 | III | M99, L10 |
| 13 | HD 75505 | 7.37 | 0.22 | A1 | III | ||
| 14 | ES Cha | 15.15 | 3.43 | M5 | −10 | flat/TO | L10 |
| 15 | ET Cha | 13.34 | 2.33 | M3+? | −90/−95 | II | L10 |
| 16 | 2M J08440914-7 833 457 | 16.22 | 3.32 | M5.5 | −58/−102 | flat | |
| 17 | 2MJ08385150-7 916136 | 14.78 | 3.53 | M5+M5 | −10/−12 | III | |
| 18 | 2MJ08361072-7908 183 | 15.42 | 3.76 | M5.5+M5.5 | −8/−13 | III |
Notes. Hα EW from Lawson et al. (2004); Song et al. (2004); Rugel et al. (2018), G and BP-RP magnitudes from Gaia EDR3, SED class from Sicilia-Aguilar et al. (2009), remarks: M99: X-ray source (RECX) in Mamajek et al. (1999), L10: X-ray source in López-Santiago et al. (2010).
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