Table 2
FIES, HARPS, and HARPS-N RV measurements of K2-216.
 |
RVb (km s−1) | texp | S∕Nc | GPd | FCOe | BISf | FWHMg |  h |
||
|---|---|---|---|---|---|---|---|---|---|---|
| (−2 450 000.0) | Value | Error | (s) | value | Y/N | “chunk” | (km s−1) | (km s−1) | Value | Error |
| FIES | ||||||||||
| (γ = +1.1 ± 4.5 m s−1)i | ||||||||||
| 7640.651587 | 0.0000 | 0.0049 | 3 600 | … | Y | 1 | … | … | … | … |
| 7641.696953 | 0.0026 | 0.0055 | 3 600 | … | Y | 1 | … | … | … | … |
| 7642.604136 | −0.0078 | 0.0064 | 3 600 | … | Y | 1 | … | … | … | … |
| 7643.653029 | 0.0097 | 0.0060 | 3 600 | … | Y | 1 | … | … | … | … |
| FIES2 (new CCD) | ||||||||||
| (γ = −4.2 ± 4.4 m s−1)i | ||||||||||
| 7682.486821 | 0.0000 | 0.0064 | 3 600 | … | Y | 2 | … | … | … | … |
| 7683.631236 | −0.0089 | 0.0067 | 3 600 | … | Y | 2 | … | … | … | … |
| 7684.494008 | −0.0034 | 0.0065 | 3 600 | … | Y | 2 | … | … | … | … |
| 7717.444472 | −0.0040 | 0.0093 | 3 600 | … | N | … | … | … | … | … |
| HARPS | ||||||||||
| (γ = −25903.7 ± 2.2 m s−1)i | ||||||||||
| 7682.680755 | −25.8996 | 0.0020 | 3 600 | 45.5 | Y | … | 0.055 | 6.30 | −4.675 | 0.017 |
| 7984.899412 | −25.8984 | 0.0027 | 3 600 | 34.3 | Y | 3 | 0.041 | 6.27 | −4.659 | 0.023 |
| 7985.874006 | −25.9063 | 0.0033 | 3 600 | 28.6 | Y | 3 | 0.049 | 6.26 | −4.621 | 0.024 |
| 7986.881922 | −25.9027 | 0.0024 | 3 600 | 37.0 | Y | 3/4 | 0.058 | 6.27 | −4.665 | 0.019 |
| 7987.861213 | −25.9036 | 0.0019 | 3 600 | 46.0 | Y | 4 | 0.050 | 6.27 | −4.655 | 0.014 |
| 7990.892233j | −25.9141 | 0.0055 | 3 600 | 19.3 | N | … | 0.049 | 6.31 | −4.632 | 0.044 |
| 7991.870060 | −25.9036 | 0.0030 | 3 600 | 30.6 | Y | 4 | 0.050 | 6.27 | −4.624 | 0.024 |
| 8003.765390 | −25.9052 | 0.0035 | 3 600 | 27.7 | Y | … | 0.033 | 6.28 | −4.752 | 0.025 |
| 8082.577859 | −25.9108 | 0.0025 | 3 600 | 35.3 | Y | … | 0.048 | 6.27 | −4.679 | 0.018 |
| HARPS-N | ||||||||||
| (γ = −25910.3 ± 1.8 m s−1)i | ||||||||||
| 7692.420875 | −25.9157 | 0.0024 | 2 700 | 34.5 | Y | 5 | 0.035 | 6.22 | −4.721 | 0.019 |
| 7693.429280 | −25.9071 | 0.0028 | 2 700 | 32.9 | Y | 5 | 0.036 | 6.23 | −4.676 | 0.020 |
| 7694.406191 | −25.9130 | 0.0026 | 2 700 | 32.6 | Y | 5 | 0.037 | 6.22 | −4.688 | 0.019 |
| 7694.559784 | −25.9216 | 0.0027 | 2 700 | 33.1 | Y | 5 | 0.039 | 6.23 | −4.693 | 0.021 |
| 7743.412714 | −25.9153 | 0.0046 | 3 300 | 22.8 | N | … | 0.032 | 6.25 | −4.632 | 0.035 |
| 8013.524085 | −25.9034 | 0.0019 | 3 600 | 44.7 | Y | 6 | 0.047 | 6.29 | −4.625 | 0.011 |
| 8013.705318 | −25.9013 | 0.0025 | 3 600 | 37.7 | Y | 6 | 0.046 | 6.29 | −4.618 | 0.014 |
| 8014.548213 | −25.9137 | 0.0034 | 3 600 | 29.1 | Y | 6 | 0.053 | 6.29 | −4.623 | 0.022 |
| 8046.512566 | −25.9070 | 0.0028 | 3 360 | 33.4 | N | … | 0.044 | 6.29 | −4.644 | 0.018 |
| 8054.600828j | −25.9118 | 0.0059 | 2 865 | 19.6 | N | … | 0.023 | 6.28 | −4.620 | 0.044 |
| 8080.406242 | −25.9122 | 0.0021 | 3 300 | 40.0 | Y | … | 0.037 | 6.26 | −4.681 | 0.014 |
| 8109.383188j | −25.9169 | 0.0058 | 3 360 | 19.5 | N | … | 0.028 | 6.25 | −4.681 | 0.050 |
| 8129.370822 | −25.9028 | 0.0037 | 3 360 | 27.4 | N | … | 0.043 | 6.28 | −4.634 | 0.026 |
Notes. (a) Time stamps are given in barycentric Julian day in barycentric dynamical time. (b) The FIES RV measurements are relative, while the HARPS and HARPS-N measurements are absolute. (c) S/N per pixel at 5500 Å. (d) Included RVs in the GP regression model. (e)The division of chunks in the FCO technique RV model. The model excluded the isolated RVs in the empty entries. (f) Bisector inverse slope of the CCF. (g)FWHM of the CCF. (h)A dimensionless ratio of the emission in the Ca II H and K line cores to that in two nearby continuum bandpasses on either side of the lines. (i) Relative (FIES) and absolute (HARPS and HARPS-N) systemic velocities derived from the Gaussian regression analysis. (j) Not used in the any of the RV models owing to S∕N < 20.
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