Table 1.
Gravitational redshift measurement.
| Star | Doppler shift | Δv | Zucker | Ave | RV(astro) | Rotation | GR | Reid GR | M/R |
|---|---|---|---|---|---|---|---|---|---|
| HZ4 | 82.64 | 0.7 | 79.4 | 81.0 | 36.29 | −0.27 | 44.4 | 41.6 | 69.76 |
| HZ7 | 75.07 | 1.0 | 73.3 | 74.2 | 40.39 | 0.06 | 33.9 | 33.5 | 53.26 |
| LAWD19 | 74.52 | 0.2 | 75.4 | 75.0 | 39.55 | 0.01 | 35.5 | 35.4 | 55.77 |
| LAWD18 | 73.87 | 0.8 | 75.0 | 74.4 | 39.15 | −0.03 | 35.2 | 35.7 | 55.30 |
| EGGR29 | 90.16 | 1.0 | 93.1 | 91.6 | 37.54 | −0.15 | 53.9 | 52.3 | 84.68 |
| HG7-85 | 87.81 | 2.0 | 86.3 | 87.0 | 37.07 | −0.20 | 49.7 | 78.08 |
Notes. Column 1: star id; Col. 2: measured Doppler shift from UVES spectra, averaged between two observations; Col. 3: half difference between the two UVES observations; Col. 4: Doppler shift as measured by Zuckerman et al. (2013) from Keck spectra; Col. 5: UVES and Zuckerman et al. (2013) average Doppler shifts; Col. 6: astrometric radial velocities; Col. 7: correction for cluster rotation; Col. 8: GR (from Cols. 5, 6 and 7); Col. 9: GR from Reid (1996) Keck spectra; Col. 10: M/R from our GR estimate. All columns are expressed in km s−1.
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