Comment on "Stellar activity masquerading as planets in the habitable zone of the M dwarf Gliese 581"
arXiv:1503.01976 · doi:10.1126/science.1260796
Abstract
Robertson et al.(Reports, July 25 2014, p440-444)(1) claimed that activity-induced variability is responsible for the Doppler signal of the proposed planet candidate GJ 581d. We point out that their analysis using periodograms of residual data is incorrect, further promoting inadequate tools. Since the claim challenges the viability of the method to detect exo-Earths, we urge for more appropriate analyses (see appendix).
15 pages, 4 figures. Includes appendix with full re-analysis of the data
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Cited by in corpus (9)
- Radial-Velocity Fitting Challenge. II. First results of the analysis of the data set
- Stellar activity mimics a habitable-zone planet around Kapteyn's star
- Color difference makes a difference: four planet candidates around tau Ceti
- Radial Velocity Fitting Challenge. I. Simulating the data set including realistic stellar radial-velocity signals
- The Pan-Pacific Planet Search VI: Giant planets orbiting HD 86950 and HD 222076
- Response to Comment on "Stellar activity masquerading as planets in the habitable zone of the M dwarf Gliese 581"
- High-cadence spectroscopy of M-dwarfs - II. Searching for stellar pulsations with HARPS
- Gaussian processes for radial velocity modeling Better rotation periods and planetary parameters with the quasi-periodic kernel and constrained priors
- Photometric rotation periods for 107 M dwarfs from the APACHE survey