Free Access

Fig. 5


Detectability of the reflected spectrum from Proxima b with SPHERE+ESPRESSO. The achievable SNR on the planetary cross-correlation function (CCF) is plotted as a function of exposure time. Four different planet-to-star contrasts from Turbet et al. (2016) are considered. From bottom to top: 4 × 10-8 (dry planet with CO2 atmosphere), 1 × 10-7 (synchronous Earth-like planet), 1.4 × 10-7 (Earth-like planet in 3:2 resonance), and 2 × 10-7 (Venus-like atmosphere with aerosols). The horizontal dashed line indicates SNR = 5.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.