Extended Data Fig. 2: No binarity signature detected in the NGC2808 vEHB-1 variable. | Nature Astronomy

Extended Data Fig. 2: No binarity signature detected in the NGC2808 vEHB-1 variable.

From: A plague of magnetic spots among the hot stars of globular clusters

Extended Data Fig. 2

Upper panel displays the phased Hα radial velocity curve of a comparison RR Lyrae star proving a successful detection of velocity variations in the data-set. The lower panel displays the velocity curve of our photometric variable vEHB-1 present in the same data-set. The error bars display the 1-σ error (~3.5 km/s) estimated at the vEHB-1 luminosity. No substantial velocity variations for vEHB-1 are observed. For clarity, the NGC2808 average radial velocity has been subtracted.

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