Extended Data Table 1 Log of observations of Barnard’s star

From: A candidate super-Earth planet orbiting near the snow line of Barnard’s star

  1. In the case of ESO/HARPS, the ‘pre’ and ‘post’ tags indicate data obtained before and after a hardware upgrade in June 2015. A secular acceleration term of 4.497 m s−1 yr−1 due to change in perspective over time4 was removed from all datasets when applying the barycentric correction to the raw Doppler measurements. The final column lists the Principal Investigators of the proposals that obtained the relevant measurements.
  2. †H7aH, K01H, N02H, N03H, N05H, N06H, N10H, N12H, N14H, N15H, N19H, N20H, N22H, N24H, N28H, N31H, N50H, N59H, U01H, U05H, U07H, U08H, U10H, U11H, U12H, U66H, H38bH, A264Hr, A285Hr, A288Hr, C110Hr, C168Hr, C169Hr, C199Hr, C202Hr, C205Hr, C232Hr, C240Hr, C275Hr, C332Hr, H174Hr, H218Hr, H238Hr, H244Hr, H257Hr, H305Hr, N007Hr, N014Hr, N023Hr, N024Hr, N054Hr, N085Hr, N086Hr, N095Hr, N108Hr, N118Hr, N125Hr, N129Hr, N131Hr, N134Hr, N136Hr, N141Hr, N145Hr, N148Hr, N157Hr, N168Hr, U009Hr, U014Hr, U023Hr, U026Hr, U027Hr, U030Hr, U052Hr, U058Hr, U064Hr, U077Hr, U078Hr, U082Hr, U084Hr, U115Hr, U131Hr, U142Hr, Y013Hr, Y065Hr, Y292Hr.
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