Extended Data Table 4 Spectral lines and atomic data used for the chemical abundances for the Gemini–GRACES spectra

From: A stellar stream remnant of a globular cluster below the metallicity floor

  1. Equivalent widths are in milliångströms. As these three stars have very similar stellar parameters, a single NLTE abundance correction estimate is shown per line from three sources (where NLTE = log(X/H)NLTE – log(X/H)LTE).
  2. When lines could not be measured in all three stars, they are noted as ‘n’, ‘w’ or ‘b’, which refer to ‘noisy’, ‘weak’ and ‘blended’.
  3. αNLTE correction estimates from the INSPECT database (http://www.inspect-stars.com) and/or MPIA database (http://nlte.mpia.de).
  4. bNLTE corrections from the private calculations of L.I.M.72. Only the Na i NLTE corrections show some star-to-star variations due to the differences in the line strengths (the average from the three stars is reported here).
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