Minimal queries that can be submitted to the Gaia archive in the Astronomical Data Query Language to retrieve the data necessary to reproduce the HR diagram in Fig. 5 as well as the Pleiades parallax histogram in Fig. 9.
|Query to reproduce Fig. 5. This results in a table of 1 004 207 rows (1 004 204 when including the zero-point uncertainty on G in the selection criteria) listing the Gaia source identifier and the values of MG and (G−Ks).|
|select gaia.source_id, gaia.phot_g_mean_mag+5*log10(gaia.parallax)-10 as g_mag_abs, gaia.phot_g_mean_mag-tmass.ks_m as g_min_ks from gaiadr1.tgas_source as gaia inner join gaiadr1.tmass_best_neighbour as xmatch on gaia.source_id = xmatch.source_id inner join gaiadr1.tmass_original_valid as tmass on tmass.tmass_oid = xmatch.tmass_oid where gaia.parallax/gaia.parallax_error >= 5 and ph_qual = 'AAA' and sqrt(power(2.5/log(10)*gaia.phot_g_mean_flux_error/gaia.phot_g_mean_flux,2)) <= 0.05 and sqrt(power(2.5/log(10)*gaia.phot_g_mean_flux_error/gaia.phot_g_mean_flux,2) + power(tmass.ks_msigcom,2)) <= 0.05|
|Query to carry out a simplistic selection of Pleiades cluster members and reproduce Fig. 9. This results in a table of 164 rows listing the Gaia source identifier and the Gaia parallax.|
|select gaia.source_id, gaia.parallax from gaiadr1.tgas_source as gaia where contains(point('ICRS',gaia.ra,gaia.dec),circle('ICRS',56.75,24.12,5)) = 1 and sqrt(power(gaia.pmra-20.5,2)+power(gaia.pmdec+45.5,2)) < 6.0|
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