PLEIADES ASTROMETRY ARCSECOND SCALE PC
We note the presence of a stream around the Pleiades cluster extending up to 40 pc from the cluster centre.įull Tables A.1, B.1, and C.1 are only available at the CDS via anonymous ftp to ( 130.79.128.5) or via The photometric sequences derived in several colour–magnitude diagrams represent benchmark cluster sequences at ages from 90 to 600 Myr. We produce complete 5D maps of stellar and substellar bona fide members in these three regions. We identify a list of members in the α Per, Pleiades, and Praesepe clusters from the most massive stars all the way down to the hydrogen-burning limit with a higher confidence and better astrometry than previous studies. We provide updated distances and kinematics for the three clusters. We compute the positions in space of all member candidates in the three regions to investigate their distribution in space.Ĭonclusions. We derive the luminosity and mass functions of the three clusters and compare them to the field mass function. We infer updated ages from the white dwarf members of the Pleiades and Praesepe.
PLEIADES ASTROMETRY ARCSECOND SCALE UPDATE
We update the main physical properties of the clusters, including mean distance and velocity, as well as core, half-mass, and tidal radii. We cross-matched our final samples with catalogues from previous surveys to address the level of completeness. We identified 517, 1248, and 721 bona fide astrometric member candidates inside the tidal radius of α Per, the Pleiades, and Praesepe, respectively. We cross-correlated the Gaia catalogue with large-scale public surveys to complement the astrometry of Gaia with multi-band photometry from the optical to the mid-infrared. We implemented the kinematic method combined with the statistical treatment of parallaxes and proper motions to identify astrometric member candidates of three of the most nearby and best studied open clusters in the sky. Our scientific goal is to provide revised membership lists of the α Per, Pleiades, and Praesepe clusters exploiting the second data release of Gaia and produce five-dimensional maps ( α, δ, π, μ α cos δ, μ δ) of these clusters. Istituto Nazionale di Astrofisica, Osservatorio Astrofisico di Torino, Strada Osservatorio 20, 10025 Pino Torinese, ItalyĪims. Física Aplicada, Universidad Politécnica de Cartagena, 30202 Cartagena, Murcia, Spain Instituto de Astrofísica de Canarias (IAC), Calle Vía Láctea s/n, 38200 La Laguna, Tenerife, SpainĮ-mail: de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spainĭpto. Astronomical objects: linking to databases.Including author names using non-Roman alphabets.Suggested resources for more tips on language editing in the sciences Punctuation and style concerns regarding equations, figures, tables, and footnotes
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