The Seven Sisters DANCe

Abstract

Context. The DANCe survey provides photometric and astrometric (position and proper motion) measurements for approximately 2 million unique sources in a region encompassing ∼80 deg 2 centered on the Pleiades cluster. Aims. We aim at deriving a complete census of the Pleiades and measure the mass and luminosity functions of the cluster. Methods. Using the probabilistic selection method previously described, we identified high probability members in the DANCe (i ≥ 14 mag) and Tycho-2 (V 12 mag) catalogues and studied the properties of the cluster over the corresponding luminosity range. Results. We find a total of 2109 high-probability members, of which 812 are new, making it the most extensive and complete census of the cluster to date. The luminosity and mass functions of the cluster are computed from the most massive members down to ∼0.025 M . The size, sensitivity, and quality of the sample result in the most precise luminosity and mass functions observed to date for a cluster. Conclusions. Our census supersedes previous studies of the Pleiades cluster populations, in terms of both sensitivity and accuracy.

A Search for L/T Transition Dwarfs with Pan-STARRS1 and WISE. III. Young L Dwarf Discoveries and Proper Motion Catalogs in Taurus and Scorpius–Centaurus

“…We chose objects in our search to the right of the dashed line (using an earlier, preliminary version of y P1 photometry); J−H was not used to select objects. Our discoveries have normal -y J Bouy et al (2015) measurement is more precise. The adopted proper motion is very similar to PSOJ077.1+24 and consistent with our mean Taurus proper motion.…”

“…We show their locations in the sky in Figure 2. PSOJ060.3+25 was previously identified by Sarro et al (2014) and Bouy et al (2015) as a likely very low-mass member of the Pleiades cluster, based on photometry and astrometry. PSOJ237.1471−23.1489 (hereinafter PSO J237.1 −23) was identified by Lodieu (2013) as a photometric and astrometric candidate member of Upper Sco.…”

Clusters: Age Scales for Stellar Physics

“…There is an extraordinary amount of works devoted to the Pleiades in the literature but, despite this fact, new cluster members have been uncovered (Sarro et al 2014;Bouy et al 2015). Figure 29, taken from Bouy et al (2015), displays the HRD for the Pleiades.…”

“…Figure 29, taken from Bouy et al (2015), displays the HRD for the Pleiades. The original caption says: "Hertzsprung-Russell diagram of the Pleiades (black dots) with the Allard (2014) (red), Bressan et al (2012) (light green) and Siess et al (2000) (light blue) models, as well as Praesepe's sequence as reported in Kraus & Hillenbrand (2007) (green)."…”

“…After all, science is itself a stairway were all steps, any contribution, even if they are very short, are very important. The figure has been taken from Bouy et al (2015).…”