109 new Galactic open clusters (Kharchenko+, 2005)

Details 109 new Galactic open clusters (Kharchenko+, 2005) 109 new Galactic open clusters (Kharchenko+, 2005)

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ycat..34400403k&link_type=abstract

VizieR On-line Data Catalog: J/A+A/440/403. Originally published in: 2005A&A...440..403K

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Clusters: Open, Radial Velocities, Proper Motions

Scientific paper

The 1st Extension of the COCD (Catalogue of Open Cluster Data, Cat. )), COCD-1 (file clusters.dat) is a result of studies of wide neighborhoods of 130 newly discovered open clusters in the homogeneous All-sky Compiled Catalogue of 2.5 Million Stars (ASCC-2.5, Cat. ), application of a technique of cluster member selection and cluster parameter determination used for the study of known clusters by Kharchenko et al. (2004, Cat. and 2005, Cat. ).
On the basis of data on about 6,200 possible members (including about 2,200 most probable ones) and homogeneous methods of cluster parameter determination the angular sizes of cluster cores and coronae, cluster heliocentric distances, colour-excesses, mean proper motions, and ages of 130 clusters and mean radial velocities of 69 clusters were established and collected in the COCD-1. Clusters in the catalogue are sorted by in right ascension J2000 order.
The 1st Extension of the CSOCA (Catalogue of Stars in the Galactic Open Cluster Areas) CSOCA-1 (file stars.dat) is the result of systematic search of new open clusters (Kharchenko et al., this paper) in the homogeneous All-sky Compiled Catalogue of 2.5 Million Stars (ASCC-2.5, Cat. ), and of application of a technique of cluster member selection used for the construction of the CSOCA by Kharchenko et al. (2004, Cat. ).
The CSOCA-1 is comprised of 130 sky areas with newly discovered clusters. Twenty one of them contain objects identified with clusters listed for the first time in the on-line release 2.0 of catalogue by Dias et al. (2002, Cat. ). Since no preliminary information on cluster properties is available (used in our search routine) on these objects in Dias et al. (2004, available at http://www.astro.iag.usp.br/~wilton ) we regard them as independently detected clusters. The areas represent quadratic fields centered at adopted cluster centers with side lengths of acl[deg]=2*(rcl+0.1), where rcl is the determined angular radius of the cluster. For clusters with rcl<0.4{deg}, acl=1{deg}. In every cluster area the CSOCA-1 contains the complete list of the ASCC-2.5 stars. The catalog includes accurate J2000 equatorial coordinates, proper motions in the Hipparcos system, BV photometric data in the Johnson system, proper motion, photometric and spatial membership probabilities, and angular distances from the cluster centers for all included stars. If available, trigonometric parallaxes, multiplicity and variability flags from the ASCC-2.5, spectral types (from the ASCC-2.5 or the Tycho-2 Spectral Type Catalog ), and radial velocities with their errors from the Catalogue of Radial Velocities of Galactic Stars with high precision Astrometric Data (CRVAD, ) are also given. Since some cluster areas overlap each other some stars are included in the CSOCA several times. The catalogue contains 26,778 entries for 26,386 stars. Entries are sorted in right ascension J2000 order.
The 1st Extension of the Open Cluster Diagrams Atlas (OCDA-1) (atlas/*) presents a set of open cluster diagrams used for the determination of parameters of 130 newly discovered open clusters, and is intended to illustrate the quality of the constructed cluster membership, and the accuracy of the derived cluster parameters (Kharchenko et al., this paper). Every diagram presents relation between various stellar data from all sky catalogue ASCC-2.5 (Kharchenko, 2001, Cat. ) in area of the specific cluster. There are five diagrams provided for every cluster in the Atlas: the area map, the density profile, the vector point diagram, the magnitude equation diagram, and the color-magnitude diagram. The OCDA-1 consists of 130 PostScript plots stored as gzipped files (i.e. one file per cluster).
(5 data files).

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