VizieR Online Data Catalog: Milky Way global survey of star clusters (Kharchenko+, 2012)

An all-sky target list of 3784 entries with initial cluster parameters was compiled from sources available in the literature. As the primary source we used the data from the Catalogue of Open Cluster Data (COCD, Kharchenko et al. 2005a,b, Cat. J/A+A/438/1163, J/A+A/440/403). For further optical clusters the data were taken from the Dias et al. (2002, Cat. B/ocl) list (Version 3.1, 24/nov/2010). Known associations were retrieved from Melnik & Dambis (2009, Cat. J/MNRAS/400/518). For clusters detected in the NIR the information came from Bica et al. (2003b, Cat. J/A+A/404/223), Dutra et al. (2003, Cat. J/A+A/400/533), Froebrich et al. (2007, Cat. J/MNRAS/374/399). Globular clusters were selected from the catalogue by Harris (1996) (edition 2010, 2010arXiv1012.3224H). Additionally, we incorporated supplementary data on embedded clusters from Bica et al. (2003a, Cat. J/A+A/397/177), Lada & Lada (2003ARA&A..41...57L) and on stars in associations from Humphreys (1978, Cat. V/44).

The basic stellar data were taken from the all-sky catalogue 2MAst (2Mass with Astrometry), that was extracted from the all-sky catalogues PPMXL (Roeser et al. 2010, Cat. I/317) and 2MASS (Cutri et al. 2003, Cat. II/246). Additionally, we incorporated data on radial velocities from Kharchenko et al. (2007, Cat. III/254) and spectral types from ASCC-2.5 (Kharchenko & Roeser 2009, Cat. I/280).

Around each object from our target list we defined a circular area with a radius of ra=r2+radd where r2 is cluster radius, and radd=0.3°. In these areas we selected in 2MAst only those stars with flags Rflg (the 2nd triple of the flags in 2MASS) set to 1, 2, or 3 in each band, i.e. the stars with the best quality detections in photometric and astrometric data.

There are 871 targets in the 2nd Galaxy quadrant, we confirmed 650 open clusters and/or associations. These 650 sky areas contain about 11.2 mln 2MAst stars with best quality detections in photometric and astrometric data. We selected 30387 most probable members located in the central cluster regions and determined - with a homogeneous method/pipeline - angular sizes of the main morphological parts, heliocentric distances, colour-excesses, mean proper motions, sometimes radial velocities, ages, tidal parameters. There are 4 globular clusters in the 2nd quadrant, they are listed in index_q2.dat, but the data for globular clusters will be submitted to the CDS as a separate catalogue.

We present for the 2nd quadrant of the Milky Way:

* The Catalogue of the MWSC Data with: Catalogue of parameters for confirmed clusters; Index (full list) of MWSC objects; Notes (full object list with notes); Inside each list the entries are ordered by MWSC number (i.e. right ascension J2000 from the target list).

* The Catalogues of the MWSC Stars in 650 circular sky areas with classified clusters. Files are ordered by MWSC number order; inside each sky area the entries are ordered by Ks magnitudes.

* The Atlas of MWSC diagrams. In the Atlas the Cluster pages are ordered by MWSC number.

This catalog is superseded by Kharchenko et al., 2013, J/A+A/558/A53

(5 data files).