Table information for 'mwsc.main'


Table Description: A list of milky way stellar cluster candidates and objects, together with the notes and parameters from confirmed objects for the original publication.

This table is available for ADQL queries and through the TAP endpoint.

Resource Description: MWSC presents a list of 3006 Milky Way Stellar Clusters (MWSC), found in the 2MAst (2MASS with Astrometry) catalogue. The target list was compiled on the basis of present-day lists of open, globular and candidate clusters. For confirmed clusters we determined a homogeneous set of astrophysical parameters such as membership, angular radii of the main morphological parts, mean cluster proper motions, distances, reddenings, ages, tidal parameters, and sometimes radial velocities.

For a list of all services and tables belonging to this table's resource, see Information on resource 'Global Survey of Star Clusters in the Milky Way'

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference 2013A&A...558A..53K (ADS BibTeX entry for the publication) either in addition to or instead of the service reference.

To cite the table as such, we suggest the following BibTeX entry:

  title={Global Survey of Star Clusters in the Milky Way},
  author={Kharchenko, N.V. and Piskunov, A.E. and Roeser, S. and Schilbach, E. and Scholz, R.-D.},
  howpublished={{VO} resource provided by the {GAVO} Data Center}


Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
recno Id MWSC sequential number (cluster catalog number). N/A;meta.main
name Common Name NGC, IC or other common designation N/A
confirmation_flag Cluster? Is this object a stellar cluster? 'dupe' indicates the object coincides with another cluster. N/A N/A
object_type Source Classification Object type N/A src.class
ot_certain Type Certain? True if the object type is confirmed, false if object type has candidate status. N/A meta.code;src.class
source Source Source for MWSC list and input parameters N/A meta.ref
source_type Src type Object type from source [Note o] N/A src.class
n_star N Number of stars in MWSC sky area. N/A meta.number
raj2000 RA Adopted cluster centre in RA J2000.0 deg pos.eq.ra;meta.main
dej2000 Dec Adopted cluster centre in Dec J2000.0 deg pos.eq.dec;meta.main
glon l Galactic longitude deg pos.galactic.lon
glat b Galactic latitude deg
rcore R(core) Angular radius of the core deg phys.angSize;src
rcenter R(center) Angular radius of the central part deg phys.angSize;src
rcluster R(cluster) Angular radius of the cluster deg phys.angSize;src
pmra PM(RA) Average proper motion in RA*cos(DE) deg/yr;pos.eq.ra;stat.mean
pmde PM(Dec) Average proper motion in Declination deg/yr;pos.eq.dec;stat.mean
e_pm e_PM Error of proper motion deg/yr stat.error;;pos.eq.ra;stat.mean
rv RV Average radial velocity km/s spect.dopplerVeloc;pos.heliocentric;stat.mean
e_rv Err(RV) Error of RV km/s stat.error;spect.dopplerVeloc;pos.heliocentric;stat.mean
n_rv n_RV Number of stars used for RV km/s meta.number;spect.dopplerVeloc;pos.heliocentric;stat.mean
n1s_core |Core| Number of most probable (1sigma) members within R(core) N/A meta.number
n1s_center |Center| Number of most probable (1sigma) members within R(center); these are the stars used to compute the average proper motion. N/A meta.number
n1s_cluster |Cluster| Number of most probable (1sigma) members within R(cluster) N/A meta.number
dist D Distance from the Sun pc pos.distance;pos.heliocentric
col_ex_opt E(B-V) Colour excess in (B-V) mag phot.color.excess;phot.color;em.opt.B;em.opt.V
dist_mod Ks-M_Ks Apparent distance modulus in Ks mag phot.mag.distMod
col_ex_j E(J-Ks) Colour excess in (J-Ks) mag phot.color.excess;phot.color;;
col_ex_h E(J-H) Colour excess in (J-H) mag phot.color.excess;phot.color;;
delta_h ΔH Correction to H mag of fitted isochrone, empirically introduced to achieve a better fit in the Ks vs. J-H CMD. (see 2012A&A...543A.156K). mag phot.mag;arith.diff
logt log(T) Logarithm of average age log(yr) time.age;stat.mean
e_logt Err.(log(T)) Error in logarithm of average age log(yr) stat.error;time.age
nt N(T) Number of stars used for log(T) calculation N/A meta.number
rc R_King King core radius pc phys.size.radius
e_rc Err(R_King) Error of King core radius pc stat.error;phys.size.radius
rt R_Tidal King tidal radius pc phys.size.radius
e_rt Err(R_Tidal) Error of King tidal radius pc stat.error;phys.size.radius
kingk K King normalization factor (a measure of the central density of the cluster, see 2007A&A...468..151P pc**-2
e_kingk Err(K) Error of King normalization factor pc**-2 stat.error;
fe_h [Fe/H] Metallicity [Fe/H]; this is copied from 2013arXiv1309.4325C or 2012A&A...539A.125D. Data for globular clusters is taken from the revised Harris (1996) catalogue, edition 2010, or newly determined. N/A phys.abund.Fe
e_fe_h Err([Fe/H]) Error of Metallicity N/A stat.error;phys.abund.Fe
n_fe_h N([Fe/H]) Number of objects in [Fe/H] calculation. N/A meta.number
note_text Note The text of the note for an object. N/A meta.note

Columns that are parts of indices are marked like this.


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Note o

The values in the source_type column have the following meanings:

ass stellar association
ast Dias: possible asterism/dust hole/star cloud
dub Dias: dubious, objects considered doubtful by the DSS images inspection
emb embedded open cluster/cluster associated with nebulosity
glo globular cluster/possible globular cluster
irc infrared cluster
irg infrared stellar group
mog Dias: possible moving group
non Dias: "non-existent NGC"/ objects not found in DSS images inspection
rem Possible cluster remnant
var clusters with variable extinction