Table information for 'gcns.resolvedss'

General

Table Description:

Resolved binary candidates in the GCNS catalogue as discussed in https://doi.org/10.1051/0004-6361/202039498, “stellar multiplicity: resolved systems”. You probably want to join this table to gaia.edr3lite using source_id1 and/or source_id2.

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

Resource Description:

This is a clean and well characterised catalogue of objects within 100pc of the Sun from the Gaia early third data release. We characterise the catalogue using the full data release, and comparisons to other catalogues in literature and simulations. For all candidates (measured parallax < 8 mas), we calculate a distance probability function using Bayesian procedures and mock catalogues for the prediction of the priors. For each entry using a random forest classifier we attempt to remove sources with spurious astrometric solutions.

This results in 331312 objects that should contain at least 92% of stars within 100 pc at spectral type M9.

GCNS comes with several auxiliary tables, in particular lists of resolved stellar systems, of known neary stars not found in eDR3 and of candidates of Hyades and ComaBer cluster members.

For a list of all services and tables belonging to this table's resource, see Information on resource 'The Gaia eDR3 Catalogue of Nearby Stars GCNS'

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference https://doi.org/10.1051/0004-6361/202039498 either in addition to or instead of the service reference.

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

@MISC{vo:gcns_resolvedss,
  year=2021,
  title={eDR3 {GCNS} Resolved Binary Candidates},
  author={Smart, R.L. and Sarro, L.M. and Rybizki, J. and Reylé, C. and Robin, A.C. and Hambly, N.C. and Abbas, U. and Barstow, M.A. and de Bruijne, J.H.J. and Bucciarelli, B. and Carrasco, J.M. and Cooper, W.J. and Hodgkin, S.T. and Masana, E. and Michalik, D. and Sahlmann, J. and Sozzetti, A. and Gaia Collaboration},
  url={https://dc.zah.uni-heidelberg.de/tableinfo/gcns.resolvedss},
  howpublished={{VO} resource provided by the {GAVO} Data Center}
}

Columns

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
source_id1 Primary Id Gaia EDR3 source_id of the primary star N/A meta.id.part
source_id2 Secondary Id Gaia EDR3 source_id of secondary start N/A meta.id.part
separation Separation Angular separation of the two sources. arcsec pos.angDistance
mag_diff ΔG G magnitude difference between the two components mag arith.diff;phot.mag;em.opt.V
proj_sep Projected Sep. Projected separation of the pair AU phys.size
bin Bin? 1 if the system is probably made up of more than two stars, 0 otherwise. N/A meta.code.multip
bound Bound? 1 if the system is probably gravitationally bound, 0 otherwise N/A meta.code

Columns that are parts of indices are marked like this.

Other

The following services may use the data contained in this table:

VOResource

VO nerds may sometimes need VOResource XML for this table.