Table information for 'plc3.rawcands'

General

Table Description: A table of candidates for optical microlensing. gaia_source names are the lenses; names with ob_ in front are lensed objects.

This table is not available for ADQL queries and through the TAP endpoint.

Resource Description: From the Gaia eDR3 catalogue we predict astrometric microlensing events by foreground stars with high proper motion (μ > 100 mas/yr) passing a background source in the next decades. Using Gaia DR3 photometry we determine an approximate mass of the lens, which we use to calculate the expected microlensing effects. This yields 4842 microlensing events by 3791 different lenses between 2010 and 2066 with expected shifts larger than 0.1 mas between the lensed and unlensed positions of the source. The past events might be interested when analyzing the individual Gaia measurements). 685 of those are expected to happen within the next decade (2021-2031). For 140 events we also expect a magnification between 1 mmag and 0.6 mag.

For a list of all services and tables belonging to this table's resource, see Information on resource 'Astrometric Microlensing Events Predicted from Gaia eDR3'

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference Klüter et al, 2021, AJ submitted either in addition to or instead of the service reference.

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

@MISC{vo:plc3_rawcands,
  year=2020,
  title={Astrometric Microlensing Events Predicted from Gaia eDR3},
  author={Klüter, J. and Demleitner, M. and Proft, S.},
  url={https://dc.g-vo.org/tableinfo/plc3.rawcands},
  howpublished={{VO} resource provided by the {GAVO} Data Center}
}

Columns

Sorted alphabetically. [Sort by DB column index]

NameTable Head DescriptionUnitUCD
dec Dec (ICRS) Barycentric Declination in ICRS at epoch J2016.0 deg pos.eq.dec;meta.main
dec_error Err. Dec Standard error of dec mas stat.error;pos.eq.dec
ob_dec Dec (ICRS) dec value for the lensed object deg pos.eq.dec;meta.main
ob_dec_error Err. Dec dec_error value for the lensed object mas stat.error;pos.eq.dec
ob_parallax Parallax parallax value for the lensed object mas pos.parallax
ob_parallax_error Parallax_error parallax_error value for the lensed object mas stat.error;pos.parallax
ob_phot_bp_mean_mag Mag BP phot_bp_mean_mag value for the lensed object mag phot.mag;em.opt.B
ob_phot_g_mean_mag m_G phot_g_mean_mag value for the lensed object mag phot.mag;em.opt;stat.mean
ob_phot_rp_mean_mag Mag RP phot_rp_mean_mag value for the lensed object mag phot.mag;em.opt.R
ob_pmdec µ(Dec) pmdec value for the lensed object mas/yr pos.pm;pos.eq.dec
ob_pmdec_error Err. PM(Dec) pmdec_error value for the lensed object mas/yr stat.error;pos.pm;pos.eq.dec
ob_pmra µ(RA) pmra value for the lensed object mas/yr pos.pm;pos.eq.ra
ob_pmra_error Err. PM(RA) pmra_error value for the lensed object mas/yr stat.error;pos.pm;pos.eq.ra
ob_ra RA (ICRS) ra value for the lensed object deg pos.eq.ra;meta.main
ob_ra_error Err. RA ra_error value for the lensed object mas stat.error;pos.eq.ra
ob_source_id Source Id source_id value for the lensed object [Note id] N/A meta.id;meta.main
parallax Parallax Absolute barycentric stellar parallax of the source at the reference epoch J2016.0. If looking for a distance, consider joining with gedr3dist.main and using the distances from there. mas pos.parallax
parallax_error Parallax_error Standard error of parallax mas stat.error;pos.parallax
phot_bp_mean_mag Mag BP Mean magnitude in the integrated BP band. This is computed from the BP-band mean flux applying the magnitude zero-point in the Vega scale. To obtain error estimates, see phot_bp_mean_flux_over_error. mag phot.mag;em.opt.B
phot_g_mean_mag m_G Mean magnitude in the G band. This is computed from the G-band mean flux applying the magnitude zero-point in the Vega scale. To obtain error estimates, see phot_g_mean_flux_over_error. mag phot.mag;em.opt;stat.mean
phot_rp_mean_mag Mag RP Mean magnitude in the integrated RP band. This is computed from the RP-band mean flux applying the magnitude zero-point in the Vega scale. To obtain error estimates, see phot_rp_mean_flux_over_error. mag phot.mag;em.opt.R
pmdec µ(Dec) Proper motion in declination at J2016.0. mas/yr pos.pm;pos.eq.dec
pmdec_error Err. PM(Dec) Standard error of pmdec mas/yr stat.error;pos.pm;pos.eq.dec
pmra µ(RA) Proper motion in right ascension of the source in ICRS at J2016.0. This is the tangent plane projection (i.e., multiplied by cos(δ)) of the proper motion vector in the direction of increasing right ascension. mas/yr pos.pm;pos.eq.ra
pmra_error Err. PM(RA) Standard error of pmra mas/yr stat.error;pos.pm;pos.eq.ra
ra RA (ICRS) Barycentric Right Ascension in ICRS at epoch J2016.0 deg pos.eq.ra;meta.main
ra_error Err. RA Standard error of ra (with cos δ applied). mas stat.error;pos.eq.ra
roi Roi A polygon estimating the area swept over by this star within -5.5 to 50 years N/A N/A
source_id Source Id Gaia DR3 unique source identifier. Note that this *cannot* be matched against the DR1 or DR2 source_ids. [Note id] N/A meta.id;meta.main

Columns that are parts of indices are marked like this.

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