V |
|---|
| Name | Schema Table | Database | Description | Type | Length | Unit | Default Value | Unified Content Descriptor |
|---|
| v_i |
hipparcos_new_reduction |
GAIADR1 |
V-I colour index |
float |
8 |
mag |
|
phot.color;em.opt.V;em.opt.I |
| va |
hipparcos_new_reduction |
GAIADR1 |
Reference to variability annex |
int |
4 |
|
|
meta.note |
| var |
hipparcos_new_reduction |
GAIADR1 |
Cosmic dispersion added (stochastc solution) |
float |
8 |
|
|
stat.fit.residual |
| var |
iras_psc |
IRAS |
percent Likelihood of Variability |
smallint |
2 |
|
|
CODE_VARIAB |
| VAR_EXP_ID |
twoxmm, twoxmm_v1_2, twoxmmi_dr3_v1_0 |
XMM |
If the source is detected as variable (that is, if VAR_FLAG is set to True), the exposure ID ('S' or 'U' followed by a three-digit number) of the exposure with the smallest Chi² probability is given here. |
varchar |
4 |
|
|
|
| VAR_EXP_ID |
xmm3dr4 |
XMM |
If the source is detected as variable (that is, if VAR_FLAG is set to True), the exposure ID ('S' or 'U' followed by a three-digit number) of the exposure with the smallest Chi² probability is given here. |
varchar |
50 |
|
|
|
| VAR_FLAG |
twoxmm, twoxmm_v1_2, twoxmmi_dr3_v1_0 |
XMM |
The flag is set to True if this source was detected as variable (Chi² probability < 1E-5, see PN_CHI2PROB, M1_CHI2PROB, M2_CHI2PROB) in at least one exposure. |
varchar |
5 |
|
|
|
| VAR_FLAG |
xmm3dr4 |
XMM |
The flag is set to 1 if this source was detected as variable (Chi² probability < 1E-5, see PN_CHI2PROB, M1_CHI2PROB, M2_CHI2PROB) in at least one exposure. |
bit |
1 |
|
|
|
| var_flg |
allwise_sc2 |
WISE |
Variability flag. The variability flag is a four-character string, one character per band, in which the value for each band is related to the probability that the source flux measured on the individual WISE exposures was not constant with time. The probability calculation uses the standard deviation of the single exposure flux measurements, w?sigp1, as well as the band-to-band flux correlation significance, q12,q23,q34. CAUTION: Estimation of flux variability is unreliable for sources that are extended (ext_flg>0), and sources whose measurements are contaminated by image artifacts in a band (cc_flags[b] != '0'). |
varchar |
4 |
|
|
|
| The probability is computed for a band only when there are at least six single-exposure measurements available that satisfy minimum quality criteria. A value of "n" in a band indicates insufficient or inadequate data to make a determination of possible variability. Values of "0" through "9" indicate increasing probabilities of variation. Values of "0" through "5" are most likely not variables. Sources with values of "6" and "7" are likely flux variables, but are the most susceptible to false-positive variability. Var_flg values greater than "7" have the highest probability of being true flux variables in a band. |
| VAR_INST_ID |
twoxmm, twoxmm_v1_2, twoxmmi_dr3_v1_0 |
XMM |
If the source is detected as variable (that is, if VAR_FLAG is set to True), the instrument ID (PN, M1, M2) of the exposure given in VAR_EXP_ID is listed here. |
varchar |
2 |
|
|
|
| VAR_INST_ID |
xmm3dr4 |
XMM |
If the source is detected as variable (that is, if VAR_FLAG is set to True), the instrument ID (PN, M1, M2) of the exposure given in VAR_EXP_ID is listed here. |
varchar |
50 |
|
|
|
| variabilityTable |
Programme |
WSA |
Table name of merged variable sources |
varchar |
64 |
|
|
?? |
| variabilityTable |
Programme |
WSACalib |
Table name of merged variable sources |
varchar |
64 |
|
|
?? |
| variabilityTable |
Programme |
WSATransit |
Table name of merged variable sources |
varchar |
64 |
|
|
?? |
| variabilityTable |
Programme |
WSAUHS |
Table name of merged variable sources |
varchar |
64 |
|
|
?? |
| variableClass |
calVariability |
WSACalib |
Classification of objects across all bands. |
int |
4 |
|
-99999999 |
|
| This gives an overall classification. Currently the weighted intrinsicRMS/expectedRMS (wsrms) is calculated across all bands, where the weighting is directly proportional to the number of good observations in each band, where any bands with <5 observations have w=0 and the band with the most observations has a weighting of 1. If wsrms>3, then variableClass=1 (i.e. the source is variable), else variableClass=0. In the future, the classification will take into account other statistics, such as correlations between bands and will also include motion and skew, and will not be limited to 0 or 1. |
| variableClass |
dxsVariability, udsVariability |
WSA |
Classification of objects across all bands. |
int |
4 |
|
-99999999 |
|
| This gives an overall classification. Currently the weighted intrinsicRMS/expectedRMS (wsrms) is calculated across all bands, where the weighting is directly proportional to the number of good observations in each band, where any bands with <5 observations have w=0 and the band with the most observations has a weighting of 1. If wsrms>3, then variableClass=1 (i.e. the source is variable), else variableClass=0. In the future, the classification will take into account other statistics, such as correlations between bands and will also include motion and skew, and will not be limited to 0 or 1. |
| vc |
twomass_sixx2_xsc |
2MASS |
visual verification score for source |
smallint |
2 |
|
|
|
| vc |
twomass_xsc |
2MASS |
visual verification score for source. |
smallint |
2 |
|
|
CODE_MISC |
| vegaToAB |
Filter |
WSA |
The constant to convert Vega magnitudes to AB magnitudes. |
real |
4 |
mag |
-0.9999995e9 |
|
| vegaToAB |
Filter |
WSACalib |
The constant to convert Vega magnitudes to AB magnitudes. |
real |
4 |
mag |
-0.9999995e9 |
|
| vegaToAB |
Filter |
WSATransit |
The constant to convert Vega magnitudes to AB magnitudes. |
real |
4 |
mag |
-0.9999995e9 |
|
| vegaToAB |
Filter |
WSAUHS |
The constant to convert Vega magnitudes to AB magnitudes. |
real |
4 |
mag |
-0.9999995e9 |
|
| versionNum |
Multiframe |
WSA |
a version number for this frame (if available) |
real |
4 |
|
-0.9999995e9 |
meta.id |
| For deep stacks and mosaics produced in Edinburgh, (frameType=deep%stack, fileName=eYYYYMMDD_%) this refers to the database release number. For all other files, the versNum refers to the CASU pipeline version number. |
| versionNum |
Multiframe |
WSACalib |
a version number for this frame (if available) |
real |
4 |
|
-0.9999995e9 |
meta.id |
| For deep stacks and mosaics produced in Edinburgh, (frameType=deep%stack, fileName=eYYYYMMDD_%) this refers to the database release number. For all other files, the versNum refers to the CASU pipeline version number. |
| versionNum |
Multiframe |
WSATransit |
a version number for this frame (if available) |
real |
4 |
|
-0.9999995e9 |
meta.id |
| For deep stacks and mosaics produced in Edinburgh, (frameType=deep%stack, fileName=eYYYYMMDD_%) this refers to the database release number. For all other files, the versNum refers to the CASU pipeline version number. |
| versionNum |
Multiframe |
WSAUHS |
a version number for this frame (if available) |
real |
4 |
|
-0.9999995e9 |
meta.id |
| For deep stacks and mosaics produced in Edinburgh, (frameType=deep%stack, fileName=eYYYYMMDD_%) this refers to the database release number. For all other files, the versNum refers to the CASU pipeline version number. |
| versNum |
AstrCalVers |
WSACalib |
Version number of current astrometric solution |
int |
4 |
|
|
meta.software |
| versNum |
AstrCalVers |
WSATransit |
Version number of current astrometric solution |
int |
4 |
|
|
meta.software |
| versNum |
AstrCalVers |
WSAUHS |
Version number of current astrometric solution |
int |
4 |
|
|
meta.software |
| versNum |
AstrCalVers, PreviousAstrometry |
WSA |
Version number of current astrometric solution |
int |
4 |
|
|
meta.software |
| versNum |
PhotCalVers |
WSACalib |
the version number of the calibration |
int |
4 |
|
|
meta.software |
| versNum |
PhotCalVers |
WSATransit |
the version number of the calibration |
int |
4 |
|
|
meta.software |
| versNum |
PhotCalVers |
WSAUHS |
the version number of the calibration |
int |
4 |
|
|
meta.software |
| versNum |
PhotCalVers, PreviousMFDZP |
WSA |
the version number of the calibration |
int |
4 |
|
|
meta.software |
| vFlag |
rosat_bsc, rosat_fsc |
ROSAT |
variability flag |
varchar |
1 |
|
|
CODE_MISC |
| vigF |
rosat_fsc |
ROSAT |
vignetting factor |
float |
8 |
|
|
INST_CORR-FACTOR |
| vigf |
rosat_bsc |
ROSAT |
vignetting factor |
float |
8 |
|
|
INST_CORR-FACTOR |
| vMag |
ukirtFSstars |
WSA |
V band total magnitude |
real |
4 |
mag |
-0.9999995e9 |
PHOT_INT-MAG |
| vMag |
ukirtFSstars |
WSACalib |
V band total magnitude |
real |
4 |
mag |
-0.9999995e9 |
PHOT_INT-MAG |
| vMag |
ukirtFSstars |
WSAUHS |
V band total magnitude |
real |
4 |
mag |
-0.9999995e9 |
PHOT_INT-MAG |
| vr_m_opt |
twomass_psc |
2MASS |
Visual or red magnitude of the associated optical source. |
real |
4 |
mag |
|
SPECT_FLUX_VALUE |
| vt_mag |
tycho2 |
GAIADR1 |
Tycho2 VT magnitude |
real |
4 |
mag |
|
phot.mag;em.opt.V |
