Extracted sources with calibrated positions and magnitudes (applause_dr4.source_calib)
The table has 4028101537 rows, 49 columns.
Description
Sources with calibrated magnitudes by pyplate. For calibration a crossmatch of UCAC4 and APASS was used. Catalog identifiers are given, together with match quality indicators, when a match in those cataclogs has been indentified. The magnitude calibration uses the values of the phot_* tables. Unique Identifier source_id
Attribution
If you have made substantial use of the data provided by APPLAUSE DR4, kindly include this acknowledgement
Funding for APPLAUSE has been provided by DFG (German Research Foundation, Grant), Leibniz Institute for Astrophysics Potsdam (AIP), Dr. Remeis Sternwarte Bamberg (University Nürnberg/Erlangen), the Hamburger Sternwarte (University of Hamburg) and Tartu Observatory. Plate material also has been made available from Thüringer Landessternwarte Tautenburg, and from the archives of the Vatican Observatory.
Columns
| Name | Type | UCD | Unit | Description |
|---|---|---|---|---|
| source_id | long |
meta.id meta.main |
Source identification number. The number is constructed as follows: 4 x 10^13 + process_id x 10^7 + source number in the image. |
|
| process_id | int | meta.id |
Process identification number |
|
| scan_id | int | meta.id |
Scan identification number |
|
| plate_id | int | meta.id |
Plate identification number |
|
| archive_id | int | meta.id |
Archive identification number |
|
| solution_num | short | meta.number |
Solution number within the process |
|
| annular_bin | short | meta.code |
Annular bin (1-9) where the source belongs (bin 1 is in the center, bin 9 is at the edge) |
|
| dist_center | double | pos.distance | px |
Distance of the source from plate center |
| dist_edge | double | pos.distance | px |
Distance of the source from plate edge |
| sextractor_flags | short | meta.code |
Flags given by SExtractor |
|
| model_prediction | float | stat.likelihood |
Classification of the source as celestial (value close to 1) or artifact (value close to 0). The value is a prediction by a machine-learning algorithm. |
|
| ra_icrs | double | pos.eq.ra |
Right ascension of the source (International Celestial Reference System) |
|
| dec_icrs | double | pos.eq.dec |
Declination of the source (International Celestial Reference System) |
|
| ra_error | float |
stat.error pos.eq.ra |
arcsec |
Error of the right ascension |
| dec_error | float |
stat.error pos.eq.dec |
arcsec |
Error of the declination |
| gal_lon | double | pos.galactic.lon |
Galactic longitude of the source |
|
| gal_lat | double | pos.galactic.lat |
Galactic latitude of the source |
|
| ecl_lon | double |
Ecliptic longitude of the source |
||
| ecl_lat | double |
Ecliptic latitude of the source |
||
| x_sphere | double | pos.cartesian.x |
Source x-coordinate on the unit sphere |
|
| y_sphere | double | pos.cartesian.y |
Source y-coordinate on the unit sphere |
|
| z_sphere | double | pos.cartesian.z |
Source z-coordinate on the unit sphere |
|
| healpix256 | int | pos.healpix |
Source HEALPix number (nside=256, nested ordering) |
|
| healpix1024 | int | pos.healpix |
Source HEALPix number (nside=1024, nested ordering) |
|
| nn_dist | float | pos.angDistance | arcsec |
Distance to the nearest neighbor among extracted sources |
| zenith_angle | float | pos.az.zd | deg |
Zenith angle of the source |
| airmass | float | obs.airMass |
Air mass (path length for light rays from a celestial source to pass through the atmosphere) |
|
| natmag | float |
phot.mag em.opt |
mag |
Calibrated magnitude of the source in the plate natural photometric system |
| natmag_error | float |
stat.error phot.mag em.opt |
Error estimate of the magnitude in the plate natural photometric system |
|
| bpmag | float |
Calibrated magnitude of the source in the Gaia EDR3 BP (blue) passband |
||
| bpmag_error | float |
Error estimate of the calibrated BP magnitude |
||
| rpmag | float |
Calibrated magnitude of the source in the Gaia EDR3 RP (red) passband |
||
| rpmag_error | float |
Error estimate of the calibrated RP magnitude |
||
| natmag_plate | float |
phot.mag em.opt |
mag |
Magnitude of the source in the plate natural photometric system, obtained through photometric calibration for the whole plate, without corrections |
| natmag_correction | float |
phot.mag em.opt arith.diff |
mag |
Correction applied to the source magnitude in the plate natural photometric system |
| natmag_residual | float |
phot.mag em.opt arith.diff |
mag |
Residual of the source magnitude in the plate natural photometric system after corrections, compared to the synthetic magnitude constructed from Gaia EDR3 photometry |
| phot_range_flags | short |
Photometric range flags: 0 - source natmag is in the range of calibration stars; 1 - source natmag is brighter than the brightest calibration star; 2 - source natmag is fainter than the estimated faint limit of the plate |
||
| phot_calib_flags | short | meta.code |
Flag for photometric calibration stars: 0 - source is not a calibration star; 1 - source is a valid calibration star; 2 - source was found to be an outlier of the photometric calibration curve |
|
| color_term | float | stat.fit.param |
Color term of the plate, characterizing color response of the emulsion and filter used. Color term 0 corresponds to the Gaia EDR3 RP passband, color term 1 corresponds to the BP passband. Values outside the 0...1 range are extrapolations. |
|
| cat_natmag | float |
phot.mag em.opt |
mag |
Magnitude of the source in the plate natural photometric system, RP+color_term×(BP-RP), based on the Gaia EDR3 catalogue |
| gaiaedr3_gmag | float |
Gaia EDR3 G-magnitude of the matched source |
||
| gaiaedr3_id | long |
Gaia EDR3 source_id of the matched source |
||
| gaiaedr3_bp_rp | float |
Gaia EDR3 BP-RP color index of the matched source |
||
| gaiaedr3_dist | float | arcsec |
Angular distance in the sky plane between the source and the matched Gaia EDR3 source |
|
| gaiaedr3_neighbors | int |
Number of Gaia EDR3 sources that are in the neighborhood of the source. The neighboring sources can be found in the source_xmatch table. |
||
| match_radius | float | pos.angDistance | arcsec |
Radius in the sky plane that was used to cross-match extracted sources with the Gaia EDR3 catalogue |
| timestamp_insert | char | time.creation | Time[yyyy-mm-dd hh:mm:ss] |
Timestamp of insert |
| timestamp_update | char | time.creation | Time[yyyy-mm-dd hh:mm:ss] |
Timestamp of last update |
| pos | char | meta.number | (radians,radians) |
GIS index for (ra,dec) |
You can access this table using the query interface and download the results afterwards.
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This dataset is published under the CC0 1.0 Universal (CC0 1.0).