Archives of Photographic PLates for Astronomical USE

Coordinates, magnitudes, and time information (applause_dr2.lightcurve)

Description

This table contains calibrated magnitudes, sky coordinates and source designations from the source_calib table, and observation time from the exposure table. Each row in the table has a unique source_id, which is the same as in the source and source_calib tables. It's a convenience for constructing a lightcurve for a selected object. It does not provide periods etc. Unique Identifier source_id

Attribution

If you have made substantial use of the data provided by APPLAUSE DR2, 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 Nuernberg/Erlangen), the Hamburger Sternwarte (University of Hamburg) and Tartu Observatory.

Columns

Name Type UCD Unit Description
source_id long meta.id
meta.main
Source identification number
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
ut_start timestamp time.start
obs.exposure
Time[yyyy-mm-dd hh:mm:ss] UT date and time of the start of exposure
jd_start double time.start
obs.exposure
Julian date at the start of exposure
jd_mid double time.epoch
obs.exposure
Julian date at the mid-point of exposure
year_mid double time.epoch
obs.exposure
Decimal year of the mid-point of exposure
exptime float time.interval
obs.exposure
s Exposure time
raj2000 double pos.eq.ra deg Right ascension of the source (equinox J2000)
dej2000 double pos.eq.dec deg Declination of the source (equinox J2000)
tycho2_id char meta.id.cross Identification of the matched Tycho-2 catalogue object
ucac4_id char meta.id.cross Identification of the matched UCAC4 catalogue object
healpix256 int pos.healpix Source HEALPix number (nside=256, nested ordering)
natmag float phot.mag
em.opt
mag Calibrated magnitude of the source in the plate natural photometric system
natmagerr float stat.error
phot.mag
em.opt
mag Estimated error on the calibrated magnitude of the source in the plate natural photometric system
bmag float phot.mag
em.opt.B
mag Calibrated B magnitude of the source
bmagerr float stat.error
phot.mag
em.opt.B
mag Estimated error on the calibrated B magnitude of the source
vmag float phot.mag
em.opt.V
mag Calibrated V magnitude of the source
vmagerr float stat.error
phot.mag
em.opt.V
mag Estimated error on the calibrated V magnitude of the source
color_term float stat.fit.param Color term of the plate, characterizing color response of the emulsion and filter used
color_bv float phot.color
em.opt.B
em.opt.V
mag B-V color index of the source, based on the UCAC4 or Tycho-2 catalogue
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)
nn_dist float pos.distance arcsec Distance to the nearest neighbor among extracted sources
sextractor_flags short meta.code Flags given by SExtractor
pos spoint meta.number GIS index for (ra,dec)