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

The table has 1834993024 rows, 27 columns.

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	char	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	char	meta.number	(radians,radians)	GIS index for (ra,dec)

Access

You can access this table using the query interface and download the results afterwards.

Digital object identifier

You can use the following DOI to cite this table in a publication:

https://doi.org/10.17876/plate/dr.2/009

License

This dataset is published under the CC0 1.0 Universal (CC0 1.0).