Bochum Galactic Disk Survey (BGDS) DR2 light curves browser service

Metadata

Identifier

ivo://org.gavo.dc/bgds/l2/tsform

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Description

From the Bochum Galactic Disk Survey, time series have been obtained in the r and i bands on an (up to) nightly basis. Depending on the field, the time series contain up to more than 300 nights over 9 years. Each measurement in r and i represents the averaged flux over 10 minutes of observation (from 9 averaged 10s images). Additionally, intermittent measurements in Johnson UVB, Sloan z and the narrowbands OIII, NB, Halpha and SII have been recorded as well.

The Bochum Galactic Disk Survey is a project to monitor the stellar content of the Galactic disk in a 6 degree wide stripe centered on the Galactic plane. The data has been recorded from September 2010 to September 2019 in Sloan r and i simultaneously with the Robotic Bochum Twin Telescope (RoBoTT) at the Universitaetssternwarte Bochum near Cerro Armazones in the Chilean Atacama desert. It contains measurements of about 2x10^7 stars over nine years.

The source images are available from ivo://org.gavo.dc/bgds/q/sia.

Keywords

Creator

Blex, J.
Hackstein, M.
Westhues, C.
Ramolla, M.
Demleitner, M.
Fein, C.
Chini, R.

Created

2024-07-23T08:00:00Z

Data updated

2025-09-15T11:05:10Z

Metadata updated

2025-09-15T11:05:00Z

Rights

If you use GDS data, please cite 2015AN....336..590H.

Source

2015AN....336..590H

Reference URL

Service info

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Bochum Galactic Disk Survey (BGDS) DR2 light curves browser service

The source images are available from ivo://org.gavo.dc/bgds/q/sia.

If you use GDS data, please cite 2015AN....336..590H.

	accsize -- Size of the data in bytes
	dec -- ICRS declination for this object as mean of the positions obtained from the source extraction.
	embargo -- Date the data will become/became public
	field -- Survey field observed.
	gdr3_id -- Gaia DR3 source_id of this object.
	mag_errs -- Errors in mags
	mags -- An array containing the magnitudes for band_name and the times in mjd
	mime -- MIME type of the file served
	mjds -- An array containing the time values of the time series
	obs_id -- Main identifier of this observation (a single object may have multiple observations in different bands and fields)
	owner -- Owner of the data
	ra -- ICRS right ascension for this object as mean of the positions obtained from source extraction.
	ssa_aperture -- Angular diameter of aperture
	ssa_binSize -- Bin size in wavelength
	ssa_cdate -- Processing/Creation date
	ssa_collection -- A short handle naming the collection this spectrum belongs to.
	ssa_creationtype -- Process used to produce the data (archival, cutout, filtered, mosaic, projection, spectralExtraction, or catalogExtraction)
	ssa_creator -- Creator of the datasets included here.
	ssa_creatorDID -- Dataset identifier assigned by the creator
	ssa_cversion -- Creator assigned version for this dataset (will be incremented when this particular item is changed).
	ssa_datasource -- Method of generation for the data (one of survey, pointed, theory, custom, artificial).
	ssa_dateObs -- Midpoint of exposure (MJD)
	ssa_dstitle -- A compact and descriptive designation of the dataset.
	ssa_dstype -- Type of data (spectrum, time series, etc)
	ssa_fluxStatError -- Statistical error in flux
	ssa_fluxSysError -- Systematic error in flux
	ssa_fluxcalib -- Type of flux calibration (ABSOLUTE, CALIBRATED, RELATIVE, NORMALIZED, or UNCALIBRATED).
	ssa_instrument -- Instrument or code used to produce these datasets
	ssa_length -- Number of points in the spectrum
	ssa_location -- ICRS location of aperture center
	ssa_pdate -- Date last published.
	ssa_pubDID -- Dataset identifier assigned by the publisher
	ssa_publisher -- Publisher of the datasets included here.
	ssa_redshift -- Redshift of target object
	ssa_reference -- URL or bibcode of a publication describing this data.
	ssa_snr -- Signal-to-noise ratio estimated for this dataset
	ssa_speccalib -- Type of wavelength calibration
	ssa_specend -- Upper value of spectral coordinate
	ssa_specext -- Width of the spectrum
	ssa_specmid -- Midpoint of region covered in this dataset
	ssa_specres -- Resolution (in meters of wavelength) on the spectral axis
	ssa_specstart -- Lower value of spectral coordinate
	ssa_spectStatError -- Statistical error in wavelength
	ssa_spectSysError -- Systematic error in wavelength
	ssa_targclass -- Object class (star, QSO,...; use Simbad object classification http://simbad.u-strasbg.fr/simbad/sim-display?data=otypes if at all possible)
	ssa_targetpos -- Equatorial (ICRS) position of the target object.
	ssa_targname -- Common name of object observed.
	ssa_timeExt -- Exposure duration
	var -- 1 if the light curves was classified as variable. 0 otherwise.