Table information for 'bgds.phot_r'

General

Table Description: BGDS mean broadband photometry and lightcurves measurements in the SDSS r band. All BGDS broadband mean photometry is available in phot_all.

This table is not available for ADQL queries and through the TAP endpoint.

Resource 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 more than 7 years. Each measurement represents the averaged flux over 10 minutes of observation (from 9 averaged 10s images).

The Bochum Galactic Disk Survey is an ongoing 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 since mid-2010 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 more than seven years. Additionally, intermittent measurements in Johnson UVB and Sloan z have been recorded as well.

For a list of all services and tables belonging to this table's resource, see Information on resource 'BGDS time series'

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference 2015AN....336..590H (ADS BibTeX entry for the publication) either in addition to or instead of the service reference.

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:bgds_phot_r,
  year=2018,
  title={{BGDS} time series},
  author={Hackstein, M. and Haas, M. and Fein, C. and Chini, R.},
  url={http://dc.zah.uni-heidelberg.de/tableinfo/bgds.phot_r},
  howpublished={{VO} resource provided by the {GAVO} Data Center}
}

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

Columns

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
obs_id Obs_id Main identifier of this observation (a single object may have multiple observations in different bands and fields) N/A meta.id;meta.main
ra Ra ICRS right ascension for this object. N/A pos.eq.ra;meta.main
dec Dec ICRS declination for this object. N/A pos.eq.dec;meta.main
mean_mag 〈mag〉 Mean magnitude in the \filter band. mag phot.mag;stat.mean
err_mag Err〈mag〉 Error in mean magnitude in this band mag stat.error;phot.mag
amp Amplitude Difference between brightest and weakest observation. mag phot.mag;arith.diff
flux 〈flux〉 Mean flux in this band; this is computed from the mean magnitude based on Landolt standard stars. mJy phot.flux;stat.mean
err_flux Err〈flux〉 Error in mean flux in this band mJy stat.error;phot.flux
nobs #Obs Number of observations in this light curve N/A meta.number;obs
ssa_location Ssa_location The observed position as an ADQL POINT N/A N/A
mjds T[] An array containing the epochs of the time series d time.epoch
mags mag[] An array containing the values of the time series. mag phot.mag
mag_errs Err(mag)[] An array containing the errors of mags. mag stat.error;phot.mag
variable Var? 1 if the object is classified as variable by the BGDS pipeline N/A meta.code;src.var
time_min 1. Obs First timestamp in time series (MJD Topocentric UTC) d time.epoch;stat.min
time_max Last Obs Last timestamp in time series (MJD Topocentric UTC) d time.epoch;stat.max
time_mean <Obs> Mean epoch of observation d time.epoch;stat.mean
length #Meas Number of good measurements N/A N/A
field Field Survey field observed. N/A meta.id;obs.field

Columns that are parts of indices are marked like this.

Other

The following services may use the data contained in this table:

VOResource

VO nerds may sometimes need VOResource XML for this table.