Information on Service 'Bochum Galactic Disk Survey (BGDS) DR2 light curves browser service'
![[Use this service from your browser]](/static/img/usesvcbutton.png)
Further access options are discussed below
For a list of all services and tables belonging to this service's
resource, see Information on resource 'BGDS DR2 time series'
Service Documentation
The time series from BGDS DR2 by default come as IVOA Spectral Data Model
compliant VOTables. If you what plain text instead, add
&format=txt to the dlget URIs. The columns you get back then
are epoch in MJD, magnitude and magnitude error in mag, and a link to
a cutout showing where the measurement came from.
Overview
You can access this service using:
-
form --
an interface for web browsers through an HTML form
Coverage
1.10912 4.1325 eV
2010.69 2019.73
This resource is not (directly) published.
This can mean that it was deemed too unimportant, for internal
use only, or is just a helper for a published service.
Equally likely, however,
it is under development, abandoned in development or otherwise
unfinished. Exercise some caution.
Other services provided on the underlying data
include:
Default Output Fields
The following fields are contained in the output by default. More
fields may be available for selection; these would be given below
in the VOTable output fields.
| Name | Table Head |
Description | Unit | UCD |
|---|
| accref |
Product key |
Access key for the data
|
N/A |
meta.ref.url;meta.dataset |
| amp |
Amplitude |
Difference between brightest and weakest observation.
|
mag |
phot.mag;em.opt.U;arith.diff |
| location_dec |
Dec |
N/A
|
deg |
pos.eq.dec;meta.main |
| location_ra |
RA |
N/A
|
deg |
pos.eq.ra;meta.main |
| med_mag |
〈mag〉 |
Median magnitude in the band given by filter
|
mag |
phot.mag |
| ssa_bandpass |
Bandpass |
Bandpass (i.e., rough spectral location) of this dataset; this should be the most appropriate term from the vocabulary http://www.ivoa.net/rdf/messenger.
|
N/A |
instr.bandpass |
| time_max |
Last Obs |
Last timestamp in time series (MJD Topocentric UTC)
|
d |
time.epoch;stat.max |
| time_min |
1st Obs |
First timestamp in time series (MJD Topocentric UTC)
|
d |
time.epoch;stat.min |
VOTable Output Fields
The following fields are available in VOTable output. The verbosity
level is a number intended to represent the relative importance
of the field on a scale of 1 to 30. The services take a VERB argument.
A field is included in the output if their verbosity level is
less or equal VERB*10.
| Name | Table Head |
Description | Unit | UCD |
Verb. Level |
|---|
| accref |
Product key |
Access key for the data
|
N/A |
meta.ref.url;meta.dataset |
1 |
| 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 |
1 |
| time_min |
1st Obs |
First timestamp in time series (MJD Topocentric UTC)
|
d |
time.epoch;stat.min |
1 |
| time_max |
Last Obs |
Last timestamp in time series (MJD Topocentric UTC)
|
d |
time.epoch;stat.max |
1 |
| ra |
Ra |
ICRS right ascension for this object.
|
N/A |
pos.eq.ra;meta.main |
1 |
| dec |
Dec |
ICRS declination for this object.
|
N/A |
pos.eq.dec;meta.main |
1 |
| ssa_location |
Location |
ICRS location of aperture center
|
deg |
pos.eq |
5 |
| ssa_dateObs |
Date Obs. |
Midpoint of exposure (MJD)
|
d |
time.epoch |
5 |
| ssa_timeExt |
Exp. Time |
Exposure duration
|
s |
time.duration |
5 |
| ssa_length |
Length |
Number of points in the spectrum
|
N/A |
N/A |
5 |
| med_mag |
〈mag〉 |
Median magnitude in the band given by filter
|
mag |
phot.mag |
5 |
| accsize |
File size |
Size of the data in bytes
|
byte |
N/A |
11 |
| ssa_dstitle |
Title |
A compact and descriptive designation of the dataset.
|
N/A |
meta.title;meta.dataset |
15 |
| ssa_creatorDID |
C. DID |
Dataset identifier assigned by the creator
|
N/A |
meta.id |
15 |
| ssa_pubDID |
P. DID |
Dataset identifier assigned by the publisher
|
N/A |
meta.ref.ivoid |
15 |
| ssa_cdate |
Proc. Date |
Processing/Creation date
|
N/A |
time;meta.dataset |
15 |
| ssa_pdate |
Pub. Date |
Date last published.
|
N/A |
N/A |
15 |
| ssa_bandpass |
Bandpass |
Bandpass (i.e., rough spectral location) of this dataset; this should be the most appropriate term from the vocabulary http://www.ivoa.net/rdf/messenger.
|
N/A |
instr.bandpass |
15 |
| ssa_cversion |
C. Version |
Creator assigned version for this dataset (will be incremented when this particular item is changed).
|
N/A |
meta.version;meta.dataset |
15 |
| ssa_targname |
Object |
Common name of object observed.
|
N/A |
meta.id;src |
15 |
| ssa_targclass |
Ob. cls |
Object class (star, QSO,...; use Simbad object classification http://simbad.u-strasbg.fr/simbad/sim-display?data=otypes if at all possible)
|
N/A |
src.class |
15 |
| ssa_redshift |
z |
Redshift of target object
|
N/A |
src.redshift |
15 |
| ssa_targetpos |
Obj. pos |
Equatorial (ICRS) position of the target object.
|
N/A |
pos.eq;src |
15 |
| ssa_snr |
SNR |
Signal-to-noise ratio estimated for this dataset
|
N/A |
stat.snr |
15 |
| ssa_aperture |
Aperture |
Angular diameter of aperture
|
deg |
phys.angSize;instr.fov |
15 |
| ssa_specmid |
Mid. Band |
Midpoint of region covered in this dataset
|
m |
instr.bandpass |
15 |
| ssa_specext |
Bandwidth |
Width of the spectrum
|
m |
instr.bandwidth |
15 |
| ssa_specstart |
Band start |
Lower value of spectral coordinate
|
m |
em.wl;stat.min |
15 |
| ssa_specend |
Band end |
Upper value of spectral coordinate
|
m |
em.wl;stat.max |
15 |
| ssa_dstype |
Data type |
Type of data (spectrum, time series, etc)
|
N/A |
N/A |
15 |
| ssa_publisher |
Publisher |
Publisher of the datasets included here.
|
N/A |
meta.curation |
15 |
| ssa_creator |
Creator |
Creator of the datasets included here.
|
N/A |
N/A |
15 |
| ssa_collection |
Collection |
A short handle naming the collection this spectrum belongs to.
|
N/A |
N/A |
15 |
| ssa_instrument |
Instrument |
Instrument or code used to produce these datasets
|
N/A |
meta.id;instr |
15 |
| ssa_datasource |
Src |
Method of generation for the data (one of survey, pointed, theory, custom, artificial).
|
N/A |
N/A |
15 |
| ssa_creationtype |
Using |
Process used to produce the data (archival, cutout, filtered, mosaic, projection, spectralExtraction, or catalogExtraction)
|
N/A |
N/A |
15 |
| ssa_reference |
Ref. |
URL or bibcode of a publication describing this data.
|
N/A |
meta.bib.bibcode |
15 |
| ssa_fluxStatError |
Err. flux |
Statistical error in flux
|
s**-1 |
stat.error;phot.flux.density;em |
15 |
| ssa_fluxSysError |
Sys. Err flux |
Systematic error in flux
|
s**-1 |
stat.error.sys;phot.flux.density;em |
15 |
| ssa_fluxcalib |
Calib Flux |
Type of flux calibration (ABSOLUTE, CALIBRATED, RELATIVE, NORMALIZED, or UNCALIBRATED).
|
N/A |
N/A |
15 |
| ssa_binSize |
Spect. Bin |
Bin size in wavelength
|
m |
em.wl;spect.binSize |
15 |
| ssa_spectStatError |
Err. Spect |
Statistical error in wavelength
|
m |
stat.error;em |
15 |
| ssa_spectSysError |
Sys. Err. Spect |
Systematic error in wavelength
|
m |
stat.error.sys;em |
15 |
| ssa_speccalib |
Calib. Spect. |
Type of wavelength calibration
|
N/A |
meta.code.qual |
15 |
| ssa_specres |
Spec. Res. |
Resolution (in meters of wavelength) on the spectral axis
|
m |
spect.resolution;em.wl |
15 |
| amp |
Amplitude |
Difference between brightest and weakest observation.
|
mag |
phot.mag;em.opt.U;arith.diff |
15 |
| field |
Field |
Survey field observed.
|
N/A |
meta.id;obs.field |
15 |
| mime |
Type |
MIME type of the file served
|
N/A |
meta.code.mime |
20 |
| mjds |
T[] |
An array containing the time values of the time series
|
d |
time.epoch |
20 |
| mags |
mag[] |
An array containing the magnitude for the times in mjd
|
mag |
phot.mag |
20 |
| owner |
Owner |
Owner of the data
|
N/A |
N/A |
25 |
| embargo |
Embargo ends |
Date the data will become/became public
|
yr |
N/A |
25 |
Copyright, License, Acknowledgements
If you use GDS data, please cite
2015AN....336..590H.
Citation Info
VOResource XML (that's something exclusively for VO nerds)
![[Operator logo]](/static/img/logo_medium.png){kind=logo}