Table information for 'gama_dr3.spectra'

General

This table is available for ADQL queries and through the TAP endpoint.

Resource Description: Spectra from the third data release (DR3) of GAMA.

For a list of all services and tables belonging to this table's resource, see Information on resource 'GAMA-DR3 Spectra'

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference 2018MNRAS.474.3875B (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:gama_dr3_spectra,
  year=2021,
  title={{GAMA}-DR3 Spectra},
  author={Baldry et al.},
  url={https://vo.lam.fr/tableinfo/gama_dr3.spectra},
  howpublished={{VO} resource provided by the {CeSAM} Virtual Observatory Server}
}

Resource Documentation

GAMA (Galaxy And Mass Assembly) is a joint European-Australasian project based on spectroscopic observations using the AAOmega multi-object spectrograph on the Anglo-Australian Telescope (AAT).

This resource contains the spectra from the third data release of GAMA, for more information, please visit the GAMA web site [1].

Notes

We ingested all the spectra from the SpecAll.fits table (i.e. not the rows with xxx as URL) except 7 files that did not contain actual spectra; these are the SDSS spectra with SPECID 318630249967413248, 318630524845320192, 318715736996472832, 318800674269718528, 340069354064340992, 369430722538137600, and 601252573990643712.

This leads to 214 341 available spectra.

We also added to the spectra the IS_BEST and IS_SBEST information from the SpecAll.fits table from the GAMA web site.

The SSAP response contains this columns: spectral, flux, error, flux_nocalib, error_nocalib, and sky. Nevertheless, not all spectra contain all the information, in particular the calibrated flux is not available everywhere.

ACKNOWLEDGEMENTS

GAMA is a joint European-Australasian project based around a spectroscopic campaign using the Anglo-Australian Telescope. The GAMA input catalogue is based on data taken from the Sloan Digital Sky Survey and the UKIRT Infrared Deep Sky Survey. Complementary imaging of the GAMA regions is being obtained by a number of independent survey programmes including GALEX MIS, VST KiDS, VISTA VIKING, WISE, Herschel-ATLAS, GMRT and ASKAP providing UV to radio coverage. GAMA is funded by the STFC (UK), the ARC (Australia), the AAO, and the participating institutions. The GAMA website is http://www.gama-survey.org/ .

Please also visit the GAMA acknowledgements page [2].

[1]http://www.gama-survey.org/
[2]http://www.gama-survey.org/pubs/ack.php

Columns

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
accref Product key Access key for the data N/A meta.ref.url;meta.dataset
owner Owner Owner of the data N/A N/A
embargo Embargo ends Date the data will become/became public a N/A
mime Type MIME type of the file served N/A meta.code.mime
accsize File size Size of the data in bytes byte N/A
ssa_dstitle Title A compact and descriptive designation of the dataset. N/A meta.title;meta.dataset
ssa_creatorDID C. DID Dataset identifier assigned by the creator N/A meta.id
ssa_pubDID P. DID Dataset identifier assigned by the publisher N/A meta.ref.ivoid
ssa_cdate Proc. Date Processing/Creation date N/A time;meta.dataset
ssa_pdate Pub. Date Date last published. N/A N/A
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
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
ssa_targname Object Common name of object observed. N/A meta.id;src
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
ssa_redshift z Redshift of target object N/A src.redshift
ssa_targetpos Obj. pos Equatorial (ICRS) position of the target object. N/A pos.eq;src
ssa_snr SNR Signal-to-noise ratio estimated for this dataset N/A stat.snr
ssa_location Location ICRS location of aperture center deg pos.eq
ssa_aperture Aperture Angular diameter of aperture deg phys.angSize;instr.fov
ssa_dateObs Date Obs. Midpoint of exposure (MJD) d time.epoch
ssa_timeExt Exp. Time Exposure duration s time.duration
ssa_specmid Mid. Band Midpoint of region covered in this dataset m instr.bandpass
ssa_specext Bandwidth Width of the spectrum m instr.bandwidth
ssa_specstart Band start Lower value of spectral coordinate m em.wl;stat.min
ssa_specend Band end Upper value of spectral coordinate m em.wl;stat.max
ssa_length Length Number of points in the spectrum N/A N/A
ssa_model Model Data model name and version N/A N/A
ssa_csysName Sys System RA and Dec are given in N/A N/A
ssa_timeSI [Time] Time conversion factor in Osuna-Salgado convention. N/A N/A
ssa_spectralSI [Spectral] Spectral conversion factor in Osuna-Salgado convention N/A N/A
ssa_spectralucd UCD(spectral) UCD of the spectral column in the spectra served; when you have wavelengths, use em.wl for vacuum wavelengths, em.wl;obs.atmos for air wavelengths. N/A meta.ucd
ssa_spectralunit unit(spectral) Unit of the spectral column N/A meta.unit
ssa_fluxSI [Flux] Flux/magnitude conversion factor in Osuna-Salgado convention N/A N/A
ssa_fluxucd UCD(flux) UCD of the flux column N/A meta.ucd
ssa_fluxunit unit(flux) Unit of the flux column N/A meta.unit
ssa_dstype Data type Type of data (spectrum, time series, etc) N/A N/A
ssa_publisher Publisher Publisher of the datasets included here. N/A meta.curation
ssa_creator Creator Creator of the datasets included here. N/A N/A
ssa_collection Collection A short handle naming the collection this spectrum belongs to. N/A N/A
ssa_instrument Instrument Instrument or code used to produce these datasets N/A meta.id;instr
ssa_datasource Src Method of generation for the data (one of survey, pointed, theory, custom, artificial). N/A N/A
ssa_creationtype Using Process used to produce the data (archival, cutout, filtered, mosaic, projection, spectralExtraction, or catalogExtraction) N/A N/A
ssa_reference Ref. URL or bibcode of a publication describing this data. N/A meta.bib.bibcode
ssa_fluxStatError Err. flux Statistical error in flux N/A stat.error;phot.flux.density;em
ssa_fluxSysError Sys. Err flux Systematic error in flux N/A stat.error.sys;phot.flux.density;em
ssa_fluxcalib Calib Flux Type of flux calibration (ABSOLUTE, CALIBRATED, RELATIVE, NORMALIZED, or UNCALIBRATED). N/A N/A
ssa_binSize Spect. Bin Bin size in wavelength m em.wl;spect.binSize
ssa_spectStatError Err. Spect Statistical error in wavelength m stat.error;em
ssa_spectSysError Sys. Err. Spect Systematic error in wavelength m stat.error.sys;em
ssa_speccalib Calib. Spect. Type of wavelength calibration N/A meta.code.qual
ssa_specres Spec. Res. Resolution (in meters of wavelength) on the spectral axis m spect.resolution;em.wl
ssa_spaceError Err. Spc Statistical error in position deg stat.error;pos.eq
ssa_spaceCalib Calib. Spc Type of calibration in spatial coordinates N/A meta.code.qual
ssa_spaceRes Res. Spc Spatial resolution of data deg pos.angResolution
specid SpecId Unique ID of the spectrum N/A meta.id
cataid CataId ID of the matched GAMA object N/A meta.id
is_best Is Best Spectrum with best redshift for this object? N/A meta.code
is_sbest Is SBest Spectrum with best redshift for this object in originating survey? N/A meta.code
datalink Datalink A link to a datalink document for this spectrum. N/A meta.ref.url

Columns that are parts of indices are marked like this.

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