Information on Service 'Spectra of lensed QSOs'

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An archive of optical and near-infrared spectra of strongly lensed quasars and the lensing galaxies. The spectra are resolved to about a few Ã…ngstroms and are flux-calibrated. The spectra resulted from deblending the lensed images in bidimensional spectra available from the SSAP service for ivo://org.gavo.dc/mlqso/q/s.

For a list of all services and tables belonging to this service's resource, see Information on resource 'Spectra of Strongly Lensed Quasars'

Overview

You can access this service using:

This service is not 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 caution.

Other services provided on the underlying data include:

Input Fields

The following fields are available to provide input to the service (with some renderers, some of these fields may be unavailable):

NameTable Head DescriptionUnitUCD
ssa_dateObs Date Obs. Midpoint of exposure d time.epoch
ssa_targname Object Common name of object observed. N/A meta.id;src

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.

NameTable Head DescriptionUnitUCD
accref Product key Access key for the data N/A meta.ref.url;meta.dataset
location_dec Dec N/A deg pos.eq.dec;meta.main
location_ra RA N/A deg pos.eq.ra;meta.main
remark Remark Remarks on the data set by the data creator. N/A meta.note
ssa_dateObs Date Obs. Midpoint of exposure d time.epoch
ssa_dstitle Title Title or the dataset (usually, spectrum) N/A meta.title;meta.dataset
ssa_redshift z Redshift of target object N/A src.redshift
ssa_specend Band end Upper value of spectral coordinate m em.wl;stat.max
ssa_specstart Band start Lower value of spectral coordinate m em.wl;stat.min
ssa_timeExt Exp. Time Exposure duration s time.duration

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.

NameTable Head DescriptionUnitUCD Verb. Level
accref Product key Access key for the data N/A meta.ref.url;meta.dataset 1
ssa_location Location ICRS location of aperture center deg pos.eq 5
ssa_dateObs Date Obs. Midpoint of exposure 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
remark Remark Remarks on the data set by the data creator. N/A meta.note 10
accsize File size Size of the data in bytes byte VOX:Image_FileSize 11
ssa_dstitle Title Title or the dataset (usually, spectrum) 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 N/A 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; use something generic like 'Optical' here. 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 instr.fov 15
ssa_specmid Mid. Band Midpoint of region covered in this dataset m em.wl;instr.bandpass 15
ssa_specext Bandwidth Width of the spectrum m em.wl;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
mime Type MIME type of the file served N/A N/A 20
owner Owner Owner of the data N/A N/A 25
embargo Embargo ends Date the data will become/became public a N/A 25

Copyright, License, Acknowledgements

Data in this service is licensed under the Creative Commons Attribution 3.0 License

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VOResource XML (that's something exclusively for VO nerds)

The Data Center is currently running in emergency mode after our database server failed catastrophically (see our blog for infos and updates).

This means, in particular, that services built on top of large tables may currently be broken. Since our replacement server is much slower than our usual machine, restoring them will take quite some time.

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