Information on Service 'Public Data Archive of Processed Hectospec Spectra'

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Optical spectra collected with the multi-fiber Hectospec Spectrograph at the MMT 6.5m telescope

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

Service Documentation

Longer service description and documentation can go there

Overview

You can access this service using:

This service is published as follows:

local means it is listed on our front page, ivo_managed means it has a record in the VO registry.

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
mime Type MIME type of the file served N/A meta.code.mime
ssa_dateObs Date Obs. Midpoint of exposure d time.epoch
ssa_location Location ICRS location of aperture center deg pos.eq
ssa_redshift z Redshift of target object N/A src.redshift
ssa_snr SNR Signal-to-noise ratio estimated for this dataset N/A stat.snr
ssa_specend Band end Upper value of spectral coordinate m em.wl;stat.max
ssa_specmid Mid. Band Midpoint of region covered in this dataset m em.wl;instr.bandpass
ssa_specstart Band start Lower value of spectral coordinate m em.wl;stat.min
ssa_targname Object Somewhat cleaned name of the target object as given in the file. The names should either be SIMBAD-resolvable or give a reference for the source. Some names we could not make sense of are marked with a tilda (~); any help figuring out what they are is appreciated. N/A meta.id;src
upload Upload Upload a list of target positions; this expects a text file with three floats per line (ICRS RA, Dec, radius, coordinates in degrees, radii in arcsec). N/A N/A

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
accsize File size Size of the data in bytes byte VOX:Image_FileSize
journal_ref Bibliography Bibliographic reference where the dataset is presented N/A meta.bib;meta.ref.url
location_dec Dec N/A N/A pos.eq.dec;meta.main
location_ra RA N/A N/A pos.eq.ra;meta.main
mime Type MIME type of the file served N/A meta.code.mime
ssa_aperture Aperture Angular diameter of aperture arcsec instr.fov
ssa_bandpass Bandpass Bandpass (i.e., rough spectral location) of this dataset; use something generic like 'Optical' here. N/A instr.bandpass
ssa_creatorDID Creator DataID Dataset identifier assigned by the creator N/A meta.id
ssa_dateObs Date Obs. Midpoint of exposure d time.epoch
ssa_location Location ICRS location of aperture center deg pos.eq
ssa_specend Band end Upper value of spectral coordinate Angstrom em.wl;stat.max
ssa_specext Bandwidth Width of the spectrum Angstrom em.wl;instr.bandwidth
ssa_specmid Mid. Band Midpoint of region covered in this dataset Angstrom em.wl;instr.bandpass
ssa_specstart Band start Lower value of spectral coordinate Angstrom em.wl;stat.min
ssa_targname Hecto Config Common name of object observed. N/A meta.id;src
ssa_timeExt Exp. Time Exposure duration N/A 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
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 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; this should be the most appropriate term from the values of VODataService vs:Waveband. 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 meta.code.mime 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

We encourage you to cite (1) Fabricant, D., Fata, R., Roll, J., et al. 2005, PASP, 117, 1411 and (2) observing program(s) from which data was obtained.

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