Table information for 'tco_hot_supergiants.raw_data'

General

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Resource Description:

Spectral Archive of Hot Galactic Supergiants (TCO Node)

This resource provides a digital archive of one-dimensional (1D) optical spectra of hot galactic supergiants, obtained at the Three College Observatory (TCO). The archive is integrated into the Kazakhstan National Virtual Observatory (KazVO) data services and optimized for the IVOA Simple Spectral Access Protocol (SSAP).

Data Specification:

Observational Setup and Instrumentation:

Spectral Characteristics:

Data Reduction Pipeline:

Primary and scientific data reduction was performed within the IRAF (Image Reduction and Analysis Facility) environment using standard echelle spectroscopy packages.

Key Reduction Steps:

  1. Pre-processing: Bias frame subtraction.
  2. Extraction: Localization and extraction of individual echelle orders.
  3. Dispersion Relation: Wavelength calibration based on ThAr reference frames.
  4. Order Merging: Stitching of discrete spectral orders into a continuous 1D array.
  5. Kinematic Correction: Application of the heliocentric velocity correction (documented under the VHELIO FITS header keyword).
  6. Continuum Normalization: Continuum flattening achieved via high-order polynomial fitting.

For a list of all services and tables belonging to this table's resource, see Information on resource 'TCO eShel Spectra of Hot Supergiants'

Resource Reference URL: Resource info

Citing this table

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

@MISC{vo:tco_hot_supergia,
  year=2026,
  title={{TCO} eShel Spectra of Hot Supergiants},
  author={Danford, S. and Miroshnichenko, A.},
  url={https://dachs.fai.kz/tableinfo/tco_hot_supergiants.raw_data},
  howpublished={{VO} resource provided by the {FAI} archives}
}

Columns

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
ssa_dateObs Date Obs. Midpoint of exposure (MJD) d time.epoch
ssa_dstitle Title A compact and descriptive designation of the dataset. N/A meta.title;meta.dataset
ssa_targname Object Common name of object observed. N/A meta.id;src
ssa_length Length Number of points in the spectrum N/A N/A
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_specres Spec. Res. Resolution (in meters of wavelength) on the spectral axis m spect.resolution;em.wl
ssa_timeExt Exp. Time Exposure duration s time.duration
ssa_pubDID P. DID Dataset identifier assigned by the publisher N/A meta.ref.ivoid
accref Product key Access key for the data N/A meta.ref.url
owner Owner Owner of the data N/A N/A
embargo Embargo ends Date the data will become/became public yr 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 VOX:Image_FileSize
ssa_location Location ICRS location of aperture center deg pos.eq
ssa_region Coverage Rough coverage based on location and aperture. N/A pos.outline;obs.field
datalink DataLink A DataLink document for this spectrum, providing SODA access and the original file. N/A meta.ref.url
wave_min λ min Minimum wavelength covered by the spectrum. m em.wl;stat.min
wave_max λ max Maximum wavelength covered by the spectrum. m em.wl;stat.max
specrp R Spectral resolving power lambda/dlambda. N/A spect.resolution
calib_level Calib Level ObsCore-style calibration level. Merged relative flux spectra are level 2. N/A meta.code.qual
origfile Original file Original FITS file name before KazVO metadata enrichment. N/A meta.id
puborg Publisher Publishing archive or organisation. N/A meta.curation
dataorig Data origin Origin of the data with respect to KazVO/FAI. N/A meta.note
observer Observer Observer(s) listed in the FITS header. N/A meta.id;obs.observer
telescope Telescope Telescope used for the observation. N/A instr.tel
instrument Instrument Instrument or spectrograph used for the observation. N/A instr
camera Camera Camera listed in the FITS header. N/A meta.id;instr.det
detnam Detector Detector name listed in the FITS header. N/A meta.id;instr.det
bunit Flux unit Flux unit from the enriched FITS header. N/A meta.unit
norm Normalized True if the merged spectrum is continuum-normalized. N/A meta.code
wavecal Wavecal True if the spectrum is wavelength calibrated. N/A meta.code
fluxcal Flux calibration Flux calibration status from the enriched FITS header. N/A meta.code
biascor Bias corrected True if bias correction was applied. N/A meta.code
darkcor Dark corrected True if dark correction was applied. N/A meta.code
bpixcor Bad pixels True if bad-pixel map correction was applied. N/A meta.code
flatcor Flat corrected True if flat-field correction was applied. N/A meta.code
cosmicr Cosmic rays Cosmic ray removal method. N/A meta.code
tellcor Telluric corrected True if telluric correction was applied. N/A meta.code
helcor Heliocentric corrected True if heliocentric correction was applied. N/A meta.code

Columns that are parts of indices are marked like this.

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