Table information for 'evn.main'

General

Table Description: Visibility data from the EVN Data Archive.

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

Resource Description: The data archive of the European VLBI Network (EVN). This archive contains Very Long Baseline Interferometry (VLBI) visibility data from observations of the EVN, the most sensitive VLBI array in the world. In addition, the archive makes available various correlator and pipeline products that give an impression of the data quality. In some cases, preliminary images of calibrators and target sources are also available.

For a list of all services and tables belonging to this table's resource, see Information on resource 'EVN Data Archive'

Citing this table

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

@MISC{vo:evn_main,
  year=2022,
  title={{EVN} Data Archive},
  author={Mark Kettenis},
  url={https://evn-vo.jive.eu/tableinfo/evn.main},
  howpublished={{VO} resource provided by the {EVN} Data Archive}
}

Columns

Sorted alphabetically. [Sort by DB column index]

NameTable Head DescriptionUnitUCD
_nparts _nparts N/A N/A meta.number
access_estsize Size Estimated size of data product kbyte phys.size;meta.file
access_url Access URL The URL at which to obtain the data set. N/A meta.ref.url
accref Product key Access key for the data N/A meta.ref.url
accsize File size Size of the data in bytes byte VOX:Image_FileSize
em_max λ_max Maximal wavelength represented within the data set m em.wl;stat.max
em_min λ_min Minimal wavelength represented within the data set m em.wl;stat.min
em_res_power λ/Δλ Spectral resolving power lambda/delta lambda N/A spect.resolution
em_xel |λ| Number of elements (typically pixels) along the spectral axis. N/A meta.number
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
obs_id Obs. Id Unique identifier for an observation N/A meta.id
obs_publisher_did Pub. DID Dataset identifier assigned by the publisher. N/A meta.ref.ivoid
owner Owner Owner of the data N/A N/A
pol_xel |Pol| Number of elements (typically pixels) along the polarization axis. N/A meta.number
s_dec Dec Dec of (center of) observation, ICRS deg pos.eq.dec
s_fov FoV Approximate spatial extent for the region covered by the observation deg phys.angSize;instr.fov
s_maximum_angular_scale S_maximum_angular_scale Maximum scale in dataset, shortest baseline and frequency dependent arcsec phys.angSize;stat.max
s_ra RA RA of (center of) observation, ICRS deg pos.eq.ra
s_region coverage Region covered by the observation, as a polygon N/A pos.outline;obs.field
s_resolution Space Res. Best spatial resolution within the data set arcsec pos.angResolution
s_resolution_max S_resolution_max Angular resolution, longest baseline and min frequency dependent arcsec pos.angResolution;stat.max
s_resolution_min S_resolution_min Angular resolution, longest baseline and max frequency dependent arcsec pos.angResolution;stat.min
t_exptime Exp. Time Total exposure time s time.duration;obs.exposure
t_max T_max Upper bound of times represented in the data set d time.end;obs.exposure
t_min Min. t Lower bound of times represented in the data set d time.start;obs.exposure
t_resolution Res. t Minimal significant time interval along the time axis s time.resolution
t_xel |t| Number of elements (typically pixels) along the time axis. N/A meta.number
target_name Target Name Object a targeted observation targeted N/A meta.id;src
uv_distance_max Uv_distance_max Maximal distance in uv plane m stat.fourier;pos;stat.max
uv_distance_min Uv_distance_min Minimal distance in uv plane m stat.fourier;pos;stat.min
uv_distribution_ecc Uv_distribution_ecc Eccentricity of uv distribution N/A stat.fourier;pos
uv_distribution_fill Uv_distribution_fill Filling factor of uv distribution N/A stat.fourier;pos;arith.ratio

Columns that are parts of indices are marked like this.

Other

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VOResource

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