A plain positional crossmatch service that allows file and URL uploads
to be crossmatched to DC-internal tables. In general, you want to use
TAP for this kind of thing when it is available, but in a pinch it
might come in handy. Larger catalogues that can be matched against
include 2MASS, USNO-B, PPMX, CARS, and more.
The GEOPS/IPSL DaCHS Server's TAP end point. The Table Access
Protocol (TAP) lets you execute queries against our database tables,
inspect various metadata, and upload your own data. It is thus the
VO's premier way to access public data holdings.
Tables exposed through this endpoint include: epn_core from the exotopo schema, epn_core from the pretharsis schema, columns, groups, key_columns, keys, schemas, tables from the tap_schema schema.
This service implements the Identifiers 2.0
suggestion for how to resolve an IVOA publisher dataset identifier;
that is, it tries to resolve the registry part to Datalink,
SSAP, or Obscore capabilities and tries those to find access URLs.
If that fails, it repeats this procedure for services that the
base resource declares as served-by.
The code used here is available at
http://svn.ari.uni-heidelberg.de/svn/gavo/hdinputs/ivoidval.
See also Examples_
.. _Examples: http://dc.g-vo.org/ivoidval/q/didresolve/examples
The global TAP schema collects information on
tables and columns from known TAP servers. This facilitates locating
queriable data by physics (via UCD) or keywords (via description).
Note that this shouldn't really be necessary as all information
present here should be exposed through Registry records. However,
in reality data providers currently are much more liable to give
column metadata in their tap_schema than in their Registry records.
Hence, for the time being, we maintain this service by harvesting
tap_schemas about monthly.
The global TAP schema collects information on
tables and columns from known TAP servers. This facilitates locating
queriable data by physics (via UCD) or keywords (via description).
Note that this shouldn't really be necessary as all information
present here should be exposed through Registry records. However,
in reality data providers currently are much more liable to give
column metadata in their tap_schema than in their Registry records.
Hence, for the time being, we maintain this service by harvesting
tap_schemas about monthly.
Gravitational arc candidates in the CFHTLS-Archive-Research Survey
CARS
Short Name:
carsarcs scs
Date:
27 Dec 2024 08:31:02
Publisher:
The GAVO DC team
Description:
Candidate gravitational arcs in the 37 deg^2 of
CFHTLS-Archive-Research Survey (CARS). The data include their
post-stamp images, astrometry, photometry (u*,g',r',i'), geometric
properties (length, length-to-width ratio, profile curvature, area),
and photometric redshifts. The arc candidates were selected booth with
an automatic arcfinder, based on a tailored image segmentation and a
color selection, and by visually inspecting the survey.
HALCA VSOP (the VLBI Space Observatory Programme) Correlated Data
Short Name:
HALCA
Date:
19 Oct 2021 07:12:04
Publisher:
JVO
Description:
The VSOP (VLBI Space Observatory Programme) mission was led by the Institute of Space and Astronautical Science, in collaboration with the National Astronomical Observatory of Japan with international collaboration with NSAS, CSA, JIVE and the world radio telescopes in 14 countries.
This mission provided a dedicated space radio telescope "HALCA" launched in February 1997, and carried out high-resolution observations at 1.6, 5.0, and 22 GHz with ground radio observatories to perform Very Long Baseline Interferometry (VLBI) on baselines of up to 2.6 Earth diameters. The observations are continued till 2003, and HALCA finished its operation in 2005.
