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- ID:
- ivo://ned.ipac/NED_Names_for_Object
- Title:
- NED cross-IDs for object name
- Short Name:
- NED_names
- Date:
- 07 Sep 2022 22:01:00
- Publisher:
- NASA/IPAC Extragalactic Database
- Description:
- NED service to retrieve Cross-IDs for a named object. It retrieves the names of sources which have been cross-identified with the named object. NED is built around a master list of extragalactic objects, for which multi-wavelength cross-identifications have been established. Cross-identifications are based on a statistical, rule-based cross-matching algorithm that matches names, positions, redshifts, and other relevant data to objects already in NED. These matches are also vetted by human experts on the NED staff.
- ID:
- ivo://ned.ipac/Diameters_Data_by_Objects_Name
- Title:
- NED diameters for object name
- Short Name:
- NED_diameters
- Date:
- 07 Sep 2022 22:01:00
- Publisher:
- NASA/IPAC Extragalactic Database
- Description:
- NED service to retrieve diameters, axis ratios, and position angles for a named object. Diameters and related data, measured across the electromagnetic spectrum, have been collected from large surveys, compilations and the literature. These include optical diameters from SDSS, GALEX, RC3, ESO-B, ESO-LV, UGC, MCG, and many others.
- ID:
- ivo://ned.ipac/Notes_By_Object_Name
- Title:
- NED notes for object name
- Short Name:
- NED_notes
- Date:
- 07 Sep 2022 22:01:00
- Publisher:
- NASA/IPAC Extragalactic Database
- Description:
- NED service to retrieve notes, collected from various catalogs and journal articles, for a named object.
- ID:
- ivo://ned.ipac/Position_Data_By_Object_Name
- Title:
- NED positions for object name
- Short Name:
- NED_positions
- Date:
- 07 Sep 2022 22:01:00
- Publisher:
- NASA/IPAC Extragalactic Database
- Description:
- NED service to retrieve Positions for a named object.
- ID:
- ivo://ned.ipac/Redshift_By_Object_Name
- Title:
- NED redshifts for object name
- Short Name:
- NED_redshift
- Date:
- 07 Sep 2022 22:01:00
- Publisher:
- NASA/IPAC Extragalactic Database
- Description:
- NED service to retrieve redshift measurement for a named object in NED.
- ID:
- ivo://fs.usno/cat/nomad
- Title:
- NOMAD Catalogue
- Short Name:
- NOMAD
- Date:
- 11 Apr 2007 08:52:38
- Publisher:
- United States Naval Observatory, Flagstaff Station
- Description:
- The U.S. Naval Observatory (USNO) announces the release of the first version of the Naval Observatory Merged Astrometric Dataset (NOMAD). The 100 GB dataset contains astrometric and photometric data for over 1 billion stars derived from the Hipparcos, Tycho-2, UCAC2, and USNO-B catalogs for astrometry and optical photometry, supplemented by 2MASS near-infrared photometry. For each unique star the "best" astrometric and photometric data are chosen from the source catalogs and merged into a single dataset. A sequence of priorities is followed and NOMAD contains flags to identify the source catalogs and gives cross-reference identifications. This first release of NOMAD is not a compiled catalog; that is, if a star is identified in more than 1 of the above mentioned catalogs, only 1 catalog entry is chosen. Thus the local and global systematic errors of the various source catalogs will be present in this version of NOMAD. All source catalogs astrometric data are on the International Celestial Reference System within the limitations of the source catalogs. For more information and data retrieval see our homepage www.nofs.navy.mil/nomad.
- ID:
- ivo://ned.ipac/Basic_Data_By_Reference
- Title:
- The NASA/IPAC Extragalactic Database
- Short Name:
- NED_by_refcode
- Date:
- 10 Jun 2021 18:17:21
- Publisher:
- NASA/IPAC
- Description:
- NED service to query for Objects by Reference Code: The NASA/IPAC Extragalactic Database (NED) provides a comprehensive fusion of multi-wavelength data for hundreds of millions of objects located beyond the Milky Way galaxy. This service searches NED's master list of extragalactic objects by (19 digit) journal reference code. It returns object names, positions, and redshifts if available. It also returns counts of bibliographic references, notes, photometry, positions, redshifts, diameters, and positional associations.
- ID:
- ivo://irsa.ipac/Spitzer/Images/SWIRE
- Title:
- The Spitzer Wide-area InfraRed Extragalactic Survey
- Short Name:
- SWIRE
- Date:
- 27 Oct 2022 19:00:00
- Publisher:
- NASA/IPAC Infrared Science Archive
- Description:
- * A wide-area, high galactic latitude imaging survey conducted using the Spitzer MIPS far-infrared and IRAC mid-infrared cameras. The satellite data will be complemented by an extensive program of ground-based optical, near-infrared and radio observations.
- ID:
- ivo://fs.usno/cat/usnoa2
- Title:
- USNO-A2 Catalogue
- Short Name:
- USNO-A2
- Date:
- 03 Feb 2020 22:20:44
- Publisher:
- United States Naval Observatory, Flagstaff Station
- Description:
- USNO-A2.0 is a catalog of 526,280,881 stars, and is based on a re-reduction of the Precision Measuring Machine (PMM) scans that were the basis for the USNO-A1.0 catalog. The major difference between A2.0 and A1.0 is that A1.0 used the Guide Star Catalog (Lasker et al. 1986, see Cat. <I/220>) as its reference frame whereas A2.0 uses the ICRF as realized by the USNO ACT catalog (Urban et al. 1997, see Cat. II/246>). A2.0 presents right ascension and declination (J2000, epoch of the mean of the blue and red plate) and the blue and red magnitude for each star. Usage of the ACT catalog as well as usage of new astrometric and photometric reduction algorithms should provide improved astrometry (mostly in the reduction of systematic errors) and improved photometry (because the brightest stars on each plate had B and V magnitudes measured by the Tycho experiment on the Hipparcos satellite). The basic format of the catalog and its compilation is the same as for A1.0, and most users should be able to migrate to this newer version with minimal effort. (1 data file).