This article was accepted into the corpus but its outbound wikilinks were never NER-processed — typical at the deepest BFS hop or when the run's entity cap was reached. No expansion funnel to show.
| NASA Extragalactic Database | |
|---|---|
| Name | NASA Extragalactic Database |
| Acronym | NED |
| Established | 1980s |
| Operator | California Institute of Technology; Infrared Processing and Analysis Center |
| Location | Pasadena, California |
| Access | Online |
NASA Extragalactic Database is an online curated database for extragalactic astronomy maintained by the Infrared Processing and Analysis Center at the California Institute of Technology with support from NASA and collaborations involving observatories and research centers. It aggregates published measurements, cross-identifications, and bibliographic links to unify heterogeneous records from missions like Hubble Space Telescope, Chandra X-ray Observatory, Spitzer Space Telescope, WISE, and surveys such as Sloan Digital Sky Survey and Two Micron All Sky Survey. The resource underpins research by teams working at institutions including European Southern Observatory, National Radio Astronomy Observatory, Jet Propulsion Laboratory, Max Planck Institute for Astronomy, and Harvard-Smithsonian Center for Astrophysics.
The project originated in the 1980s through initiatives by NASA, Jet Propulsion Laboratory, and the community around the International Astronomical Union to collate galaxy data from legacy catalogs like New General Catalogue, Messier catalog, and surveys such as Palomar Observatory Sky Survey. Early development involved partnerships with the Infrared Processing and Analysis Center and academic groups at California Institute of Technology and University of California, Berkeley, later expanding as missions including IRAS, Voyager program, and Hubble Space Telescope generated multiwavelength observations. Over successive decades NED integrated results from projects like Sloan Digital Sky Survey, Two Micron All Sky Survey, Galaxy Evolution Explorer, and instruments at Keck Observatory, reflecting evolving standards from bodies such as the International Virtual Observatory Alliance.
NED catalogs positions, redshifts, photometry, morphology, and cross-identifications for extragalactic objects drawn from literature authored at venues like The Astrophysical Journal, Monthly Notices of the Royal Astronomical Society, Astronomy & Astrophysics, and conference proceedings from meetings such as the American Astronomical Society and International Astronomical Union symposia. Coverage spans identifiers from historical compilations including Messier catalog and New General Catalogue to modern survey designations from Sloan Digital Sky Survey, Pan-STARRS, 2MASS, and radio catalogs from NRAO VLA Sky Survey and FIRST Survey. NED links spectral classifications used by teams at Max Planck Institute for Astrophysics, distance indicators employed by groups including those at Carnegie Institution for Science, and photometric systems standardized by collaborations like European Southern Observatory.
Primary inputs comprise peer-reviewed articles from publishers such as Cambridge University Press, IOP Publishing, and Springer Nature plus data releases from facilities like Hubble Space Telescope, Chandra X-ray Observatory, Spitzer Space Telescope, ALMA, Keck Observatory, and Very Large Telescope. Compilation methods include cross-matching algorithms developed with techniques from teams at Space Telescope Science Institute and statistical tools referenced in work by authors at Princeton University and Massachusetts Institute of Technology. NED employs positional matching, redshift reconciliation, and bibliographic tagging following standards set by the International Virtual Observatory Alliance and metadata practices used by archives such as the Mikulski Archive for Space Telescopes and Infrared Science Archive.
Users access NED via web interfaces and application programming interfaces modeled after services offered by SIMBAD, VizieR, and the Virtual Observatory framework; tools interoperate with software like TOPCAT, Astropy, ds9, and visualization packages used at Harvard-Smithsonian Center for Astrophysics. Services include cone searches, batch queries, cross-identification utilities, and citation-linked bibliographies connecting to articles in The Astrophysical Journal, Astronomy & Astrophysics, and archives such as arXiv. Integration allows workflows that combine catalog queries with data products from Sloan Digital Sky Survey, Gaia, WISE, and image servers operated by European Southern Observatory and National Optical Astronomy Observatory partners.
NED supports investigations into galaxy redshift surveys led by collaborations like Sloan Digital Sky Survey and teams studying active galactic nuclei in publications from The Astrophysical Journal and Monthly Notices of the Royal Astronomical Society. It is instrumental in cross-wavelength studies combining observations from Chandra X-ray Observatory, Spitzer Space Telescope, ALMA, and VLA to analyze star formation rates, galaxy morphology, and large-scale structure probed by projects such as Dark Energy Survey and Baryon Oscillation Spectroscopic Survey. The database has enabled catalog-based discoveries cited by researchers at Princeton University, University of Cambridge, University of Oxford, and Max Planck Institute for Astronomy and underpins survey planning for facilities including James Webb Space Telescope and next-generation observatories like Vera C. Rubin Observatory.
Maintenance and development are coordinated at the Infrared Processing and Analysis Center within California Institute of Technology, with funding and oversight from NASA and technical liaisons at Jet Propulsion Laboratory and partner archives such as Mikulski Archive for Space Telescopes and NASA/IPAC Infrared Science Archive. Staffing includes astronomers, software engineers, and data curators who collaborate with external groups at Harvard-Smithsonian Center for Astrophysics, European Southern Observatory, and national facilities like National Radio Astronomy Observatory. Policies on data curation and interoperability follow guidelines endorsed by the International Astronomical Union and the International Virtual Observatory Alliance.
Category:Astronomical catalogues