News

Latest Release Highlights

User Interface (January 2021 Release)

  • The Objects in Refcode has been improved to accelerate the queries, and at the same time set a limit of 1,000 records for the displayed search results. The full result can be downloaded via the resource link above the data display area when the returned number of objects is over 1,000 but under 100,000. When the returned number of objects exceeds 100,000, please contact the NED helpdesk for further assistance.
  • A new version of Firefly deployed in this NED release provides better accessibility for long entries in the Notes and References tabs of object search results. A mouse-over at the end of any long cell entry now displays an ellipsis ('...'), which allows the user to either view the full content or copy it to the clipboard.
  • The Object Name in tables returned from multi-object searches are now links. When clicking on an object name, it will direct you to the "Detailed Information for a Named Object". These links were previously on the sequential numbers in the No. column ahead of the Object Name.
  • The default page size in Firefly tables has been increased from 100 to 1,000 rows. This applies to all the search result tables.
  • The Output Options in the Objects with parameter Constraints search form has been simplified to include only the three most frequently-used table formats: CSV (Text) - Bar Separated Values, TSV (Text) - Tab Separated Values, and VOTable (xml).

Database Contents (December 2020 Release)

Tabular summaries of NED's current holdings are presented here. Graphic summaries are presented here.

References and Object Pointers

1,991,875 new object links (pointers) to new references including:

  • 22,350 LAMOST Galaxies and redshifts from The LAMOST Complete Spectroscopic Survey of Pointing Area (LaCoSSPAr) in the Southern Galactic Cap. I. The Spectroscopic Redshift Catalog (Yang, M. et al., 2018ApJS..234....5Y ) and The Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST) Quasar Survey: The Fourth and Fifth Data Releases new large set of spectroscopic multiply lensed sources (Yao, S. et al., 2019ApJS..240....6Y )
  • 21,754 CLASH galaxies and redshifts from Crowded Field Galaxy Photometry: Precision Colors in the CLASH Clusters (Connor, T. et al., 2017ApJ...848...37C ) and A refined mass distribution of the cluster MACS J0416.1-2403 from a new large set of spectroscopic multiply lensed sources (Caminha, G. B. et al., 2017A&A...600A..90C )
  • 20,255 CASBaH galaxies and redshifts from The COS Absorption Survey of Baryon Harbors: The Galaxy Database and Cross-correlation Analysis of O VI Systems (Prochaska, J. X. et al., 2019ApJS..243...24P )
  • 17,292 Galaxies and redshifts from Comparison of hydrostatic and dynamical masses of distant X-ray luminous galaxy clusters (Foex, G. et al., 2017A&A...606A.122F )
  • 4,536 ICRF positions from Structure Effects for 3417 Celestial Reference Frame Radio Sources Xu, M. H. et al., 2019ApJS..242....5X )
  • 872 Supernovae through June 2020 from ASASSN , and Transient Name Server

Cross-IDs and New Objects

  • 387,194 sources from the literature cross-identified with NED objects
  • 92,059 new NED objects including galaxies, quasars, clusters of galaxies, supernovae, globular clusters as well as unidentified radio, visual, infrared, X-ray, and gamma-ray sources.

Redshifts

  • 320,356 additional redshifts
  • 30,379 more objects with redshifts

Photometry

2,983,224 new photometric data points integrated into SEDs, including:

  • VIS : HST magnitudes from A comprehensive HST BVI Catalogue of Star Clusters in Five Hickson Compact Groups of Galaxies (Fedotov, K. et al., 2015MNRAS.449.2937F)
  • NIR : Spitzer IRAC magnitudes from S-CANDELS: The Spitzer-Cosmic Assembly Near-Infrared Deep Extragalactic Survey. Survey Design, Photometry, and Deep IRAC Source Counts (Ashby, M.L.N. et al., 2015ApJS..218...33A)
  • RADIO : LOFAR fluxes from LOFAR/H-ATLAS: a deep low-frequency survey of the Herschel-ATLAS North Galactic Pole field (Hardcastle, M.J. et al., 2016MNRAS.462.1910H)
  • XRAY : Chandra fluxes from The 2 Ms Chandra Deep Field-North Survey and the 250 ks Extended Chandra Deep Field-South Survey: Improved Point-source Catalogs (Xue, Y.Q. et al., 2016ApJS..224...15X)
  • FIR : Herschel fluxes from Herschel protocluster survey: a search for dusty star-forming galaxies in protoclusters at z = 2-3 (Kato, Y. et al., 2016MNRAS.460.3861K)

For highlights in previous releases, please see Archived Release Notes.