What's New with NED

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(Latest Revision: 23 February 2016)

Welcome to the NASA/IPAC Extragalactic Database (NED)

January-February 2016 Release Highlights

User Interface

Try our next-generation user interface, which features a Simple Search box on the main screen. Results from searching Objects and Unprocessed Catalog Sources and Source Nomenclature now have improved table formatting, with options to change the number of rows per page, to sort on selected columns, and to search all columns.

Database Contents

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

References and Object Pointers

  • 43,411 new object links (pointers) to 1,207 new references including:
  • 5,835 galaxies from A Catalog of Visually Classified Galaxies in the Local (z ~ 0.01) Universe (Ann, H. B. et al., 2015ApJS..217...27A)
  • 2,735 2FGL sources from Refining the Associations of the Fermi Large Area Telescope Source Catalogs (Massaro, F. et al., 2015ApJS..217....2M)
  • 2,673 galaxies from Box/peanut and bar structures in edge-on and face-on nearby galaxies in the Sloan Digital Sky Survey - I. Catalogue (Yoshino, A. and Yamauchi, C. 2015MNRAS.446.3749Y)
  • 1,187 Supernova Remnants in 18 galaxies from Optical supernova remnants in nearby galaxies and their influence on star formation rates derived from Halpha emission Vucetic M.M.. et al., 2015MNRAS.446..943V)
  • 733 galaxies from Halpha3: an Halpha imaging survey of HI selected galaxies from ALFALFA . V. The Coma supercluster survey completion (Gavazzi, G. et al., 2015A&A...576A..16G)
  • 149 Globular clusters in M31 from M31 Globular Clusters in the Hubble Space Telescope Archive. I. Cluster Detection and Completeness (Bond, H.E. 2015AJ....149..132B)
  • 82 Planetary Nebulae in 6 galaxies from Hubble Space Telescope Snapshot Search for Planetary Nebulae in Globular Clusters of the Local Group (Barmby, P. and Huchra. J.P. 2001AJ....122.2458B)

Photometry

  • Vis : V and B magnitudes from The Observed Properties of Dwarf Galaxies in and around the Local Group (McConnachie, Alan W. 2012AJ....144....4M)
  • MIR : Gemini fluxes from The Nuclear Infrared Emission of Low-luminosity Active Galactic Nuclei (Mason, R. E. et al. 2012AJ....144...11M)

Redshift-Independent Distances

Images

  • 768 images from The Spitzer Local Volume Legacy (LVL) global optical photometry (Cook, David O. et al. 2014MNRAS.445..881C)

Spectra

  • 28 spectra from A spectral atlas of H II galaxies in the near-infrared (Martins, Lucimara P. et al. 2013MNRAS.431.1823M)
  • 371 spectra from Spectrophotometry of Nearby Field Galaxies: The Data (Rolf A. Jansen et al. 2000ApJS..126..331J)
  • 258 spectra from A study of the large-scale structure in the distribution of galaxies centered about the Cancer cluster. II. (Bicay M.D., Giovanelli R. 1986AJ.....91..732B)

Review Articles in LEVEL 5 Knowledgebase for Extragalactic Astronomy and Cosmology


New User Interface and New Approach for Data Integration

New User Interface

The NED user interface has begun a transition to a new, more modern style. This new interface may be previewed here. Drop down menus may be used to quickly access searches for objects, data, or literature. Clicking one of these options will lead to the classic, familiar search forms for services that have not yet adopted the new style. Searches By (or Near) Object Name, Near Position, and by RefCode (Reference Code) may be typed directly into a prominently featured smart box. The following search forms are available in the new style:

New Approach for Data Integration

NED has implemented a new methodology for integrating data from both very large catalogs (VLCs) containing hundreds of millions of sources, and smaller datasets from the literature. There is a new user interface to Search Objects and Unprocessed Catalog Sources, with an option to include incoming catalog sources that have not yet been cross-identified and had their key parameters fused with other information in NED.

The current release provides access to 471 million catalog sources from the 2MASS Point Source Catalog (2MASS PSC), 42 million catalog sources from the Spitzer Source List (SSTSL2), and 1.6 million catalog sources from the WIde-field nearby Galaxy-cluster survey (WINGS). Over 62 million catalog sources from the GALEX All Sky Survey Catalog (GASC) and the GALEX Medium Imaging Survey Catalog (GMSC) have already been cross-identified with NED objects or promoted to new NED objects.

In the past, cross-identifications between incoming catalog sources and objects in NED were integrated incrementally over many months as the results from cross-matching software were vetted and loaded into the database in chunks spanning across multiple NED updates. This had the disadvantage that only a fraction of catalog sources were accessible in NED until the catalogs were fully processed, and it was not clear exactly what subsets were in NED at any given time. In the new approach, selected parameters (columns) for all catalog sources (rows) are rapidly loaded into a new Catalog Source Representation layer of the database and made available for optional inclusion in search results along with the fully integrated NED objects. A detailed discussion of the ontology of unprocessed catalog sources (Status=S) versus NED objects (Status=O) may be found here.

The Introduction to NED has more details about all of NED's services, and NED's Features gives a brief overview of NED.

The NED History page has previous NED news.

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