What's New with NED

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(Latest Revision: 18 July 2016)

Welcome to the NASA/IPAC Extragalactic Database (NED)

June-July 2016 Release Highlights

User Interface

Try our next-generation user interface, which features a Simple Search box on the main screen.

In response to a query such as "NGC 1365 images" in the Simple Search box (or using the image search form), the results can be rapidly sorted on various columns (e.g., spectral region) and searched for any string. A link to the IRSA Finderchart service enables users to change the field of view, or interact with imagery from major sky surveys such as 2MASS, WISE, and SDSS at the same location.

Database Contents

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

References and Object Pointers

  • 995,490 new object links (pointers) to 1,335 new references including:
  • 637,408 galaxies and galaxy groups from Galaxy Groups in the SDSS DR4 (Yang, X. et al. 2007ApJ...671..153Y )
  • 279,780 SDSS QSOs from The Sloan Digital Sky Survey quasar catalog: tenth data release (Paris, I. et al. 2014A&A...563A..54P )
  • 22,466 SDSS DR7 QSOs from Tracing a high redshift cosmic web with quasar systems (Einasto, M. et al. 2014A&A...568A..46E )
  • 355 SMC stars and star clusters from A slitless spectroscopic survey for H{alpha} emission-line objects in SMC clusters (Hales, C. et al. 2010A&A...509A..11M )

Photometry

  • MIR : Gemini, VLT and Subaru fluxes from The subarcsecond mid-infrared view of local active galactic nuclei - I. The N- and Q-band imaging atlas (Asmus, D. et al. 2014MNRAS.439.1648A
  • VIS : KPNO magnitudes from An Updated Catalog of M33 Clusters and Candidates: UBVRI Photometry and Some Statistical Results (Ma, Jun 2012AJ....144...41M
  • IR : WISE magnitudes from SDSS Quasars in the WISE Preliminary Data Release and Quasar Candidate Selection with Optical/Infrared Colors (Wu, Xues-Bing et al. 2012AJ....144...49W

Images

  • 116 images and cubes from The ATLAS3D project - XVIII. CARMA CO imaging survey of early-type galaxies (Alatalo et al. 2013MNRAS.432.1796A)
  • 385 images and cubes from The ATLAS3D project - XIII. Mass and morphology of H I in early-type galaxies as a function of environment (Serra et al. 2012MNRAS.422.1835S)

Spectra

  • 436 spectra from The ATLAS 3D project - IV. The molecular gas content of early-type galaxies (Young et al. 2011MNRAS.414..940Y)
  • 83 spectra from Molecular gas and star formation in the SAURON early-type galaxies (Combes et al. 2007MNRAS.377.1795C)

Latest 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) and 42 million catalog sources from the Spitzer Source List (SSTSL2). 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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