What's New with NED

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(Latest Revision: 23 April 2015)

Welcome to the NASA/IPAC Extragalactic Database (NED)

April 2015 Release Highlights

User Interface Upgrades

The new user interface contains the following advances:
  • A smart box on the main screen greatly simplifies common queries using a single entry point. You can enter an object name, an object name and search radius, coordinates and search radius, a refcode, or a ticket number (to check the status of a ByParameters search request). Most standard input formats for celestial coordinates are supported.
  • A new form to Search for Images by Object Name provides a response in the new interface style and paves the way for new functionality under development.

Cross-IDs and New Objects

  • 324,187 sources from the literature cross-identified with NED objects
  • 38,712 new NED objects

References and Object Pointers

  • 1,682 new references
  • 441,720 new object links (pointers) to references

Featured Additions to Objects and Basic Data

  • 9,900 new parts of galaxies (HII regions, globular clusters, planetary nebulae) from 68 different journal articles
  • 74 new supernovae published through Dec 2014 (CBAT)
  • 4,381 galaxies from WINGS-SPE. III. Equivalent width measurements, spectral properties, and evolution of local cluster galaxies (Fritz, J. et al. 2014A&A...566A..32F)
  • 428 galaxies and radio sources from Radio-Optical Reference Frame Link Using the U.S. Naval Observatory Astrograph and Deep CCD Imaging (Zacharias, N. & Zacharias, M. I. 2014AJ....147...95Z)
  • 1,515 galaxies from Tracing the Mass Growth and Star Formation Rate Evolution of Massive Galaxies from z ~ 6 to z ~ 1 in the Hubble Ultra-Deep Field (Lundgren, Britt F. et al. 2014ApJ...780...34L)
  • 528 X-ray sources in the field of MESSIER 031 from Around 200 New X-Ray Binary IDs from 13 yr of Chandra Observations of the M31 Center (Barnard, R. et al. 2014ApJ...780...83B)
  • 1,158 galaxies from Mapping Compound Cosmic Telescopes Containing Multiple Projected Cluster-scale Halos (Ammons, S. Mark et al. 2014ApJ...781....2A)
  • 2,478 galaxies in the field of ABELL 0383 from A Redshift Survey of the Strong-lensing Cluster Abell 383 (Geller, Margaret J. et al. 2014ApJ...783...52G)
  • 1,258 giant molecular clouds from The PdBI Arcsecond Whirlpool Survey (PAWS): Environmental Dependence of Giant Molecular Cloud Properties in M51 (Colombo, Dario et al. 2014ApJ...784....3C)
  • 4,199 2XLSSd X-ray sources from Classification and environmental properties of X-ray selected point-like sources in the XMM-LSS field (Melnyk, et al 2013A&A...557A..81M)
  • 2,123 objects around 6 galaxy clusters from The Contribution of Halos with Different Mass Ratios to the Overall Growth of Cluster-sized Halos (Lemze, et al. 2013ApJ...776...91L)
  • 1,778 galaxies from Faint Tidal Features in Galaxies within the Canada-France-Hawaii Telescope Legacy Survey Wide Fields (Atkinson, et al. 2013ApJ...765...28A)
  • 1,544 millimeter sources from Extragalactic Millimeter-wave Point-source Catalog, Number Counts and Statistics from 771 deg^2^ of the SPT-SZ Survey (Mocanu, et al. 2013ApJ...779...61M)
  • 1,796 more NEP objects from Hectospec and Hydra Spectra of Infrared Luminous Sources in the AKARI North Ecliptic Pole Survey Field (Shim, Hyunjin et al. 2013ApJS..207...37S)
  • 2,190 more WHL galaxy clusters from Substructure and dynamical state of 2092 rich clusters of galaxies derived from photometric data (Wen, Z. L. & Han, J. L. 2013MNRAS.436..275W)
  • 808 PiGSS radio sources from The Allen Telescope Array Pi GHz Sky Survey. III. The ELAIS-N1, Coma, and Lockman Hole Fields (Croft, Steve; Bower, Geoffrey C.; & Whysong, David 2013ApJ...762...93C)
  • 4,869 QSOs from The large area KX quasar catalogue - I. Analysis of the photometric redshift selection and the complete quasar catalogue (Maddox, Natasha et al. 2012MNRAS.424.2876M)
  • 2,976 XDEEP2 X-ray sources from The Chandra X-Ray Point-source Catalog in the DEEP2 Galaxy Redshift Survey Fields (Goulding, A. D. et al. 2012ApJS..202....6G)

Redshift-Independent Distances

Images

  • 1,597 images from Optical imaging for the Spitzer Survey of Stellar Structure in Galaxies. Data release and notes on interacting galaxies (Knapen,Johan H. et al. 2014A&A...569A..91K)
  • 14 cubes from PINGS: the PPAK IFS Nearby Galaxies Survey (Rosales-Ortega, F. F. et al. 2010MNRAS.405..735R)

Spectra

  • 727 spectra from 2MTF III. HI 21 cm observations of 1194 spiral galaxies with the Green Bank Telescope (Masters et al. 2014MNRAS.443.1044M)
  • 654 spectra from Uncertainties in 21 centimeter redshifts. I - Data (Tifft, W. G. and Cocke, W. J. 1988ApJS...67....1T)
  • 551 spectra from A southern sky survey of the peculiar velocities of 1355 spiral galaxies (Mathewson et al. 1992ApJS...81..413M)
  • 314 spectra from A study of the large-scale structure in the distribution of galaxies centered about the Cancer cluster. I. II. (Bicay et al. 1986AJ.....91..705B)
  • 269 spectra from H I 21 centimeter observations and I-band photometry of spiral galaxies behind the Virgo Cluster and toward its antipode (Lu et al. 1993ApJS...88..383L)
  • Plus 2,160 spectra from 28 publications.

Review Articles in LEVEL 5 Knowledgebase for Extragalactic Astronomy and Cosmology

Database Contents

The following table gives NED's current total holdings:

    Data Type Total
    Unprocessed Sources 515,235,015
    Distinct Objects 214,734,542
    Multiwavelength Cross-IDs 255,139,776
    Object Associations 1,413,595
    References 95,586
    Publication Abstracts 70,623
    Object Links to References 32,408,074
    Photometric Data Points 1,969,546,956
    Diameters 608,833,152
    Objects with Redshifts 5,198,941
    Redshift-Independent Distances 83,878
    Objects with Redshift-Independent Distances17,020
    Objects with Detailed Classifications229,792
    Detailed Object Notes 75,221
    Images 2,614,277
    Spectra 559,183


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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