Welcome to the NASA/IPAC Extragalactic Database (NED)
April 2013 Release
New and Improved Functionality
-
Foreground Galactic extinction values (Aλ [mag]) based on
Schlafly et al.
2011 are now computed using the latest version of the
Schlegel et al.
1998 dust maps and code available at
http://www.astro.princeton.edu/~schlegel/dust/.
-
New capability to return foreground Galactic extinction values
(Aλ [mag]) from
Schlafly et al.
2011 in up to 88 photometric bands in the Customized Output
feature of the Build Data Table from Input List tools
(By Name and
Near Name/Position), and in the
By Classifications query form.
-
Corrections were made to the logic for
By Parameters (All-Sky)
searches. These bug fixes improve searches involving constraints on
multiple object types and searches excluding particular name prefixes.
-
The results of Photometric Data
searches have been revised such that when Fν in Jansky [Jy]
or [W m-2 Hz-1] units are selected for
homogenized flux density values derived by NED, these only
apply to broad-band photometric measurements; homogenized spectral line
measurements are now given in their proper integrated flux
units of [Jy Hz] or [W m-2].
-
Notice of Discontinuing Services:
Server Mode (nedsrv) soon to be replaced with web services.
Database Contents
The following table gives statistics for data added to NED since
the previous public update and total NED holdings:
| Data Type | Added | Total |
|---|
| Unique Objects | 310,514 | 177,171,814 |
| Publication Abstracts | 1,401 | 62,639 |
| References | 3,167 | 87,104 |
| Object Links to References | 1,672,995 | 27,563,536 |
| Multiwavelength Cross-IDs | 1,708,218 | 192,140,592 |
| Object Associations | 1,766 | 1,400,791 |
| Photometric Data Points | 77,594 | 1,746,037,957 |
| Objects with Redshifts | 133,971 | 4,154,567 |
| Redshift-Independent Distances | 225 | 64,404 |
| Objects with Redshift-Independent Distances | 0 | 13,407 |
| Objects with Detailed Classifications | 6,750 | 216,012 |
| Images | 27,071 | 2,725,265 |
| Spectra | 317 | 478,207 |
| Detailed Object Notes | 522 | 72,137 |
Highlights of Latest Additions to Objects and Basic Data
Highlights of Latest Additions to Photometry
Latest Images
-
26,748 images in the u, g, r, i, and z bands for a sample of 4458 PGC
galaxies from the EFIGI catalogue.
Baillard et al.
2011A&A...532A..74B
-
122 images from an H I/Optical Atlas of Isolated Galaxies.
D. J. Pisano, Eric M. Wilcots and Charles T. Liu.
2002ApJS..142..161P
Latest Spectra
-
192 spectra from GHASP: an H-alpha kinematic
survey of 203 spiral and irregular galaxies - VII.
Epinat et al.
2008MNRAS.390..466E
-
44 spectra from Comparison of AGN and Nuclear
Starburst Activity in Seyfert 1 and 2 Galaxies Based on Near-Infrared 2-4
micron Spectroscopy.
Oi et al.
2010PASJ...62.1509O
-
45 spectra from An H I study of Scd galaxies.
Shostak, G.
1975ApJ...198..527S
-
36 spectra from Observations of Neutral Hydrogen
in Bright Southern Galaxies.
Whiteoak, J. B., and Gardner, F. F.
1977AuJPh..30..187W
NOTE: If you would like to have your FITS image or spectral data
become available for use by other researchers via NED, please
leave a comment
with your name and email address so that we may contact you.
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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