Welcome to the NASA/IPAC Extragalactic Database (NED)
November 2017 Release Highlights
We are seeking input from people interested in beta testing and providing feedback to the NED team on the latest version of the New User Interface. A list of the new features can be found here. For access instructions, please contact us.
Tabular summaries of NED's current holdings are presented here. Graphic summaries are presented here.
References and Object Pointers
3,474,235 new object links (pointers) to 1,872 new references
150,000,000 2MASS Point Source Catalog sources from
The Two Micron All Sky Survey (2MASS)
(Skrutskie, M. F. et al.
Fundamental parameters for 471 million sources in the 2MASS Point Source Catalog (PSC) are being integrated into NED using an updated data ingestion and cross-matching
pipeline. This release contains the results of cross-matching 150 million sources (32% of the entire catalog) that are located at declination south of -37 degrees.
Among these 2MASS PSC sources, 92% are new objects to NED, and 8% have new cross-identifications with prior NED objects, including the
fusion of their photometric data into object SEDs. Cross-matching and data fusion for the rest of the catalog is in progress in the Production database,
and will be available in a NED update in early 2018.
585 new photometric data points integrated into SEDs, including:
VIS : VLT fluxes from Metallicity evolution, metallicity gradients, and gas fractions at z ~ 3.4
(Troncoso, P. et al. 2014A&A...563A..58T)
RADIO : ATCA fluxes from A Deep Chandra ACIS Survey of M83
(Long, Knox et al. 2014ApJS..212...21L)
SUBMM : Planck and Herschel fluxes from The Herschel Virgo Cluster Survey. XV. Planck submillimetre sources
in the Virgo Cluster(Baes M. et al. 2014MNRAS.437.3063K)
XRAY : Fermi fluxes from Why are some BL Lacertaes detected by Fermi,
but others not?
(Wu, Zhongzu et al. 2014A&A...562A..64W)
The Nature of the Diffuse Gamma-Ray Background
(Fornasa, Mattia and Sánchez-Conde, Miguel A., arXiv:1502.02866)
Status of Dark Matter in the Universe
(Freese, Katherine, arXiv:1701.01840)
Theoretical Challenges in Galaxy Formation
(Naab, Thorsten and Ostriker, Jeremiah P., arXiv:1612.06891)
Ultra-Deep Imaging: Structure of Disks and Haloes
(Knapen, Johan H. and Trujillo, Ignacio, arXiv:1612.05405)
Metallicities in the Outer Regions of Spiral Galaxies
(Bresolin, Fabio, arXiv:1612.05278)
Outskirts of Distant Galaxies in Absorption
(Chen, Hsiao-Wen, arXiv:1612.05305)
Outskirts of Nearby Disk Galaxies: Star Formation and Stellar Populations
(Elmegreen, Bruce G. & Hunter, Deidre A., arXiv:1612.05615v1)
Observational Diagnostics of Gas Flows: Insights from Cosmological Simulations
(Faucher-Giguère, Claude-André, arXiv:1612.00448)
Gas Accretion in Star-Forming Galaxies
(Kacprzak, Glenn G., arXiv:1612.00451)
Gas Accretion and Giant Lyman-Alpha Nebulae
(Cantalupo, Sebastiano, arXiv:1612.00491)
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.