NED February 2024 Release

NED announces the February 2024 release. Highlights include:

Database Contents

Tabular summaries of NED's current holdings are presented here. Graphic summaries are presented here, updated with plots from the NED Local Volume Sample (NED-LVS; Cook et al. 2023), assessing the completelness of the galaxy census per unit volume.

References and Object Pointers

171,579 new object links (pointers) to 813 new references including:

• 7,070 galaxies from Systematically Measuring Ultra-diffuse Galaxies (SMUDGes) (Zaritsky, D. et al., 2023ApJS..267...27Z )
• 70,438 Chandra sources from Classifying Unidentified X-Ray Sources in the Chandra Source Catalog Using a Multiwavelength Machine-learning Approach (Yang, H. et al., 2022ApJ...941..104Y )
• 2,038 radio sources from The GLEAM 4-Jy (G4Jy) Sample (White, S. V. et al., 2020PASA...37...18W )
• 6,143 positions and redshifts for clusters of galaxies from AMICO galaxy clusters in KiDS-DR3 (Lesci, G. F. et al., 2022A&A...665A.100L )
• 7,100 positions and redshifts for clusters of galaxies from Evolution of the cluster optical galaxy luminosity function in the CFHTLS (Sarron, F. et al., 2018A&A...613A..67S )

Cross-IDs and New Objects

• 67,441 sources from the literature cross-identified with NED objects
• 21,421 new NED objects including galaxies, quasars, clusters of galaxies, supernovae, globular clusters as well as unidentified radio, visual, infrared, X-ray, and gamma-ray sources
• 847 Supernovae through December 2023 from Transient Name Server

Redshifts

• 161,668 additional redshifts
• 24,185 more objects with redshifts

For highlights in previous releases, please see Archived Release Notes.