DR19 is the second data release for the fifth phase of the Sloan Digital Sky Survey (SDSS-V). Its content is described in detail on the DR19 data release paper.
New in DR19 are:
- Optical and infrared spectra of more than half a million stars observed by Milky Way Mapper
- Optical spectra and redshifts for ~300,000 galaxies and quasars, observed by Black Hole Mapper
- Stellar parameters, abundances and radial velocities of DR19 Milky Way Mapper and DR17 APOGEE stars, delivered by the Astra data analysis pipelines
- Nine Value Added Catalogs based on Milky Way Mapper and Black Hole Mapper data products, delivered by the SDSS-V science teams
- One Helix Nebula tile, contributed by Local Volume Mapper as a preview for future data releases
- Brand-new user interfaces, Zora and Valis, to interact with SDSS-V spectra and data products, in a web browser or API
- A new set of Python Notebook Tutorials, that also run in SciServer Compute
In addition, DR19 contains:
- updated target information for the Black Hole Mapper, Milky Way Mapper and Open Fibers programs