The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field (ASPECS) is a 3D survey of gas and dust in distant galaxies. It focuses on the best-studied cosmological deep field, the iconic Hubble Ultra Deep Field. Capitalizing on the unparalleled sensitivity of ALMA the ASPECS data unveil reservoirs of molecular gas and dust in galaxies up to redshifts z~4, when the Universe was only 1/8th of today's age. This interstellar medium constitutes the matter out of which stars form, and it is thus a prerequisite of the star formation process, and thus a key driver for galaxy evolution. The ASPECS data - that can be obtained from this page - provide the most sensitive image of the sky at 1.2 mm available to date, disclosing the emission of dust, which is heated up by the star formation.
Data delivery of the ALMA Spectroscopic Survey in the Hubble Ultra Deep Field (ASPECS)
Available are the UV data of the full band 3 and band 6 frequency scans / mosaics in the Hubble Ultra Deep Field, and imaged cubes at different resolutions, as explained in the README file for each band.
This data can be obtained in two ways:
- download the full tarballs for each of the two bands: band 6 (size: 902Gb!) and band 3 (size: 388 Gb!)
- download individual files from the full tarballs, where one should first consult the README file to find out what each file contains: