ALMA and Herschel will explore the unknown as most of the sky is still to be observed at submillimetre wavelengths and high resolution.

The Atacama Large Millimeter/submillimeter Array (ALMA) is expected to release the call for Early Science proposals towards the end of 2010 and from 2011 will provide a huge breakthrough in exploring the 'cool universe'. ALMA will allow to study the earliest evolutionary stages of galaxies, stars and planets. These are deeply hidden within dust clouds where optical extinction can be extremely large but at far infrared and sub-millimeter wavelengths we directly measure physical phenomena associated with the formation process itself.

Complementary to ALMA is the Herschel Space Observatory satellite which has been successfully launched in May 2009 and is already showing its first exciting results. At the end of 2010 Herschel will be in flying since approximately 1.5 years and it is likely that a large fraction of the key programs observations will have been completed. Data reduction and analysis will be well under way and it will be a good timing to focus the community on the possibilities of early follow-up of Herschel surveys with ALMA.

ALMA has a small instantaneous field of view, but allows high angular resolution images of selected sources, while Herschel has a larger field of view, with a lower angular resolution. The SPIRE and PACS bolometer cameras provide the opportunity to cover large areas of the sky rather quickly, provide finding lists for ALMA and allowing shorter wavelength measurements of the source emission to give complete Spectral Energy Distributions, while ALMA measurements will be a unique follow ups.

The goal of the workshop is to get together the community of European astronomers involved in Herschel Key Programs that will be interested in proposing for ALMA early science. We thus propose to discuss the early results of Herschel in the context of the ALMA Early Science call for proposals, and foster possible collaborations to prepare a coordinated response to the first ALMA science from the community of Herschel users. The potential for deep legacy type surveys with the completed ALMA array will also be discussed.

For this workshop we are inviting contributions that both present scientific results based on Herschel surveys, and investigate into the exciting possibilities of the ALMA interferometer during Early Science.

Main science topics include

• Solar system
• Galactic low-mass star formation
• Galactic high-mass star formation
• Molecular clouds
• Protoplanetary disks
• Local Group
• Nearby galaxies
• AGNs
• Galaxy clusters
• Cosmological background