BEARS ALMA Proposal Workshop 🧸

Urquhart+22 reported the catalogue of this study, with 71 spectroscopic redshifts across our sample using efficient ALMA tunings (with 56 co-authors). The data exploration is done across three papers, with Bendo+2022 reporting the dust properties from high-quality long-wavelength continuum observations, and Hagimoto+in prep. discussing the gas properties of these galaxies across the 156 spectral lines observed in this ALMA campaign.

In Cycle 8 and 8.5, follow-up observations of sixteen sources were completed with the 12m array at high resolution (0.3 to 0.1 arcsec across Bands 3 through 8) to target 85 spectral lines in six hours. Observations with the ACA are characterizing the sample properties as a whole, aiming to complete the redshift sample across all 85 sources, and to study the gas properties (through atomic carbon [CI] observations), star-formation properties (through water emission lines), and star-formation rates (through ionized carbon [CII] observations). This work has fueled successful expansions and continuations, with ongoing projects targeting all 85 galaxies across bands 3 through 8, observing 370 spectral lines.

The value of this catalogue is ever-increasing, with ancillary data from ALMA and other institutes (e.g., HST, Gemini, Subaru, ATCA, VISTA) enriching the data set. In fact, high-resolution observations have showcased different source types that warrant deep and dedicated follow-up, and the comprehensive nature of the sample makes large-scale high-resolution surveys of targeted lines (e.g., absorption lines) and subpopulations (e.g., the high-redshift tail, strong gravitational lenses, unlensed systems) desirable. We have expert ALMA data scientists on board, and are ready to expand the international scope of this project. The last two days of the workshop will be dedicated to planning of the follow-up proposals with input from the wider community.