ALMA chemical survey of disk-outflow sources in Taurus (ALMA-DOT) V: Sample, overview, and demography of disk molecular emission

Abstract

We present an overview of the ALMA chemical survey of disk-outflow sources in Taurus (ALMA-DOT), a campaign devoted to the characterization of the molecular emission from partly embedded, young stars. The project aims at better understanding the gaseous products that are delivered to planets by means of high-resolution maps of assorted lines probing disks at the time of the planet formation (less than 1 Myr). Nine different molecules are surveyed by our observations of six Class I/flat-spectrum sources. A series of accompanying articles analyze specific targets and molecules. Here we describe the sample and provide a general overview of the results, focusing on the spatial distribution, column densities, and abundance ratios of H${}_2$CO, CS, and CN. The results of this work are a first step toward the characterization of the disk chemical evolution that need to be complemented by further observations of less exceptional disks and customized thermo-chemical modeling.

arXiv commentAccepted for publication by A&A, 16 pages, 9 figures

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• The two hot corinos of the SVS13-A protostellar binary system: counterposed siblings
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• The SVS13-A Class I chemical complexity as revealed by S-bearing species. SOLIS XIII
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• Chemical modeling of Orion Nebula Cluster disks: evidence for massive, compact gas disks with ISM-like gas-to-dust ratios
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• Vertically extended and asymmetric CN emission in the Elias 2-27 protoplanetary disk
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• ALMA chemical survey of disk-outflow sources in Taurus (ALMA-DOT) VII: the layered molecular outflow from HL Tau and its relationship with the ringed disk
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• CO Line Emission Surfaces and Vertical Structure in Mid-Inclination Protoplanetary Disks
• A VLA View of the Flared, Asymmetric Disk Around the Class 0 Protostar L1527 IRS
• Which molecule traces what: chemical diagnostics of protostellar sources