Resolved ALMA observations of water in the inner astronomical units of the HL Tau disk

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dc.citation.firstpage587en_US
dc.citation.journalTitleNature Astronomyen_US
dc.citation.lastpage595en_US
dc.citation.volumeNumber8en_US
dc.contributor.authorFacchini, Stefanoen_US
dc.contributor.authorTesti, Leonardoen_US
dc.contributor.authorHumphreys, Elizabethen_US
dc.contributor.authorVander Donckt, Mathieuen_US
dc.contributor.authorIsella, Andreaen_US
dc.contributor.authorWrzosek, Ramonen_US
dc.contributor.authorBaudry, Alainen_US
dc.contributor.authorGray, Malcom D.en_US
dc.contributor.authorRichards, Anita M. S.en_US
dc.contributor.authorVlemmmings, Wouteren_US
dc.date.accessioned2024-10-08T13:28:38Zen_US
dc.date.available2024-10-08T13:28:38Zen_US
dc.date.issued2024en_US
dc.description.abstractThe water molecule is a key ingredient in the formation of planetary systems, with the water snowline being a favourable location for the growth of massive planetary cores. Here we present Atacama Large Millimeter/submillimeter Array data of the ringed protoplanetary disk orbiting the young star HL Tauri that show centrally peaked, bright emission arising from three distinct transitions of the main water isotopologue ($${\mathrm{H}}_{2}^{16}{\mathrm{O}}$$). The spatially and spectrally resolved water content probes gas in a thermal range down to the water sublimation temperature. Our analysis implies a stringent lower limit of 3.7 Earth oceans of water vapour available within the inner 17 astronomical units of the system. We show that our observations are limited to probing the water content in the atmosphere of the disk, due to the high dust column density and absorption, and indicate that the main water isotopologue is the best tracer to spatially resolve water vapour in protoplanetary disks.en_US
dc.identifier.citationFacchini, S., Testi, L., Humphreys, E., Vander Donckt, M., Isella, A., Wrzosek, R., Baudry, A., Gray, M. D., Richards, A. M. S., & Vlemmings, W. (2024). Resolved ALMA observations of water in the inner astronomical units of the HL Tau disk. Nature Astronomy, 8(5), 587–595. https://doi.org/10.1038/s41550-024-02207-wen_US
dc.identifier.digitals41550-024-02207-wen_US
dc.identifier.doihttps://doi.org/10.1038/s41550-024-02207-wen_US
dc.identifier.urihttps://hdl.handle.net/1911/117941en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license. Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleResolved ALMA observations of water in the inner astronomical units of the HL Tau disken_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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