ATOMS I Description and a first look at G9.62+0.19

The ATOMS, standing for ALMA Three-millimeter Observations of Massive Star-forming regions, survey has observed 146 active star-forming regions with ALMA band 3, aiming to systematically investigate the spatial distribution of various dense gas tracers in a large sample of Galactic massive clumps, to study the roles of stellar feedback in star formation, and to characterize filamentary structures inside massive clumps. In this work, the observations, data analysis, and example science of the ATOMS survey are presented, using a case study for the G9.62+0.19 complex. Toward this source, some transitions, commonly assumed to trace dense gas, including CS J=2-1, HCO^+^J=1-0, and HCN J=1-0, are found to show extended gas emission in low-density regions within the clump; less than 25 per cent of their emission is from dense cores. SO, CH_3_OH, H^13^CN, and HC_3_N show similar morphologies in their spatial distributions and reveal well the dense cores. Widespread narrow SiO emission is present (over ~1pc), which may be caused by slow shocks from large-scale colliding flows or HII regions. Stellar feedback from an expanding HII region has greatly reshaped the natal clump, significantly changed the spatial distribution of gas, and may also account for the sequential high-mass star formation in the G9.62+0.19 complex. The ATOMS survey data can be jointly analysed with other survey data, e.g. MALT90, Orion B, EMPIRE, ALMA_IMF, and ALMAGAL, to deepen our understandings of 'dense gas' star formation scaling relations and massive protocluster formation.

Cone search capability for table J/MNRAS/496/2790/tablea1 (Basic parameters of the targets in the ATOMS survey)

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/496/2790
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/496/2790
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/496/2790
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/496/2790
Provenance
Creator Liu T.; Evans N.J.; Kim K.-T.; Goldsmith P.F.; Liu S.-Y.; Zhang Q.,Tatematsu K.; Wang K.; Juvela M.; Bronfman L.; Cunningham M.R.; Garay G.,Hirota T.; Lee J.-E.; Kang S.-J.; Li D.; Li P.-S.; Mardones D.; Qin S.-L.,Ristorcelli I.; Tej A.; Toth L.V.; Wu J.-W.; Wu Y.-F.; Yi H.-W.; Yun H.-S.,Liu H.-L.; Peng Y.-P.; Li J.; Li S.-H.; Lee C.W.; Shen Z.-Q.; Baug T.,Wang J.-Z.; Zhang Y.; Issac N.; Zhu F.-Y.; Luo Q.-Y.; Soam A.; Liu X.-C.,Xu F.-W.; Wang Y.; Zhang C.; Ren Z.
Publisher CDS
Publication Year 2023
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Galactic and extragalactic Astronomy; Interstellar medium; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy