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Table · dataset · 2024

The effects of stellar feedback on clumps in M8

Listed in IVOA Registry (Virtual Observatory)

The Lagoon Nebula (M8) is host to multiple regions with recent and ongoing massive star formation.

Description

The 37 known molecular clumps in M8 are affected by the presence of massive O- and B-type stars. We establish an inventory of molecular species in M8 by conducting an unbiased line survey for each clump.

Additional archival data from the Spitzer, Herschel, MSX, APEX, WISE, JCMT and AKARI telescopes are used to derive physical parameters of the dust emission. We identify 346 transitions from 70 different species. While many are exclusively seen toward M8 East, the other clumps also show a large chemical variety.

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We detect tracers of photo-dissociation regions across all the clumps and 38% of these clumps show signs of star formation. We find that PDR tracers are most abundant in clumps with relatively lower H2 column densities. When comparing M8 clumps to ATLASGAL sources at similar distances, we find them to be slightly less massive and have compatible luminosities and radii.

This possibly indicates a fragmentation of the gas caused by the O- and B-type stars. In contrast, dust temperatures of the clumps in M8 are found to be increased by approximately 5K (25%) indicating substantial external heating of the clumps by radiation of the present massive stars.

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Radio
Provenance · 1 source records, 8 field assertions
SourceKeyLast seenRaw
IVOA Registry (Virtual Observatory)ivo://cds.vizier/j/a+a/687/a16215 d agoJSON v1
FieldAssertionExtractorEvidence
access_levelsource · IVOA Registryconnector:ivoa_registry@1.0.0
concepts[field].local:field:astronomymapping · IVOA Registryconnector:ivoa_registry@1.0.0
concepts[modality].ivoa_waveband:radiosource · IVOA Registryconnector:ivoa_registry@1.0.0
descriptionsource · IVOA Registryconnector:ivoa_registry@1.0.0rr.resource.res_description
license_textsource · IVOA Registryconnector:ivoa_registry@1.0.0
publication_datesource · IVOA Registryconnector:ivoa_registry@1.0.0
titlesource · IVOA Registryconnector:ivoa_registry@1.0.0rr.resource.res_title
updated_datesource · IVOA Registryconnector:ivoa_registry@1.0.0