Table · dataset · 2025
YSO candidates in 30 Doradus from IR and ALMA obs.
Listed in IVOA Registry (Virtual Observatory)
In this work, we present 299 candidate young stellar objects (YSOs) in 30 Doradus discovered using Spitzer and Herschel point-source catalogs, 276 of which are new.
Description
We study the parental giant molecular clouds in which these YSO candidates form using recently published Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 7 observations of ^12^CO and ^13^CO. The threshold for star formation in 30 Doradus inferred by the LTE-based mass surface density is 178M_{sun}_/pc^2^, 40% higher than the threshold for star formation in the Milky Way.
This increase in star formation threshold in comparison to the Milky Way and increase in line width seen in clumps 11pc away in comparison to clumps 45pc away from the R136 super star cluster could be due to injected turbulent energy, increase in interstellar medium pressure, and/or local magnetic field strength. Of the 299 YSO candidates in this work, 62% are not associated with ^12^CO molecular gas. This large fraction can be explained by the fact that 75%-97% of the H2 gas is not traced by CO.
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We fit a Kroupa initial mass function to the YSO candidates and find that the total integrated stellar mass is 18000M_{sun}_ and that the region has a star formation rate (SFR) of 0.18M_{sun}_/yr. The initial mass function determined here applies to the four 150"x150" (37.5pcx37.5pc) subfields and one 150"x75" (37.5pcx18.8pc) subfield observed with ALMA. The SFR in 30 Doradus has increased in the past few million years.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/944/26 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2023ApJ...944...26N ui.adsabs.harvard.edu/abs/2023ApJ...944...26N ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/apj/944/26 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Infrared · Millimeter · Radio
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Stellar astronomy and planetary systems 76%
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/944/26 | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:field:510109 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (76%) |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:infrared | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:millimeter | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:radio | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |