Table · dataset · 2022
Young star clusters in NGC1313 with HST obs.
Listed in IVOA Registry (Virtual Observatory)
Using recently acquired Hubble Space Telescope NIR observations (J, Pa{beta}, and H bands) of the nearby galaxy NGC 1313, we investigate the timescales required by a young star cluster to emerge from its natal cloud.
Description
We search for extincted star clusters, potentially embedded in their natal cloud as either (1) compact sources in regions with high H{alpha}/Pa{beta} extinctions or (2) compact HII regions that appear as point-like sources in the Pa{beta} emission map.
The NUV-optical-NIR photometry of the candidate clusters is used to derive their ages, masses, and extinctions via a least-{chi}^2^ spectral energy distribution broad- and narrowband fitting process. The 100 clusters in the final samples have masses in the range log_10_(M/M_{sun}_)=2.5-3.5 and moderate extinctions, E(B-V)<~1.0mag. Focusing on the young clusters (0-6Myr), we derive a weak correlation between extinction and age of the clusters.
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Almost half of the clusters have low extinctions, E(B-V)<0.25mag, already at very young ages (<=3Myr), suggesting that dust is quickly removed from clusters. A stronger correlation is found between the morphology of the nebular emission (compact, partial or absent, both in H{alpha} and Pa{beta}) and cluster age. Relative fractions of clusters associated with a specific nebular morphology are used to estimate the typical timescales for clearing the natal gas cloud, resulting in between 3 and 5Myr, ~1Myr older than what was estimated from NUV-optical-based cluster studies.
This difference hints at a bias for optical-only-based studies, which James Webb Space Telescope will address in the coming years.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/909/121 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2021ApJ...909..121M ui.adsabs.harvard.edu/abs/2021ApJ...909..121M ↗
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/909/121 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 73%
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/909/121 | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (73%) |
| 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:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:uv | 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 |