Table · dataset · 2024
Star formation properties of LSBGs and SFs
Listed in IVOA Registry (Virtual Observatory)
We analyzed the star formation surface density ({SIGMA}_SFR_) between the global and HII regions in a sample of 69 low surface brightness galaxies (LSBGs) and 68 star-forming (SF) galaxies using data from the H{alpha} images.
Description
The conventional global {SIGMA}_SFR_, which is defined as the star formation rate (SFR) divided by the area of the global galaxy, may not accurately describe the star formation activity in LSBGs due to the lower number of HII regions compared to SF galaxies.
To address this, we divide the global galaxy into two regions, the HII region and the diffuse region, and then study the {SIGMA}_SFR_ in each region. Our results show that both the SFR and area of the HII regions in LSBGs are lower than those in SF galaxies, resulting in the HII region's {SIGMA}_SFR_ (SFR/area) being slightly lower in LSBGs than in SF galaxies by 0.28dex, although the global {SIGMA}_SFR_ is at least an order of magnitude lower in LSBGs than in SF galaxies.
Read the rest (1 more)
Furthermore, a significant difference exists between the global and HII regions in {SIGMA}_SFR_. In LSBGs, {SIGMA}_SFR_ increased by 0.80dex from the global region to the HII region, while SF galaxies demonstrate a 0.54dex increase, highlighting the crucial aspect of carefully selecting an appropriate aperture for {SIGMA}_SFR_ calculations.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/PASP/135/J4101 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2023PASP..135j4101L ui.adsabs.harvard.edu/abs/2023PASP..135j4101L ↗
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/pasp/135/j4101 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Image 65% · Stellar astronomy and planetary systems 77%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/pasp/135/j4101 | 14 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 (77%) |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · IVOA Registry | keyword-concept-rules@1.0.0 | title+description (65%) |
| 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 |