Table · dataset · 2012
High-ionization emission in metal-deficient BCDs
Listed in IVOA Registry (Virtual Observatory)
Primordial stars are expected to be very massive and hot, producing copious amounts of hard ionizing radiation.
Description
The best place to study hard ionizing radiation in the local universe is in very metal- deficient blue compact dwarf (BCD) galaxies. We have carried out a MMT spectroscopic search for [NeV] {lambda}3426 (ionization potential of 7.1Ryd), [FeV] {lambda}4227 (ionization potential of 4Ryd), and HeII {lambda}4686 (ionization potential of 4Ryd) emission in a sample of 18 BCDs.
We have added data from previous work and from the Data Release 3 of the Sloan Digital Sky Survey (Cat. <II/259>). In total, we have assembled a BCD high-ionization sample with [NeV] emission in four galaxies, [FeV] emission in 15 galaxies, and HeII emission in 465 galaxies.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/161/240 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2005ApJS..161..240T ui.adsabs.harvard.edu/abs/2005ApJS..161..240T ↗
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/apjs/161/240 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apjs/161/240 | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| 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 | |
| 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 |