Table · dataset · 2026
MIPAPS. II. Pa{alpha} emission-line sources
Listed in IVOA Registry (Virtual Observatory)
Using data from the MIRIS Pa{alpha} Galactic Plane Survey (MIPAPS), we present a Pa{alpha} 1.87{mu}m line image of the entire Galactic plane within the latitude range of -3{deg}<~b<~+3{deg}, revealing numerous Pa{alpha} features.
Description
Based on the MIPAPS Pa{alpha} image and the Wide-field Infrared Survey Explorer (WISE) HII region catalog, we compile a catalog of 1489 Pa{alpha} emission-line sources in the Galactic plane within 90{deg}<~l<~330{deg}.
By comparing our Pa{alpha} images with H{alpha} images constructed from the IPHAS and VPHAS+ survey data, we demonstrate the advantages of Pa{alpha} line observations. We identify 902 Pa{alpha} sources associated with HII regions, and newly confirm 619 HII region candidates as definitive HII regions through Pa{alpha} or H{alpha} detections. We also identify 261 extended and 326 pointlike Pa{alpha} sources not included in the WISE catalog, most of which have H{alpha} counterparts in the IPHAS or VPHAS+ images.
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A search of the SIMBAD database indicates that these sources originate from diverse object types. By measuring Pa{alpha} and H{alpha} fluxes, we estimate the E(B-V) color excesses derived from extended emissions for 138 Pa{alpha} sources, showing good agreement with values obtained from spectrophotometry of ionizing stars in previous studies. Furthermore, we calculate total Lyman continuum luminosities for 42 Pa{alpha} sources, providing constraints on the distances to HII regions and the spectral types of their ionizing stars.
These results highlight the scientific potential of Pa{alpha} line observations and the benefits of combining multiple hydrogen recombination lines in exploring ionized regions.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/279/55 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2025ApJS..279...55K ui.adsabs.harvard.edu/abs/2025ApJS..279...55K ↗
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/279/55 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Infrared
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Image 75%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apjs/279/55 | 12 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:infrared | 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 (75%) |
| 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 |