Table · dataset · 2023
AKARI North Ecliptic Pole field in CFHT u-band
Listed in IVOA Registry (Virtual Observatory)
The AKARI infrared (IR) space telescope conducted two surveys (Deep and Wide) in the North Ecliptic Pole (NEP) field to find more than 100000 IR sources using its infrared camera (IRC).
Description
IRC's nine filters, which cover wavebands from 2 to 24{mu}m continuously, make AKARI unique in comparison with other IR observatories such as Spitzer or WISE. However, studies of the AKARI NEP-Wide field sources had been limited due to the lack of follow-up observations in the ultraviolet (UV) and optical.
In this work, we present the Canada-France-Hawaii Telescope MegaPrime/MegaCam u-band source catalogue of the AKARI NEP-Wide field. The observations were taken in seven nights in 2015 and 2016, resulting in 82 observed frames covering 3.6deg^2^. The data reduction, image processing, and source extraction were performed in a standard procedure using the ELIXIR pipeline and the ASTROMATIC software, and eventually 351635 sources have been extracted.
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The data quality is discussed in two regions (shallow and deep) separately, due to the difference in the total integration time (4520 and 13910s). The 5{sigma} limiting magnitude, seeing full width at half-maximum, and the magnitude at 50 per cent completeness are 25.38mag (25.79mag in the deep region), 0.82arcsec (0.94arcsec), and 25.06mag (25.45mag), respectively. The u-band data provide us with critical improvements to photometric redshifts and UV estimates of the precious infrared sources from the AKARI space telescope.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/498/609 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2020MNRAS.498..609H ui.adsabs.harvard.edu/abs/2020MNRAS.498..609H ↗
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/mnras/498/609 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Image 75%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/mnras/498/609 | 13 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].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 (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 |