Table · dataset · 2021
BVRI and spectroscopic light curves of S5 0716+714
Listed in IVOA Registry (Virtual Observatory)
In order to study short timescale optical variability of {gamma}-ray blazar S5 0716+714, quasi-simultaneous spectroscopic and multiband photometric observations were performed from 2018 November to 2019 March with the 2.4m optical telescope located at Lijiang Observatory of Yunnan Observatories.
Description
The observed spectra are well fitted with a power law F_{lambda}_=A{lambda}^-{alpha}^ (spectral index {alpha}>0). Correlations found between {dot}{alpha}, {dot}A, {dot}A/A, {dot}F_{lambda}_, and {dot}F_{lambda}_/F_{lambda}_ are consistent with the trend of bluer-when-brighter (BWB).
It is the same case for colors, magnitudes, color variation rates, and magnitude variation rates of photometric observations. The variations of {alpha} lead those of F_{lambda}_. Also, the color variations lead magnitude variations.
Read the rest (2 more)
The observational data are mostly distributed in the I(+,+) and III(-,-) quadrants of the coordinate system. Both spectroscopic and photometric observations show BWB behaviors in S5 0716+714. The observed BWB may be explained by the shock-jet model, and its appearance may depend on the relative position of the observational frequency ranges with respect to the synchrotron peak frequencies, e.g., at the left of the peak frequencies.
Fractional variability amplitudes are F_var_~40% for both spectroscopic and photometric observations. Variations of {alpha} indicate variations of relativistic electron distribution producing the optical spectra.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/888/30 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2020ApJ...888...30F ui.adsabs.harvard.edu/abs/2020ApJ...888...30F ↗
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/888/30 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 68%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/888/30 | 13 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 (68%) |
| 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 | |
| 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 |