Table · dataset · 2014
Optical light curves of PHL1811 and 3C273
Listed in IVOA Registry (Virtual Observatory)
Variability is one of the most observable characteristics of active galactic nuclei, and it is important when considering the emission mechanism.
Description
In this paper, we report optical photometry monitoring of two nearby brightest quasars, PHL 1811 and 3C 273, using the ST-6 camera attached to the Newtonian focus and the Ap6E CCD camera attached to the primary focus of the 70cm meniscus telescope at the Abastumani Observatory, Georgia.
PHL 1811 was monitored during the period from 2002 September to 2012 December, while 3C 273 was monitored during the period from 1998 February to 2008 May. During our monitoring period, the two sources did not show any significant intra-day variability. The largest detected variations are {Delta}R=0.112+/-0.010mag. for PHL 1811, {Delta}B=0.595+/-0.099mag, {Delta}V=0.369+/-0.028mag, {Delta}R=0.495+/-0.076mag, and {Delta}I=0.355+/-0.009mag for 3C 273.
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When the periodicity analysis methods are adopted for the observations of the sources, a period of p=5.80+/-1.12yr is obtained for PHL 1811 in the R light curve in the present work, and periods of p=21.10+/-0.14, 10.00+/-0.14, 7.30+/-0.09, 13.20+/-0.09, 2.10+/-0.06, and 0.68+/-0.05yr are obtained for 3C 273 based on the data in the present work combined with historical works.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/213/26 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2014ApJS..213...26F ui.adsabs.harvard.edu/abs/2014ApJS..213...26F ↗
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/213/26 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 70%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apjs/213/26 | 14 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 (70%) |
| 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 |