Table · dataset · 2022
UBVRI photometry of the eclipsing system V490 Sct
Listed in IVOA Registry (Virtual Observatory)
We report long-term UBVRIRcIc photometry of the highly eccentric 12.04 day detached eclipsing binary V490Sct (V=13.1, B9.5+A0,e=0.40), which we use to determine its relative and absolute parameters.
Description
The absolute masses, radii, and temperatures are MA=2.33{+/-}0.07M{sun}, RA=1.90{+/-}0.04R{sun}, and TA=9960{+/-}60K for the primary and MB=2.23{+/-}0.07M{sun}, RB=1.86{+/-}0.04R{sun}, and TB=9700{+/-}80K for the secondary.
The system displays a slow periastron advance that is dominated by General Relativity (GR). Our measurement, {omega}=0.86deg/century, is 32% less then the expected rate, {omega}=1.24deg/century, which has an 83% contribution from GR. A comparison with current stellar evolution models shows a good match to the measured properties at an age of about 130Myr and Solar abundance.
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The photometric parallax of the system {pi}=0.73{+/-}0.04mas, matches the GAIA DR2 value, {pi}=0.76{+/-} 0.04mas.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/164/194 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2022AJ....164..194V ui.adsabs.harvard.edu/abs/2022AJ....164..194V ↗
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/aj/164/194 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/aj/164/194 | 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: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 |