Table · dataset · 2026
V491 Vul UBVRI(RI)c light curves
Listed in IVOA Registry (Virtual Observatory)
Description
Using our long-term photometry and TESS data for the little-studied system V491 Vul (V=9.97mag, P=7.67 days, e=0.33, Sp 08 V + 09 V), the following absolute parameters: T1=42300^+1000^_-2000_K, M1=17.6+/-2M_{sun}_, R1=5.7+/-0.2R_{sun}_, T2=32900+/-1000K, M2=14.2+/-1.5M_{sun}_, R2=5.2+/-0.2R_{sun}_, and have been obtained for the first time the apsidal period of Paps=1048+/-11yrs is very close to the theoretical value under the condition of synchronism.
The photometric parallax of pi=0.00053" (d=1.89kpc) is somewhat higher than the value of Gaia DR3. The age of the system is estimated at 10 mln yrs.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/other/ARep/70.40 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2026ARep....70..40V ui.adsabs.harvard.edu/abs/2026ARep....70..40V ↗
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/other/arep/70.40 ↗
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/other/arep/70.40 | 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 |