Table · dataset · 2015
Radial velocities of 47 Oph
Listed in IVOA Registry (Virtual Observatory)
Although 47 Oph has been shown to be a binary with a period of ~27days using both spectroscopic and interferometric techniques, only a preliminary orbit has been obtained in the previous work due to the shortage of high precision measurements.
Description
Since 1997, new spectroscopic and interferometric measurements have been obtained with much higher precision by the spectrograph of the 2.16m telescope at Xinglong station and the Navy Precision Optical Interferometer, respectively.
Combining all of the measurements, a three-dimensional orbit is obtained with high precision in this work. Thus, the component masses are calculated to be 1.50+/-0.06 and 1.34+/-0.06M_{sun}_, respectively. The orbital parallax is 32.6+/-0.6mas, which is consistent with the Hipparcos parallax.
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With the known apparent magnitudes and color indices of the components, the derived luminosities are 7.80+/-0.36 and 3.41+/-0.25L_{sun}_. The estimated radii of the components are 2.06+/-0.07 and 1.36+/-0.06R_{sun}_. Finally, the evolutionary status of the components are investigated with the help of a stellar evolution model.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/149/110 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2015AJ....149..110W ui.adsabs.harvard.edu/abs/2015AJ....149..110W ↗
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/149/110 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/aj/149/110 | 11 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 | |
| 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 |