Table · dataset · 2022
BVRI photometry of nova V5856 Sgr
Listed in IVOA Registry (Virtual Observatory)
We report about the fast Nova Sgr 2016 N.4 being surprisingly trapped in a long-lasting and bright plateau (Delta(I)>=10mag above quiescence), six years past the nova eruption.
Description
Very few other novae experience a similar occurring. We have carried out an intensive observing campaign collecting daily BVRI photometry, monthly high-resolution optical spectroscopy, and observed the nova in ultraviolet and X-rays with Swift at five distinct epochs.
The bolometric luminosity radiated during the plateau is L(bol)~4200L_{sun}_ (scaled to the distance of the Galactic Bulge), corresponding to stable nuclear burning on a 0.6M_{sun}_ white dwarf. A stable wind is blown-off at FWZI~1600km/s, with episodic reinforcement of a faster FWZI~3400km/s mass-loss, probably oriented along the polar directions. The collision of such winds could power the emission detected in X-rays.
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The burning shell has an outer radius of ~25R_{sun}_ at which the effective temperature is ~7600K, values similar to those of a F0 II/Ib bright giant. The Delta(m)<1mag variability displayed during the plateau is best described as chaotic, with the irregular appearance of quasi-periodic oscillations with a 15-17 days periodicity. A limited amount of dust (~3x10^-11^M_{sun}_) continuously condense at T(dust)~1200K in the outflowing wind, radiating L(dust)~52L_{sun}_.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/667/A7 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2022A&A...667A...7M ui.adsabs.harvard.edu/abs/2022A%26A...667A...7M ↗
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/a%2Ba/667/a7 ↗
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/a+a/667/a7 | 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 |