Table · dataset · 2024
Planetary enriched white dwarf database, PEWDD
Listed in IVOA Registry (Virtual Observatory)
We present the Planetary Enriched White Dwarf Database (PEWDD), a collection of published photospheric abundances of white dwarfs accreting planetary debris alongside additional information relevant to metal-enrichment and the presence of infrared excesses, emission lines, and binary companions.
Description
At the time of publishing, PEWDD contains information on 1739 white dwarfs and will be kept up to date with information from new publications.
A total of 24 photospheric metals are recorded and are linked to accretion of exo-planetary material. The overall properties of metal-enriched white dwarfs are severely affected by observational selection effects. In particular, we find that the metals that are detectable strongly correlate with the effective temperature.
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By considering metal-enriched white dwarfs that have abundances measured by different methods, we find a spread that is comparable with the often-quoted ad hoc estimated abundance uncertainties, namely =~0.1-0.2dex. We draw attention to a dichotomy in the median accretion rates for metal-enriched H- and He-dominated white dwarfs, with dM_acc,H_/dt=7.7x10^7^g/s and dM_acc,He_/dt=8.7x10^8^g/s, when extrapolating bulk compositions from bulk Earth Ca abundance.
We identified 40 metal-enriched white dwarfs in binary systems and find evidence that enrichment is suppressed by binary companions within 200au.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/691/A352 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2024A&A...691A.352W ui.adsabs.harvard.edu/abs/2024A%26A...691A.352W ↗
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/691/a352 ↗
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/a+a/691/a352 | 15 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 |