Table · dataset · 2024
Surface line identifications for HD 99803A
Listed in IVOA Registry (Virtual Observatory)
We report on a detailed abundance study of six bright, mostly southern, slowly rotating late B-stars: HD1279 (B8III), HD99803 (B9V), HD123445 (B9V), HD147550 (B9V), HD171961 (B8III), and HD202671 (B5II/III), hitherto reported as normal stars.
Description
We compare them to the two classical HgMn stars {mu}Lep and {beta}Scl, and to the superficially normal star {nu}Cap. In the spectra of the six stars, the HgII line at 3984{AA} line is clearly seen and numerous lines of P, Ti, Mn, Fe, Ga, Sr, Y, and Zr appear to be strong absorbers.
A comparison of newly acquired and archival spectra of these objects with a grid of synthetic spectra for selected unblended lines reveals large overabundances of P, Ti, Cr, Mn, Sr, Y, Zr, Ba, Pt, and Hg, and underabundances of He, Mg, Sc, and Ni. The effective temperatures, surface gravities, low projected rotational velocities, and the peculiar abundance patterns of the six investigated stars show that they are new chemically peculiar stars, mostly new HgMn stars, and are reclassified as such.
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The evolutionary status of these stars has been inferred, and their ages and masses estimated. The two most massive objects, HD1279 and HD202671, might have evolved away from the main sequence recently, the other stars are main-sequence objects. HD99803A is a sharp lined HgMn star with grazing eclipses.
From TESS and MASCARA photometry, we determine an orbital period of Porb=26.12022{+/-}0.00004day.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/166/54 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2023AJ....166...54M ui.adsabs.harvard.edu/abs/2023AJ....166...54M ↗
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/166/54 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 72%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/aj/166/54 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (72%) |
| concepts[field].local:field:astronomy | mapping · 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 |