Table · dataset · 2024
Line identifications for {alpha} Sex
Listed in IVOA Registry (Virtual Observatory)
The analysis of the available Transiting Exoplanet Survey Satellite (TESS) light curves of {alpha}Sex (HD87887) reveals low-frequency pulsations with a period of about 9.1hr in this spectroscopic A0III standard star.
Description
The IUE observations in 1992 December reveal large flux variations both in the far-UV and in the mid-UV, which are accompanied by variations of the brightness in the V band recorded by the the Fine Error Sensor on board IUE.
The ultraviolet variability could be due to an eclipse by an hitherto undetected companion of smaller radius, possibly 2.5R{sun}, but this needs confirmation by further monitoring possibly with TESS. An abundance determination yields solar abundances for most elements. Only carbon and strontium are underabundant and titanium, vanadium, and baryum mildly overabundant.
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Identification is provided for most of the lines absorbing more than 2% in the optical spectrum of {alpha}Sex. Stellar evolution modeling shows that {alpha}Sex is near the terminal-age main sequence, and its mass, radius, and age are estimated to be M=2.57{+/-}0.32M{sun}, R=3.07{+/-}0.90R{sun}, A=385{+/-}77Myr, respectively.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/166/73 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2023AJ....166...73M ui.adsabs.harvard.edu/abs/2023AJ....166...73M ↗
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/166/73 ↗
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/166/73 | 15 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 |