Table · dataset · 2026
Spectroscopic multiple-star syst. from LAMOST DR10
Listed in IVOA Registry (Virtual Observatory)
Description
We employed the Gaussian decomposition package Gausspy+ (Riener+ 2019A&A...628A..78R) to autonomously identify multipeak features in the cross-correlation functions (CCFs) of spectra from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Medium-Resolution Survey (MRS), enabling the detection of single-lined spectroscopic binaries (SB1s), double-lined spectroscopic binaries (SB2s), and spectroscopic triples (STs).
By providing Gausspy+ with training spectra exhibiting single-, double-, and triple-peak CCFs, we derived optimal fitting parameters suited to the dataset. To ensure the reliability of the fits, we established selection criteria for exposures showing double- or triple-peak CCFs based on statistical analysis of the test sample. Combining visual screening with our testing sets, the accuracy for SB2 identification reached 95.7%, while the accuracy for ST identification reached 98.6%.
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Applying this method to nearly 450,000 LAMOST DR10 targets, we identified 15,887 SB 2 candidates and 8771 ST candidates. In addition, we analyzed 903 targets that exhibit significant radial velocity (RV) variations but whose CCFs only show a single peak. For these objects, we performed orbital parameter inference using The Joker, and identified 294 SB1 candidates with periodic RV variations.
Notably, among the identified candidates, 65.3% of SB2s, 93.9% of STs, and 93.9% of SB1s are newly discovered systems, substantially expanding the census of spectroscopic multiple systems in the LAMOST MRS dataset. Furthermore, we also provide orbital solutions for 334 SB2 systems. For ST systems, we identified 46 hierarchical triple systems and obtained their orbital solutions.
These results further enrich the characterization of multiple star systems in the LAMOST MRS dataset.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/284/5 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2026ApJS..284....5H ui.adsabs.harvard.edu/abs/2026ApJS..284....5H ↗
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/apjs/284/5 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apjs/284/5 | 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 | |
| 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 |