Table · dataset · 2026
RR Lyrae radial Velocities
Listed in IVOA Registry (Virtual Observatory)
We present the largest and most homogeneous catalog of radial velocity (RV) measurements for field RR Lyrae (RRLs) variables, based on both proprietary and publicly available spectroscopic data.
Description
The sample includes 17563 RRLs pulsating in the fundamental mode (12353 RRab), in the first overtone (5011 RRc), and in double-mode (199 RRd). RV curve (RVC) templates for metallic and Balmer lines were used to derive RV amplitudes and V_{gamma}_velocities, defined as the RV of the stellar barycenter with respect to the Sun.
The typical accuracy across the catalog is on average 3.8km/s for well-sampled RVCs, 6.5km/s for RVCs with 3-7 phase points and 11.3km/s for RVCs with less than three phase points. The use of different spectroscopic diagnostics and RVC templates provides, within the errors, very similar V_{gamma}_ velocities. We found that the metallicity dependence of RV amplitudes is vanishing for metallic lines, but becomes increasingly significant for H_{gamma} and H_{delta}_.
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Moreover, the scaling relations between photometric (V, G_BP_, G, G_RP_) and RV amplitudes are linear for RRc and nonlinear for RRab variables, independently of the adopted diagnostic. This circumstantial evidence indicates that convection affects more luminosity than RV amplitudes when moving from the blue (hot) to the red (cool) edge of the instability strip. The spectroscopic Bailey diagram (RV amplitude versus period) shows a smooth transition and a reduced spread at fixed period, when moving from metal-poor to metal-rich RRLs.
Finally, we also found evidence that the metallicity distribution function of Blazhko RRLs is skewed toward the metal-intermediate/metal-rich regime.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/713/A263 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2026A&A...713A.263B ui.adsabs.harvard.edu/abs/2026A%26A...713A.263B ↗
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/713/a263 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 71%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/713/a263 | 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 (71%) |
| 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 |