Table · dataset · 2022
Spectro-phot. distances of ~ 300000 SEGUE stars
Listed in IVOA Registry (Virtual Observatory)
We present a new fully data-driven approach to derive spectro-photometric distances based on artificial neural network.
Description
The method was developed and tested on SEGUE data and will serve as a reference for the Contributed Data Product (SPdist) of the WEAVE survey. With this method, the relative precision on the distances is of ~13%.
The catalogue of more than 300000 SEGUE stars for which we have derived spectro-photometric distances is publicly available on the Vizier service of the Centre de Donnees de Strasbourg. With this catalogue of stars with distances, line-of-sight velocity, and Gaia proper motions, we have been able to identify stars belonging to the Cetus stellar stream in the integrals of motion space. With the properties of the Cetus stream that we derived from them, we search for stars from the blue horizontal and from the red giant branches along its orbital plane.
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With them, we ultimately found that the Cetus stream have a total stellar mass of ~1.5*10^6^M_{sun}_ and present prominent distance gradient of 15kpc over the ~100deg. that it covers on the sky. Additionally, we also report the discovery of a second structure, almost parallel to the Cetus stream, covering ~50deg. of the sky, that could potentially be a stellar stream formed by the tidal disruption of a globular cluster that was orbiting around the Cetus progenitor.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/660/A29 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2022A&A...660A..29T ui.adsabs.harvard.edu/abs/2022A%26A...660A..29T ↗
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/660/a29 ↗
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/660/a29 | 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 |