Table · dataset · 2026
SRG/eROSITA sources in Blanco 1
Listed in IVOA Registry (Virtual Observatory)
Using data from the all-sky X-ray survey with the eROSITA telescope onboard the SRG orbital observatory and the optical catalog of Blanco 1 cluster members constructed from Gaia data, we have investigated the X-ray emission from cluster stars.
Description
Of the 723 cluster members located in the eastern Galactic part of the sky, eROSITA detects X-ray emission from 110 stars, thereby increasing the number of known sources by more than a factor of 2.
At the Blanco 1 distance (~234pc) the median eROSITA sensitivity in this sky region corresponds to a 0.3-2.3keV luminosity LX~1.1*10^29^erg/s, allowing more than 60% of the solar-type stars to be detected within the Blanco 1 tidal radius. For one source a strong (more than a factor of 10) X-ray variability on a time scale of six months has been recorded. This is a late-M star.
Read the rest (1 more)
The RX=log(LX/Lbol) distribution of Blanco 1 stars is bimodal. The left peak at RX_-4.2 is formed by FGK stars, while the right peak at RX~-3.1 consists predominantly of K and M stars. A comparison of the properties of X-ray sources in the similarly aged Blanco 1 and Pleiades clusters has shown a high level of consistency, pointing to a common evolutionary scenario for the X-ray activity of stars in these clusters.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/other/AstL/51.536 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2025AstL...51..536K ui.adsabs.harvard.edu/abs/2025AstL...51..536K ↗
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/other/astl/51.536 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- X-Ray
- 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/other/astl/51.536 | 13 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:x-ray | 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 |