Table · dataset · 2008
Chandra sources in Antennae galaxies, NGC 4038/39
Listed in IVOA Registry (Virtual Observatory)
We present the properties of the discrete X-ray sources detected in our monitoring survey of the Antennae galaxies with Chandra ACIS-S. We detect ~70 sources down to a typical luminosity of 7x10^37^ergs/s in each of the six monitoring observations.
Description
In the co-added observation (which has a total exposure of 411ks) we detect a total of 120 sources down to a luminosity of (2-5)x10^37^ergs/s, depending on the local background.
Fifteen sources have a strong extended component. Fourteen of the pointlike sources have luminosities above 10^39^ergs/s, at least in one exposure, which qualifies them as ultraluminous X-ray sources (ULXs). Ten of the ULXs show long-term variability, while one is observed only once, suggesting that it is a transient source.
Read the rest (2 more)
We find that 25 sources exhibit long-term variability clearly associating them with accreting compact objects. Twenty-one sources also show spectral variability. However, their variability patterns are diverse, indicating that they belong to different source classes.
Finally, we find a weak excess of hard sources at the low luminosities that we tentatively associate with pulsar X-ray binaries.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/166/211 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2006ApJS..166..211Z ui.adsabs.harvard.edu/abs/2006ApJS..166..211Z ↗
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/166/211 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- X-Ray
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 70%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apjs/166/211 | 14 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 (70%) |
| 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 |