Table · dataset · 2026
The Globular cluster Glimpse-C02
Listed in IVOA Registry (Virtual Observatory)
In this paper, we present the results of a detailed photometric analysis of Glimpse-C02, one of the most extincted globular clusters of the Milky Way.
Description
We built a deep color magnitude diagram spanning ~10 magnitudes and enabling the very first identification of the main sequence turnoff of the cluster. Due to the extreme reddening conditions of the region where the stellar system is located, a differential reddening correction was necessary.
The resulting reddening map shows color excess variations up to {delta}E(B-V)~2.5mag in the direction of the target. From isochrone-fitting of the differential reddening corrected color-magnitude diagram, we obtained a new estimate of the mean color excess, E(B-V)=6.33^+0.05^_-0.04_, and a distance modulus (m-M)_0_=14.00^+0.26^_-0.11_, corresponding to a distance of d=6.3^+0.8^_-0.3_kpc from the Sun, and a Galactocentric distance of 2.6^+0.6^_-0.7_kpc.
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This distance value, within the associated uncertainties, suggests that the cluster may be located closer to the Galactic Center compared to previous estimates, possibly supporting its classification as a bulge globular cluster. Furthermore, we obtained a photometric metallicity estimate of [Fe/H]=-0.30^+0.10^_-0.08_ and the first absolute age determination for Glimpse-C02, resulting in t=11.9^+0.7^_-0.6_Gyr, as typically measured for Galactic globular clusters at this metallicity.
We also obtained a new estimate of the center of gravity of the cluster and determined its projected density profile from resolved star counts, finding a high King concentration parameter (c=1.97_-0.67_^+0.51^) and a core radius r_c_=8.72^+0.40^_-0.35_arcsec. Finally, from the surface brightness profile of the system, we derived an integrated H-band magnitude M_H_=-7.9, corresponding to a mass of M=3.57^+0.22^_-0.19_x10^4^M_{sun}_.
Thus, our work classifies Glimpse-C02 as an old and metal-rich globular cluster that is in an advanced stage of its dynamical evolution.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/709/A186 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2026A&A...709A.186L ui.adsabs.harvard.edu/abs/2026A%26A...709A.186L ↗
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/709/a186 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Infrared
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 74%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/709/a186 | 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 (74%) |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:infrared | 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 |