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Review Open access Sep 2026

A newly discovered VVVX star cluster surfing the Galactic disk

We report Garro 04, a previously unidentified stellar cluster toward the Galactic disk, which was discovered as part of the ESO/KMOS VVVX-GalCen Spectroscopic Survey. This object was serendipitously confirmed as a stellar overdensity in the VISTA Variables in the Vía Láctea eXtended (VVVX) survey footprint and subseque...

E. Garro, J. Fernández-Trincado, C. Obasi et al. · 0 citations
Preprint Oct 2026

First L-type substellar object discovered in the vicinity of the embedded cluster NGC 2023

We present the first substellar object in a star-forming region spectroscopically confirmed with Euclid, namely J054158.70-021031.4. This young and faint source is located close to the embedded open cluster NGC 2023. It has a spectral type of L3, a reddening of Av = 3 mag, proper motion consistent with the nearby clust...

S. Tsilia, C. Domínguez-Tagle, M. Žerjal et al. · 0 citations
Review Open access Oct 2026

The Bochum Survey of the Southern Galactic Disk: IV . Multi‐Band Photometry

The Southern Galactic Disk Survey (GDS) monitored a mosaic of 268 fields along a 6°‐wide stripe in the southern galactic disk from September 2010 to September 2019. These fields were observed between 21 and 407 times sim ultaneously in () and (), supplemented by between 2 and 147 observations in each of the bands , ,...

J. Blex, D. Bomans, K. Weis et al. · 0 citations
Open access Oct 2026

VVV CL001: A strong candidate for the most ancient star cluster in the Galaxy

Finding the oldest globular cluster of the Galaxy is important to constrain a lower limit on the age of the Galaxy and the Universe. VVV CL001 $( l,b = 5.26^̧irc,0.77^̧irc )$ is perhaps the most metal-poor (̊m Fe/H ∼-2.2 dex) globular cluster in the Galactic bulge and a promising candidate to be the oldest one in the e...

J. O. Carvajal, A. V. Navarro, C. Salvo-Guajardo et al. · 0 citations
Preprint Oct 2026

Revealing the companion of NGC 1850-BH1

The nature of the system NGC 1850-BH1 is discussed controversially in the literature. Located in the young (100 Myr) massive cluster NGC 1850 in the Large Magellanic Cloud, it was initially proposed to consist of a 5 $M_\odot$ main sequence turn-off star orbiting a stellar-mass black hole. However, subsequent analyses...

R. Seeburger, S. Saracino, S. Kamann et al. · 0 citations
Open access Sep 2026

A Homogenized Catalogue of Variable Stars in the Globular Cluster M22: Membership, Physical Parameters, and Distance

We present a photometric analysis of the variable stars in the field of the globular cluster M22 (NGC 6656), using time-series photometry from the literature and from OGLE and Gaia -DR3 data. From a sample of 666 variable stars in the field, we identify 94 as cluster members, including 10 RRab, 17 RRc, 2 Type II...

M. A. Yepez, B. Moreno-Amaro, M. Ornelas-Castañeda et al. · 0 citations

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