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Investigating the Young Stellar Populations and Hierarchies in Nearby Galaxies with the UVIT. III. Evidence for a Largest Scale of Correlated Stellar Structures and a Non-universal Fractal Dimension
Gairola Shashank, Smitha Subramanian, Shyam H. Menon +5
Scale-free turbulent motions, gravitational collapse and galactic dynamics govern galactic-scale, hierarchical organization of star formation (SF) within galaxies. Past studies sug…
Deep VISTA observations of the Magellanic Clouds (VMCDeep)
M. -R. L. Cioni, A. O. Omkumar, N. J. G. Cross +28
The central regions of galaxies challenge observers with a high density of stars, gas and dust. The LMC hosts a dense stellar bar whereas the SMC hosts a dense core, which have elu…
Star Clusters in the Ultraviolet
Annapurni Subramaniam, Samyaday Choudhury, Richard de Grijs +5
Ultraviolet (UV) observations provide a powerful window into the hot and evolved stellar populations that shape the structure, evolution and integrated light of star clusters. Beca…
The VMC survey -- LV. The coherent expansion of the SMC
S. Vijayasree, F. Niederhofer, M. -R. L. Cioni +8
The Small Magellanic Cloud (SMC) exhibits significant kinematic disequilibrium due to interactions with the Large Magellanic Cloud (LMC). Here, we investigate the two-dimensional s…
The GALAH Survey: Neutron-Capture Elemental Abundances for 350,000 Gaia-RVS spectra and the Chemodynamics of Accreted Structures
Pradosh Barun Das, Daniel B. Zucker, Aldo Mura-Guzmán +15
We present a comprehensive data-driven spectroscopic analysis of 357,415 red giant stars using Gaia DR3 Radial Velocity Spectrometer (RVS) spectra (8460-8700 A; ),…
The HASHTAG project II. Giant molecular cloud properties across the M31 disc
Yikai Deng, Zongnan Li, Zhiyuan Li +17
We present a study of giant molecular cloud (GMC) properties in the Andromeda galaxy (M31) using CO(3-2) data from the James Clerk Maxwell Telescope (JCMT) in selected regions acro…
An automated method to detect and characterise semi-resolved star clusters
Amy E. Miller, Zachary Slepian, Elizabeth A. Lada +8
We present a novel method for automatically detecting and characterising semi-resolved star clusters: clusters where the observational point-spread function (PSF) is smaller than t…
The GALAH Survey: Stellar parameters and abundances for 800,000 Gaia RVS spectra using GALAH DR4 and The Cannon
Pradosh Barun Das, Daniel B. Zucker, Gayandhi M. De Silva +15
Analysing stellar parameters and abundances from nearly one million Gaia Data Release 3 (DR3) Radial Velocity Spectrometer (RVS) spectra poses challenges due to the limited spectra…
New quasars behind the Magellanic Clouds. II. Spectroscopic confirmation of 136 near-infrared selected candidates
Valentin D. Ivanov, Maria-Rosa L. Cioni, Michel Dennefeld +6
Quasi-stellar objects (QSOs) are a basis for an absolute reference system for astrometric studies. There is a need for creating such system behind nearby galaxies, to facilitate th…
The GALAH survey: Elemental abundances in open clusters using joint effective temperature and surface gravity photometric priors
Kevin L. Beeson, Janez Kos, Richard de Grijs +10
The ability to measure precise and accurate stellar effective temperatures () and surface gravities () is essential in determining accurate and precise abund…
Kinematics of stellar substructures in the Small Magellanic Cloud
Dalal El Youssoufi, Maria-Rosa L. Cioni, Nikolay Kacharov +6
We present a kinematic analysis of the Small Magellanic Cloud using 3700 spectra extracted from the European Southern Observatory archive. We used data from Gaia and near-infrared…
Search for OB associations in {\sl Gaia} early Data Release 3
Alexander A. Chemel, Richard de Grijs, Elena V. Glushkova +1
The distribution of young stars into OB associations has long been in need of updating. High-precision {\sl Gaia} early Data Release 3 astrometry, coupled with modern machine-learn…
The intrinsic reddening of the Magellanic Clouds as traced by background galaxies -- III. The Large Magellanic Cloud
Cameron P. M. Bell, Maria-Rosa L. Cioni, Angus H. Wright +15
We present a map of the total intrinsic reddening across ~90 deg of the Large Magellanic Cloud (LMC) derived using optical (ugriz) and near-infrared (IR; YJKs) spectral energ…
The VMC survey -- XLV. Proper motion of the outer LMC and the impact of the SMC
Thomas Schmidt, Maria-Rosa L. Cioni, Florian Niederhofer +8
The Large Magellanic Cloud (LMC) is the most luminous satellite galaxy of the Milky Way and owing to its companion, the Small Magellanic Cloud (SMC), represents an excellent labora…
The HASHTAG project: The First Submillimeter Images of the Andromeda Galaxy from the Ground
Matthew W. L. Smith, Stephen A. Eales, Thomas G. Williams +46
Observing nearby galaxies with submillimeter telescopes on the ground has two major challenges. First, the brightness is significantly reduced at long submillimeter wavelengths com…
The VMC survey XXVIII. Improved measurements of the proper motion of the Galactic globular cluster 47 Tucanae
F. Niederhofer, M. -R. L. Cioni, S. Rubele +10
We use deep multi-epoch PSF photometry taken with the Visible and Infrared Survey Telescope for Astronomy (VISTA) to measure and analyze the proper motions of stars within the Gala…
No Evidence for Chemical Abundance Variations in the Intermediate-age Cluster NGC 1783
Hao Zhang, Richard de Grijs, Chengyuan Li +1
We have analyzed multi-passband photometric observations, obtained with the {\it Hubble Space Telescope}, of the massive (), intermediate-age (1.8 Gyr-old)…
The NGC 7742 star cluster luminosity function: A population analysis revisited
Richard de Grijs, Chao Ma
We re-examine the properties of the star cluster population in the circumnuclear starburst ring in the face-on spiral galaxy NGC 7742, whose young cluster mass function has been re…
The VMC Survey - XXIV. Signatures of tidally stripped stellar populations from the inner Small Magellanic Cloud
Smitha Subramanian, Stefano Rubele, Ning-Chen Sun +12
We study the luminosity function of intermediate-age red-clump stars using deep, near-infrared photometric data covering 20 deg located throughout the central part of th…
The VMC Survey XXII. Hierarchical Star Formation in the 30 Doradus-N158-N159-N160 Star-Forming Complex
Ning-Chen Sun, Richard de Grijs, Smitha Subramanian +6
We study the hierarchical stellar structures in a 1.5 deg area covering the 30 Doradus-N158-N159-N160 star-forming complex with the VISTA Survey of the Magellanic Clouds.…
Young star clusters in circumnuclear starburst rings
Richard de Grijs, Chao Ma, Siyao Jia +2
We analyse the cluster luminosity functions (CLFs) of the youngest star clusters in three galaxies exhibiting prominent circumnuclear starburst rings. We focus specifically on NGC…
Lick Indices and Spectral Energy Distribution Analysis based on an M31 Star Cluster Sample: Comparisons of Methods and Models
Zhou Fan, Richard de Grijs, Bingqiu Chen +3
Application of fitting techniques to obtain physical parameters---such as ages, metallicities, and -element to iron ratios---of stellar populations is an important approach to u…
Clustering of Local Group distances: publication bias or correlated measurements? IV. The Galactic Center
Richard de Grijs, Giuseppe Bono
Aiming at deriving a statistically well-justified Galactic Center distance, , and reducing any occurrence of publication bias, we compiled the most comprehensive and most comp…
New open cluster Cepheids in the VVV survey tightly constrain near-infrared period--luminosity relations
Xiaodian Chen, Richard de Grijs, Licai Deng
Classical Cepheids are among the most useful Galactic and nearby extragalactic distance tracers because of their well-defined period--luminosity relations (PLRs). Open cluster (OC)…