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Related papers: A stellar census in globular clusters with MUSE: B…

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In this paper we have examined the internal dynamics of the globular cluster NGC 362. A V band surface brightness profile (SBP) was constructed from CCD images, and, after it was determined that the cluster is not post core-collapse, fit…

Astrophysics · Physics 2009-10-22 P. Fischer , D. L. Welch , M. Mateo , P. Côté

Blue straggler stars (BSS) are abundantly observed in all Galactic globular clusters (GGC) where data exist. However, observations alone cannot reveal the relative importance of various formation channels or the typical formation times for…

Solar and Stellar Astrophysics · Physics 2015-06-15 Sourav Chatterjee , Frederic A. Rasio , Alison Sills , Evert Glebbeek

Galactic globular clusters (GCs) are now known to host multiple populations displaying particular abundance variations. The different populations within a GC can be well distinguished following their position in the pseudo two-colors…

Solar and Stellar Astrophysics · Physics 2019-10-16 M. Latour , T. -O. Husser , B. Giesers , S. Kamann , F. Goettgens , S. Dreizler , J. Brinchmann , N. Bastian , M. Wendt , P. M. Weilbacher , N. S. Molinski

We have searched for visual binaries with projected separations in the range 200-3000 AU (0.1"-1.5") among a sample of 96 stars in the massive young NGC 6611 cluster, 60 of them being subsequently identified as high probability cluster…

Astrophysics · Physics 2009-11-07 G. Duchene , T. Simon , J. Eisloffel , J. Bouvier

We analyse color-magnitude diagrams of eight Globular Clusters (GCs) in the outer Galactic Halo. Images were taken with the Wide Field Channel of the Advanced Camera for Survey and the Ultraviolet and Visual Channel of the Wide Field Camera…

Solar and Stellar Astrophysics · Physics 2015-12-02 A. P. Milone , A. F. Marino , L. R. Bedin , A. Dotter , H. Jerjen , D. Kim , D. Nardiello , G. Piotto , J. Cong

A majority of massive stars are part of binary systems, a large fraction of which will inevitably interact during their lives. Binary-interaction products (BiPs), i.e. stars affected by such interaction, are expected to be commonly present…

A sample of 86 contact binary systems in 14 globular clusters with available color index data in (B-V) or in (V-I) has been analyzed. At least one third of all systems are numerous foreground Galactic Disk projections over long lines of…

Astrophysics · Physics 2009-10-31 Slavek M. Rucinski

This is the first of a series of papers presenting the results from our survey of 25 Galactic globular clusters with the MUSE integral-field spectrograph. In combination with our dedicated algorithm for source deblending, MUSE provides…

We used data from the HST UV Legacy Survey of Galactic Globular Clusters to select the Blue Straggler Star (BSS) population in four intermediate/high density systems (namely NGC 2808, NGC 6388, NGC 6541 and NGC 7078) through a "UV-guided…

Solar and Stellar Astrophysics · Physics 2017-04-26 S. Raso , F. R. Ferraro , E. Dalessandro , B. Lanzoni , D. Nardiello , A. Bellini , E. Vesperini

We have used a proper combination of multiband high-resolution {\it HST-WFPC2} and wide-field ground based observations to image the galactic globular cluster NGC 6266 (M62). The extensive photometric data set allows us to determine the…

Astrophysics · Physics 2008-11-26 G. Beccari , F. R. Ferraro , A. Possenti , E. Valenti , L. Origlia , R. T. Rood

We present the main-sequence binary (MSMS) Catalog derived from Gaia Data Release 3 BP/RP (XP) spectra. Leveraging the vast sample of low-resolution Gaia XP spectra, we develop a forward modeling approach that maps stellar mass and…

Galactic star clusters are known to harbour a significant amount of binary stars, yet their role in the dynamical evolution of the cluster as a whole is not comprehensively understood. We investigated the influence of binary stars on the…

Astrophysics of Galaxies · Physics 2022-05-11 L. Yalyalieva , G. Carraro , E. Glushkova , U. Munari , P. Ochner

We used a proper combination of multiband high-resolution and wide field multi-wavelength observations collected at three different telescopes (HST, LBT and CFHT) to probe Blue Straggler Star (BSS) populations in the globular cluster M53.…

Binary stars play a major role in determining the dynamic evolution of star clusters. We used images collected with the Hubble Space Telescope to study fourteen Magellanic Clouds star clusters that span an age interval between $\sim 0.6$…

In this work we study the rotational velocities of a sample of blue straggler stars (BSSs) and reference stars belonging to the Galactic globular cluster NGC 1851, using high-resolution spectra acquired with FLAMES-GIRAFFE at the ESO/VLT.…

Solar and Stellar Astrophysics · Physics 2026-01-14 Alex Billi , Lorenzo Monaco , Francesco R. Ferraro , Alessio Mucciarelli , Barbara Lanzoni , Mario Cadelano , Israel Trangolao

Due to their extreme helium abundance, the multiple stellar populations of the globular cluster NGC 2808 have been widely investigated from a photometric, spectroscopic, and kinematic perspective. The most striking feature of the…

Solar and Stellar Astrophysics · Physics 2016-08-11 Matteo Simioni , Antonino P. Milone , Luigi R. Bedin , Antonio Aparicio , Giampaolo Piotto , Enrico Vesperini , Jongsuk Hong

The Galactic globular cluster NGC 3201 is the first Galactic globular cluster observed to host dynamically-confirmed stellar-mass black holes, containing two confirmed and one candidate black hole. This result indicates that globular…

Context. The study of blue straggler stars (BSS) provides insight into the mechanisms of stellar mass exchange during binary stellar evolution and the complex gravitational interactions within dense stellar systems. In combination, they…

Solar and Stellar Astrophysics · Physics 2025-07-16 Francisco F. Carrasco-Varela , Prasanta K. Nayak , Thomas H. Puzia

A number of scenarios for the formation of multiple populations in globular clusters (GCs) predict that second generation (2G) stars form in a compact and dense subsystem embedded in a more extended first-generation (1G) system. If these…

For a sample of 38 Galactic globular clusters (GCs), we confront the observed distributions of blue straggler (BS) proper motions and masses (derived from isochrone fitting) from the BS catalog of Simunovic & Puzia with theoretical…