Fast rotating blue stragglers prefer loose clusters

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dc.contributor.authorFerraro, Francesco R
dc.contributor.authorMucciarelli, Alessio
dc.contributor.authorLanzoni, Barbara
dc.contributor.authorPallanca, Cristina
dc.contributor.authorCadelano, Mario
dc.contributor.authorBilli, Alex
dc.contributor.authorSills, Alison
dc.contributor.authorVesperini, Enrico
dc.contributor.authorDalessandro, Emanuele
dc.contributor.authorBeccari, Giacomo
dc.contributor.authorMonaco, Lorenzo
dc.contributor.authorMateo, Mario
dc.date.accessioned2025-03-12T18:21:42Z
dc.date.available2025-03-12T18:21:42Z
dc.date.issued0023-12
dc.descriptionINDEXACION SCOPUS
dc.description.abstractBlue stragglers are anomalously luminous core hydrogen-burning stars formed through mass-transfer in binary/triple systems and stellar collisions. Their physical and evolutionary properties are largely unknown and unconstrained. Here we analyze 320 high-resolution spectra of blue stragglers collected in eight galactic globular clusters with different structural characteristics and show evidence that the fraction of fast rotating blue stragglers (with rotational velocities larger than 40 km/s) increases for decreasing central density of the host system. This trend suggests that fast spinning blue stragglers prefer low-density environments and promises to open an unexplored route towards understanding the evolutionary processes of these stars. Since large rotation rates are expected in the early stages of both formation channels, our results provide direct evidence for recent blue straggler formation activity in low-density environments and put strong constraints on the timescale of the collisional blue straggler slow-down processes. © 2023, The Author(s).
dc.identifier.doi10.1038/s41467-023-38153-w
dc.identifier.issn20411723
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/63749
dc.language.isoen
dc.publisherNature Research
dc.rights.licenseCC BY LICENSE
dc.subjectcluster analysis; spectrum; timescale
dc.titleFast rotating blue stragglers prefer loose clusters
dc.typeArtículo
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