publication . Article . Preprint . 2018

Ruprecht 106: A Riddle, Wrapped in a Mystery, inside an Enigma

Aaron Dotter; Antonino Milone; Charlie Conroy; Anna F. Marino; Ata Sarajedini;
Open Access English
  • Published: 21 Sep 2018 Journal: The Astrophysical Journal, volume 865, issue 1, page L10 (eissn: 2041-8213, Copyright policy)
  • Country: Italy
Abstract
Galactic globular clusters (GCs) show overwhelming photometric and spectroscopic evidence for the existence of multiple stellar populations. The question of whether or not there exists a GC that represents a true 'simple stellar population' remains open. Here we focus on Ruprecht 106 (R106), a halo GC with [Fe/H]=-1.5 and [alpha/Fe]~0. A previous spectroscopic study found no sign of the Na-O anticorrelation among 9 of its brightest red giants, which led to the conclusion that R106 is a true simple stellar population GC. Here we present new Hubble Space Telescope (HST) Wide Field Camera 3 photometry of R106 that, when combined with archival HST images spanning a ...
Persistent Identifiers
Subjects
arXiv: Astrophysics::Galaxy AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Solar and Stellar AstrophysicsAstrophysics::Earth and Planetary Astrophysics
free text keywords: Space and Planetary Science, Astronomy and Astrophysics, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies, globular clusters: individual (Ruprecht 106); stars: abundances; stars: evolution; Astronomy and Astrophysics; Space and Planetary Science, Art history, Physics
Funded by
EC| GALFOR
Project
GALFOR
The formation of the Galaxy: constraints from globular clusters
  • Funder: European Commission (EC)
  • Project Code: 716082
  • Funding stream: H2020 | ERC | ERC-STG
Validated by funder
Communities
Digital Humanities and Cultural Heritage
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