Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28347
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Monelli, M. | en_US |
dc.contributor.author | Walker, A. R. | en_US |
dc.contributor.author | Martínez-Vázquez, C. E. | en_US |
dc.contributor.author | Stetson, P. B. | en_US |
dc.contributor.author | Gallart, C. | en_US |
dc.contributor.author | Bernard, E. J. | en_US |
dc.contributor.author | Bono, G. | en_US |
dc.contributor.author | Vivas, A. K. | en_US |
dc.contributor.author | ANDREUZZI, Gloria | en_US |
dc.contributor.author | DALL'ORA, Massimo | en_US |
dc.contributor.author | FIORENTINO, Giuliana | en_US |
dc.contributor.author | Dorta, A. | en_US |
dc.date.accessioned | 2020-11-16T11:05:10Z | - |
dc.date.available | 2020-11-16T11:05:10Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28347 | - |
dc.description.abstract | We present a search and analysis of variable stars in the recently discovered Crater II dwarf galaxy. Based on B, V, I data collected with the Isaac Newton Telescope (FoV∼0.44 deg<SUP>2</SUP>), we detected 37 variable stars, of which 34 are bone-fide RR Lyrae stars of Crater II (28 RRab, 4 RRc, 2 RRd). We applied the metal-independent (V, B - V) Period-Wesenheit relation and derived a true distance modulus (μ = 20.30 ± 0.08 mag (σ = 0.16 mag). Individual metallicities for RR Lyrae stars were derived by inversion of the predicted I-band Period-Luminosity relation. We find a mean metallicity of [Fe/H] = -1.64 and a standard deviation of σ _{[Fe/H]}=0.21 dex, compatible with either negligible or vanishing intrinsic metallicity dispersion. The analysis of the colour-magnitude diagram reveals a stark paucity of blue horizontal branch stars, at odds with other Galactic dwarfs, and globular clusters with similar metal abundances. | en_US |
dc.language.iso | eng | en_US |
dc.title | Variable stars in local group galaxies - IV. RR Lyrae stars in the central regions of the low-density galaxy Crater II | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/sty1645 | en_US |
dc.identifier.scopus | 2-s2.0-85051467991 | en_US |
dc.identifier.isi | 000441383700001 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article-abstract/479/4/4279/5046475?redirectedFrom=fulltext | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 479 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 4279 | en_US |
dc.relation.lastpage | 4291 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2018MNRAS.479.4279M | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.orcid | 0000-0001-5125-6397 | - |
crisitem.author.orcid | 0000-0001-8209-0449 | - |
crisitem.author.orcid | 0000-0003-0376-6928 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
sty1645.pdf | Pdf editoriale | 1.63 MB | Adobe PDF | View/Open |
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