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The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters - IV. Helium content and relative age of multiple stellar populations within NGC 6352

Nardiello, Domenico; Piotto, G; Milone, Antonino; Marino, Anna; Bedin, L R; Anderson, Jay; Aparicio, A; Bellini, A; Cassisi, S; D'Antona, Francesca; Hidalgo, Sebastian L; Ortolani, Sergio; Pietrinferni, A; Renzini, Alvio; Salaris, M; van der Marel, R P; Vesperini, Enrico

Description

In this paper, we combine Wide Field Camera3/UVIS F275W, F336W, and F438W data from the 'UV Legacy Survey of Galactic Globular Clusters: Shedding Light on Their Populations and Formation' (GO 13297) Hubble Space Telescope Treasury programme with F606W, F625W, F658N, and F814WAdvanced Camera for Surveys archive data for a multiwavelength study of the globular cluster NGC 6352. In the colour-magnitude and two-colour diagrams obtained with appropriate combination of the photometry in the different...[Show more]

dc.contributor.authorNardiello, Domenico
dc.contributor.authorPiotto, G
dc.contributor.authorMilone, Antonino
dc.contributor.authorMarino, Anna
dc.contributor.authorBedin, L R
dc.contributor.authorAnderson, Jay
dc.contributor.authorAparicio, A
dc.contributor.authorBellini, A
dc.contributor.authorCassisi, S
dc.contributor.authorD'Antona, Francesca
dc.contributor.authorHidalgo, Sebastian L
dc.contributor.authorOrtolani, Sergio
dc.contributor.authorPietrinferni, A
dc.contributor.authorRenzini, Alvio
dc.contributor.authorSalaris, M
dc.contributor.authorvan der Marel, R P
dc.contributor.authorVesperini, Enrico
dc.date.accessioned2016-02-24T22:40:55Z
dc.identifier.issn0035-8711
dc.identifier.urihttp://hdl.handle.net/1885/98498
dc.description.abstractIn this paper, we combine Wide Field Camera3/UVIS F275W, F336W, and F438W data from the 'UV Legacy Survey of Galactic Globular Clusters: Shedding Light on Their Populations and Formation' (GO 13297) Hubble Space Telescope Treasury programme with F606W, F625W, F658N, and F814WAdvanced Camera for Surveys archive data for a multiwavelength study of the globular cluster NGC 6352. In the colour-magnitude and two-colour diagrams obtained with appropriate combination of the photometry in the different bands, we separate two distinct stellar populations and trace them from the main sequence to the subgiant, red giant, horizontal and asymptotic giant branches. We infer that the two populations differ in He by ΔY = 0.029 ± 0.006. With a new method, we also estimate the age difference between the two sequences. Assuming no difference in [Fe/H] and [α/Fe], and the uncertainties on ΔY, we found a difference in age between the two populations of 10 ± 120 Myr. If we assume [Fe/H] and [α/Fe] differences of 0.02 dex (well within the uncertainties of spectroscopic measurements), the total uncertainty in the relative age rises to ~300 Myr.
dc.publisherBlackwell Publishing Ltd
dc.rightsAuthor/s retain copyright
dc.sourceMonthly Notices of the Royal Astronomical Society
dc.titleThe Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters - IV. Helium content and relative age of multiple stellar populations within NGC 6352
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume451
dc.date.issued2015
local.identifier.absfor020100 - ASTRONOMICAL AND SPACE SCIENCES
local.identifier.ariespublicationU3488905xPUB5598
local.type.statusPublished Version
local.contributor.affiliationNardiello, Domenico, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationPiotto, G, Dipartimento di Astronomia
local.contributor.affiliationMilone, Antonino, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationMarino, Anna, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBedin, L R, INAF-Osservatorio Astronomico di Padova
local.contributor.affiliationAnderson, Jay, Space Telescope Science Institute
local.contributor.affiliationAparicio, A, Instituto de Astrofìsica de Canarias
local.contributor.affiliationBellini, A, Space Telescope Science Institute
local.contributor.affiliationCassisi, S, INAF-Observatorio Astronomico di Collurania
local.contributor.affiliationD'Antona, Francesca, INAF-Osservatorio Astronomico di Roma
local.contributor.affiliationHidalgo, Sebastian L, Instituto de Astrofísica de Canarias
local.contributor.affiliationOrtolani, Sergio, Universita di Padova
local.contributor.affiliationPietrinferni, A, INAF - Osservatorio Astronomico di Teramo
local.contributor.affiliationRenzini, Alvio, INAF-Osservatorio Astronomico di Padova
local.contributor.affiliationSalaris, M, Liverpool John Moores University
local.contributor.affiliationvan der Marel, R P, Space Telescope Science Institute
local.contributor.affiliationVesperini, Enrico, Indiana University
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage312
local.bibliographicCitation.lastpage322
local.identifier.doi10.1093/mnras/stv971
dc.date.updated2016-02-24T10:07:59Z
local.identifier.scopusID2-s2.0-84938239219
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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