On the Chemical Abundances of Miras in Clusters: V1 in the Metal-rich Globular NGC 5927

Vista sencilla de ítem
dc.contributor.authorD'Orazi, V.
dc.contributor.authorMagurno, D.
dc.contributor.authorBono, G.
dc.contributor.authorMatsunaga, N.
dc.contributor.authorBraga, V.F.
dc.contributor.authorElgueta, S.S.
dc.contributor.authorFukue, K.
dc.contributor.authorHamano, S.
dc.contributor.authorInno, L.
dc.contributor.authorKobayashi, N.
dc.contributor.authorKondo, S.
dc.contributor.authorMonelli, M.
dc.contributor.authorNonino, M.
dc.contributor.authorPrzybilla, N.
dc.contributor.authorSameshima, H.
dc.contributor.authorSaviane, I.
dc.contributor.authorTaniguchi, D.
dc.contributor.authorThevenin, F.
dc.contributor.authorUrbaneja-Perez, M.
dc.contributor.authorWatase, A.
dc.contributor.authorArai, A.
dc.contributor.authorBergemann, M.
dc.contributor.authorBuonanno, R.
dc.contributor.authorDall'Ora, M.
dc.contributor.authorDa Silva, R.
dc.contributor.authorFabrizio, M.
dc.contributor.authorFerraro, I.
dc.contributor.authorFiorentino, G.
dc.contributor.authorFrancois, P.
dc.contributor.authorGilmozzi, R.
dc.contributor.authorIannicola, G.
dc.contributor.authorIkeda, Y.
dc.contributor.authorJian, M.
dc.contributor.authorKawakita, H.
dc.contributor.authorKudritzki, R.P.
dc.contributor.authorLemasle, B.
dc.contributor.authorMarengo, M.
dc.contributor.authorMarinoni, S.
dc.contributor.authorMartínez-Vázquez, C.E.
dc.contributor.authorMinniti, D.
dc.contributor.authorNeeley, J.
dc.contributor.authorOtsubo, S.
dc.contributor.authorPrieto, J.L.
dc.contributor.authorProxauf, B.
dc.contributor.authorRomaniello, M.
dc.contributor.authorSanna, N.
dc.contributor.authorSneden, C.
dc.contributor.authorTakenaka, K.
dc.contributor.authorTsujimoto, T.
dc.contributor.authorValenti, E.
dc.contributor.authorYasui, C.
dc.contributor.authorYoshikawa, T.
dc.contributor.authorZoccali, M.
dc.date.accessioned2018-09-25T12:42:10Z
dc.date.available2018-09-25T12:42:10Z
dc.date.issued2018-03
dc.descriptionIndexación: Scopus.es_ES
dc.description.abstractWe present the first spectroscopic abundance determination of iron, α-elements (Si, Ca, and Ti), and sodium for the Mira variable V1 in the metal-rich globular cluster NGC 5927. We use high-resolution (R ∼ 28,000), high signal-to-noise ratio (∼200) spectra collected with WINERED, a near-infrared (NIR) spectrograph covering simultaneously the wavelength range 0.91-1.35 μm. The effective temperature and the surface gravity at the pulsation phase of the spectroscopic observation were estimated using both optical (V) and NIR time-series photometric data. We found that the Mira is metal-rich ([Fe/H] = -0.55 ± 0.15) and moderately α-enhanced ([α/Fe] = 0.15 ± 0.01, σ = 0.2). These values agree quite well with the mean cluster abundances based on high-resolution optical spectra of several cluster red giants available in the literature ([Fe/H] = - 0.47 ± 0.06, [α/Fe] = + 0.24 ± 0.05). We also found a Na abundance of +0.35 ±0.20 that is higher than the mean cluster abundance based on optical spectra (+0.18 ± 0.13). However, the lack of similar spectra for cluster red giants and that of corrections for departures from local thermodynamical equilibrium prevents us from establishing whether the difference is intrinsic or connected with multiple populations. These findings indicate a strong similarity between optical and NIR metallicity scales in spite of the difference in the experimental equipment, data analysis, and in the adopted spectroscopic diagnostics. © 2018. The American Astronomical Society. All rights reserved.es_ES
dc.description.urihttp://iopscience.iop.org/article/10.3847/2041-8213/aab100/meta
dc.identifier.citationAstrophysical Journal Letters, 855(1), art. no. L9.es_ES
dc.identifier.issn2041-8205
dc.identifier.otherDOI: 10.3847/2041-8213/aab100
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/7048
dc.language.isoenes_ES
dc.publisherInstitute of Physics Publishinges_ES
dc.subjectGlobular clusters: individual (NGC 5927)es_ES
dc.subjectStars: abundanceses_ES
dc.subjectStars: variables: generales_ES
dc.titleOn the Chemical Abundances of Miras in Clusters: V1 in the Metal-rich Globular NGC 5927es_ES
dc.typeArtículoes_ES
Archivos
Bloque original
Mostrando 1 - 1 de 1
Miniatura
Nombre:
D’Orazi_On_the_chemical_Abundances.pdf
Tamaño:
500.49 KB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO COMPLETO EN INGLES
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista