Extinction ratios in the inner Galaxy as revealed by the VVV survey

Vista sencilla de ítem
dc.contributor.authorAlonso-García, J.
dc.contributor.authorMinniti, D.
dc.contributor.authorCatelan, M.
dc.contributor.authorContreras Ramos, R.
dc.contributor.authorGonzalez, O.A.
dc.contributor.authorHempel, M.
dc.contributor.authorLucas, P.W.
dc.contributor.authorSaito, R.K.
dc.contributor.authorValenti, E.
dc.contributor.authorZoccali, M.
dc.date.accessioned2018-04-30T20:34:22Z
dc.date.available2018-04-30T20:34:22Z
dc.date.issued2017-11
dc.descriptionIndexación: Scopus; Arxives_ES
dc.description.abstractInterstellar extinction toward the Galactic Center (GC) is large and significantly differential. Its reddening and dimming effects in red clump (RC) stars in the Galactic Bulge can be exploited to better constrain the extinction law toward the innermost Galaxy. By virtue of a deep and complete catalog of more than 30 million objects at |l| ≤ 2°.7 and |b| ≤ 1°.55 obtained from VVV survey observations, we apply the RC method to infer the selective-to-total extinction ratios in the Z, Y, J, H, and Ks broadband near-infrared filters. The measured values are smaller than previously reported, and are not constant, with mean values of, e.g., AKS /E(J - Ks) = 0.428 ± 0.005 ± 0.04 and AKS/ E(H Ks) = 1.104 ± 0.022 ± 0.2. We also obtain a ratio AZ:AY:AJ:AH:AKS of 7.74:5.38:3.30:1.88:1.0, implying extinction toward the GC to follow a distribution as a function of wavelength steeper than previously reported, consistent with a power law Aλ ∝ λ -2.47 in the near-infrared.es_ES
dc.description.urihttps://arxiv.org/abs/1710.04854?
dc.description.urihttp://iopscience.iop.org/article/10.3847/2041-8213/aa92c3/meta
dc.identifier.citationAstrophysical Journal Letters, 849(1), art. no. L13.es_ES
dc.identifier.issn2041-8205
dc.identifier.otherDOI: 10.3847/2041-8213/aa92c3
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/5686
dc.language.isoenes_ES
dc.publisherInstitute of Physics Publishinges_ES
dc.subjectDust, extinctiones_ES
dc.subjectGalaxy: centeres_ES
dc.subjectInfrared: ISMes_ES
dc.titleExtinction ratios in the inner Galaxy as revealed by the VVV surveyes_ES
dc.typeArtículoes_ES
Archivos
Bloque original
Mostrando 1 - 1 de 1
Miniatura
Nombre:
Alonso-Garcia_J_Extinction_Ratios_in.pdf
Tamaño:
2.16 MB
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