Stellar density profile and mass of the Milky Way bulge from VVV data

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dc.contributor.authorValenti, E.
dc.contributor.authorZoccali, M.
dc.contributor.authorGonzalez, O. A.
dc.contributor.authorMinniti, D.
dc.contributor.authorAlonso-García, J.
dc.contributor.authorMarchetti, E.
dc.contributor.authorHempel, M.
dc.contributor.authorRenzini, A.
dc.contributor.authorRejkuba, M.
dc.date.accessioned2017-08-18T15:52:38Z
dc.date.available2017-08-18T15:52:38Z
dc.date.issued2016-03
dc.descriptionIndexación: Web of Science; Scopus.es_CL
dc.description.abstractWe present the first stellar density profile of the Milky Way bulge that reaches latitude b = 0 degrees. The profile was derived by counting red clump stars within the colour-magnitude diagram that was constructed using the new PSF-fitting photometry from VISTA Variables in the Via Lactea (VVV) survey data. The new stellar density map covers the area between vertical bar l vertical bar <= 10 degrees and vertical bar b vertical bar <= 45 degrees with unprecedented accuracy, allowing the stellar kinematics from the Giraffe Inner Bulge Spectroscopic Survey (GIBS) to be linked to the stellar mass density distribution. In particular, the location of the central velocity-dispersion peak from GIBS matches a high over-density in the VVV star count map. By scaling the total luminosity function (LF) obtained from all VVV fields to the LF from Zoccali et al.(2003), we obtain the first fully empirical estimate of the mass in stars and in remnants of the Galactic bulge. Within (vertical bar b vertical bar < 9.5 degrees, vertical bar l vertical bar < 10 degrees), the Milky Way bulge stellar mass is 2.0 +/- 0.3 x 10(10) M-circle dot..es_CL
dc.description.urihttps://www.aanda.org/articles/aa/abs/2016/03/aa27500-15/aa27500-15.html
dc.identifier.citationAstronomy and Astrophysics Volume 587, 1 March 2016, Article number L6es_CL
dc.identifier.issn1432-0746
dc.identifier.otherhttps://doi.org/10.1051/0004-6361/201527500
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/3974
dc.language.isoenes_CL
dc.publisherEDP SCIENCESes_CL
dc.subjectGalaxy: structurees_CL
dc.subjectGalaxy: bulgees_CL
dc.titleStellar density profile and mass of the Milky Way bulge from VVV dataes_CL
dc.typeArtículoes_CL
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