Descubre y comparte nuestro conocimiento público

Se han encontrado 20 recursos

Resultados de búsqueda

We completed the search for microlensing events in the zero latitude area of the Galactic bulge using the VVV Survey near-infrared (near-IR) data obtained between 2010 and 2015. We have now a total sample of N = 630 events Using the near-IR color-magnitude diagram we selected the red clump (RC) s...


Navarro, M.G.Minniti, D.Contreras-Ramos, R.[VVV Survey Microlensing: The Galactic Longitude Dependence]VVV Survey Microlensing: The Galactic Longitude Dependence

A.R.B., P.d.L., and V.H. acknowledge financial support form the ANR 14-CE33-014-01. This work was partly supported by the European Union FP7 programme through ERC grant number 320360 and by the Leverhulme Trust through grant RPG-2012-541. We acknowledge the support from INAF and Ministero dell'Is...


Recio-Blanco, A.Rojas-Arriagada, A.de Laverny, P.Mikolaitis, S.Hill, V.Zoccali, M.Fernández-Trincado, J. G.Robin, A. C.Babusiaux, C.Gilmore, G.Randich, S.Alfaro, E.C., Allende PrietoBragaglia, A.Carraro, G.Jofré, P.Lardo, C.Monaco, L.Morbidelli, L.Zaggia, S.[The Gaia-ESO Survey: Low-α element stars in the Galactic bulge]The Gaia-ESO Survey: Low-α element stars in the Galactic bulge

Context. The globular cluster HP 1 is projected at only 3.̊33 from the Galactic center. Together with its distance, this makes it one of the most central globular clusters in the Milky Way. It has a blue horizontal branch (BHB) and a metallicity of [Fe/H] ≈ −1.0. This means that it probably is on...


Barbuy, B.Cantelli, E.Vemado, A.Ernandes, H.Ortolani, S.Saviane, I.Bica, E.Minniti, D.Dias, B.Momany, Y.Hill, V.Zoccali, M.Siqueira-Mello, C.[High-resolution abundance analysis of red giants in the metal-poor bulge globular cluster HP 1]High-resolution abundance analysis of red giants in the metal-poor bulge globular cluster HP 1

We analyze the kinematics of similar to 2000 giant stars in the direction of the Galactic bulge, extracted from the Gaia-ESO survey in the region -10 degrees less than or similar to l less than or similar to 10 degrees and -11 degrees less than or similar to b less than or similar to -3 degrees. ...


Williams, Angus A.Evans, N. W.Molloy, MatthewKordopatis, GeorgesSmith, M. C.Shen, J.Gilmore, G.Randich, S.Bensby, T.Francois, P.Koposov, S.E.Recio-Blanco, A.Bayo, A.Carraro, G.Casey, A.Costado, T.Franciosini, E.Hourihane, A.de Laverny, P.Lewis, J.Lind, K.Magrini, L.Monaco, L.Morbidelli, L.Sacco, G. GWorley, C.Zaggia, S.Mikolaitis, Š.[THE GAIA-ESO SURVEY: METAL-RICH BANANAS IN THE BULGE]THE GAIA-ESO SURVEY: METAL-RICH BANANAS IN THE BULGE

Multiple populations revealed in globular clusters (GCs) are important windows to the formation and evolution of these stellar systems. The metal-rich GCs in the Galactic bulge are an indispensable part of this picture, but the high optical extinction in this region has prevented extensive resear...


Tang, BCohen, REGeisler, DSchiavon, RPMajewski, SRVillanova, SCarrera, RZamora, OGarcia-Hernandez, DAShetrone, MFrinchaboy, PMeza, AFernandez-Trincado, JGMunoz, RRLin, CCLane, RRNitschelm, CPan, KBizyaev, DOravetz, DSimmons, A[Two groups of red giants with distinct chemical abundances in the bulge globular cluster NGC 6553 through the eyes of APOGEE]Two groups of red giants with distinct chemical abundances in the bulge globular cluster NGC 6553 through the eyes of APOGEE

Aims. The aim of this work is the study of abundances of the heavy elements Ba, La, Ce, Nd, and Eu in 56 bulge giants (red giant branch and red clump) with metallicities ranging from 1 : 3 dex to 0 : 5 dex. Methods. We obtained high-resolution spectra of our giant stars using the FLAMES-UVES sp...


Van der Swaelmen, MBarbuy, BHill, VZoccali, MMinniti, DOrtolani, SGomez, A[Heavy elements Ba, La, Ce, Nd, and Eu in 56 Galactic bulge red giants]Heavy elements Ba, La, Ce, Nd, and Eu in 56 Galactic bulge red giants

Context. Our view of the structure of the Milky Way and, in particular, its bulge is obscured by the intervening stars, dust, and gas in the disc. While great progress in understanding the bulge has been achieved with past and ongoing observations, the comparison of its global chemodynamical prop...


Gonzalez, O. A.Gadotti, D. A.Debattista, V. P.Rejkuba, M.Valenti, E.Zoccali, M.Coccato, L.Minniti, D.Ness, M.[Comparing the properties of the X-shaped bulges of NGC 4710 and the Milky Way with MUSE]Comparing the properties of the X-shaped bulges of NGC 4710 and the Milky Way with MUSE

Context. The inner regions of the Galaxy are severely affected by extinction, which limits our capability to study the stellar populations present there. The Vista Variables in the Vía Láctea (VVV) ESO Public Survey has observed this zone at near-infrared wavelengths where reddening is highly dim...


Alonso-García, J.Saito, R.K.Hempel, M.Minniti, D.Pullen, J.Catelan, M.Ramos, R.C.Cross, N.J.G.Gonzalez, O.A.Lucas, P.W.Palma, T.Valenti, E.Zoccali, M.[Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk]Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk

Context. Type II Cepheids (T2Cs) are radially pulsating variables that trace old stellar populations and provide distance estimates through their period-luminosity (PL) relation. Aims. We trace the structure of old stellar population in the Galactic bulge using new distance estimates and kinemati...


Braga, V.F.Bhardwaj, A.Contreras Ramos, R.Minniti, D.Bono, G.De Grijs, R.Minniti, J.H.Rejkuba, M.[Structure and kinematics of Type II Cepheids in the Galactic bulge based on near-infrared VVV data]Structure and kinematics of Type II Cepheids in the Galactic bulge based on near-infrared VVV data

Context. Oxygen and zinc in the Galactic bulge are key elements for the understanding of the bulge chemical evolution. Oxygen-to-iron abundance ratios provide a most robust indicator of the star formation rate and chemical evolution of the bulge. Zinc is enhanced in metal-poor stars, behaving as ...


Da Silveira, C.R.Barbuy, B.Friaça, A.C.S.Hill, V.Zoccali, M.Rafelski, M.Gonzalez, O.A.Minniti, D.Renzini, A.Ortolani, S.[Oxygen and zinc abundances in 417 Galactic bulge red giants]Oxygen and zinc abundances in 417 Galactic bulge red giants

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso