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Deep near-IR images from the VISTA Variables in the Via Lactea (VVV) Survey were used to search for RR Lyrae stars in the Southern Galactic plane. A sizable sample of 404 RR Lyrae of type ab stars was identified across a thin slice of the fourth Galactic quadrant (295 degrees < l < 350 degrees, -...


Minniti, D.Dékány, I.Majaess, D.Palma, T.Pullen, J.Rejkuba, M.Alonso-García, J.Catelan, M.Contreras Ramos, R.Gonzalez, O.A.Hempel, M.Irwin, M.lLucas, P.W.Saito, R.K.Tissera, P.Valenti, E.Zoccali, M.[Characterization of the VVV Survey RR Lyrae Population across the Southern Galactic Plane]Characterization of the VVV Survey RR Lyrae Population across the Southern Galactic Plane

We present deep near-infrared photometry and spectroscopy of the globular cluster 2MASS-GC 03 projected in the Galactic disc using MMT and Magellan Infrared Spectrograph on the Clay Telescope (Las Campanas Observatory) and VISTA Variables in the Via Lactea Survey data. Most probable cluster membe...


Carballo-Bello, Julio A.Ramírez Alegría, S.Borissova, J.Smith, L. C.Kurtev, R.Lucas, P. W.Moni Bidin, Ch.Alonso-García, J.Minniti, D.Palma, T.Dékány, I.Medina, N.Moyano, M.Villanueva, V.Kuhn, M. A.[Near-infrared photometry and spectroscopy of the low Galactic latitude globular cluster 2MASS-GC 03]Near-infrared photometry and spectroscopy of the low Galactic latitude globular cluster 2MASS-GC 03

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

The purpose of this research is to study the connections of the global properties of eight young stellar clusters projected in the Vista Variables in the Via Lactea (VVV) ESO Large Public Survey disk area and their young stellar object (YSO) populations. The analysis is based on the combination o...


Borissova, J.Ramírez Alegría, S.Alonso, J.Lucas, P. W.Kurtev, R.Medina, N.Navarro, C.Kuhn, M.Gromadzki, M.Retamales, G.Fernandez, M. A.Agurto-Gangas, C.Chené, A.-N.Minniti, D.Contreras Pena, C.Catelan, M.Decany, I.Thompson, M. A.Morales, E. F. E.Amigo, P.[YOUNG STELLAR CLUSTERS CONTAINING MASSIVE YOUNG STELLAR OBJECTS IN THE VVV SURVEY]YOUNG STELLAR CLUSTERS CONTAINING MASSIVE YOUNG STELLAR OBJECTS IN THE VVV SURVEY

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

This paper is based on observations made with ESO telescopes at the La Silla Paranal Observatory under program ID 092.B-0104(A). We have made extensive use of the SIMBAD Database at CDS (Centre de Données astronomiques) Strasbourg, the NASA/IPAC Extragalactic Database (NED), which is operated by ...


Ivanov, V.D.Piatti, A.E.Beamín, J.-C.Minniti, D.Borissova, J.Kurtev, R.Hempel, M.Saito, R.K.[Candidate star clusters toward the inner Milky Way discovered on deep-stacked KS-band images from the VVV Survey]Candidate star clusters toward the inner Milky Way discovered on deep-stacked KS-band images from the VVV Survey

In this work, we make use of DR14 APOGEE spectroscopic data to study a sample of 92 known OB stars. We developed a near-infrared semi-empirical spectral classification method that was successfully used in case of four new exemplars, previously classified as later B-type stars. Our results agree w...


Roman-Lopes, A.Román-Zúñiga, C.Tapia, M.Chojnowski, D.Gómez Maqueo Chew, Y.García-Hernández, D.A.Borissova, J.Minniti, D.Covey, K.R.Longa-Peña, P.Fernandez-Trincado, J.G.Zamora, O.Nitschelm, C.[Massive stars in the SDSS-IV/APOGEE SURVEY. I. OB stars]Massive stars in the SDSS-IV/APOGEE SURVEY. I. OB stars

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

D'Orazi, V.Magurno, D.Bono, G.Matsunaga, N.Braga, V.F.Elgueta, S.S.Fukue, K.Hamano, S.Inno, L.Kobayashi, N.Kondo, S.Monelli, M.Nonino, M.Przybilla, N.Sameshima, H.Saviane, I.Taniguchi, D.Thevenin, F.Urbaneja-Perez, M.Watase, A.Arai, A.Bergemann, M.Buonanno, R.Dall'Ora, M.Da Silva, R.Fabrizio, M.Ferraro, I.Fiorentino, G.Francois, P.Gilmozzi, R.Iannicola, G.Ikeda, Y.Jian, M.Kawakita, H.Kudritzki, R.P.Lemasle, B.Marengo, M.Marinoni, S.Martínez-Vázquez, C.E.Minniti, D.Neeley, J.Otsubo, S.Prieto, J.L.Proxauf, B.Romaniello, M.Sanna, N.Sneden, C.Takenaka, K.Tsujimoto, T.Valenti, E.Yasui, C.Yoshikawa, T.Zoccali, M.[On the Chemical Abundances of Miras in Clusters: V1 in the Metal-rich Globular NGC 5927]On the Chemical Abundances of Miras in Clusters: V1 in the Metal-rich Globular NGC 5927

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