We report the discovery of eight new giant planets, and updated orbits for four known planets, orbiting dwarf and subgiant stars using the CORALIE, HARPS, and MIKE instruments as part of the Calan-Hertfordshire Extrasolar Planet Search. The planets have masses in the range 1.1-5.4 MJ's, orbital p...
Jenkins, J.S.
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Jones, H.R.A.
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Tuomi, M.
,
Díaz, M.
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Cordero, J.P.
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Aguayo, A.
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Pantoja, B.
,
Arriagada, P.
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Mahu, R.
,
Brahm, R.
,
Rojo, P.
,
Soto, M.G.
,
Ivanyuk, O.
,
Becerra Yoma, N.
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Day-Jones, A.C.
,
Ruiz, M.T.
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Pavlenko, Y.V.
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Barnes, J.R.
,
Murgas, F.
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Pinfield, D.J.
,
Jones, M.I.
,
López-Morales, M.
,
Shectman, S.
,
Butler, R.P.
,
Minniti, D.
,
[New planetary systems from the Calan-Hertfordshire Extrasolar planet search]
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New planetary systems from the Calan-Hertfordshire Extrasolar planet search
In a companion work (Paper I), we detected a large population of highly variable Young Stellar Objects (YSOs) in the Vista Variables in the Via Lactea (VVV) survey, typically with class I or flat spectrum spectral energy distributions and diverse light-curve types. Here we present infrared spectr...
Contreras Peña, C.
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Lucas, P.W.
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Kurtev, R.
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Minniti, D.
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Caratti o Garatti, A.
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Marocco, F.
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Thompson, M.A.
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Froebrich, D.
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Kumar, M.
,
Stimson, W.
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Navarro Molina, C.
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Borissova, J.
,
Gledhill, T.
,
Terzi, R.
,
[Infrared spectroscopy of eruptive variable protostars from VVV]
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Infrared spectroscopy of eruptive variable protostars from VVV
Context. In the last six years, the VISTA Variable in the Vía Láctea (VVV) survey mapped 562 sq. deg. across the bulge and southern disk of the Galaxy. However, a detailed study of these regions, which includes ∼36 globular clusters (GCs) and thousands of open clusters is by no means an easy chal...
Contreras Ramos, R.
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Zoccali, M.
,
Rojas, F.
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Rojas-Arriagada, A.
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Gárate, M.
,
Huijse, P.
,
Gran, F.
,
Soto, M.
,
Valcarce, A.A.R.
,
Estévez, P.A.
,
Minniti, D.
,
[Proper motions in the VVV Survey: Results for more than 15 million stars across NGC 6544]
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Proper motions in the VVV Survey: Results for more than 15 million stars across NGC 6544
Interstellar 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 ca...
Alonso-García, J.
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Minniti, D.
,
Catelan, M.
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Contreras Ramos, R.
,
Gonzalez, O.A.
,
Hempel, M.
,
Lucas, P.W.
,
Saito, R.K.
,
Valenti, E.
,
Zoccali, M.
,
[Extinction ratios in the inner Galaxy as revealed by the VVV survey]
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Extinction ratios in the inner Galaxy as revealed by the VVV survey
It is likely that a number of Galactic globular clusters remain to be discovered, especially toward the Galactic bulge. High stellar density combined with high and differential interstellar reddening are the two major problems for finding globular clusters located toward the bulge. We use the dee...
Minniti, D.
,
Geisler, D.
,
Alonso-Garcia, J.
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Palma, T.
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Beamin, J.C.
,
Borissova, J.
,
Catelan, M.
,
Clariá, J.J.
,
Cohen, R.E.
,
Ramos, R.C.
,
Dias, B.
,
Fernández-Trincado, J.G.
,
Gómez, M.
,
Hempel, M.
,
Ivanov, V.D.
,
Kurtev, R.
,
Lucas, P.W.
,
Moni-Bidin, C.
,
Pullen, J.
,
Alegria, S.R.
,
Saito, R.K.
,
Valenti, E.
,
[New VVV Survey Globular Cluster Candidates in the Milky Way Bulge]
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New VVV Survey Globular Cluster Candidates in the Milky Way Bulge
We find two chemically distinct populations separated relatively cleanly in the [Fe/H]-[Mg/Fe] plane, but also distinguished in other chemical planes, among metal-poor stars (primarily with metallicities [Fe H] < -0.9) observed by the Apache Point Observatory Galactic Evolution Experiment (APOGEE...
Hayes, C.R.
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Majewski, S.R.
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Shetrone, M.
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Fernández-Alvar, E.
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Prieto, C.A.
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Schuster, W.J.
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Carigi, L.
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Cunha, K.
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Smith, V.V.
,
Sobeck, J.
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Almeida, A.
,
Beers, T.C.
,
Carrera, R.
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Fernández-Trincado, J.G.
,
García-Hernández, D.A.
,
Geisler, D.
,
Lane, R.R.
,
Lucatello, S.
,
Matthews, A.M.
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Minniti, D.
,
Nitschelm, C.
,
Tang, B.
,
Tissera, P.B.
,
Zamora, O.
,
[Disentangling the Galactic Halo with APOGEE. I. Chemical and Kinematical Investigation of Distinct Metal-poor Populations]
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Disentangling the Galactic Halo with APOGEE. I. Chemical and Kinematical Investigation of Distinct Metal-poor Populations
We report the first estimate of the He abundance of the population of RR Lyrae stars in the Galactic bulge. This is done by comparing the recent observational data with the latest models. We use the large samples of ab-type RR Lyrae stars found by OGLE IV in the inner bulge and by the VVV survey ...
Marconi, M.
,
Minniti, D.
,
[Gauging the Helium Abundance of the Galactic Bulge RR Lyrae Stars]
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Gauging the Helium Abundance of the Galactic Bulge RR Lyrae Stars
In a framework where galaxies form hierarchically, extended stellar haloes are predicted to be an ubiquitous feature around Milky Way-like galaxies and to consist mainly of the shredded stellar component of smaller galactic systems. The type of accreted stellar systems are expected to vary accord...
Battaglia, G.
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North, P.
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Jablonka, P.
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Shetrone, M.
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Minniti, D.
,
Díaz, M.
,
Starkenburg, E.
,
Savoy, M.
,
[What is the Milky Way outer halo made of?: High resolution spectroscopy of distant red giants]
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What is the Milky Way outer halo made of?: High resolution spectroscopy of distant red giants
We search for microlensing events in the highly reddened areas surrounding the Galactic center using the near-IR observations with the VISTA Variables in the Vía Láctea Survey (VVV). We report the discovery of 182 new microlensing events, based on observations acquired between 2010 and 2015. We p...
Navarro, M.G.
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Minniti, D.
,
Ramos, R.C.
,
[VVV Survey Microlensing Events in the Galactic Center Region]
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VVV Survey Microlensing Events in the Galactic Center Region
We search for extragalactic sources in the VISTA Variables in the Vía Láctea survey that are hidden by the Galaxy. Herein, we describe our photometric procedure to find and characterize extragalactic objects using a combination of SExtractor and PSFEx. It was applied in two tiles of the survey: d...
Baravalle, L.D.
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Alonso, M.V.
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Castellón, J.L.N.
,
Beamín, J.C.
,
Minniti, D.
,
[Searching for extragalactic sources in the VISTA variables in the Via láctea survey]
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Searching for extragalactic sources in the VISTA variables in the Via láctea survey