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Article 2018-10

Autor: Lemasle, B. Hajdu, G. Kovtyukh, V. Inno, L. Grebel, E.K. Catelan, M. Bono, G. François, P. Kniazev, A. Da Silva, R. Storm, J.

Context. The ratio of the first overtone (1O)/fundamental (F) periods of mixed-mode Cepheids that pulsate simultaneously in these two modes (F/1O) is metallicity-dependent. It can therefore be used to characterize the systems that host such variable stars. Aims. We want to take advantage of the F...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/11499

Repositorio Universidad Andrés Bello
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Lemasle, B. ,  Hajdu, G. ,  Kovtyukh, V. ,  Inno, L. ,  Grebel, E.K. ,  Catelan, M. ,  Bono, G. ,  François, P. ,  Kniazev, A. ,  Da Silva, R. ,  Storm, J. ,  [Milky Way metallicity gradient from Gaia DR2 F/1O double-mode Cepheids] ,  Milky Way metallicity gradient from Gaia DR2 F/1O double-mode Cepheids
Article 2018-09

Autor: Medina, N. Borissova, J. Bayo, A. Kurtev, R. Navarro Molina, C. Kuhn, M. Kumar, N. Lucas, P.W. Catelan, M. Minniti, D. Smith, L.C.

Time-varying phenomena are one of the most substantial sources of astrophysical information, and their study has led to many fundamental discoveries in modern astronomy. We have developed an automated tool to search for and analyze variable sources in the near-infrared K s band using the data fro...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/11126

Repositorio Universidad Andrés Bello
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Medina, N. ,  Borissova, J. ,  Bayo, A. ,  Kurtev, R. ,  Navarro Molina, C. ,  Kuhn, M. ,  Kumar, N. ,  Lucas, P.W. ,  Catelan, M. ,  Minniti, D. ,  Smith, L.C. ,  [An Automated Tool to Detect Variable Sources in the Vista Variables in the Vía Láctea Survey: The VVV Variables (V4) Catalog of Tiles d001 and d002] ,  An Automated Tool to Detect Variable Sources in the Vista Variables in the Vía Láctea Survey: The VVV Variables (V4) Catalog of Tiles d001 and d002
Article 2015-12

Autor: Gieren, W. Pilecki, B. Pietrzyński, G. Graczyk, D. Udalski, A. Soszyński, I. Thompson, I.B. Moroni, P.G.P. Smolec, R. Konorski, P. Górski, M. Karczmarek, P. Suchomska, K. Taormina, M. Gallenne, A. Storm, J. Bono, G. Catelan, M. Szymański, M. Kozłowski, S. Pietrukowicz, P. Wyrzykowski, Ł. Poleski, R. Skowron, J. Minniti, D. Ulaczyk, K. Mróz, P. Pawlak, M. Nardetto, N.

We present a detailed study of the classical Cepheid in the double-lined, highly eccentric eclipsing binary system OGLE-LMC562.05.9009. The Cepheid is a fundamental mode pulsator with a period of 2.988 days. The orbital period of the system is 1550 days. Using spectroscopic data from three 4-8-m ...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/3757

Repositorio Universidad Andrés Bello
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Gieren, W. ,  Pilecki, B. ,  Pietrzyński, G. ,  Graczyk, D. ,  Udalski, A. ,  Soszyński, I. ,  Thompson, I.B. ,  Moroni, P.G.P. ,  Smolec, R. ,  Konorski, P. ,  Górski, M. ,  Karczmarek, P. ,  Suchomska, K. ,  Taormina, M. ,  Gallenne, A. ,  Storm, J. ,  Bono, G. ,  Catelan, M. ,  Szymański, M. ,  Kozłowski, S. ,  Pietrukowicz, P. ,  Wyrzykowski, Ł. ,  Poleski, R. ,  Skowron, J. ,  Minniti, D. ,  Ulaczyk, K. ,  Mróz, P. ,  Pawlak, M. ,  Nardetto, N. ,  [THE ARAUCARIA PROJECT: A STUDY OF THE CLASSICAL CEPHEID IN THE ECLIPSING BINARY SYSTEM OGLE LMC562.05.9009 IN THE LARGE MAGELLANIC CLOUD] ,  THE ARAUCARIA PROJECT: A STUDY OF THE CLASSICAL CEPHEID IN THE ECLIPSING BINARY SYSTEM OGLE LMC562.05.9009 IN THE LARGE MAGELLANIC CLOUD
Article 2017-03

Autor: 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.l Lucas, P.W. Saito, R.K. Tissera, P. Valenti, E. Zoccali, M.

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, -...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/4274

Repositorio Universidad Andrés Bello
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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.l ,  Lucas, 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
Article 2016-09

Autor: 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.

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...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/2968

Repositorio Universidad Andrés Bello
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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
Article 2018-11

Autor: 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.

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...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/11489

Repositorio Universidad Andrés Bello
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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
Article 2017-09

Autor: Navarrete, C. Catelan, M. Contreras Ramos, R. Alonso-García, J. Gran, F. Dékány, I. Minniti, D.

ω Centauri (NGC 5139) contains many variable stars of different types, including the pulsating type II Cepheids, RR Lyrae and SX Phoenicis stars. We carried out a deep, wide-field, near-infrared (IR) variability survey of ω Cen, using the VISTA telescope. We assembled an unprecedented homogeneous...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/5426

Repositorio Universidad Andrés Bello
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Navarrete, C. ,  Catelan, M. ,  Contreras Ramos, R. ,  Alonso-García, J. ,  Gran, F. ,  Dékány, I. ,  Minniti, D. ,  [Pulsating stars in ω Centauri. Near-IR properties and period-luminosity relations] ,  Pulsating stars in ω Centauri. Near-IR properties and period-luminosity relations
Article 2017-09

Autor: Alonso-García, J. Catelan, M. Ramos, R.C. Dékány, I. Minniti, D.

The VVV survey observed some of the most crowded and most obscured regions in the inner Milky Way during the last years. A significant sample of the less known globular clusters in our galaxy lie there. Combining the high-resolution, wide-field, near infrared capabilities of the survey camera, th...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/5427

Repositorio Universidad Andrés Bello
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Alonso-García, J. ,  Catelan, M. ,  Ramos, R.C. ,  Dékány, I. ,  Minniti, D. ,  [Variable stars in the VVV globular clusters] ,  Variable stars in the VVV globular clusters
Article 2017-11

Autor: Minniti, D. Saito, R.K. Forster, F. Pignata, G. Ivanov, V.D. Lucas, P.W. Beamin, J.C. Borissova, J. Catelan, M. Gonzalez, O.A. Hempel, M. Hsiao, E. Kurtev, R. Majaess, D. Masetti, N. Morrell, N.I. Phillips, M.M. Pullen, J.B. Rejkuba, M. Smith, L. Surot, F. Valenti, E. Zoccali, M.

We report the discovery of an enigmatic large-amplitude (ΔKs >10.5 mag) transient event in near-IR data obtained by the VISTA Variables in the Via Lactea (VVV) ESO Public Survey. The object (designated VVV-WIT- 06) is located at R.A.=17:07:18.917, decl.=-39:06:26.45 (J2000), corresponding to Gala...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/5908

Repositorio Universidad Andrés Bello
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Minniti, D. ,  Saito, R.K. ,  Forster, F. ,  Pignata, G. ,  Ivanov, V.D. ,  Lucas, P.W. ,  Beamin, J.C. ,  Borissova, J. ,  Catelan, M. ,  Gonzalez, O.A. ,  Hempel, M. ,  Hsiao, E. ,  Kurtev, R. ,  Majaess, D. ,  Masetti, N. ,  Morrell, N.I. ,  Phillips, M.M. ,  Pullen, J.B. ,  Rejkuba, M. ,  Smith, L. ,  Surot, F. ,  Valenti, E. ,  Zoccali, M. ,  [The Emergence of the Infrared Transient VVV-WIT-06] ,  The Emergence of the Infrared Transient VVV-WIT-06
Article 2018-08

Autor: Ramos, R.C. Minniti, D. Fernández-Trincado, J.G. Alonso-Garcia, J. Catelan, M. Gran, F. Hajdu, G. Hanke, M. Hempel, M. Diaz, E.M. Pérez-Villegas, A. Rojas-Arriagada, A. Zoccali, M.

We use deep, multi-epoch near-IR images of the VISTA Variables in the Via Lictea (VVV) Survey to measure proper motions (PMs) of stars in the Milky Way globular cluster (GC) FSR1716 = VVV-GC05. The colormagnitude diagram of this object, made by using PM-selected members, shows an extended horizon...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/10879

Repositorio Universidad Andrés Bello
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Ramos, R.C. ,  Minniti, D. ,  Fernández-Trincado, J.G. ,  Alonso-Garcia, J. ,  Catelan, M. ,  Gran, F. ,  Hajdu, G. ,  Hanke, M. ,  Hempel, M. ,  Diaz, E.M. ,  Pérez-Villegas, A. ,  Rojas-Arriagada, A. ,  Zoccali, M. ,  [The Orbit of the New Milky Way Globular Cluster FSR1716 =VVV-GC05] ,  The Orbit of the New Milky Way Globular Cluster FSR1716 =VVV-GC05

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