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Article 2018-09

Autor: Schiappacasse-Ulloa, J. Tang, B. Fernández-Trincado, J.G. Zamora, O. Geisler, D. Frinchaboy, P. Schultheis, M. Dell'Agli, F. Villanova, S. Masseron, T. Mészáros, S. Souto, D. Hasselquist, S. Cunha, K. Smith, V.V. García-Hernández, D.A. Vieira, K. Robin, A.C. Minniti, D. Zasowski, G. Moreno, E. Pérez-Villegas, A. Lane, R.R. Ivans, I.I. Pan, K. Nitschelm, C. Santana, F.A. Carrera, R. Roman-Lopes, A.

IC 166 is an intermediate-age open cluster (OC) (∼1 Gyr) that lies in the transition zone of the metallicity gradient in the outer disk. Its location, combined with our very limited knowledge of its salient features, make it an interesting object of study. We present the first high-resolution spe...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/11145

Repositorio Universidad Andrés Bello
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Schiappacasse-Ulloa, J. ,  Tang, B. ,  Fernández-Trincado, J.G. ,  Zamora, O. ,  Geisler, D. ,  Frinchaboy, P. ,  Schultheis, M. ,  Dell'Agli, F. ,  Villanova, S. ,  Masseron, T. ,  Mészáros, S. ,  Souto, D. ,  Hasselquist, S. ,  Cunha, K. ,  Smith, V.V. ,  García-Hernández, D.A. ,  Vieira, K. ,  Robin, A.C. ,  Minniti, D. ,  Zasowski, G. ,  Moreno, E. ,  Pérez-Villegas, A. ,  Lane, R.R. ,  Ivans, I.I. ,  Pan, K. ,  Nitschelm, C. ,  Santana, F.A. ,  Carrera, R. ,  Roman-Lopes, A. ,  [A Chemical and Kinematical Analysis of the Intermediate-age Open Cluster IC 166 from APOGEE and Gaia DR2] ,  A Chemical and Kinematical Analysis of the Intermediate-age Open Cluster IC 166 from APOGEE and Gaia DR2
Article 2018-03

Autor: 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.

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...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/7045

Repositorio Universidad Andrés Bello
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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
Article 2018

Autor: Hayes, C.R. Majewski, S.R. Shetrone, M. Fernández-Alvar, E. Prieto, C.A. Schuster, W.J. Carigi, L. Cunha, K. Smith, V.V. Sobeck, J. Almeida, A. Beers, T.C. Carrera, R. Fernández-Trincado, J.G. García-Hernández, D.A. Geisler, D. Lane, R.R. Lucatello, S. Matthews, A.M. Minniti, D. Nitschelm, C. Tang, B. Tissera, P.B. Zamora, O.

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...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/6362

Repositorio Universidad Andrés Bello
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Hayes, C.R. ,  Majewski, S.R. ,  Shetrone, M. ,  Fernández-Alvar, E. ,  Prieto, C.A. ,  Schuster, W.J. ,  Carigi, L. ,  Cunha, K. ,  Smith, V.V. ,  Sobeck, J. ,  Almeida, A. ,  Beers, T.C. ,  Carrera, R. ,  Fernández-Trincado, J.G. ,  García-Hernández, D.A. ,  Geisler, D. ,  Lane, R.R. ,  Lucatello, S. ,  Matthews, A.M. ,  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] ,  Disentangling the Galactic Halo with APOGEE. I. Chemical and Kinematical Investigation of Distinct Metal-poor Populations
Article 2018

Autor: Fernández-Alvar, E. Carigi, L. Schuster, W.J. Hayes, C.R. Ávila-Vergara, N. Majewski, S.R. Allende Prieto, C. Beers, T.C. Sánchez, S.F. Zamora, O. García-Hernández, D.A. Tang, B. Fernández-Trincado, J.G. Tissera, P. Geisler, D. Villanova, S.

The formation processes that led to the current Galactic stellar halo are still under debate. Previous studies have provided evidence for different stellar populations in terms of elemental abundances and kinematics, pointing to different chemical and star formation histories (SFHs). In the prese...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/6361

Repositorio Universidad Andrés Bello
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Fernández-Alvar, E. ,  Carigi, L. ,  Schuster, W.J. ,  Hayes, C.R. ,  Ávila-Vergara, N. ,  Majewski, S.R. ,  Allende Prieto, C. ,  Beers, T.C. ,  Sánchez, S.F. ,  Zamora, O. ,  García-Hernández, D.A. ,  Tang, B. ,  Fernández-Trincado, J.G. ,  Tissera, P. ,  Geisler, D. ,  Villanova, S. ,  [Disentangling the Galactic Halo with APOGEE. II. Chemical and Star Formation Histories for the Two Distinct Populations] ,  Disentangling the Galactic Halo with APOGEE. II. Chemical and Star Formation Histories for the Two Distinct Populations

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