Búsqueda - Portal Conocimiento Público CL

Article 2018-09

On the Impact of Helium Content on the RR Lyrae Distance Scale

Autor: Marconi, M. Bono, G. Pietrinferni, A. Braga, V.F. Castellani, M. Stellingwerf, R.F.

We constructed new sets of He-enhanced (Y = 0.30, Y = 0.40) nonlinear, time-dependent convective hydrodynamical models of RR Lyrae (RRL) stars covering a broad range in metal abundances (Z = 0.0001-0.02). The increase in He content from the canonical value (Y = 0.245) to Y = 0.30-0.40 causes a si...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/11121

Repositorio Universidad Andrés Bello

Evolution-stars

Horizontal-branch-stars

Oscillations-stars

Listar archivos Citar Enlace permanente

Marconi, M. , Bono, G. , Pietrinferni, A. , Braga, V.F. , Castellani, M. , Stellingwerf, R.F. , [On the Impact of Helium Content on the RR Lyrae Distance Scale] , On the Impact of Helium Content on the RR Lyrae Distance Scale

Article 2017-09

Observations of field and cluster RR Lyræ with Spitzer. Towards high precision distances with Population II stellar tracers

Autor: Marengo, M. Neeley, J. Bono, G. Braga, V. Dall'Ora, M. Marconi, M. Trueba, N. Magurno, D.

We present our project to calibrate the RR Lyræ period-luminosity-metallicity relation using a sample of Galactic calibrators in the halo and globular clusters.

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/5425

Repositorio Universidad Andrés Bello

Listar archivos Citar Enlace permanente

Marengo, M. , Neeley, J. , Bono, G. , Braga, V. , Dall'Ora, M. , Marconi, M. , Trueba, N. , Magurno, D. , [Observations of field and cluster RR Lyræ with Spitzer. Towards high precision distances with Population II stellar tracers] , Observations of field and cluster RR Lyræ with Spitzer. Towards high precision distances with Population II stellar tracers

Article 2017-06

On a New Theoretical Framework for RR Lyrae Stars. II. Mid-infrared Period-Luminosity-Metallicity Relations

Autor: Neeley, J.R. Marengo, M. Bono, G. Braga, V.F. Dall'ora, M. Magurno, D. Marconi, M. Trueba, N. Tognelli, E. Moroni, P.G.P. Beaton, R.L. Freedman, W.L. Madore, B.F. Monson, A.J. Scowcroft, V. Seibert, M. Stetson, P.B.

We present new theoretical period-luminosity-metallicity (PLZ) relations for RR Lyræ stars (RRLs) at Spitzer and WISE wavelengths. The PLZ relations were derived using nonlinear, time-dependent convective hydrodynamical models for a broad range of metal abundances (Z = 0.0001-0.0198). In deriving...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/4738

Repositorio Universidad Andrés Bello

Infrared: stars

Stars: horizontal-branch

Stars: variables: RR Lyrae

Listar archivos Citar Enlace permanente

Neeley, J.R. , Marengo, M. , Bono, G. , Braga, V.F. , Dall'ora, M. , Magurno, D. , Marconi, M. , Trueba, N. , Tognelli, E. , Moroni, P.G.P. , Beaton, R.L. , Freedman, W.L. , Madore, B.F. , Monson, A.J. , Scowcroft, V. , Seibert, M. , Stetson, P.B. , [On a New Theoretical Framework for RR Lyrae Stars. II. Mid-infrared Period-Luminosity-Metallicity Relations] , On a New Theoretical Framework for RR Lyrae Stars. II. Mid-infrared Period-Luminosity-Metallicity Relations

Article 2018-03

On the RR Lyrae Stars in Globulars. V. the Complete Near-infrared (JHK s) Census of ω Centauri RR Lyrae Variables

Autor: Braga, V.F. Stetson, P.B. Bono, G. Dall'Ora, M. Ferraro, I. Fiorentino, G. Iannicola, G. Marconi, M. Marengo, M. Monson, A.J. Neeley, J. Persson, S.E. Beaton, R.L. Buonanno, R. Calamida, A. Castellani, M. Carlo, E.D. Fabrizio, M. Freedman, W.L. Inno, L. Madore, B.F. Magurno, D. Marchetti, E. Marinoni, S. Marrese, P. Matsunaga, N. Minniti, D. Monelli, M. Nonino, M. Piersimoni, A.M. Pietrinferni, A. Prada-Moroni, P. Pulone, L. Stellingwerf, R. Tognelli, E. Walker, A.R. Valenti, E. Zoccali, M.

We present a new complete near-infrared (NIR, JHK s) census of RR Lyrae stars (RRLs) in the globular ω Cen (NGC 5139). We collected 15,472 JHK s images with 4-8 m class telescopes over 15 years (2000-2015) covering a sky area around the cluster center of 60 ×34 arcmin2. These images provided cali...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/7047

Repositorio Universidad Andrés Bello

Globular Clusters: individual (w Centauri)

Stars: distances

Stars: horizontal-branch

Listar archivos Citar Enlace permanente

Braga, V.F. , Stetson, P.B. , Bono, G. , Dall'Ora, M. , Ferraro, I. , Fiorentino, G. , Iannicola, G. , Marconi, M. , Marengo, M. , Monson, A.J. , Neeley, J. , Persson, S.E. , Beaton, R.L. , Buonanno, R. , Calamida, A. , Castellani, M. , Carlo, E.D. , Fabrizio, M. , Freedman, W.L. , Inno, L. , Madore, B.F. , Magurno, D. , Marchetti, E. , Marinoni, S. , Marrese, P. , Matsunaga, N. , Minniti, D. , Monelli, M. , Nonino, M. , Piersimoni, A.M. , Pietrinferni, A. , Prada-Moroni, P. , Pulone, L. , Stellingwerf, R. , Tognelli, E. , Walker, A.R. , Valenti, E. , Zoccali, M. , [On the RR Lyrae Stars in Globulars. V. the Complete Near-infrared (JHK s) Census of ω Centauri RR Lyrae Variables] , On the RR Lyrae Stars in Globulars. V. the Complete Near-infrared (JHK s) Census of ω Centauri RR Lyrae Variables

Article 2018

Gauging the Helium Abundance of the Galactic Bulge RR Lyrae Stars

Autor: Marconi, M. Minniti, D.

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 ...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/6721

Repositorio Universidad Andrés Bello

Galaxy: bulge

Galaxy: evolution

Stars: abundances

Listar archivos Citar Enlace permanente

Marconi, M. , Minniti, D. , [Gauging the Helium Abundance of the Galactic Bulge RR Lyrae Stars] , Gauging the Helium Abundance of the Galactic Bulge RR Lyrae Stars

Descubre y comparte nuestro conocimiento público

Resultados de búsqueda

On the Impact of Helium Content on the RR Lyrae Distance Scale

Observations of field and cluster RR Lyræ with Spitzer. Towards high precision distances with Population II stellar tracers

On a New Theoretical Framework for RR Lyrae Stars. II. Mid-infrared Period-Luminosity-Metallicity Relations

On the RR Lyrae Stars in Globulars. V. the Complete Near-infrared (JHK s) Census of ω Centauri RR Lyrae Variables

Gauging the Helium Abundance of the Galactic Bulge RR Lyrae Stars

Descubre y comparte nuestro conocimiento público

Resultados de búsqueda

On the Impact of Helium Content on the RR Lyrae Distance Scale

[Marconi_On_the_Impact_of_Helium.pdf]

Observations of field and cluster RR Lyræ with Spitzer. Towards high precision distances with Population II stellar tracers

[Marengo_M_Observations_of_field.pdf]

On a New Theoretical Framework for RR Lyrae Stars. II. Mid-infrared Period-Luminosity-Metallicity Relations

[Neeley_On_a_New_Theoretical.pdf]

On the RR Lyrae Stars in Globulars. V. the Complete Near-infrared (JHK s) Census of ω Centauri RR Lyrae Variables

[Braga_On_the_RR_Lyrae.pdf]

Gauging the Helium Abundance of the Galactic Bulge RR Lyrae Stars

[Marconi_Gauging_the_Helium.pdf]