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Evolutionary sequences of stellar models with new radiative opacities. VI.

Research and Technology (MURST) and the Italian Space Agency (ASI). L. Girardi acknowledges a fellowship from Brazilian funding agency CNPq. A. Appendix: The interior EOS In a dense plasma the EOS deviates

Combined photometric and asteroseismic constraints on the properties of NGC 6791

. Hekker , S. Mathur , R.A. García , T.R. Bedding , H. Kjeldsen et al., ApJ 737 , L10 ( 2011 ) [5] A. Bressan , P. Marigo , L. Girardi , B. Salasnich , C. Dal Cero , S. Rubele , A. Nanni , MNRAS 427 , 127

Red Giant evolution and specific problems

In spite of the great effort made in the last decades to improve our understanding of stellar evolution, significant uncertainties still remain due to our poor knowledge of some complex physical processes that still require an empirical calibration, such as the efficiency of convective heat transport and interior mixing. Here we will review the impact of these uncertainties on...

Galactic archaeology with asteroseismology and spectroscopy: Red giants observed by CoRoT and APOGEE

A&A Astronomy & Astrophysics F. Anders C. Chiappini T. S. Rodrigues A. Miglio J. Montalbán B. Mosser L. Girardi M. Valentini A. Noels T. Morel J. A. Johnson M. Schultheis F. Baudin R. de Assis

The TP-AGB phase - Lifetimes from C and M star counts in Magellanic Cloud clusters

A&A Astronomy & Astrophysics L. Girardi 1 P. Marigo 0 0 Dipartimento di Astronomia, Università di Padova , Vicolo dell'Osservatorio 2, 35122 Padova , Italy 1 Osservatorio Astronomico di Padova ... . , & Gratton , R. G. 1997 , A &AS, 121 , 95 Charlot , S. , & Bruzual , G. A. 1991 , ApJ, 367 , 126 Cioni , M.-R. L. , & Habing , H. J. 2003 , A &A, 402 , 133 Cioni , M.-R. L. , Girardi , L. , Marigo , P

Models of red giants in the CoRoT asteroseismology fields combining asteroseismic and spectroscopic constraints

All Sky Catalog of point sources da Silva , L. , Girardi , L. , Pasquini , L. , et al. 2006 , A &A, 458 , 609 Deheuvels, S. , García , R. A. , Chaplin , W. J. , et al. 2012 , ApJ, 756 , 19 Deheuvels, S

GALEX catalogs of UV sources: statistical properties and sample science applications: hot white dwarfs in the Milky Way

, Brazil 1 L. Girardi INAF-Padua Observatory, Padua, Italy 2 P. Marigo Department of Astronomy, Padua University , Padua, Italy We describe the content and properties of UV source catalogs from GALEX's All

The VMC survey - IX. Pilot study of the proper motion of stellar populations in the LMC from 2MASS and VISTA data

, N. , Hernquist , L. , et al. 2010 , ApJ, 721 , L97 Besla , G. , Kallivayalil , N. , Hernquist , L. , et al. 2012 , MNRAS, 421 , 2109 Cioni, M.-R. L. , Girardi , L. , Marigo , P. , & Habing , H. J ... , S. , Pryor , C. , & Olszewski , E. W. 2008 , AJ, 135 , 1024 Robin, A. C. , Reylé , C. , Derrière , S. , & Picaud , S. 2003 , A &A, 409 , 523 Rubele, S. , Kerber , L. , Girardi , L. , et al. 2012 , A

A near-infrared study of AGB and red giant stars in the Leo I dSph galaxy

A near-infrared imaging study of the evolved stellar populations in the dwarf spheroidal galaxy Leo I is presented. Based on JHK observations obtained with the WFCAM wide-field array at the United Kingdom Infrared Telescope, we build a near-infrared photometric catalogue of red giant branch (RGB) and asymptotic giant branch (AGB) stars in Leo I over a 13.5 arcmin2 area. The V−K...

On the effect of helium enhancement on bolometric corrections and Teff-colour relations

We evaluate the effects that variations in He content have on bolometric corrections and Teff-colour relations. To do this, we computed ATLAS9 model atmospheres and spectral energy distributions for effective temperatures ranging from 3500 K to 40 000 K for dwarfs and from 3500 K to 8000 K for giants, considering both “He-non-enhanced” and “He-enhanced” compositions. The...

The VLT/NaCo large program to probe the occurrence of exoplanets and brown dwarfs in wide orbits - I. Sample definition and characterization

. 1009203. da Silva, L., Girardi, L., Pasquini, L., et al. 2006, A&A, 458, 609 da Silva, L., Torres, C. A. O., de La Reza, R., et al. 2009, A&A, 508, 833 Dall, T. H., Foellmi, C., Pritchard, J., et al. 2007

Differential population studies using asteroseismology: Solar-like oscillating giants in CoRoT fields LRc01 and LRa01

. [10] [11] [1] A. Miglio , Chiappini, C. , T. Morel , W.J. Barbieri , M. Chaplin , L. Girardi , J. Montalbán , M. Valentini , B. Mosser , F. Baudin , L. Casagrande et al., MNRAS ( 2013 ), in press ... . Alonso , S. Arribas , C. Martínez-Roger , A &AS 140 , 261 ( 1999 ) [4] A. Alonso , S. Arribas , C. Martinez-Roger , A &AS 131 , 209 ( 1998 ) [5] J.M. Carpenter , AJ 121 , 2851 ( 2001 ) [6] L. Girardi

Differential population studies using asteroseismology: Solar-like oscillating giants in CoRoT fields LRc01 and LRa01

. [10] [11] [1] A. Miglio , Chiappini, C. , T. Morel , W.J. Barbieri , M. Chaplin , L. Girardi , J. Montalbán , M. Valentini , B. Mosser , F. Baudin , L. Casagrande et al., MNRAS ( 2013 ), in press ... . Alonso , S. Arribas , C. Martínez-Roger , A &AS 140 , 261 ( 1999 ) [4] A. Alonso , S. Arribas , C. Martinez-Roger , A &AS 131 , 209 ( 1998 ) [5] J.M. Carpenter , AJ 121 , 2851 ( 2001 ) [6] L. Girardi

The evolved stars of Leo II dSph galaxy from near-infrared UKIRT/WFCAM observations

We present a study of the evolved stellar populations in the dwarf spheroidal galaxy Leo II, based on JHKs observations obtained with the near-infrared array WFCAM at the UKIRT telescope. Combining the new data with optical data, we derived photometric estimates of the distribution of global metallicity [M/H] of individual red giant stars from their V−Ks colours. Our results are...

The VMC survey - III. Mass-loss rates and luminosities of LMC AGB stars

. C. Chiosi, & A. Renzini , Astrophys. Space Sci. Lib ., 122 , 195 Renzini , A. , & Voli , M. 1981 , A &A, 94 , 175 Rubele , S. , Kerber , L. , Girardi , L. , et al. 2012 , A &A, 537 , A106 Sargent , B

The VMC survey - IV. The LMC star formation history and disk geometry from four VMC tiles

We derive the star formation history (SFH) for several regions of the Large Magellanic Cloud (LMC), using deep near-infrared data from the VISTA near-infrared YJKs survey of the Magellanic system (VMC). The regions include three almost-complete 1.4 deg2 tiles located  ~3.5° away from the LMC centre in distinct directions. They are split into 21.0′ × 21.5′ (0.12 deg2) subregions...

Extended star formation history of the star cluster NGC 2154 in the Large Magellanic Cloud

L. Girardi 4 0 Departamento de Astronoma, Universidad de Chile , Casilla 36-D, Santiago, Chile 1 Andes Prize Fellow, Universidad de Chile and Yale University 2 Dipartimento di Astronomia, Universita

Discovery of a planet around the K giant star 4 Ursae Majoris

Fraga for taking some of the observations. This research has made use of the SIMBAD data base operated at CDS, Strasbourg, France. da Silva , L. , Girardi , L. , Pasquini , L. , et al. 2006 , A &A, 458

Does the mixing length parameter depend on metallicity? - Further tests of evolutionary sequences using homogeneous databases

This paper is a further step in the investigation of the morphology of the color-magnitude diagram of Galactic globular clusters, and the fine-tuning of theoretical models, made possible by the recent observational efforts to build homogeneous photometric databases. In particular, we examine here the calibration of the morphological parameter WHB vs. metallicity, originally...