The Victoria-Regina Stellar Models: Evolutionary Tracks and Isochrones for a Wide Range in Mass and Metallicity that Allow for Empirically Constrained Amounts of Convective Core Overshooting

By D. VandenBerg, P. A. Bergbusch, Patrick Dowler. 2005

325 citations recorded by the source corpus.

Seventy-two grids of stellar evolutionary tracks, along with the means to generate isochrones and luminosity/color functions from them, are presented in this investigation. Sixty of them extend (and encompass) the sets of models reported by VandenBerg et al. for 17 [Fe/H] values from -2.31 to -0.30 and α-element abundances corresponding to [α/Fe] = 0.0, 0.3, and 0.6 (at each iron abundance) to the solar metallicity and to sufficiently high masses (up to ~2.2 M☉) that isochrones may be computed for ages as low as 1 Gyr. The remaining grids contain tracks for masses from 0.4 to 4.0 M☉ and 12 [Fe/H] values between -0.60 and +0.49 (assuming solar metal-to-hydrogen number abundance ratios): in this case, isochrones may be calculated down to ~0.2 Gyr. The extent of convective core overshooting has been modeled using a parameterized version of the Roxburgh criterion, in which the value of the free parameter at a given mass and its dependence on mass have been determined from analyses of binary star data and the observed color-magnitude diagrams for several open clusters. Because the calculations reported herein satisfy many empirical constraints, they should provide useful probes into the properties of both simple and complex stellar populations.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/cd0133d7389a462b12917f012939942f3ab576d3

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Citations in the corpus

• Homogeneous studies of transiting extrasolar planets – IV. Thirty systems with space-based light curves (2011, background): “As in Paper III Iuse five sets of model predictions:Claret (Claret 2004, 2005, 2006, 2007), Y2 (Demarque et al. 2004),Teramo(Pietrinferni et al. 2004),VRSS (VandenBerg et al. 2006) andDSEP(Dotter et al. 2008).”
• Homogeneous studies of transiting extrasolar planets - III. Additional planets and stellar models (2010, methodology): “For the fourth model set I acquired the Victoria-Regina (VRSS) models9 (VandenBerg et al. 2006) with scaled-solar elemental abundances.”
• Ground-based CCD astrometry with wide-field imagers - II. A star catalog for M 67: WFI@2.2 m MPG/ESO astrometry, FLAMES@VLT radial velocities (2008, methodology): “The best fit of main sequence using the Victoria-Regina isochrones (VandenBerg et al. 2006) can be achieved with a distance modulus equal to 9.56 mag and a reddening of 0.03.”
• NUGRID STELLAR DATA SET. I. STELLAR YIELDS FROM H TO BI FOR STARS WITH METALLICITIES Z = 0.02 and Z = 0.01 (2013, methodology): “The core overshooting value for the 1.65M case is 1/2 of the value appropriate for higher masses, as motivated by the investigation of VandenBerg et al. (2006) using star cluster data on low-mass stars.”
• Accurate masses and radii of normal stars: modern results and applications (2009, methodology): “…of the Victoria code (VandenBerg et al. 2006), which includes He diffusion in the outer layers; note that the adopted mixing length and overshooting parameters of these models have not yet been adjusted to match the solar and other constraints satisfied by the VandenBerg et al. (2006) model series.”
• Multiplicity among Solar-type Stars (2017, methodology): “From the photometry in Endl et al. (2016), we assume ΔmV=4.5mag, which, with reference to the VandenBerg et al. (2006) evolutionary tracks, implies a secondary main-sequence position at Teff,Ab;4520K and a mass MAb;0.72Me.”
• MESA ISOCHRONES AND STELLAR TRACKS (MIST) 0: METHODS FOR THE CONSTRUCTION OF STELLAR ISOCHRONES (2016, background): “…as BaSTI (Pietrinferni et al. 2004), Dartmouth (Dotter et al. 2008), PARSEC (Bressan et al. 2012), Pisa (Tognelli et al. 2011), Victoria-Regina (VandenBerg et al. 2006), and YaleYonsei (Yi et al. 2001), are based on the more-sophisticated approach, one implementation of which is described in…”
• THE QUENCHING OF THE ULTRA-FAINT DWARF GALAXIES IN THE REIONIZATION ERA (2014, methodology): “Compared to the previous version of the isochrone code (VandenBerg et al. 2006), the current version includes the effects of He diffusion, new Hburning nuclear reaction rates, and the adoption of the Asplund et al. (2009) solar metals mixture.”
• Evidence for TP-AGB Stars in High-Redshift Galaxies, and Their Effect on Deriving Stellar Population Parameters (2006, methodology): “In a recent attempt, based on fitting the shape of the color-magnitude of some open clusters, VandenBerg et al. 2006 concluded that overshooting would amount to 10%of a pressure scale height, of course vanishing as the convective core itself vanishes.”
• Scaled solar tracks and isochrones in a large region of the Z-Y plane I. From the ZAMS to the TP-A (2008, methodology): “In Victoria-Regina stellar models by VandenBerg et al. (2006)a free parameter varying with mass is adopted to take into account overshoot in the context of Roxburgh’s equation for the maximum size of a central convective zone, so the comparison is not so straight.”
• MODULES FOR EXPERIMENTS IN STELLAR ASTROPHYSICS (MESA): PLANETS, OSCILLATIONS, ROTATION, AND MASSIVE STARS (2013, background): “…parameter is a function of both mass and metal abundance, in that it should transition smoothly from zero to a maximum value over a small range of stellar mass where a convective core is present on the main sequence (Woo & Demarque 2001; VandenBerg et al. 2006), but see also Claret (2007).”
• MESA ISOCHRONES AND STELLAR TRACKS (MIST). I. SOLAR-SCALED MODELS (2016, methodology): “…Dotter et al. 2008), GARSTEC (Weiss & Schlattl 2008), Lyon (Baraffe et al. 1998, 2003, 2015), Padova/PARSEC (Girardi et al. 2002; Marigo et al. 2008; Bressan et al. 2012), Y2 (Yi et al. 2001; Kim et al. 2002; Yi et al. 2003; Demarque et al. 2004), Victoria-Regina (VandenBerg et al. 2006), and more.”