Galactic Models and White Dwarf Populations

Abstract

We make use of a previous well tested Galactic model, but describing the observational behavior of the various stellar components in terms of suitable assumptions on their evolutionary status. In this way we are able to predict the expected distribution of Galactic White Dwarfs (WDs), with results which appear in {\em rather good} agreement with recent estimates of the local WD luminosity function. The predicted occurrence of WDs in deep observations of selected galactic fields is presented, discussing the role played by WDs in star counts. The effects on the theoretical predictions of different White Dwarfs evolutionary models, ages, initial mass functions and relations between progenitor mass and WD mass are also discussed.

arXiv comment9 pages with 11 eps figs

References in corpus (23)

• On the variation of the Initial Mass Function
• Simulation of Stellar Objects in SDSS Color Space
• Chemistry and Kinematics in the Solar Neighborhood: Implications for Stellar Populations and for Galaxy Evolution
• Cooling Models for Old White Dwarfs
• A Determination of the Thick Disk Chemical Abundance Distribution: Implications for Galaxy Evolution
• Intermediate mass stars: updated models
• The ages of very cool hydrogen-rich white dwarfs
• Un updated theoretical scenario for globular cluster stars
• The Spheroid Luminosity and Mass Functions From HST Star Counts
• Pure hydrogen atmosphere for very cool white dwarfs
• The composition of HB stars : RR Lyrae variables
• Grids of white dwarf evolutionary models with masses from M= 0.1 to 1.2 Ms
• Cooling sequences and color-magnitude diagrams for cool white dwarfs with hydrogen-atmospheres
• Galactic Globular Cluster Stars: from Theory to Observation
• The Luminosity Function of the Globular Cluster NGC 6397 Near the Limit of Hydrogen Burning
• Early galaxy evolution from deep wide field star counts. II. First estimate of the thick disc mass function
• Galactic Globular Clusters as a test for Very Low-Mass stellar models
• HST Star Counts at High Galactic Latitudes
• Stellar models and Hyades: the Hipparcos test
• Theoretical stellar models for old galactic clusters
• Stellar models for very low mass main sequence stars: the role of model atmospheres
• Evidence in Favour of IMF Variations
• The field of NGC 6397 as a test for Galactic models

Cited by in corpus (20)

• Star counts in the Galaxy. Simulating from very deep to very shallow photometric surveys with the TRILEGAL code
• Lifting the Dusty Veil With Near- and Mid-Infrared Photometry: I. Description and Applications of the Rayleigh-Jeans Color Excess Method
• A White Dwarf catalogue from Gaia-DR2 and the Virtual Observatory
• Discovery of an Unusual Optical Transient with the Hubble Space Telescope
• Stroemgren photometry of Galactic Globular Clusters. I. New Calibrations of the metallicity index
• Detection of the Canis Major galaxy at (l;b)=(244;-8) and in the background of Galactic open clusters
• The VIRMOS deep imaging survey: III. ESO/WFI deep U-band imaging of the 0226-04 deep field
• 21-cm synthesis observations of VIRGOHI 21 - a possible dark galaxy in the Virgo Cluster
• Random Forest identification of the thin disk, thick disk and halo Gaia-DR2 white dwarf population
• STEP: The VST survey of the SMC and the Magellanic Bridge. I. Overview and first results
• Variable Stars in the Cetus dSph Galaxy: Population Gradients and Connections with the Star Formation History
• Discovery of more than two thousand white dwarfs in the globular cluster Omega Centauri
• On the radial extent of the dwarf irregular galaxy IC10
• STREGA: STRucture and Evolution of the GAlaxy. I. Survey Overview and First Results
• Hide and seek between Andromeda's halo, disk, and giant stream
• Disentangling the Galaxy at low Galactic latitudes
• Restoring Color-magnitude Diagrams with the Richardson-Lucy Algorithm
• White dwarfs in the Capodimonte deep field
• Theoretical Color-Magnitude Diagrams and the Star Forming Histories of Interacting Open Multi-population Model Galaxies: Bursts and Busts
• On the dwarf irregular galaxy NGC 6822. I. Young, intermediate and old stellar populations