SIMBAD references

2001ApJ...554.1274C - Astrophys. J., 554, 1274-1281 (2001/June-3)

The galactic disk mass budget. I. Stellar mass function and density.

CHABRIER G.

Abstract (from CDS):

In this paper, we use the general theory worked out within the past few years for the structure and the evolution of low-mass stars to derive the stellar mass function in the Galactic disk down to the vicinity of the hydrogen-burning limit from the observed nearby luminosity functions. The accuracy of the mass-magnitude relationships derived from the aforementioned theory is examined by comparison with recent, accurate observational relationships in the M-dwarf domain. The mass function is shown to flatten out below ∼1 M but to keep rising down to the bottom of the main sequence. Combining the present determination below 1 M and J. M. Scalo's mass function for larger masses, we show that the mass function is well described over the entire stellar mass range, from ∼100 M to ∼0.1 M, by three functional forms, namely, a two-segment power law, a lognormal form, or an exponential form, all normalized to the Hipparcos sample at 0.8 M. Integration of this mass function yields a reasonably accurate census of the entire stellar population in the Galactic disk and its volume and surface mass density.

Abstract Copyright:

Journal keyword(s): Cosmology: Dark Matter - Stars: Low-Mass, Brown Dwarfs - Stars: Luminosity Function, Mass Function

Simbad objects: 0

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2001ApJ...554.1274C and select 'bookmark this link' or equivalent in the popup menu


2021.10.23-23:54:38

© Université de Strasbourg/CNRS

    • Contact