BOLOMETRIC STELLAR DISTRIBUTION MODEL IN THE GALAXY AND ITS APPLICATION TO BAADES WINDOW

Citation
A. Ruelasmayorga et al., BOLOMETRIC STELLAR DISTRIBUTION MODEL IN THE GALAXY AND ITS APPLICATION TO BAADES WINDOW, Revista Mexicana de Astronomia y Astrofisica, 33(2), 1997, pp. 143-156
Citations number
33
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
01851101
Volume
33
Issue
2
Year of publication
1997
Pages
143 - 156
Database
ISI
SICI code
0185-1101(1997)33:2<143:BSDMIT>2.0.ZU;2-0
Abstract
We develop a very simple model for the distribution of the stellar com ponent in our Galaxy. This model is completely arbitrary and is utilis ed only as a description of the stellar distribution in the Galaxy. Th e model consists of a flat (disc) component with a radial Gaussian den sity profile and an exponential density decay in the direction perpend icular to the galactic plane; moreover, it also presents a spheroidal (bulge) component with a radial Gaussian density profile. At this stag e, the model is used for predicting the would-be-observed bolometric l uminosity functions (LF) of bright (M-bol less than or equal to 0.0) s tars. The main purpose of this paper is to check, using our simplified galactic model, whether the stellar population in Baade's Window (BW) , may consist of a combination of bulge and disc extending to the gala ctic centre populations. We show that this possibility is consistent w ith the data, and that the observed LF may be separated into two Gauss ian components which may consistently correspond to the bulge and disc contributions.