RED DWARFS IN THE CORONAE OF GALAXIES AS MACHOS

Citation
Bv. Komberg et al., RED DWARFS IN THE CORONAE OF GALAXIES AS MACHOS, ASTRONOM ZH, 72(4), 1995, pp. 457-461
Citations number
29
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ASTRONOMICESKIJ ZURNAL
ISSN journal
00046299 → ACNP
Volume
72
Issue
4
Year of publication
1995
Pages
457 - 461
Database
ISI
SICI code
0004-6299(1995)72:4<457:RDITCO>2.0.ZU;2-7
Abstract
It is shown that three detected cases of microlensing of stars in the LMC may be in agreement with a model in which the corona of our Galaxy consists of stars with mass greater than the minimal limit for red dw arves (M > 0.08M(.)). Such an inference about the nature of MACHOs (MA ssive Compact Halo Objects) was made on the basis of estimates of the optical depth of these objects under die assumption of an Isothermic d istribution of their density in the corona of the Galaxy, and limits f or the brightness in the K filter for the coronae of several nearby '' edge-on'' galaxies. This suggestion is consistent with data on the mag nitude of the background at 2.2 mu m in the direction perpendicular to the plane of the Galaxy.