SEARCH FOR VERY LOW-MASS OBJECTS IN THE GALACTIC HALO

Authors
ANBOURG E BAREYRE P BREHIN S GROS M DEKAT J LACHIEZEREY M LAURENT B LESQUOY E MAGNEVILLE C MILSZTAJN A MOSCOSO L QUEINNEC F RENAULT C RICH J SPIRO M VIGROUX L ZYLBERAJCH S ANSARI R CAVALIER F MONIEZ M BEAULIEU JP FERLET R GRISON P VIDALMADJAR A GUIBERT J MOREAU O TAJAHMADY F MAURICE E PREVOT L GRY C
Citation
E. Anbourg et al., SEARCH FOR VERY LOW-MASS OBJECTS IN THE GALACTIC HALO, Astronomy and astrophysics, 301(1), 1995, pp. 1-5
Citations number
17
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
301
Issue
1
Year of publication
1995
Pages
1 - 5
Database
ISI
SICI code
0004-6361(1995)301:1<1:SFVLOI>2.0.ZU;2-3
Abstract
We present results from a search for gravitational microlensing of sta rs in the Large Magellanic Cloud by low mass objects in the Galactic H alo. The search uses the CCD light curves of about 82,000 stars with u p to 46 measurements per night over a period of 10 months. No light cu rve exhibits a form that is consistent with a microlensing event of ma ximum amplification greater than 1.2. This null result makes it unlike ly that the Halo is dominated by objects in the mass range 5 10(-8)M. < M < 5 10(-4)M..