OBSERVATIONAL LIMITS ON THE CONTRIBUTION OF SUB-STELLAR AND STELLAR OBJECTS TO THE GALACTIC HALO

Authors
ANSARI R CAVALIER F MONIEZ M AUBOURG E BAREYRE P BREHIN S GROS M LACHIEZEREY M LAURENT B LESQUOY E MAGNEVILLE C MILSZTAJN A MOSCOSO L QUEINNEC F RENAULT C RICH J SPIRO M VIGROUX L ZYLBERAJCH S BEAULIEU JP FERLET R GRISON P VIDALMADJAR A GUIBERT J MOREAU O TAJAHMADY F MAURICE E PREVOT L GRY C
Citation
R. Ansari et al., OBSERVATIONAL LIMITS ON THE CONTRIBUTION OF SUB-STELLAR AND STELLAR OBJECTS TO THE GALACTIC HALO, Astronomy and astrophysics, 314(1), 1996, pp. 94-103
Citations number
33
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
314
Issue
1
Year of publication
1996
Pages
94 - 103
Database
ISI
SICI code
0004-6361(1996)314:1<94:OLOTCO>2.0.ZU;2-N
Abstract
EROS (Experience de Recherche d'Objets Sombres) has been monitoring th e luminosity of 4 million stars in the Large Magellanic Cloud in order to search for gravitational microlensing by unseen objects in the gal actic halo. We present here the results from 3 years of EROS Schmidt p lates data. Two stars exhibit light curves that are consistent with a sizeable microlensing effect. CCD data obtained later on revealed that one of these stars is an eclipsing binary system. Combining Schmidt p lates data and the published results from our 16 CCD camera, we set up per limits on the number of unseen objects in the halo in the mass ran ge [10(-7), 1]M..