SIMBAD references

2006A&A...454..185H - Astronomy and Astrophysics, volume 454, 185-199 (2006/7-4)

Galactic Bulge microlensing optical depth from EROS-2.

HAMADACHE C., LE GUILLOU L., TISSERAND P., AFONSO C., ALBERT J.N., ANDERSEN J., ANSARI R., AUBOURG E., BAREYRE P., BEAULIEU J.P., CHARLOT X., COUTURES C., FERLET R., FOUQUE P., GLICENSTEIN J.F., GOLDMAN B., GOULD A., GRAFF D., GROS M., HAISSINSKI J., DE KAT J., LESQUOY E., LOUP C., MAGNEVILLE C., MARQUETTE J.B., MAURICE E., MAURY A., MILSZTAJN A., MONIEZ M., PALANQUE-DELABROUILLE N., PERDEREAU O., RAHAL Y.R., RICH J., SPIRO M., VIDAL-MADJAR A., VIGROUX L. and ZYLBERAJCH S.

Abstract (from CDS):

We present a new EROS-2 measurement of the microlensing optical depth toward the Galactic Bulge. Light curves of 5.6x106 clump-giant stars distributed over 66deg2 of the Bulge were monitored during seven Bulge seasons. 120 events were found with apparent amplifications greater than 1.6 and Einstein radius crossing times in the range 5d<tE<400d. This is the largest existing sample of clump-giant events and the first to include northern Galactic fields. In the Galactic latitude range 1.4°<|b|<7.0°, we find τ/10–6=(1.62±0.23)exp[-a(|b|-3°)] with a=(0.43±0.16)°–1. These results are in good agreement with our previous measurement, with recent measurements of the MACHO and OGLE-II groups, and with predictions of Bulge models.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: bulge - Galaxy: stellar contents - Galaxy: structure - gravitational lensing

VizieR on-line data: <Available at CDS (J/A+A/454/185): table3.dat>

Nomenclature: Table 3: EROS2 FFF-N-N-NNNNN N=121.

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 22

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2006A&A...454..185H and select 'bookmark this link' or equivalent in the popup menu