Bibcode
Picaud, S.; Cabrera-Lavers, A.; Garzón, F.
Bibliographical reference
Astronomy and Astrophysics, v.408, p.141-151 (2003)
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9
2003
Journal
Citations
27
Refereed citations
21
Description
Garzón et al. (cite{Garzon97}), López-Corredoira et al.
(cite{Lopez99}) and Hammersley et al. (cite{Hammersley00}) have
identified in TMGS and DENIS data a large excess of stars at
l=27deg and b=0o which might correspond to an
in-plane bar. We compared near infrared CAIN star counts and simulations
from the Besançon Model of Galaxy on 15 fields between
15o and 45o in longitude and -2o and
2o in latitude. Comparisons confirm the existence of an
overdensity at longitudes lower than 27o which is
inhomogeneous and decreases very steeply off the Galactic plane. The
observed excess in the star distribution over the predicted density is
even higher than 100%. Its distance from the sun is estimated to be
lower than 6 kpc. If this overdensity corresponds to the stellar
population of the bar, we estimate its half-length to 3.9+/-0.4 kpc and
its angle from the Sun-center direction to 45+/-9 degrees.