5 papers
The environs of the HII region Gum31
C. Cappa, V. S. Niemela, R. Amorin +2
We analyze the distribution of the interstellar matter in the environs of the \hii region Gum 31, excited by the open cluster NGC 3324, located in the complex Carina region, with t…
Modeling of the Terminal Velocities of the Dust Ejected Material by the Impact
M. Rengel, M. Kueppers, H. U. Keller +1
We compute the distribution of velocities of the particles ejected by the impact of the projectile released from NASA Deep Impact spacecraft on the nucleus of comet 9P/Tempel 1 on…
New Results on R Aquarii
D. R. Goncalves, A. Mampaso, S. Navarro +1
The first results on new optical data for R Aquarii (based on observations obtained with the 2.5m INT, the 2.5m NOT and the 3.5m NTT) are presented. The morphology and kinematics o…
The Effect of Non Gaussian Errors on the Determination of Steeply Falling Spectra
C. O. Escobar, L. G. dos Santos, R. A. Vazquez
The determination of a steeply falling energy spectrum from rare events with non-gaussian measurement errors is a delicate matter. The final shape of the spectrum may be severely d…
Wide Field Observations of the Ursa Minor dSph galaxy
D. Martinez-Delgado, A. Aparicio
Ursa Minor (UMi) is one of the closest satellites of the Milky Way (d=69 kpc). It is possibly a disrupted dSph interacting with the external Galactic halo. This makes its study qui…