104 citations · 237 across the 6 of their papers we have counts for
8 papers · 1 filter
A multispectral view of the periodic events in eta Carinae
A. Damineli, D. J. Hillier, M. F. Corcoran +13
A full description of the 5.5-yr low excitation events in Eta Carinae is presented. We show that they are not as simple and brief as previously thought, but a combination of two co…
Achernar: Rapid Polarization Variability as Evidence of Photospheric and Circumstellar Activity
A. C. Carciofi, A. M. Magalhães, N. V. Leister +2
We present the results of a high accuracy () polarization monitoring of the Be Star Achernar that was carried out between July 7th and November 5th, 2006. Our resu…
The dependence of the viscosity-parameter on the disk scale height profile
Cesar Meirelles Filho, Nelson Leister
It is shown that the height scale for accretion disks is a constant whenever hydrostatic equilibrium and sub-sonic turbulence regime hold in the disk. In order to have a variable h…
Spectroscopic analysis of southern B and Be stars
R. S. Levenhagen, N. V. Leister
Spectroscopic monitoring of 141 southern field B type stars, 114 of them known to exhibit the Be phenomenon, allowed the estimation of their projected rotational velocities,…
Evolution of the circumstellar disc of alpha Eri
M. M. F. Vinicius, N. V. Leister, J. Zorec +1
The Halpha line emission formation region in the circumstellar disc of alpha Eri is: a) extended with a steep outward matter density decline during low H emission phases; b) les…
The Long-Term H Emission Line Variation in Eri
M. M. F. Vinicius, Nelson Vani Leister, Juan Zorec +1
The long-term variation of the H line in Eri has 14-15 years cyclic \bbe phase transitions. The disc formation time scales, interpreted as the periods during which the H…