20 citations · 80 across the 9 of their papers we have counts for
7 papers
Constraints on the structure and seasonal variations of Triton's atmosphere from the 5 October 2017 stellar occultation and previous observations
J. Marques Oliveira, B. Sicardy, A. R. Gomes-Júnior +234
A stellar occultation by Neptune's main satellite, Triton, was observed on 5 October 2017 from Europe, North Africa, and the USA. We derived 90 light curves from this event, 42 of…
Long-term photospheric instabilities and envelopes dynamics in the post-AGB binary system 89 Herculis
M. Gangi, M. Giarrusso, M. Munari +3
We present a long-term optical spectroscopic study of the post-AGB binary system 89 Herculis, with the aim to characterize the relationship between photospheric instabilities and d…
The solar-like "Second Spectrum" and the polarised metal lines in emission of the post-AGB binary 89 Herculis
F. Leone, M. Gangi, M. Giarrusso +6
We studied the polarised spectrum of the post-AGB binary system 89\,Herculis on the basis of data collected with the high resolution \emph{Catania Astrophysical Observatory Spectro…
The multi-line slope method for the measure of the effective magnetic field of the cool stars: an application to the solar like cycle of ε Eri
C. Scalia, F. Leone, M. Gangi +2
A method for the determination of integrated longitudinal stellar fields from low-resolution spectra is the so-called slope method, which is based on the regression of the Stokes V…
A method to measure the transverse magnetic field and orient the rotational axis of stars
Francesco Leone, Cesare Scalia, Manuele Gangi +5
Direct measurements of the stellar magnetic fields are based on the splitting of spectral lines into polarized Zeeman components. With few exceptions, Zeeman signatures are hidden…
Estimating the chromospheric magnetic field from a revised NLTE modeling: the case of HR7428
Innocenza Busa, Giovanni Catanzaro, Antonio Frasca +6
In this work we use the semi-empirical atmospheric modeling method to obtain the chro-mospheric temperature, pressure, density and magnetic field distribution versus height in the…
A spectroscopic study of the open cluster NGC 6250
A. J. Martin, M. J. Stift, L. Fossati +4
We present the chemical abundance analysis of 19 upper main-sequence stars of the young open cluster NGC 6250 (log t ~ 7.42 yr). This work is part of a project aimed at setting obs…