336 citations
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6 papers · 1 filter
ISM dust feedback from low to high mass stars
Falceta-Goncalves, D.
The dust component of the interstellar medium (ISM) has been extensively studied in the past decades. Late-type stars have been assumed as the main source of dust to the ISM, but r…
Modeling the line variations from the wind-wind shock emissions of WR 30a
D. Falceta-Goncalves, Z. Abraham, V. Jatenco-Pereira
The study of Wolf-Rayet stars plays an important role in evolutionary theories of massive stars. Among these objects, ~ 20% are known to be in binary systems and can therefore be u…
Is the Bardeen-Petterson effect responsible for the warping and precession in NGC 4258?
Anderson Caproni, Zulema Abraham, Mario Livio +1
Strong evidence for the presence of a warped Keplerian accretion disc in NGC4258 (M 106) has been inferred from the kinematics of water masers detected at sub-parsec scales. Assumi…
Effects of the galactic winds on the stellar metallicity distribution of dwarf spheroidal galaxies
Gustavo A. Lanfranchi, Francesca Matteucci
To study the effects of galactic winds on the stellar metallicity distributions and on the evolution of Draco and Ursa Minor dwarf spheroidal galaxies, we compared the predictions…
Electromagnetic structure and weak decay of meson K in a light-front QCD-inspired
Fabiano P. Pereira, J. P. B. C. de Melo, T. Frederico +1
The kaon electromagnetic (e.m.) form factor is reviewed considering a light-front constituent quark model. In this approach, it is discussed the relevance of the quark-antiquark pa…
Wind-wind collision in the eta Carinae binary system - III. The HeII 4686 line profile
Z. Abraham, D. Falceta-Goncalves
We modeled the HeII 4686 line profiles observed in the eta Carinae binary system close to the 2003.5 spectroscopic event, assuming that they were formed in the shocked gas that flo…