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Planetesimal fragmentation and giant planet formation
(EDP Sciences, 2019-05)
Context. Most planet formation models that incorporate planetesimal fragmentation consider a catastrophic impact energy threshold for basalts at a constant velocity of 3 km/s throughout the process of the formation of the ...
Model for Population III microquasars
(EDP Sciences, 2019-09)
Current simulations indicate that the first stars were formed predominantly in binary systems. The study of the contribution of the first accreting binary systems to the reionization and heating of the intergalactic medium ...
Raman-scattered O VI Features in the Symbiotic Nova RR Telescopii
(IOP Publishing, 2021-07)
RR Tel is an interacting binary system in which a hot white dwarf (WD) accretes matter from a Mira-type variable star via gravitational capture of its stellar wind. This symbiotic nova shows intense Raman-scattered O VI ...
Model for Population III microquasars
(EDP Sciences, 2019-09)
Context. Current simulations indicate that the first stars were formed predominantly in binary systems. Studying the contribution of the first accreting binary systems to the reionization and heating of the intergalactic ...
Chemical analysis of early-type stars with planets
(EDP Sciences, 2021-03)
Aims. Our goal is to explore the chemical pattern of early-type stars with planets, searching for a possible signature of planet formation. In particular, we study a likely relation between the λ Boötis chemical pattern ...
An HST/COS legacy survey of high-velocity ultraviolet absorption in the Milky Way's circumgalactic medium and the Local Group
(EDP Sciences, 2017-06)
Context. The Milky Way is surrounded by large amounts of diffuse gaseous matter that connects the stellar body of our Galaxy with its large-scale Local Group (LG) environment. Aims. To characterize the absorption properties ...
Neutrino production in Population III microquasars
(Elsevier Science, 2021-03)
Microquasars (MQs) are binary systems composed by a star feeding mass to a compact object through an accretion disk. The compact object, usually a black hole, launches oppositely directed jets which are typically observed ...
A Profile Analysis of Raman-scattered O VI Bands at 6825 Å and 7082 Å in Sanduleak’s Star
(IOP Publishing, 2016-12-21)
We present a detailed modeling of the two broad bands observed at 6825 and 7082 Å in Sanduleak?s star, a controversial object in the Large Magellanic Cloud. These bands are known to originate from Raman scattering of O vi ...
Chemical abundance of the LINER galaxy UGC 4805 with SDSS-IV MaNGA
(Wiley Blackwell Publishing, Inc, 2021-08)
Chemical abundance determinations in Low-Ionization Nuclear Line Regions (LINERs) are especially complex and uncertain because the nature of the ionizing source of this kind of object is unknown. In this work, we study the ...
Abundancias químicas y parámetros físicos de estrellas con planetas
(Asociación Argentina de Astronomía, 2015-08)
La elevada metalicidad en las estrellas con planetas podría favorecer la formación de planetas ya sea a través del modelo de acreción de núcleos o de la inestabilidad del disco. Debido a esto hay un gran interés en estudiar ...