Search Publications
Dynamical structure of the multiple stellar system HD164492
González, J. F.; Veramendi, M. E.
HD 164492 is a Trapezium-like stellar system with one O-type and several early B-type components immersed in an active star forming region (M20). The relevance of this system has increased after the recent discovery that one of its visual components, HD 164492C, is a spectroscopic triple with a remarkable magnetic field. As a complement of those s…
Búsqueda y análisis de asociaciones estelares en NGC247
Baume, G.; Rodríguez, M. J.; Feinstein, C.
From ACS/HST observations, available in the Space Telescope database, the search and analysis of young stellar associations in the galaxy NGC247 have been carried out. The Path Linkage Criterion was used for the detection, identifying 147 young stellar groups. Thanks to the ACS high spatial resolution, it was possible to detect the individual comp…
El programa científico de la Agencia Espacial Europea
Gabriel, C.
The rendezvous of the spatial mission Rosetta with the comet 67P/Churyumov-Gerasimenko and the spectacular deployment of the Philae lander to its surface marked the conclusion of the European Space Agency's (ESA's) scientific program Horizon 2000, 30 years after it had been conceived, back in 1985. Three of its cornerstone missions continue today …
Estudio de fuentes de rayos X asociadas a la fuente de rayos γ no identificada 2FGL J0534.8-0548
Combi, J. A.; García, F.; Kornecki, P.
In this paper, we present a preliminary study of four point-like X-ray sources detected with XMM-Newton. Three of them lie within the ellipse corresponding to the 95 confidence contour of the unidentified -ray source 2FGL J0534.80548c, detected with the Fermi telescope. The fourth, named 2XMM J053514.8055143 and identified with a binary system, is…
Observaciones combinadas XMM-Newton/Chandra del remanente de supernova G306.3-0.9
Filócomo, A.; Combi, J. A.; García, F. +3 more
In this paper we study the spatial and spectral distribution of the physical and chemical properties of the supernova remnant G306.3-0.9 by using data of the X-rays telescopes XMM-Newton and Chandra, which we complement with radio and infrared information in order to study the morphology of the source and the effect of the shock wave in the intere…
Galactic dynamics in the times of Gaia
Aguilar, L. A.
We present a brief description of the Gaia astrometric mission and its current status. We discuss the importance of creating realistic ``mock catalogues'' to compare models and data in the space of Gaia observables, rather than mapping observables into spaces of theoretical parameters. We talk about some important lessons we have learnt in the pro…
An outflow linked to a YSO in Gum 31?
Bosch, G.; Cappa, C. E.; Vazzano, M. M. +1 more
We analyze the distribution of the molecular gas associated with 10349-5824, a young stellar object located on the edge of the H ii region Gum31, with the aim of investigating the existence of bipolar outflows. We use CO(2-1) line observations obtained with the APEX telescope, H line observations on the K band taken with Flamingos 2 in Gemini Sout…
Spectral energy distribution, radio maps and polarization of Cygnus X-1: a lepto-hadronic model
Romero, G. E.; Vila, G. S.; Pepe, C.
The microquasar Cygnus X-1 is one of the most studied astrophysical sources. Several radiative models for the non-thermal broadband emission of Cygnus X-1 are available. For the jet emission in particular, only leptonic models have been considered despite the observational evidence of the presence of hadrons in the jets of other microquasars. In t…