Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Rodrigues, Irapuan"'
Autor:
Rosa, Deise A., Rodrigues, Irapuan, Krabbe, Ângela Cristina, Milone, André Castro, Carvalho, Sarita
We investigate the interaction effects in the stellar and gas kinematics, stellar population and ionized gas properties in the interacting galaxy pair AM1209-292, composed by NGC4105 and NGC4106. The data consist of long-slit spectra in the range of
Externí odkaz:
http://arxiv.org/abs/2105.11530
We study the formation of polar ring galaxies via minor mergers. We used N-body+hydrodynamics simulations to reproduce the dynamics of the observed system AM 2229-735 that is a minor merger whose interaction signals are those of a progenitor for a po
Externí odkaz:
http://arxiv.org/abs/1911.03595
Autor:
Pereira, Fabrícia A. C., Lodato, Giuseppe, Rodrigues, Irapuan, Alves, Márcio E. S., Price, Daniel J.
Publikováno v:
MNRAS, 484, 31 (2019)
We estimate the accretion rates produced when a circumprimary gas disc is pushed into the primary supermassive black hole (SMBH) by the tidal force of the decaying secondary during a SMBH merger. Using the 3D Smoothed Particle Hydrodynamics (SPH) cod
Externí odkaz:
http://arxiv.org/abs/1901.11199
Polar ring galaxies (PRGs) are peculiar systems where a gas-rich, nearly polar ring surrounds a host galaxy. They are the result of galaxy interactions that form mainly by tidal accretion of material from a gas rich donor galaxy. There is a number of
Externí odkaz:
http://arxiv.org/abs/1208.4063
Autor:
Dors Jr, Oli L., Riffel, Rogemar A., Cardaci, Monica V., Hagele, Guillermo F., Krabbe, Angela C., Perez-Montero, Enrique, Rodrigues, Irapuan
We investigate the excitation mechanisms of near-infrared [Fe ii] and H2 emission lines observed in Active Galactic Nuclei (AGNs). We built a photoionization model grid considering a two-component continuum, one accounts for the Big Bump component pe
Externí odkaz:
http://arxiv.org/abs/1201.4046
Publikováno v:
Astron.J.137:4083-4090,2009
Two-dimensional kinematics of the central region of M 83 (NGC 5236) were obtained through three-dimensional NIR spectroscopy with Gemini South telescope. The spatial region covered by the integral field unit (~5" x 13" or ~90 x 240 pc), was centered
Externí odkaz:
http://arxiv.org/abs/0905.1853
A massive objects such as a globular cluster passing through the disk of a galaxy can trigger star formation. We test the hypothesis that the most massive globular cluster in the Galaxy, $\omega$ Centauri, which crossed the disk approximately $24\pm2
Externí odkaz:
http://arxiv.org/abs/0902.4406
Autor:
Diaz, Ruben J., Dottori, Horacio, Aguero, Maria P., Mediavilla, Evencio, Rodrigues, Irapuan, Mast, Damian
Publikováno v:
Astrophys.J.652:1122-1128,2006
The huge star formation events that occur at some galactic centers do not provide enough clues as to their origin, since the morphological signatures of the triggering mechanism are smeared out in the timescale of a few orbital revolutions of the gal
Externí odkaz:
http://arxiv.org/abs/astro-ph/0611771
Autor:
Caritá, Lucas Antonio, Rodrigues, Irapuan, Puerari, Ivânio, Schiavo, Luiz Eduardo Camargo Aranha
Publikováno v:
In New Astronomy April 2018 60:48-60
Autor:
Mirabel, Felix, Rodrigues, Irapuan
Publikováno v:
Science 300 (2003) 1119-1120
We show that the black hole in the x-ray binary Cygnus X-1 was formed in situ and did not receive an energetic trigger from a nearby supernova. The progenitor of the black hole had an initial mass greater than 40 solar masses and during the collapse
Externí odkaz:
http://arxiv.org/abs/astro-ph/0305205