Navegação Ciências Exatas e da Terra por Autor "Ferrari, Fabricio"

Resultados 1-11 de 11

    • Gas inflows towards the nucleus of the active galaxy NGC 7213 

      Müller, Allan Schnorr; Storchi-Bergmann, Thaisa; Nagar, Neil M.; Ferrari, Fabricio (2014) [Artigo de periódico]
      We present two-dimensional stellar and gaseous kinematics of the inner 0.8 × 1.1 kpc² of the LINER/Seyfert 1 galaxy NGC 7213, from optical spectra obtained with the Gemini Multi- Object Spectrograph integral field spectrograph ...

    • Gas inflows towards the nucleus of the Seyfert 2 galaxy NGC 1667 

      Müller, Allan Schnorr; Storchi-Bergmann, Thaisa; Ferrari, Fabricio; Nagar, Neil M. (2017) [Artigo de periódico]
      We use optical spectra from the inner 2 × 3 kpc2 of the Seyfert 2 galaxy NGC 1667, obtained with the Gemini Multi-Object Spectrograph integral field spectrograph on the Gemini South telescope at a spatial resolution of ...

    • Gas streaming motions towards the nucleus of M81 

      Müller, Allan Schnorr; Storchi-Bergmann, Thaisa; Riffel, Rogemar André; Ferrari, Fabricio; Steiner, João Evangelista; Axon, David J.; Robinson, Andrew (2011) [Artigo de periódico]
      We present two-dimensional stellar and gaseous kinematics of the inner 120×250 pc2 of the LINER/Seyfert 1 galaxy M81, from optical spectra obtained with the Gemini Multi-Object Spectrograph (GMOS) integral field spectrograph ...

    • Gemini IFU, VLA, and HST observations of the OH Megamaser Galaxy IRAS17526 + 3253 

      Sales, Dinalva Aires de; Robinson, Andrew; Riffel, Rogemar André; Storchi-Bergmann, Thaisa; Gallimore, Jack F.; Kharb, Preeti; Baum, Stefi Alison; O’Dea, Christopher; Carpes, Hekatelyne Prestes; Ferrari, Fabricio (2019) [Artigo de periódico]
      We present a multiwavelength study of the OH megamaser galaxy IRAS17526 + 3253, based on new Gemini multi-object spectrograph integral field unit (GMOS/IFU) observations, Hubble Space Telescope F814W, and H α + [N II] ...

    • Intermediate-age stars as the origin of low stellar velocity dispersion nuclear rings : the case of Mrk 1157 

      Riffel, Rogério; Riffel, Rogemar André; Ferrari, Fabricio; Storchi-Bergmann, Thaisa (2011) [Artigo de periódico]
      We have used theGeminiNear-Infrared Integral-Field Spectrograph to map the age distribution of the stellar population in the inner 400 pc of the Seyfert 2 galaxy Mrk 1157 (NGC 591), at a spatial resolution of 35 pc. We ...

    • Multicolor photometric properties of six early-type galaxies 

      Saraiva, Maria de Fátima Oliveira; Ferrari, Fabricio; Pastoriza, Miriani Griselda (1999) [Artigo de periódico]
      We present BV RI CCD surface photometry for 4 elliptical and 2 S0 galaxies that show bright emission lines in their nuclear spectra. We obtained isophote maps, luminosity profiles, and basic photometric parameters. We also ...

    • A photometric and kinematic study of the stars and interstellar medium in the central 2 kiloparsecs of NGC 3379 

      Pastoriza, Miriani Griselda; Winge, Claudia; Ferrari, Fabricio; Macchetto, Ferdinando Duccio; Caon, Nicola (2000) [Artigo de periódico]
      Hubble Space Telescope images of NGC 3379 show that the V and I luminosity profiles in the inner 13" of this E1 galaxy are represented by two di†erent components : a stellar bulge following a Sérsic law with exponent n=2.36 ...

    • Survey of the ISM in early-type galaxies 

      Ferrari, Fabricio; Pastoriza, Miriani Griselda; Macchetto, Ferdinando Duccio; Bonatto, Charles Jose; Panagia, Nino; Sparks, William B. (2002) [Artigo de periódico]
      We present mid-IR photometric properties for a sample of 28 early-type galaxies observed at 6.75, 9.63 and 15 m with the ISOCAM instrument on board the ISO satellite. We nd total mid-IR luminosities in the range (3−42) x ...

    • The benchmark black hole in NGC 4258 : dynamical models from high-resolution two-dimensional stellar kinematics 

      Drehmer, Daniel Alf; Storchi-Bergmann, Thaisa; Ferrari, Fabricio; Cappellari, Michele; Riffel, Rogemar André (2015) [Artigo de periódico]
      NGC 4258 is the galaxy with the most accurate (maser-based) determination for the mass of the supermassive black hole (SMBH) in its nucleus. In this work, we present a two-dimensional mapping of the stellar kinematics in ...

    • The properties and environment of very young galaxies in the local Universe 

      Trevisan, Marina; Mamon, Gary A.; Thuan, Trinh Xuan; Ferrari, Fabricio; Pilyugin, Leonid S.; Ranjan, A. (2021) [Artigo de periódico]
      In the local Universe, there are a handful of dwarf compact star-forming galaxies with extremely low oxygen abundances. It has been proposed that they are young, having formed a large fraction of their stellar mass during ...

    • The relationship between the Sérsic law profiles measured along the major and minor axes of elliptical galaxies 

      Ferrari, Fabricio; Dottori, Horacio Alberto; Caon, Nicola; Nóbrega, Antonio José Farias; Pavani, Daniela Borges (2004) [Artigo de periódico]
      In this paper we discuss the reason why the parameters of the Sérsic model best-fitting the major axis light profile of elliptical galaxies can differ significantly from those derived for the minor axis profile.We show ...