Navegação por Autor "Gonzalez Martin, Omaira"

Resultados 1-5 de 5

    • Differences between CO- and calcium triplet-derived velocity dispersions in spiral galaxies : evidence for central star formation? 

      Riffel, Rogemar André; Ho, Luis C.; Mason, Rachel E.; Rodriguez-Ardila, Alberto; Martins, Lucimara Pires; Riffel, Rogério; Díaz, Rubén Joaquín; Colina, Luis; Alonso-Herrero, Almudena; Flohic, Helene; Gonzalez Martin, Omaira; Lira, Paulina; McDermid, Richard; Ramos Almeida, Cristina; Schiavon, Ricardo P.; Thanjavur, Karun; Dutra, Daniel Ruschel; Winge, Claudia; Perlman, Eric (2015) [Artigo de periódico]
      We examine the stellar velocity dispersions (σ) of a sample of 48 galaxies, 35 of which are spirals, from the Palomar nearby galaxy survey. It is known that for ultra-luminous infrared galaxies (ULIRGs) and merger remnants, ...

    • Star formation in AGNs at the hundred parsec scale using MIR high-resolution images 

      Dutra, Daniel Ruschel; Rodríguez Espinosa, Jose Miguel; Gonzalez Martin, Omaira; Pastoriza, Miriani Griselda; Riffel, Rogério (2017) [Artigo de periódico]
      It has been well established in the past decades that the central black hole masses of galaxies correlate with dynamical properties of their harbouring bulges. This notion begs the question of whether there are causal ...

    • The complex, dusty narrow-line region of NGC 4388 : gas–jet interactions, outflows and extinction revealed by near-IR spectroscopy 

      Rodrigues-Ardila, Alberto; Mason, Rachel E.; Martins, Lucimara Pires; Ramos Almeida, Cristina; Riffel, Rogemar André; Riffel, Rogério; Lira, Paulina; Gonzalez Martin, Omaira; Dametto, Natacha Zanon; Flohic, Helene; Ho, Luis C.; Dutra, Daniel Ruschel; Thanjavur, Karun; Colina, Luis; McDermid, Richard; Perlman, Eric; Winge, Claudia (2017) [Artigo de periódico]
      We present Gemini/GNIRS (Gemini Near-Infrared Spectrograph) spectroscopy of the Seyfert 2 galaxy NGC 4388, with simultaneous coverage from 0.85 to 2.5 μm. Several spatially extended emission lines are detected for the first ...

    • The nuclear near-infrared spectral properties of nearby galaxies 

      Mason, Rachel E.; Rodriguez-Ardila, Alberto; Martins, Lucimara Pires; Riffel, Rogério; Gonzalez Martin, Omaira; Ramos Almeida, Cristina; Dutra, Daniel Ruschel; Ho, Luis C.; Thanjavur, Karun; Flohic, Helene; Alonso-Herrero, Almudena; Lira, Paulina; McDermid, Richard; Riffel, Rogemar André; Schiavon, Ricardo P.; Winge, Claudia; Hoenig, Michael D.; Perlman, Eric (2015) [Artigo de periódico]
      We present spectra of the nuclear regions of 50 nearby (D = 1–92 Mpc, median = 20 Mpc) galaxies of morphological types E to Sm. The spectra, obtained with the Gemini Near-IR Spectrograph on the Gemini North telescope, cover ...

    • The stellar spectral features of nearby galaxies in the near infrared : tracers of thermally pulsing asymptotic giant branch stars? 

      Riffel, Rogério; Mason, Rachel E.; Martins, Lucimara Pires; Rodriguez-Ardila, Alberto; Ho, Luis C.; Riffel, Rogemar André; Lira, Paulina; Gonzalez Martin, Omaira; Dutra, Daniel Ruschel; Alonso-Herrero, Almudena; Flohic, Helene; McDermid, Richard; Ramos Almeida, Cristina; Thanjavur, Karun; Winge, Claudia (2015) [Artigo de periódico]
      We analyse the stellar absorption features in high signal-to-noise ratio (S/N) near-infrared (NIR) spectra of the nuclear region of 12 nearby galaxies, mostly spirals. The features detected in some or all of the galaxies ...