Navegação Ciências Exatas e da Terra por Autor "Thanjavur, Karun"

Resultados 1-4 de 4

    • 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, ...

    • 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 ...