Browsing by Subject "galaxies: abundances"

Now showing items 1-8 of 8

    • Analysis of two SMC H II Regions Considering Thermal Inhomogeneities: Implications for the Determinations ... 
      Peña Guerrero, María A.; Peimbert, Antonio; Peimbert, Manuel; Ruiz González, María Teresa (IOP PUBLISHING LTD, 2012-02-20)
      We present long-slit spectrophotometry considering the presence of thermal inhomogeneities (t(2)) of two H II regions in the Small Magellanic Cloud (SMC): NGC 456 and NGC 460. Physical conditions and chemical abundances ...
    • Census of HII regions in NGC 6754 derived with MUSE: Constraints on the metal mixing scale 
      Sánchez, S.; Galbany, Lluis; Pérez, E.; Sánchez Blázquez, P.; Falcón Barroso, J.; Rosales Ortega, F.; Sánchez Menguiano, L.; Marino, R.; Kuncarayakti, Hanindyo; Anderson, J.; Kruehler, T.; Cano Díaz, M.; Barrera Ballesteros, J.; González González, J. (EDP Sciences, 2015)
      We present a study of the HII regions in the galaxy NGC 6754 from a two pointing mosaic comprising 197 637 individual spectra, using integral field spectroscopy recently acquired with the MUSE instrument during its Science ...
    • IZI: Inferring the gas phase metallicity (z) and ionization parameter (q) of ionized nebulae using bayesian ... 
      Blanc Mendiberri, Guillermo (The American Astronomical Society, 2015-01-10)
      We present a new method for inferring the metallicity (Z) and ionization parameter (q) of H ii regions and star-forming galaxies using strong nebular emission lines (SELs). We use Bayesian inference to derive the joint and ...
    • Outer-disk reddening and gas-phase metallicities: The CALIFA connection 
      Marino, R.; Gil de Paz, A.; Sánchez, S.; Sánchez Blázquez, P.; Cardiel, N.; Castillo Morales, A.; Pascual, S.; Vilchez, J.; Kehrig, C.; Molla, M.; Méndez Abreu, J.; Catalán Torrecilla, C.; Florido, E.; Pérez, I.; Ruiz Lara, T.; Ellis, S.; López Sánchez, Ángel R.; González Delgado, R. M.; Lorenzo Cáceres, A. de; García Benito, R.; Galbany, Lluis; Zibett, S.; Cortijo, C.; Kalinova, V.; Mast, D.; Iglesias Paramo, J.; Papaderos, P.; Walcher, C.; Bland Hawthorn, J. (EDP SCIENCES, 2016)
      We study, for the first time in a statistically significant and well-defined sample, the relation between the outer-disk ionized-gas metallicity gradients and the presence of breaks in the surface brightness profiles of ...
    • P-MaNGA Galaxies: emission-lines properties – gas ionization and chemical abundances from prototype observations 
      Blanc Mendiberri, Guillermo; Belfiore, F.; Maiolino, R.; Bundy, K.; Thomas, D.; Maraston, C.; Wilkinson, D.; Sanchez, S. F.; Bershady, M.; Bothwell, M.; Cales, S. L.; Coccato, L.; Drory, N.; Emsellem, E.; Fu, H.; Gelfand, J.; Law, D.; Masters, K.; Parejko, J.; Tremonti, C.; Wake, D.; Weijmans, A.; Yan, R.; Xiao, T.; Zhang, K.; Zheng, T.; Bizyaev, D.; Kinemuchi, K.; Oravetz, D.; Simmons, A. (Royal Astronomical Society, 2015)
      MaNGA (Mapping Nearby Galaxies at Apache Point Observatory) is a 6-yr Sloan Digital Sky Survey (SDSS-IV) survey that will obtain spatially resolved spectroscopy from 3600 to 10 300 Å for a representative sample of over ...
    • Shape of the oxygen abundance profiles in CALIFA face-on spiral galaxies 
      Sánchez Menguiano, L.; Sánchez, S. F.; Pérez, I.; García Benito, R.; Husemann, B.; Mast, D.; Mendoza, A.; Ruiz Lara, T.; Ascasibar, Y.; Bland-Hawthorn, J.; Cavichia, O.; Díaz, A. I.; Florido, E.; Galbany, Lluis; Gónzalez Delgado, R. M.; Kehrig, C.; Marino, R. A.; Márquez, I.; Masegosa, J.; Méndez Abreu, J.; Mollá, M.; Olmo, A. del; Pérez, E.; Sánchez-Blázquez, P.; Stanishev, V.; Walcher, C. J.; López Sánchez, Ángel R. (ESO, 2016-03)
      We measured the gas abundance profiles in a sample of 122 face-on spiral galaxies observed by the CALIFA survey and included all spaxels whose line emission was consistent with star formation. This type of analysis allowed ...
    • Ultraviolet Fe II emission in z ∼ 2 quasars 
      Sameshima, H.; Maza Sancho, José; Matsuoka, Y.; Oyabu, S.; Kawara, K.; Yoshii, Y.; Asami, N.; Ienaka, N.; Tsuzuki, Y. (WILEY-BLACKWELL PUBLISHING, 2009)
      We present spectra of six luminous quasars at z ∼ 2, covering rest wavelengths 1600−3200 Å. The fluxes of the UV Fe II emission lines and MgII λ2798 doublet, the line widths of Mg II and the 3000 Å luminosity were obtained ...
    • Using the local gas-phase oxygen abundances to explore a metallicity dependence in SNe Ia luminosities 
      Moreno Raya, M. E.; López Sánchez, Ángel R.; Molla, M.; Galbany, Lluis (2016)
      We present an analysis of the gas-phase oxygen abundances of a sample of 28 galaxies in the local Universe (z < 0.02) hosting Type Ia supernovae (SNe Ia). The data were obtained with the 4.2 m William Herschel Telescope. ...