Navegação Ciências Exatas e da Terra por Assunto "Dust"

Resultados 1-4 de 4

    • Constraints on the broad-line region properties and extinction in local Seyferts 

      Müller, Allan Schnorr; Davies, Richard I.; Korista, Kirk T.; Burtscher, Leonard; Rosario, David; Storchi-Bergmann, Thaisa; Contursi, Alessandra; Genzel, Reinhard; Gracia-Carpio, Javier; Hicks, Erin K. S.; Janssen, Annemieke; Koss, Michael; Lin, Ming-Yi; Lutz, Dieter; Maciejewski, Witold B.; Muller-Sanchez, Francisco; Orban de Xivry, Gilles; Riffel, Rogério; Riffel, Rogemar André; Schartmann, Marc; Sternberg, Amiel; Sturm, Eckhard; Tacconi, Linda J.; Veilleux, Sylvain; Ulrich, Otho Adam (2016) [Artigo de periódico]
      We use high-spectral resolution (R>8000) data covering 3800–13 000 Å to study the physical conditions of the broad-line region (BLR) of nine nearby Seyfert 1 galaxies. Up to six broad HI lines are present in each spectrum. ...

    • Isochrone fitting of Galactic globular clusters : V. NGC 6397 and NGC 6809 (M55) 

      Gontcharov, George; Bonatto, Charles Jose; Ryutina, Olga S.; Savchenko, Sergey S.; Mosenkov, Aleksandr; Il’in, Vladimir; Khovritchev, Maxim; Marchuk, Alexander; Poliakov, Denis M.; Smirnov, Anton A.; Seguine, Jonah (2023) [Artigo de periódico]
      We fit various colour–magnitude diagrams (CMDs) of the Galactic globular clusters NGC 6397 and NGC 6809 (M55) by isochrones from the Dartmouth Stellar Evolution Database (DSED) and Bag of Stellar Tracks and Isochrones ...

    • Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18 

      Anders, Friedrich; Santiago, Basilio Xavier; Enke, Harry (2019) [Artigo de periódico]
      Combining the precise parallaxes and optical photometry delivered by Gaia’s second data release with the photometric catalogues of Pan-STARRS1, 2MASS, and AllWISE, we derived Bayesian stellar parameters, distances, and ...

    • The need for multicomponent dust attenuation in modeling nebular emission : constraints from SDSS-IV MaNGA 

      Ji, Xihan; Yan, Renbin; Bundy, Kevin; Boquien, Médéric; Schaefer, Adam L.; Belfiore, Francesco; Bershady, Matthew A.; Drory, Niv; Li, Cheng; Westfall, Kyle B.; Lin, Zesen; Bizyaev, D.; Law, David R.; Riffel, Rogério; Riffel, Rogemar André (2023) [Artigo de periódico]
      A fundamental assumption adopted in nearly every extragalactic study that analyzes optical emission lines is that the attenuation of different emission lines can be described by a single attenuation curve, scaled by a ...