Navegação Ciências Exatas e da Terra por Autor "Turner, D. G."

Resultados 1-5 de 5

    • Anchoring the distence scale via x-ray/infrared data for Cepheid clusters : SU Cas 

      Majaess, Daniel J.; Turner, D. G.; Gallo, Luigi; Gieren, Wolfgang P.; Bonatto, Charles Jose; Lane, Dave; Balam, D.; Berdnikov, L. (2012) [Artigo de periódico]
      New X-ray (XMM-Newton) and JHKs (Observatoire du Mont-Mégantic) observations for members of the star cluster Alessi 95, which Turner et al. discovered hosts the classical Cepheid SU Cas, were used in tandem with UCAC3 ...

    • Anchors for the cosmic distance scale : the Cepheids U Sagittarii, CF Cassiopeiae, and CEab Cassiopeiae 

      Majaess, Daniel J.; Carraro, Giovanni; Moni Bidin, Christian; Bonatto, Charles Jose; Berdnikov, L.; Balam, D.; Moyano, Maximiliano; Gallo, Luigi; Turner, D. G.; Lane, Dave; Gieren, Wolfgang P.; Borissova, Jura; Kovtyukh, Valery V.; Beletsky, Yuri (2013) [Artigo de periódico]
      New and existing X-ray, UBVJHKsW(1−4), and spectroscopic observations were analyzed to constrain fundamental parameters for M25, NGC 7790, and dust along their sight-lines. The star clusters are of particular importance ...

    • Investigating potential planetary nebula/cluster pairs 

      Moni Bidin, Christian; Majaess, Daniel J.; Bonatto, Charles Jose; Mauro, Francesco; Turner, D. G.; Geisler, Doug; Chené, André-Nicolas; Gormaz-Matamala, Alex C.; Borissova, Jura; Kurtev, Radostin Georgiev; Minniti, Dante; Carraro, Giovanni; Gieren, Wolfgang P. (2014) [Artigo de periódico]
      Context. Fundamental parameters characterizing the end-state of intermediate-mass stars may be constrained by discovering planetary nebulae (PNe) in open clusters (OCs). Cluster membership may be exploited to establish the ...

    • On the crucial cluster Andrews-Lindsay 1 and a 4% distance solution for its planetary nebula 

      Majaess, Daniel J.; Carraro, Giovanni; Moni Bidin, Christian; Bonatto, Charles Jose; Turner, D. G.; Moyano, Maximiliano; Berdnikov, L.; Giorgi, Edgard Ervar (2014) [Artigo de periódico]
      Andrews-Lindsay 1 is a pertinent open cluster because it may host the planetary nebula (PN) PHR 1315-6555, yet ambiguities linger concerning its fundamental parameters (>50% scatter). New multiband BVJHW1−4 photometry for ...

    • Strengthening the open cluster distance scale via VVV photometry 

      Majaess, Daniel J.; Turner, D. G.; Moni Bidin, Christian; Geisler, Doug; Borissova, Jura; Minniti, Dante; Bonatto, Charles Jose; Gieren, Wolfgang P.; Carraro, Giovanni; Kurtev, Radostin Georgiev; Mauro, Francesco; Chené, André-Nicolas; Forbes, Douglas; Lucas, Philip W.; Dékány, István; Saito, Roberto K.; Soto, M. (2012) [Artigo de periódico]
      Approximately 14% of known Galactic open clusters possess absolute errors ≤20% as evaluated from n ≥ 3 independent distance estimates, and the statistics for age estimates are markedly worse. That impedes such diverse ...