Browsing Physics & Astronomy by Subject "Circumstellar matter"

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  • Makiwa, G.; Naylor, David A.; van der Wiel, M. H. D.; Ward-Thompson, D.; Kirk, J. M.; Eyres, S.; Abergel, A.; Köhler, M. (Oxford University PressArts and ScienceDepartment of Physics and AstronomyUniversity of LethbridgeUniversity of CopenhagenUniversity of Central LancashireUniversité Paris SudCNRSQueen Mary University of Londonhttps://doi.org/10.1093/mnras/stw428, 2016)
    Dust grains play a key role in the physics of star-forming regions, even though they constitute only ∼1 per cent of the mass of the interstellar medium. The derivation of accurate dust parameters such as temperature (Td), ...
  • van der Wiel, M. H. D.; Naylor, David A.; Kamp, I.; Ménard, F.; Thi, W.-F.; Woitke, P.; Olofsson, G.; Pontoppidan, K. M.; Di Francesco, J.; Glauser, A. M.; Greaves, J. S.; Ivison, R. J. (Oxford University PressArts and ScienceDepartment of Physics and AstronomyUniversity of LethbridgeUniversity of GroningenCNRSUniversité Grenoble AlpesUniversity of St. AndrewsStockholm UniversitySpace Telescope Science InstituteNational Research Council CanadaUniversity of VictoriaETH ZurichEuropean Southern ObservatoryUniversity of Edinburghhttps://doi.org/10.1093/mnras/stu1462, 2014)
    Molecular gas constitutes the dominant mass component of protoplanetary discs. To date, these sources have not been studied comprehensively at the longest far-infrared and shortest submillimetre wavelengths. This paper ...
  • van der Wiel, M. H. D.; Naylor, David A.; Makiwa, Gibion; Satt, M.; Abergel, A. (EDP SciencesArts and ScienceDepartment of Physics & AstronomyUniversity of CopenhagenUniversity of LethbridgeUniversity of RomeUniversité Paris-Saclay10.1051/0004-6361/201628512, 2016)
    Context. The HF molecule has been proposed as a sensitive tracer of diffuse interstellar gas, while at higher densities its abundance could be influenced heavily by freeze-out onto dust grains. Aims. We investigate the spatial ...