Browsing by Author "Davies, B."

Now showing items 1-10 of 10

    • The G305 star-forming complex : a wide-area radio survey of ultracompact H ii regions 

      Hindson, Luke; Thompson, M. A.; Urquhart, J.S.; Faimali, A.; Clark, J. S.; Davies, B. (2012-04)
      We present wide-area radio continuum 5.5 and 8.8 GHz (5.5 and 3.4 cm) Australia Telescope Compact Array observations of the complex and rich massive star-forming region G305. The aim of this study is to perform an un-targeted ...

    • The G305 star-forming complex : radio continuum and molecular line observations 

      Hindson, Luke; Thompson, Mark; Urquhart, J.S.; Faimali, Alessandro; Johnston-Hollitt, M.; Clark, J. S.; Davies, B. (2013-11-01)
      We present 109–115 GHz (3 mm) wide-field spectral line observations of 12CO, 13CO and C18O J = 1–0 molecular emission and 5.5 and 8.8 GHz (6 and 3 cm) radio continuum emission towards the high-mass star-forming complex ...

    • The G305 star-forming complex : the central star clusters Danks 1 and Danks 2 

      Davies, B.; Clark, J.S.; Trombley, C.; Figer, D. F.; Najarro, F.; Crowther, P.A.; Kudritzki, R.P.; Thompson, M.; Urquhart, J.S.; Hindson, Luke (2012)
      The G305 H ii complex (G305.4+0.1) is one of the most massive star-forming structures yet identified within the Galaxy. It is host to many massive stars at all stages of formation and evolution, from embedded molecular ...

    • The G305 star-forming complex : wide-area molecular mapping of NH3 and H2O masers 

      Hindson, Luke; Thompson, M.A.; Urquhart, J.S.; Clark, J.S.; Davies, B. (2010)
      We present wide-area radio (12 mm) Mopra telescope observations of the complex and rich massive star-forming region G305. Our goals are to determine the reservoir for star formation within G305 using NH3 to trace the dense ...

    • Molecular gas kinematics within the central 250 pc of the Milky Way 

      Henshaw, J.~D.; Longmore, S.~N.; Kruijssen, J.~M.~D.; Davies, B.; Bally, J.; Barnes, A.; Battersby, C.; Cunningham, M.~R.; Ginsburg, A.; Immer, K.; Jones, P.~A.; Kendrew, S.; Mills, E.~A.~C.; Molinari, S.; Moore, T.~J.~T.; Ott, J.; Pillai, T.; Rathborne, J.; Schilke, P.; Schmiedeke, A.; Testi, L.; Walker, D.; Walsh, A.; Zhang, Q.; Dale, James (2016-02-12)
      Using spectral line observations of HNCO, N2H+, and HNC, we investigate the kinematics of dense gas in the central ∼250 pc of the Galaxy. We present SCOUSE (Semi-automated multi-COmponent Universal Spectral-line fitting ...

    • Multiple stellar generations in massive star forming complexes 

      Clark, J.S.; Davies, B.; Thompson, Mark (2011-01-01)
      The formation of massive stars is an outstanding problem in stellar evolution. However, it is expected that they are (predominantly) born in heirarchical environments within massive young clusters, which in turn are located ...

    • The P Cygni supergiant [OMN2000] LS1 – implications for the star formation history of W51 

      Clark, J.S.; Davies, B.; Najarro, F.; MacKenty, J.; Crowther, P.A.; Messineo, M.; Thompson, M.A. (2009)
      Aims. We investigate the nature of the massive star [OMN2000] LS1 and use these results to constrain the history of star formation within the host complex W51. Methods. We utilised a combination of near-IR spectroscopy and ...

    • Probing the Dragonfish star-forming complex: : the ionizing population of the young massive cluster Mercer 30 

      Fuente, D. de la; Najarro, F.; Borissova, J.; Alegría, S. Ramírez; Hanson, M. M.; Trombley, C.; Figer, D. F.; Davies, B.; Garcia, M.; Kurtev, R.; Urbaneja, M. A.; Smith, L. C.; Lucas, P. W.; Herrero, A. (2016-05-01)
      The Dragonfish Nebula has been recently claimed to be powered by a superluminous but elusive OB association. Instead, systematic searches in near-infrared photometric surveys have found many other cluster candidates on ...

    • Spectropolarimetry of Young and Evolved Stars 

      Oudmaijer, R.D.; Davies, B.; Vink, J.S.; Drew, J.E. (2005)

    • Spectropolarimetry of Young and Evolved Stars 

      Oudmaijer, R.D.; Davies, B.; Vink, J.S.; Drew, J.E. (Astronomical Society of the Pacific, 2005)
      Circumstellar disks play an important role in many stages of the evolution of stars. However, it is only possible to directly image circumstellar disks for a few of the nearest stars. For massive stars, the situation is ...