Browsing by Author "Pillai, T."

Now showing items 1-9 of 9

    • ATLASGAL - properties of a complete sample of Galactic clumps 

      Urquhart, J.S.; Koenig, C.; Giannetti, A.; Leurini, S.; Moore, T. J. T.; Eden, D.~J.; Pillai, T.; Thompson, M. A.; Braiding, C.; Burton, M. G.; Csengeri, T.; Dempsey, J. T.; Figura, C.C.; Froebrich, D.; Menten, K.~M.; Schuller, F.; Smith, M. D.; Wyrowski, F. (2018-01-01)
      The APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) is an unbiased 870 μm submillimetre survey of the inner Galactic plane (|ℓ| < 60° with |b| < 1.°5). It is the largest and most sensitive ground-based submillimetre ...

    • ATLASGAL --- Molecular fingerprints of a sample of massive star forming clumps 

      Urquhart, J. S.; Figura, C.; Wyrowski, F.; Giannetti, A.; Kim, W. -J.; Wienen, M.; Leurini, S.; Pillai, T.; Csengeri, T.; Gibson, S. J.; Menten, K.; Moore, T. J. T.; Thompson, M. A. (2019-04-21)
      We have conducted a 3-mm molecular-line survey towards 570 high-mass star-forming clumps, using the Mopra telescope. The sample is selected from the 10 000 clumps identified by the ATLASGAL (APEX Telescope Large Area Survey ...

    • 'The Brick' is not a brick : A comprehensive study of the structure and dynamics of the Central Molecular Zone cloud G0.253+0.016 

      Henshaw, J. D.; Ginsburg, A.; Haworth, T. J.; Longmore, S. N.; Kruijssen, J. M. D.; Mills, E. A. C.; Sokolov, V.; Walker, D. L.; Barnes, A. T.; Contreras, Y.; Bally, J.; Battersby, C.; Beuther, H.; Butterfield, N.; Dale, James; Henning, T.; Jackson, J. M.; Kauffmann, J.; Pillai, T.; Ragan, S.; Riener, M.; Zhang, Q. (2019-05-01)
      In this paper we provide a comprehensive description of the internal dynamics of G0.253+0.016 (a.k.a. 'the Brick'); one of the most massive and dense molecular clouds in the Galaxy to lack signatures of widespread star ...

    • Dense gas in the Galactic central molecular zone is warm and heated by turbulence 

      Ginsburg, A.; Henkel, C.; Ao, Y.; Riquelme, D.; Kauffmann, J.; Pillai, T.; Mills, E.~A.~C.; Requena-Torres, M.~A.; Immer, K.; Testi, L.; Ott, J.; Bally, J.; Battersby, C.; Darling, J.; Aalto, S.; Stanke, T.; Kendrew, S.; Kruijssen, J.~M.~D.; Longmore, S.; Guesten, R.; Menten, K.~M.; Dale, James (2016-01-26)
      Context. The Galactic center is the closest region where we can study star formation under extreme physical conditions like those in high-redshift galaxies. Aims. We measure the temperature of the dense gas in the central ...

    • H2D+ in the High-Mass Star-Forming Region Cygnus X 

      Pillai, T.; Caselli, P.; Kauffmann, J.; Zhang, Q.; Thompson, M. A.; Lis, D. C. (2012-06-01)
      H2D+ is a primary ion that dominates the gas-phase chemistry of cold dense gas. Therefore, it is hailed as a unique tool in probing the earliest, prestellar phase of star formation. Observationally, its abundance and ...

    • 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 ...

    • Probing the initial conditions of high mass star formation: I. Deuteration and depletion in high mass pre/protocluster clumps 

      Pillai, T.; Wyrowski, F.; Hatchell, J.; Gibb, A.G.; Thompson, M.A. (2007)

    • Probing the initial conditions of high-mass star formation II : Fragmentation, stability, and chemistry towards high-mass star-forming regions G29.96-0.02 and G35.20-1.74 

      Pillai, T.; Kauffmann, J.; Wyrowski, F.; Hatchell, J.; Gibb, A.G.; Thompson, M.A. (2011)
      Most work on high-mass star formation has focused on observations of young massive stars in protoclusters. Very little is known about the preceding stage. Here, we present a new high-resolution study of pre-protocluster ...

    • The RMS survey: ammonia mapping of the environment of massive young stellar objects 

      Urquhart, J.~S.; Figura, C.~C.; Moore, T.~J.~T.; Csengeri, T.; Lumsden, S.~L.; Pillai, T.; Thompson, M.~A.; Eden, D.~J.; Morgan, L.~K. (2015-10-01)
      We present the results of ammonia observations towards 66 massive star forming regions identified by the Red Midcourse Space Experiment Source survey. We have used the Green Bank Telescope and the K-Band Focal Plane Array ...