SCUBA observations of the Horsehead nebula – what did the horse swallow?     

D. Ward-Thompson  D. Nutter  S. Bontemps  A. Whitworth  R. Attwood 《Monthly notices of the Royal Astronomical Society》2006,369(3):1201-1210

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Molecular line mapping of the giant molecular cloud associated with RCW 106 – I. ¹³CO     

I. Bains  T. Wong  M. Cunningham  P. Sparks  D. Brisbin  P. Calisse  J. T. Dempsey  G. Deragopian  S. Ellingsen  B. Fulton  F. Herpin  P. Jones  Y. Kouba  C. Kramer  E. F. Ladd  S. N. Longmore  J. McEvoy  M. Maller  V. Minier  B. Mookerjea  C. Phillips  C. R. Purcell  A. Walsh  M. A. Voronkov  M. G. Burton 《Monthly notices of the Royal Astronomical Society》2006,367(4):1609-1628

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The effect of dissipation on the generation of density structure by magnetohydrodynamic waves     

A. J. Lim  S. A. E. G. Falle  T. W. Hartquist 《Monthly notices of the Royal Astronomical Society》2005,357(2):461-470

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Turbulence in Class 0 and I protostellar envelopes     

D. Ward-Thompson  L. Hartmann  D. J. Nutter 《Monthly notices of the Royal Astronomical Society》2005,357(2):687-690

We estimate the levels of turbulence in the envelopes of class 0 and I protostars using a model based on measurements of the peak separation of double-peaked asymmetric line profiles. We use observations of 20 protostars of both class 0 and I taken in the  HCO⁺(J = 3 → 2)  line that show the classic double-peaked profile. We find that some class 0 sources show high levels of turbulence, whilst others demonstrate much lower levels. In class I protostars, we find predominantly low levels of turbulence. The observations are consistent with a scenario in which class 0 protostars form in a variety of environments and subsequently evolve into class I protostars. The data do not appear to be consistent with a recently proposed scenario in which class 0 protostars can only form in extreme environments.  相似文献   

The effect of a finite mass reservoir on the collapse of spherical isothermal clouds and the evolution of protostellar accretion     

E. I. Vorobyov  Shantanu Basu 《Monthly notices of the Royal Astronomical Society》2005,360(2):675-684

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Ca ii K interstellar observations towards early-type disc and halo stars – distances to intermediate- and high-velocity clouds     

J. V. Smoker  B. B. Lynn  W. R. J. Rolleston  H. R. M. Kay  E. Bajaja  W. G. L. Poppel  F. P. Keenan  P. M. W. Kalberla  C. J. Mooney  P. L. Dufton  R. S. I. Ryans 《Monthly notices of the Royal Astronomical Society》2004,352(4):1279-1290

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The origin and structure of clumps along molecular outflows: the test case of CB3     

Serena Viti  Claudio Codella  Milena Benedettini  Rafael Bachiller 《Monthly notices of the Royal Astronomical Society》2004,350(3):1029-1037

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Rovibrational excitation of HD in collisions with atomic and molecular hydrogen     

D. R. Flower  E. Roueff 《Monthly notices of the Royal Astronomical Society》1999,309(4):833-835

We have computed cross-sections and rate coefficients for rovibrational transitions in HD, induced by collisions with atomic and molecular hydrogen. We employed fully quantum-mechanical methods and the potential of Boothroyd et al. for H–HD, and that of Schwenke for H₂–HD. The rate coefficients for vibrational relaxation v =1→0 of HD are compared with the corresponding values for H₂. The influence of vibrationally excited channels on the rate coefficients for rotational transitions within the v =0 vibrational ground state of HD is shown to be small at T =500 K, where T is the kinetic temperature. The rate coefficients, for 100 T 2000 K, are available from http://ccp7.dur.ac.uk/.  相似文献   

Time-dependent evaporation of icy mantles in hot cores   总被引：1，自引：0，他引：1  

Serena Viti  David A. Williams 《Monthly notices of the Royal Astronomical Society》1999,305(4):755-762

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Inelastic dissipation in a freely rotating body: application to cosmic dust alignment     

A. Lazarian  Michael Efroimsky 《Monthly notices of the Royal Astronomical Society》1999,303(4):673-684

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