activity
20042022
most citedVariations in the Galactic star formation rate and density thresholds for star formation

359 citations · 3.1k across the 47 of their papers we have counts for

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11 papers · 1 filter

astro-ph2008★ 53 cited

Physical and chemical conditions in methanol maser selected hot-cores and UCHII regions

C. R. Purcell, S. N. Longmore, M. G. Burton +4

We present the results of a targeted 3-mm spectral line survey towards the eighty-three 6.67 GHz methanol maser selected star forming clumps observed by Purcell et al. 2006. In add…

astro-ph2008★ 73 cited

The RMS Survey: CO observations of candidate massive YSOs in the northern Galactic plane

J. S. Urquhart, A. L. Busfield, M. G. Hoare +9

Context: The Red MSX Source (RMS) survey is an ongoing multi-wavelength observational programme designed to return a large, high-resolution mid-infrared colour-selected sample of m…

astro-ph2008★ 68 cited

A survey for redshifted molecular and atomic absorption lines - II. Associated HI, OH and millimetre lines in the z >~ 3 Parkes quarter-Jansky flat-spectrum sample

S. J. Curran, M. T. Whiting, T. Wiklind +3

We present the results of a z>2.9 survey for HI 21-cm and molecular absorption in the hosts of radio quasars using the GMRT and the Tidbinbilla 70-m telescope. Previously published…

astro-ph2008★ 39 cited

A Pilot Survey for the HO Southern Galactic Plane Survey (HOPS)

Andrew J. Walsh, Nadia Lo, Michael G. Burton +5

We describe observations with the Mopra radiotelescope designed to assess the feasibility of the HO maser southern Galactic plane survey (HOPS). We mapped two one-square-degree…

astro-ph2007★ 30 cited

New ammonia masers towards NGC6334I

A. J. Walsh, S. N. Longmore, S. Thorwirth +2

We report the detection of new ammonia masers in the non-metastable (8,6) and (11,9) transitions towards the massive star forming region NGC6334I. Observations were made with the A…

astro-ph2007★ 94 cited

Multi-wavelength observations of Southern Hot Molecular Cores traced by methanol masers - I. Ammonia and 24 GHz Continuum Data

S. N. Longmore, M. G. Burton, P. J. Barnes +3

We present observations of the (1,1), (2,2), (4,4) and (5,5) inversion transitions of para-ammonia (NH3) and 24 GHz continuum, taken with the Australia Telescope Compact Array towa…

astro-ph2007

The molecular environment of massive star forming cores associated with Class II methanol maser emission

S. N. Longmore, M. G. Burton, P. J. Barnes +3

Methanol maser emission has proven to be an excellent signpost of regions undergoing massive star formation (MSF). To investigate their role as an evolutionary tracer, we have rece…

astro-ph2006★ 21 cited

An Atomic and Molecular Study of the Interstellar Medium Around the SNR RCW 103

S. A. Paron, E. Reynoso, C. Purcell +2

We report on the detection of HCO+ and 12CO emission in the rotational transition J=1-0 in the vicinity of the shock front at the southern border of the supernova remnant RCW 103,…

astro-ph2005★ 56 cited

Resolving the Kinematic Distance Ambiguity of Southern Massive Young Stellar Object Candidates

A. L. Busfield, C. R. Purcell, M. G. Hoare +3

We investigate the use of HI data to resolve the near/far ambiguity in kinematic distances of massive young stellar object (MYSO) candidates. Kinematic distances were obtained from…

astro-ph2004

High-mass star formation in the Southern Hemisphere sky

V. Minier, M. G. Burton, T. Hill +4

We report on a multi-wavelength (IR to cm) and multi-resolution (1 mas to 20 arcsec) exploration of high-mass star formation regions in the Galactic plane, at longitudes observable…

astro-ph2004★ 53 cited

Spin temperatures and covering factors for HI 21-cm absorption in damped Lyman-alpha systems

S. J. Curran, M. T. Murphy, Y. M. Pihlstroem +2

We investigate the practice of assigning high spin temperatures to damped Lyman-alpha absorption systems (DLAs) not detected in HI 21-cm absorption. In particular, Kanekar & Chenga…