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Browsing by Author "Morgan, L.K."
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Ammonia observations of bright-rimmed clouds : establishing a sample of triggered protostars
Morgan, L.K.; Figura, C.C.; Urquhart, J.S.; Thompson, M.A. (2010)We observed 42 molecular condensations within previously identified bright-rimmed clouds in the ammonia rotational inversion lines NH3(1,1), (2,2), (3,3) and (4,4) using the Green Bank Telescope in Green Bank, West Virginia. ... -
CHIMPS: the 13CO/C18O (J = 3 to 2) Heterodyne Inner Milky Way Plane Survey
Rigby, A.J.; Moore, T.J.T.; Plume, R.; Eden, D.J.; Urquhart, J.S.; Thompson, M.A.; Mottram, J.C.; Brunt, C.M.; Butner, H. M.; Dempsey, J. T.; Gibson, S.J.; Hatchell, J.; Jenness, T.; Kuno, N.; Longmore, S.N.; Morgan, L.K.; Polychroni, D.; Thomas, H.; White, G.J.; Zhu, M. (2016-03-01)We present the 13CO/C18O (J = 3 → 2) Heterodyne Inner Milky Way Plane Survey (CHIMPS) which has been carried out using the Heterodyne Array Receiver Program on the 15 m James Clerk Maxwell Telescope (JCMT) in Hawaii. The ... -
CO observations towards bright-rimmed clouds
Morgan, L.K.; Urquhart, J.S.; Thompson, M.A. (2009)Bright-rimmed clouds (BRCs) appear to be sites of triggered star formation induced through the propagation of shocks initiated by the expansion of nearby H ii regions. Our main aim is to establish support for observations ... -
The effect of spiral arms on star formation in the Galaxy
Moore, T.J.T.; Urquhart, J.S.; Morgan, L.K.; Thompson, M.A. (2012-10-11) -
High-mass star formation within the bright-rimmed cloud SFO 79
Urquhart, J.S.; Thompson, M.A.; Morgan, L.K.; White, G.J. (2004) -
Observational study of sites of triggered star formation - CO and mid-infrared observations
Urquhart, J.S.; Morgan, L.K.; Thompson, M.A. (2009)Context. Bright-rimmed clouds (BRCs) are isolated molecular clouds located on the edges of evolved HII regions. Star formation within these clouds may have been triggered through the propagation of photoionisation-induced ... -
A radio and mid-infrared survey of northern bright-rimmed clouds
Morgan, L.K.; Thompson, M.A.; Urquhart, J.S.; White, G.J.; Miao, J. (2004) -
Radio continuum and molecular line observations of four bright-rimmed clouds
Urquhart, J.S.; Thompson, M.A.; Morgan, L.K.; White, G.J. (2006) -
A SCUBA survey of bright-rimmed clouds
Morgan, L.K.; Thompson, M.A.; Urquhart, J.S.; White, G.J. (2008-01-01)Context. Bright-rimmed clouds (BRCs) are potential examples of triggered star formation regions, in which photoionisation driven shocks caused by the expansion of HII regions induce protostellar collapse within the clouds. ... -
Searching for signs of triggered star formation towards IC 1848
Thompson, M.A.; White, G.J.; Morgan, L.K.; Miao, J.; Fridlund, C. V. M.; Huldtgren-White, M. (2004) -
Star formation in Galactic spiral arms and the interarm regions
Eden, D.J.; Moore, T.J.T.; Morgan, L.K.; Thompson, M.A.; Urquhart, J.S. (2013-05-11)The line of sight through the Galactic plane between longitudes l = 37deg.83 and 42deg.50 allows for the separation of Galactic Ring Survey molecular clouds into those that fall within the spiral arms and those located in ... -
The statistics of triggered star formation : an overdensity of massive young stellar objects around Spitzer bubbles
Thompson, Mark; Urquhart, J.S.; Moore, T.J.T.; Morgan, L.K. (2012-03-01)We present a detailed statistical study of massive star formation in the environment of 322 Spitzer mid-infrared bubbles by using the Red MSX Source (RMS) survey for massive young stellar objects (YSOs). Using a combination ... -
A tale of two cores: triggered massive star formation in the bright-rimmed cloud SFO 75
Urquhart, J.S.; Thompson, M.A.; Morgan, L.K.; Pestalozzi, M.; White, G.J.; Muna, D.N. (2007) -
Triggered star formation in bright-rimmed clouds: the Eagle nebula revisited
Miao, J.; White, G.J.; Nelson, R.P.; Thompson, M.A.; Morgan, L.K. (2006)