Browsing Research publications by Author "Lumsden, S."
Now showing items 1-9 of 9
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Chasing discs around O-type (proto)stars : Evidence from ALMA observations
Cesaroni, R.; Sánchez-Monge, A.; Beltrán, M.~T.; Johnston, K. G.; Maud, L. T.; Moscadelli, Luca; Mottram, J.~C.; Ahmadi, A.; Allen, V.; Beuther, H.; Csengeri, T.; Etoka, S.; Fuller, G. A.; Galli, D.; Galván-Madrid, R.; Goddi, C.; Henning, Th; Hoare, M.G.; Klaassen, P.~D.; Kuiper, R.; Kumar, M. S.N.; Lumsden, S.; Peters, T.J.; Rivilla, Victor M.; Schilke, P.; Testi, L.; van der Tak, F.F.S.; Vig, S.; Walmsley, C.M.; Zinnecker, H. (2017-06-13)Context. Circumstellar discs around massive stars could mediate the accretion onto the star from the infalling envelope, and could minimize the effects of radiation pressure. Despite such a crucial role, only a few convincing ... -
Near-infrared imaging observations of the southern massive star-forming region G333.6-0.2
Fujiyoshi, T.; Smith, C.H.; Moore, T.J.T.; Lumsden, S.; Aitken, D.; Roche, P.F. (2005)We present near-infrared broad-band JHK' images of the southern massive star-forming region G333.6−0.2. The slope of the K-luminosity function towards the region (0.24 ± 0.01) is considered to be equivalent to that expected ... -
A near-infrared polarized bipolar cone in the Circinus galaxy
Ruiz, M.; Alexander, D.M.; Young, S.; Hough, J.; Lumsden, S.; Heisler, C.A. (2000)We present near–infrared broad–band polarization images of the nuclear regions of the Circinus galaxy in the J, H and K bands. For the first time the south–eastern reflection cone is detected in polarized light, which is ... -
A radial velocity study of the companion to the central star of Abell 35
Gatti, A.A.; Drew, J.E.; Lumsden, S.; Marsh, T.R.; Moran, C.; Stetson, P. (1997)We report the results of a radial velocity study of BD - 22.3467 deg (LW Hya), the cool companion to the subdwarf central star of the planetary nebula Abell 35. Estimates for its radial velocity have been obtained by cross ... -
Radio and infrared recombination studies of the southern massive star forming region G333.6-0.2
Fujiyoshi, T.; Smith, C.H.; Caswell, J.L.; Moore, T.J.T.; Lumsden, S.; Aitken, D.; Roche, P.F. (2006) -
Searching for the hidden broad-line region in Centaurus A
Alexander, D.M.; Hough, J.; Young, S.; Bailey, J.; Heisler, C.A.; Lumsden, S.; Robinson, A. (1999)We present the first near-infrared (K-band) spectropolarimetric observations of the nuclear region of Centaurus A. Although the data are of high signal-to-noise ratio, polarized broad Brγ is not detected and we place a 3σ ... -
Spectropolarimetry of a complete infrared-selected sample of Seyfert 2 galaxies
Lumsden, S.; Heisler, C.A.; Bailey, J.; Hough, J.; Young, S. (2001) -
Spectropolarimetry of Compton-thin Seyfert 2 galaxies
Lumsden, S.; Alexander, D.M.; Hough, J. (2004-03) -
X-shooting Herbig Ae/Be stars : accretion probed by near-infrared He I emission
Oudmaijer, R.D.; van den Ancker, M.E.; Baines, D.; Caselli, P.; Drew, J.E.; Hoare, M.G.; Lumsden, S.; Montesinos, B.; Sim, S.; Vink, J.S.; Wheelwright, H.E.; de Wit, W.J. (2011)The Herbig Ae/Be stars are intermediate mass pre-main sequence stars that bridge the gap between the low mass T Tauri stars and the Massive Young Stellar Objects. In this mass range, the acting star forming mechanism ...