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11 papers · 2 filters
Modelling the radio emission from Cyg OB2 #5: a quadruple system?
M. Kennedy, S. M. Dougherty, P. M. Williams +1
Fifty archival radio observations of the supergiant binary Cyg OB2 #5 using the Very Large Array over 20 years are re-examined to determine the location and character of the previo…
Target selection for the SUNS and DEBRIS surveys for debris discs in the solar neighbourhood
N. M. Phillips, J. S. Greaves, W. R. F. Dent +4
Debris discs - analogous to the Asteroid and Kuiper-Edgeworth belts in the Solar system - have so far mostly been identified and studied in thermal emission shortward of 100 um. Th…
The Taurus Spitzer Survey: New Candidate Taurus Members Selected Using Sensitive Mid-Infrared Photometry
L. M. Rebull, D. L. Padgett, C. -E. McCabe +31
We report on the properties of pre-main-sequence objects in the Taurus molecular clouds as observed in 7 mid- and far-infrared bands with the Spitzer Space Telescope. There are 215…
Radiation thermo-chemical models of protoplanetary disks II. Line diagnostics
I. Kamp, I. Tilling, P. Woitke +2
Methods. We use the recently developed disk code ProDiMo to calculate the physico-chemical structure of protoplanetary disks and apply the Monte-Carlo line radiative transfer code…
The massive star binary fraction in young open clusters - II. NGC 6611 (Eagle Nebula)
H. Sana, E. Gosset, C. J. Evans
Based on a set of over 100 medium- to high-resolution optical spectra collected from 2003 to 2009, we investigate the properties of the O-type star population in NGC6611 in the cor…
A FEROS spectroscopic study of the extreme O supergiant He 3-759
P. A. Crowther, C. J. Evans
We present a study of the extreme O-type supergiant He 3-759 using new high-resolution FEROS data, revealing that it is a near spectroscopic twin of HD 151804 (O8 Iaf). We investig…