Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Boothroyd, A. I."'
Autor:
Martin, P. G., Blagrave, K. P. M., Lockman, Felix J., Goncalves, D. Pinheiro, Boothroyd, A. I., Joncas, G., Miville-Deschenes, M. -A., Stephan, G.
This paper introduces the data cubes from GHIGLS, deep Green Bank Telescope surveys of the 21-cm line emission of HI in 37 targeted fields at intermediate Galactic latitude. The GHIGLS fields together cover over 1000 square degrees at 9.55' spatial r
Externí odkaz:
http://arxiv.org/abs/1504.07723
Autor:
Boothroyd, Arnold I., Blagrave, Kevin, Lockman, Felix J., Martin, Peter G., Gonçalves, Daniela Pinheiro, Srikanth, Sivasankaran
Aims: We devise a data reduction and calibration system for producing highly-accurate 21-cm H I spectra from the Green Bank Telescope (GBT) of the NRAO. Methods: A theoretical analysis of the all-sky response of the GBT at 21 cm is made, augmented by
Externí odkaz:
http://arxiv.org/abs/1110.1765
Autor:
Taylor, A. R., Stil, J. M., Grant, J. K., Landecker, T. L., Kothes, R., Reid, R. I., Gray, A. D., Scott, Douglas, Martin, P. G., Boothroyd, A. I., Joncas, G., Lockman, Felix J., English, J., Sajina, A., Bond, J. R.
Publikováno v:
Astrophys.J.666:201-211,2007
We present deep polarimetric observations at 1420 MHz of the European Large Area ISO Survey North 1 region (ELAIS N1) as part of the Dominion Radio Astrophysical Observatory Planck Deep Fields project. By combining closely spaced aperture synthesis f
Externí odkaz:
http://arxiv.org/abs/0705.2736
Autor:
Stil, J. M., Taylor, A. R., Dickey, J. M., Kavars, D. W., Martin, P. G., Rothwell, T. A., Boothroyd, A. I., Lockman, Felix J., McClure-Griffiths, N. M.
Publikováno v:
Astron.J.132:1158-1176,2006
The VLA Galactic Plane Survey (VGPS) is a survey of HI and 21-cm continuum emission in the Galactic plane between longitude 18 degrees 67 degr. with latitude coverage from |b| < 1.3 degr. to |b| < 2.3 degr. The survey area was observed with the Very
Externí odkaz:
http://arxiv.org/abs/astro-ph/0605422
Publikováno v:
Journal of Chemical Physics, 119, 3187-3207 (2003)
The interaction potential energy surface (PES) of He-H2 is of great importance for quantum chemistry, as the simplest test case for interactions between a molecule and a closed-shell atom. It is also required for a detailed understanding of certain a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0305386
Publikováno v:
Astrophys.J. 583 (2003) 1024-1039
The relatively warm temperatures required on early Earth and Mars have been difficult to account for via warming from greenhouse gases. We tested whether this problem can be resolved for both Earth and Mars by a young Sun that is brighter than predic
Externí odkaz:
http://arxiv.org/abs/astro-ph/0210128
Publikováno v:
Astrophys.J. 583 (2003) 1004-1023
Helioseismology provides a powerful tool to explore the deep interior of the Sun: for example, the adiabatic sound speed can be inferred with an accuracy of a few parts in 10,000. This has become a serious challenge to theoretical models of the Sun.
Externí odkaz:
http://arxiv.org/abs/astro-ph/0210127
Publikováno v:
AIPConf.Proc.402:85-114,1997
We present a review of the main phases of stellar evolution with particular emphasis on the nucleosynthesis and mixing mechanisms in low- and intermediate-mass stars. In addition to explicit studies of the effects of the first, second and third dredg
Externí odkaz:
http://arxiv.org/abs/astro-ph/9705186
Observations of stellar CNO isotope ratios indicate the presence of additional mixing processes on the red giant branch. An estimate of the resulting stellar He-3 depletion is made, as a function of stellar mass and metallicity. Based on stellar nucl
Externí odkaz:
http://arxiv.org/abs/astro-ph/9512133
It is demonstrated that deep circulation mixing below the base of the standard convective envelope, and the consequent "cool bottom processing" (CBP) of the CNO isotopes, can reproduce the trend with stellar mass of the C-12/C-13 observations in low
Externí odkaz:
http://arxiv.org/abs/astro-ph/9512121