Browsing by Author "Hough, J. H."

Now showing items 1-4 of 4

    • The effect of airborne dust on astronomical polarization measurements 

      Bailey, Jeremy; Ulanowski, Z.; Lucas, P.W.; Hough, J. H.; Hirst, E.; Tamura, M. (2008-05-11)
      In the past, it has generally been assumed that polarization observations made with ground-based telescopes are unaffected by the passage of light through the Earth's atmosphere. Here, we report observations with a new ...

    • Hundred thousand degree gas in the virgo cluster of galaxies. 

      Sparks, W.B.; Pringle, J. E.; Carswell, R. F.; Donahue, M.; Martin, R.; Voit, M.; Cracraft, M.; Manset, N.; Hough, J. H. (2012-05-01)
      The physical relationship between low-excitation gas filaments at similar to 10(4) K, seen in optical line emission, and diffuse X-ray emitting coronal gas at similar to 10(7) K in the centers of many galaxy clusters is ...

    • The polarisation of HD 189733 

      Bott, Kimberly; Bailey, Jeremy; Kedziora-Chudczer, Lucyna; Cotton, Daniel V.; Lucas, P. W.; Marshall, Jonathan P.; Hough, J. H. (2016-06-11)
      We present linear polarization observations of the exoplanet system HD 189733 made with the HIgh Precision Polarimetric Instrument (HIPPI) on the Anglo-Australian Telescope (AAT). The observations have higher precision ...

    • Polarization due to rotational distortion in the bright star Regulus 

      Cotton, Daniel V.; Bailey, Jeremy A.; Howarth, Ian D.; Bott, Kimberly; Kedziora-Chudczer, Lucyna; Lucas, P. W.; Hough, J. H. (2018-10-01)
      Polarization in stars was first predicted by Chandrasekhar [1] who calculated a substantial linear polarization at the stellar limb for a pure electron-scattering atmosphere. This polarization will average to zero when ...