Browsing Research publications by Author "Cook, Neil"

Now showing items 1-3 of 3

    • HiFLEx – a highly flexible package to reduce cross-dispersed Echelle spectra 

      Errmann, Ronny; Cook, Neil; Jones, Hugh; Anglada Escude, Guillem; Sithajan, Sirinrat; Semenko, Eugene; Mkrtichian, David; Martin, Bill; Tanvir, Tabassum; Feng, F.; Collett, James (2020-06)
      We describe a flexible data reduction package for high resolution cross-dispersed echelle data. This open-source package is developed in Python and includes optional GUIs for most of the steps. It does not require any ...

    • Low-resolution near-infrared spectroscopic signatures of unresolved ultracool companions to M dwarfs 

      Cook, Neil; Pinfield, D. J.; Marocco, F.; Burningham, B.; Jones, H. R. A.; Frith, J.; Zhong, J.; Luo, A. L.; Qi, Z. X.; Cowan, N. B.; Gromadzki, M.; Kurtev, R.G.; Guo, Y. X.; Wang, Y. F.; Song, Y. H.; Yi, Z. P.; Smart, R. L. (2017-06-01)
      We develop a method to identify the spectroscopic signature of unresolved L-dwarf ultracool companions, which compares the spectra of candidates and their associated control stars using spectral ratio differences and ...

    • A method for selecting M dwarfs with an increased likelihood of unresolved ultracool companionship 

      Cook, Neil; Pinfield, D.J.; Marocco, F.; Burningham, B.; Jones, H.R.A.; Frith, James; Zhong, J.; Luo, A.; Qi, Z.; Lucas, P.W.; Gromadzki, Mariusz; Day-Jones, Avril; Kurtev, Radostin; Guo, Y.; Wang, Y.; Bai, Y.; Yi, Z.; Smart, R. (2016-04-01)
      Locating ultracool companions to M dwarfs is important for constraining low-mass formation models, the measurement of substellar dynamical masses and radii, and for testing ultracool evolutionary models. We present an ...