Browsing by Author "Jeffers, S. V."

Now showing items 1-2 of 2

    • Analysis of combined radial velocities and activity of BD+20 1790: evidence supporting the existence of a ... 
      Hernán Obispo, M.; Tuomi, M.; Gálvez Ortiz, M. C.; Golovin, A.; Barnes, J. R.; Jones, H. R. A.; Kane, S. R.; Pinfield, D.; Jenkins, James Stewart; Petit, P.; Anglada Escudé, Guillem; Marsden, S. C.; Catalán, S.; Jeffers, S. V.; Castro, E. de; Cornide, M.; Garcés, A.; Jones, M. I.; Gorlova, N.; Andreev, M. (EDP Sciences, 2015)
      Context. In a previous paper we reported a planetary companion to the young and very active K5Ve star BD+20 1790. We found that this star has a high level of stellar activity (log R HK = −3.7) that manifests in a plethora ...
    • Precision radial velocities of 15 M5–M9 dwarfs 
      Barnes, J. R.; Jenkins, James Stewart; Jones, H.R.A.; Jeffers, S. V.; Rojo Rubke, Patricio; Arriagada, P.; Jordán, A.; Minniti, D.; Tuomi, M.; Pinfield, D. J.; Anglada Escudé, Guillem (Royal Astronomical Society, 2014-02-20)
      We present radial velocity measurements of a sample of M5V–M9V stars from our Red-Optical Planet Survey, operating at 0.652–1.025 µm. Radial velocities for 15 stars, with rms precision down to 2.5 m s−1 over a week-long ...