Browsing University of Hertfordshire by Author "Rivera, E."

Now showing items 1-4 of 4

    • A long-period planet orbiting a nearby Sun-like star 

      Jones, H.R.A.; Butler, R.P.; Tinney, C.G.; O'Toole, S.; Wittenmyer, R.; Henry, G.W.; Meschiari, S.; Vogt, S.; Rivera, E.; Laughlin, G.; Carter, B.D.; Bailey, J.; Jenkins, J.S. (2010)
      The Doppler wobble induced by the extra-solar planet HD 134987b was first detected by data from the Keck Telescope nearly a decade ago, and was subsequently confirmed by data from the Anglo-Australian Telescope (AAT). ...

    • A Neptune-mass Planet Orbiting the Nearby G Dwarf HD 16417 

      O'Toole, S.; Tinney, C.G.; Butler, R.P.; Jones, H.R.A.; Bailey, J.; Carter, B.D.; Vogt, S.; Laughlin, G.; Rivera, E. (2009)
      Precision Doppler measurements from an intensive 48 night "Rocky Planet Search" observing campaign on the Anglo-Australian Telescope (AAT) have revealed the presence of a low-mass exoplanet orbiting the G1 dwarf HD 16417. ...

    • A super-earth and two Neptunes orbiting the nearby sun-like star 61 Virginis 

      Vogt, S.; Wittenmyer, R.; Butler, R.P.; O'Toole, S.; Henry, G.W.; Rivera, E.; Meschiari, S.; Laughlin, G.; Tinney, C.G.; Jones, H.R.A.; Bailey, J.; Carter, B.D.; Batygin, K. (2010)
      We present precision radial velocity data that reveal a multiple exoplanet system orbiting the bright nearby G5V star 61 Virginis. Our 4.6 years of combined Keck/HIRES and Anglo-Australian Telescope precision radial ...

    • Two planets around Kapteyn's star: a cold and a temperate super-Earth orbiting the nearest halo red dwarf 

      Anglada-Escude, Guillem; Arriagada, P.; Tuomi, Mikko; Zechmeister, M.; Jenkins, J. S.; Ofir, A.; Dreizler, S.; Gerlach, E.; Marvin, C. J.; Reiners, A.; Jeffers, S. V.; Butler, R.P.; Vogt, S. S.; Amado, P. J.; Gerlach, E.; Rodríguez-López, C.; Berdiñas, Z. M.; Morin, J.; Crane, J. D.; Shectman, S. A.; Thompson, Ian B.; Diaz, M.; Rivera, E.; Sarmiento, L. F.; Jones, Hugh (2014-09-01)
      Exoplanets of a few Earth masses can be now detected around nearby low-mass stars using Doppler spectroscopy. In this Letter, we investigate the radial velocity variations of Kapteyn's star, which is both a sub-dwarf M-star ...