Using HARPS-N to characterise the long-period planets in the PH-2 and Kepler-103 systems

Sophie C Dubber*, Annelies Mortier, Ken Rice, Chantanelle Nava, Luca Malavolta, Helen Giles, Adrien Coffinet, David Charbonneau, Andrew Vanderburg, Aldo S Bonomo, Walter Boschin, Lars A. Buchhave, Andrew Collier Cameron, Rosario Cosentino, Xavier Dumusque, Adriano Ghedina, Avet Harutyunyan, Raphaëlle D Haywood, David Latham, Mercedes López-MoralesGiusi Micela, Emilio Molinari, Francesco A Pepe, David Phillips, Giampaolo Piotto, Ennio Poretti, Dimitar Sasselov, Alessandro Sozzetti, Stéphane Udry

*Corresponding author for this work

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We present confirmation of the planetary nature of PH-2b, as well as the first mass estimates for the two planets in the Kepler-103 system. PH-2b and Kepler-103c are both long-period and transiting, a sparsely-populated category of exoplanet. We use Kepler light-curve data to estimate a radius, and then use HARPS-N radial velocities to determine the semi-amplitude of the stellar reflex motion and, hence, the planet mass.
Original languageEnglish
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
Pages (from-to)5103-5121
Number of pages19
Publication statusPublished - 2019


  • Planets and satellites: composition
  • Techniques: photometric
  • Techniques: radial velocities
  • Techniques: spectroscopic

Cite this

Dubber, S. C., Mortier, A., Rice, K., Nava, C., Malavolta, L., Giles, H., ... Udry, S. (2019). Using HARPS-N to characterise the long-period planets in the PH-2 and Kepler-103 systems. Monthly Notices of the Royal Astronomical Society, 490(4), 5103-5121.