238 citations · 5.4k across the 176 of their papers we have counts for
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Bayesian Methods for Exoplanet Science
Hannu Parviainen
Exoplanet research is carried out at the limits of the capabilities of current telescopes and instruments. The studied signals are weak, and often embedded in complex systematics f…
The GTC exoplanet transit spectroscopy survey VIII. Flat transmission spectrum for the warm gas giant WASP-80
Hannu Parviainen, Enric Palle, Guo Chen +7
We set out to study the atmosphere of WASP-80b, a warm inflated gas giant with an equilibrium temperature of 800~K, using ground-based transmission spectroscopy covering the…
The GTC exoplanet transit spectroscopy survey. VII. An optical transmission spectrum of WASP-48b
F. Murgas, E. Pallé, H. Parviainen +5
We obtained long-slit optical spectroscopy of one transit of WASP-48b with the Optical System for Imaging and low-Intermediate-Resolution Integrated Spectroscopy (OSIRIS) spectrogr…
Robust, open-source removal of systematics in Kepler data
S. Aigrain, H. Parviainen, S. Roberts +2
We present ARC2 (Astrophysically Robust Correction 2), an open-source Python-based systematics-correction pipeline to correct for the Kepler prime mission long cadence light curves…
The transiting multi-planet system HD3167: a 5.7 MEarth Super-Earth and a 8.3 MEarth mini-Neptune
Davide Gandolfi, Oscar Barragán, Artie P. Hatzes +42
HD3167 is a bright (V=8.9 mag) K0V star observed by the NASA's K2 space mission during its Campaign 8. It has been recently found to host two small transiting planets, namely, HD31…
A feature-rich transmission spectrum for WASP-127b
E. Palle, G. Chen, J. Prieto-Arranz +8
WASP-127b is one of the lowest density planets discovered to date. With a sub-Saturn mass () and super-Jupiter radius (),…
A Low-Mass Exoplanet Candidate Detected By Transiting the Praesepe M Dwarf JS 183
Joshua Pepper, Ed Gillen, Hannu Parviainen +11
We report the discovery of a repeating photometric signal from a low-mass member of the Praesepe open cluster that we interpret as a Neptune-sized transiting planet. The star is JS…
The GTC exoplanet transit spectroscopy survey. VII. Detection of sodium in WASP-52b's cloudy atmosphere
G. Chen, E. Palle, L. Nortmann +3
We report the first detection of sodium absorption in the atmosphere of the hot Jupiter WASP-52b. We observed one transit of WASP-52b with the low-resolution Optical System for Ima…
The GTC exoplanet transit spectroscopy survey. VI. A spectrally-resolved Rayleigh scattering slope in GJ 3470b
G. Chen, E. W. Guenther, E. Palle +5
Aims. As a sub-Uranus-mass low-density planet, GJ 3470b has been found to show a flat featureless transmission spectrum in the infrared and a tentative Rayleigh scattering slope in…