350 citations · 6.5k across the 136 of their papers we have counts for
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ACCESS I: An Optical Transmission Spectrum of GJ 1214b Reveals a Heterogeneous Stellar Photosphere
Benjamin Rackham, Néstor Espinoza, Dániel Apai +8
GJ 1214b is the most studied sub-Neptune exoplanet to date. Recent measurements have shown its near-infrared transmission spectrum to be flat, pointing to a high-altitude opacity s…
Metal enrichment leads to low atmospheric C/O ratios in transiting giant exoplanets
Néstor Espinoza, Jonathan Fortney, Yamila Miguel +2
We predict the carbon-to-oxygen (C/O) ratios in the hydrogen-helium envelope and atmospheres of a sample of nearly 50 relatively cool ( 1000 K) transiting gas gian…
K2-113b: A dense hot-Jupiter transiting a solar analogue
Néstor Espinoza, Markus Rabus, Rafael Brahm +8
We present the discovery of K2-113b, a dense hot-Jupiter discovered using photometry from Campaign 8 of the Kepler-2 (K2) mission and high-resolution spectroscopic follow up obtain…
A machine learned classifier for RR Lyrae in the VVV survey
Felipe Elorrieta, Susana Eyheramendy, Andrés Jordán +10
Variable stars of RR Lyrae type are a prime tool to obtain distances to old stellar populations in the Milky Way, and one of the main aims of the Vista Variables in the Via Lactea…
CERES: A Set of Automated Routines for Echelle Spectra
Rafael Brahm, Andrés Jordán, Néstor Espinoza
We present the Collection of Elemental Routines for Echelle Spectra (CERES). These routines were developed for the construction of automated pipelines for the reduction, extraction…
HATS-31b Through HATS-35b: Five Transiting Hot Jupiters Discovered by the HATSouth Survey
M. de Val-Borro, G. Á. Bakos, R. Brahm +24
We report the discovery of five new transiting hot Jupiter planets discovered by the HATSouth survey: HATS-31b through HATS-35b. These planets orbit moderately bright stars with V…
HATS-22b, HATS-23b and HATS-24b: Three new transiting Super-Jupiters from the HATSouth Project
Joao Bento, Brian Schmidt, Joel Hartman +22
We report the discovery of three moderately high-mass transiting hot Jupiters from the HATSouth survey: HATS-22b, HATS-23b and HATS-24b. These planets add to the numbers of known p…
HATS-19b, HATS-20b, HATS-21b: Three Transiting Hot-Saturns Discovered by the HATSouth Survey
W. Bhatti, G. Á. Bakos, J. D. Hartman +24
We report the discovery by the HATSouth exoplanet survey of three hot-Saturn transiting exoplanets: HATS-19b, HATS-20b, and HATS-21b. The planet host HATS-19 is a slightly evolved…
HATS-18 b: An Extreme Short--Period Massive Transiting Planet Spinning Up Its Star
Kaloyan M. Penev, Joel D. Hartman, Gaspar A. Bakos +19
We report the discovery by the HATSouth network of HATS-18 b: a 1.980 +/- 0.077 Mj, 1.337 +0.102 -0.049 Rj planet in a 0.8378 day orbit, around a solar analog star (mass 1.037 +/-…
HATS-25b through HATS-30b: A Half-dozen New Inflated Transiting Hot Jupiters from the HATSouth Survey
N. Espinoza, D. Bayliss, J. D. Hartman +19
We report six new inflated hot Jupiters (HATS-25b through HATS-30b) discovered using the HATSouth global network of automated telescopes. The planets orbit stars with magnitude…
HATS-11b and HATS-12b: Two transiting Hot Jupiters orbiting sub-solar metallicity stars selected for the K2 Campaign 7
M. Rabus, A. Jordán, J. D. Hartman +21
We report the discovery of two transiting extrasolar planets from the HATSouth survey. HATS-11, a V=14.1 G0-star shows a periodic 12.9 mmag dip in its light curve every 3.6192 days…
An independent discovery of two hot Jupiters from the K2 mission
Rafael Brahm, Matías Jones, Néstor Espinoza +9
We report the discovery of two hot Jupiters using photometry from Campaigns 4 and 5 of the two-wheeled Kepler (K2) mission. K2-30b has a mass of , a radius of $…
Limb-darkening and exoplanets II: Choosing the Best Law for Optimal Retrieval of Transit Parameters
Néstor Espinoza, Andrés Jordán
Very precise measurements of exoplanet transit lightcurves both from ground and space based observatories make it now possible to fit the limb-darkening coefficients in the transit…
Discovery and Validation of a High-Density sub-Neptune from the K2 Mission
Néstor Espinoza, Rafael Brahm, Andrés Jordán +12
We report the discovery of BD+20594b, a high density sub-Neptune exoplanet, made using photometry from Campaign 4 of the two-wheeled Kepler (K2) mission, ground-based radial veloci…