Showing 2019 · astro-ph.EPShow all

29 papers · 2 filters

astro-ph.EP2019★ 11 cited

OGLE-2013-BLG-0911Lb: A Secondary on the Brown-Dwarf Planet Boundary around an M-dwarf

Shota Miyazaki, Takahiro Sumi, David P. Bennett +92

We present the analysis of the binary-lens microlensing event OGLE-2013-BLG-0911. The best-fit solutions indicate the binary mass ratio of q~0.03 which differs from that reported i…

astro-ph.EP2019★ 231 cited

Mass-Metallicity Trends in Transiting Exoplanets from Atmospheric Abundances of HO, Na, and K

Luis Welbanks, Nikku Madhusudhan, Nicole F. Allard +3

Atmospheric compositions can provide powerful diagnostics of formation and migration histories of planetary systems. We investigate constraints on atmospheric abundances of HO,…

astro-ph.EP2019★ 10 cited

XO-7 b: A transiting hot Jupiter with a massive companion on a wide orbit

Nicolas Crouzet, Brian F. Healy, Guillaume Hébrard +16

Transiting planets orbiting bright stars are the most favorable targets for follow-up and characterization. We report the discovery of the transiting hot Jupiter XO-7 b and of a se…

astro-ph.EP2019★ 27 cited

Circumbinary exoplanets and brown dwarfs with the Laser Interferometer Space Antenna

Camilla Danielski, Valeriya Korol, Nicola Tamanini +1

We explore the prospects for the detection of giant circumbinary exoplanets and brown dwarfs (BDs) orbiting Galactic double white dwarfs binaries (DWDs) with the Laser Interferomet…

astro-ph.EP2019★ 5 cited

Debris disks around stars in the NIKA2 era

J. -F. Lestrade, J. -C. Augereau, M. Booth +42

The new NIKA2 camera at the IRAM 30m radiotelescope was used to observe three known debris disks in order to constrain the SED of their dust emission in the millimeter wavelength d…

astro-ph.EP2019★ 40 cited

Transmission Spectroscopy of WASP-79b from 0.6 to 5.0 m

Kristin S. Sotzen, Kevin B. Stevenson, David K. Sing +18

As part of the PanCET program, we have conducted a spectroscopic study of WASP-79b, an inflated hot Jupiter orbiting an F-type star in Eridanus with a period of 3.66 days. Building…

astro-ph.EP2019★ 51 cited

The SOPHIE search for northern extrasolar planets. XVI. HD 158259: A compact planetary system in a near-3:2 mean motion resonance chain

N. C. Hara, F. Bouchy, M. Stalport +32

Since 2011, the SOPHIE spectrograph has been used to search for Neptunes and super-Earths in the Northern Hemisphere. As part of this observational program, 290 radial velocity mea…

astro-ph.EP2019★ 55 cited

WASP-127b transmission spectrum]{Abundance measurements of HO and carbon-bearing species in the atmosphere of WASP-127b confirm its super-solar metallicity

Jessica J. Spake, David K. Sing, Hannah R. Wakeford +14

The chemical abundances of exoplanet atmospheres may provide valuable information about the bulk compositions, formation pathways, and evolutionary histories of planets. Exoplanets…

astro-ph.EP2019★ 32 cited

Kojima-1Lb Is a Mildly Cold Neptune around the Brightest Microlensing Host Star

A. Fukui, D. Suzuki, N. Koshimoto +56

We report the analysis of additional multiband photometry and spectroscopy and new adaptive optics (AO) imaging of the nearby planetary microlensing event TCP J05074264+2447555 (Ko…

astro-ph.EP2019★ 12 cited

ROME/REA: A gravitational microlensing search for exo-planets beyond the snow-line on a global network of robotic telescopes

Yiannis Tsapras, R. A. Street, M. Hundertmark +10

Planet population synthesis models predict an abundance of planets with semi-major axes between 1-10 au, yet they lie at the edge of the detection limits of most planet finding tec…

astro-ph.EP2019★ 25 cited

Determining the mass of the planetary candidate HD 114762 b using Gaia

Flavien Kiefer

The first planetary candidate discovered by Latham et al. (1989) with radial velocities around a solar-like star other than the Sun, HD 114762 b, was detected with a minimum mass o…

astro-ph.EP2019★ 47 cited

Exoplanet characterisation in the longest known resonant chain: the K2-138 system seen by HARPS

T. A. Lopez, S. C. C. Barros, A. Santerne +36

The detection of low-mass transiting exoplanets in multiple systems brings new constraints to planetary formation and evolution processes and challenges the current planet formatio…

astro-ph.EP2019★ 11 cited

Non-adiabatic tidal oscillations induced by a planetary companion

Andrew Bunting, John C. B. Papaloizou, Caroline Terquem

We calculate the dynamical tides raised by a close planetary companion on non-rotating stars of and . Using the Henyey method, we sol…

astro-ph.EP2019★ 49 cited

Keck Observations Confirm a Super-Jupiter Planet Orbiting M-dwarf OGLE-2005-BLG-071L

David P. Bennett, Aparna Bhattacharya, Jean-Philippe Beaulieu +10

We present adaptive optics imaging from the NIRC2 instrument on the Keck-2 telescope that resolves the exoplanet host (and lens) star as it separates from the brighter source star.…

astro-ph.EP2019★ 47 cited

Revisiting MOA 2013 BLG-220L: A Solar-type star with a Cold super-Jupiter Companion

Aikaterini Vandorou, David P. Bennett, Jean-Philippe Beaulieu +7

We present the analysis of high-resolution images of MOA-2013-BLG-220, taken with the Keck adaptive optics system 6 years after the initial observation, identifying the lens as a s…

astro-ph.EP2019★ 46 cited

The Hubble PanCET program: An extensive search for metallic ions in the exosphere of GJ 436 b

L. A. dos Santos, D. Ehrenreich, V. Bourrier +15

(Abridged) The quiet M2.5 star GJ 436 hosts a warm Neptune that displays an extended atmosphere that dwarfs its own host star. Predictions of atmospheric escape in such planets sta…

astro-ph.EP2019★ 2 cited

ESA Voyage 2050 White Paper: Detecting life outside our solar system with a large high-contrast-imaging mission

Ignas Snellen, Simon Albrecht, Guillem Anglada-Escude +64

In this white paper, we recommend the European Space Agency plays a proactive role in developing a global collaborative effort to construct a large high-contrast imaging space tele…

astro-ph.EP2019★ 189 cited

The HST PanCET Program: Exospheric Mg II and Fe II in the Near-UV transmission spectrum of WASP-121b using Jitter Decorrelation

David K. Sing, Panayotis Lavvas, Gilda E. Ballester +17

We present HST near-ultraviolet (NUV) transits of the hot Jupiter WASP-121b, acquired as part of the PanCET program. Time series spectra during two transit events were used to meas…

astro-ph.EP2019★ 55 cited

Nearly Polar orbit of the sub-Neptune HD3167 c: Constraints on a multi-planet system dynamical history

Shweta Dalal, Guillaume Hébrard, Alain Lecavelier des Étangs +5

We present the obliquity measurement, that is, the angle between the normal angle of the orbital plane and the stellar spin axis, of the sub-Neptune planet HD3167 c, which transits…

astro-ph.EP2019★ 34 cited

OGLE-2018-BLG-1011L\lowercase{b,c}: Microlensing Planetary System with Two Giant Planets Orbiting a Low-mass Star

Cheongho Han, David P. Bennett, Andrzej Udalski +70

We report a multiplanetary system found from the analysis of microlensing event OGLE-2018-BLG-1011, for which the light curve exhibits a double-bump anomaly around the peak. We fin…

astro-ph.EP2019★ 3 cited

OGLE-2015-BLG-1649Lb: A gas giant planet around a low-mass dwarf

Masayuki Nagakane, Chien-Hsiu Lee, Naoki Koshimoto +66

We report the discovery of an exoplanet in microlensing event OGLE-2015-BLG-1649. The planet/host-star mass ratio is and the projected separation normalized…

astro-ph.EP2019★ 23 cited

Detecting the General Relativistic Orbital Precession of the Exoplanet HD 80606b

Luc Blanchet, Guillaume Hébrard, François Larrouturou

We investigate the relativistic effects in the orbital motion of the exoplanet HD80606b with a high eccentricity of .We propose a method to detect these effects (nota…

astro-ph.EP2019★ 9 cited

The ssos Pipeline: Identification of Solar System Objects in Astronomical Images

Max Mahlke, Enrique Solano, Hervé Bouy +3

Observatories and satellites around the globe produce tremendous amounts of imaging data to study many different astrophysical phenomena. The serendipitous observations of Solar Sy…

astro-ph.EP2019★ 6 cited

An analysis of binary microlensing event OGLE-2015-BLG-0060

Y. Tsapras, A. Cassan, C. Ranc +83

We present the analysis of stellar binary microlensing event OGLE-2015-BLG-0060 based on observations obtained from 13 different telescopes. Intensive coverage of the anomalous par…