Showing 2020 · astro-ph.EPShow all

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astro-ph.EP2020★ 44 cited

Mercury's crustal thickness correlates with lateral variations in mantle melt production

Mikael Beuthe, Bernard Charlier, Olivier Namur +2

Mercury's crust has a complex structure resulting from a billion years of volcanism. The surface variations in chemical composition have been identified from orbit by the spacecraf…

astro-ph.EP2020★ 49 cited

Planet Hunters TESS II: Findings from the first two years of TESS

Nora L. Eisner, Oscar Barragán, Chris Lintott +23

We present the results from the first two years of the Planet Hunters TESS citizen science project, which identifies planet candidates in the TESS data by engaging members of the g…

astro-ph.EP2020★ 39 cited

ARES IV: Probing the atmospheres of the two warm small planets HD 106315 c and HD 3167 c with the HST/WFC3 camera

Gloria Guilluy, Amélie Gressier, Sam Wright +27

We present an atmospheric characterization study of two medium sized planets bracketing the radius of Neptune: HD 106315 c (R=4.98 0.23 R) and HD 3167 c…

astro-ph.EP2020★ 11 cited

VIBES: VIsual Binary Exoplanet survey with SPHERE Upper limits on wide S-planet and S-BD frequencies, triple system discovery, and astrometric confirmation of 20 stellar binaries and three triple systems

J. Hagelberg, N. Engler, C. Fontanive +7

Recent surveys indicate that planets in binary systems are more abundant than previously thought, which is in agreement with theoretical work on disc dynamics and planet formation…

astro-ph.EP2020★ 79 cited

Two Directly Imaged, Wide-orbit Giant Planets around the Young, Solar Analog TYC 8998-760-1

Alexander J. Bohn, Matthew A. Kenworthy, Christian Ginski +9

Even though tens of directly imaged companions have been discovered in the past decades, the number of directly confirmed multiplanet systems is still small. Dynamical analysis of…

astro-ph.EP2020★ 169 cited

Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) IV. A spectral inventory of atoms and molecules in the high-resolution transmission spectrum of WASP-121 b

H. J. Hoeijmakers, J. V. Seidel, L. Pino +22

Aims: We survey the transmission spectrum of WASP-121 b for line-absorption by metals and molecules at high spectral resolution, and elaborate on existing interpretations of the op…

astro-ph.EP2020★ 51 cited

ARES III: Unveiling the Two Faces of KELT-7 b with HST WFC3

William Pluriel, Niall Whiteford, Billy Edwards +24

We present the analysis of the hot-Jupiter KELT-7b using transmission and emission spectroscopy from the Hubble Space Telescope (HST), both taken with the Wide Field Camera 3 (WFC3…

astro-ph.EP2020★ 29 cited

Indications for very high metallicity and absence of methane for the eccentric exo-Saturn WASP-117b

Ludmila Carone, Paul Mollière, Yifan Zhou +12

We investigate the atmospheric composition of the long period ( 10 days), eccentric exo-Saturn WASP-117b. WASP-117b could be in atmospheric temperature and chemistry…

astro-ph.EP2020★ 74 cited

ARES II: Characterising the Hot Jupiters WASP-127 b, WASP-79 b and WASP-62 b with HST

Nour Skaf, Michelle Fabienne Bieger, Billy Edwards +24

This paper presents the atmospheric characterisation of three large, gaseous planets: WASP-127b, WASP-79b and WASP-62b. We analysed spectroscopic data obtained with the G141 grism…

astro-ph.EP2020★ 75 cited

ARES I: WASP-76 b, A Tale of Two HST Spectra

Billy Edwards, Quentin Changeat, Robin Baeyens +25

We analyse the transmission and emission spectra of the ultra-hot Jupiter WASP-76b, observed with the G141 grism of the Hubble Space Telescope's Wide Field Camera 3 (WFC3). We redu…

astro-ph.EP2020★ 46 cited

Precise mass and radius of a transiting super-Earth planet orbiting the M dwarf TOI-1235: a planet in the radius gap?

P. Bluhm, R. Luque, N. Espinoza +78

We report the confirmation of a transiting planet around the bright, inactive M0.5 V star TOI-1235 (TYC 4384-1735-1, V = 11.5 mag), whose transit signal was detected in the photome…

astro-ph.EP2020★ 23 cited

The effect of CO-H2O collisions in the rotational excitation of cometary CO

A. Faure, F. Lique, J. Loreau

We present the first accurate rate coefficients for the rotational excitation of CO by H2O in the kinetic temperature range 5-100 K. The statistical adiabatic channel method (SACM)…