Search Results - "Wyttenbach, Aurelien"
-
1
Atomic iron and titanium in the atmosphere of the exoplanet KELT-9b
Published in Nature (London) (01-08-2018)“…To constrain the formation history of an exoplanet, we need to know its chemical composition 1 – 3 . With an equilibrium temperature of about 4,050 kelvin 4 ,…”
Get full text
Journal Article -
2
Orbital misalignment of the Neptune-mass exoplanet GJ 436b with the spin of its cool star
Published in Nature (London) (25-01-2018)“…Mapping the three-dimensional trajectory of a Neptune-mass exoplanet across the disk of its cool star reveals that its orbit is nearly perpendicular to the…”
Get full text
Journal Article -
3
Sodium and Potassium Signatures of Volcanic Satellites Orbiting Close-in Gas Giant Exoplanets
Published in The Astrophysical journal (10-11-2019)“…Extrasolar satellites are generally too small to be detected by nominal searches. By analogy to the most active body in the solar system, Io, we describe how…”
Get full text
Journal Article -
4
Aerosol Constraints on the Atmosphere of the Hot Saturn-mass Planet WASP-49b
Published in The Astrophysical journal (10-11-2017)“…The strong, nearly wavelength-independent absorption cross section of aerosols produces featureless exoplanet transmission spectra, limiting our ability to…”
Get full text
Journal Article -
5
ATMOSPHERIX: II- Characterizing exoplanet atmospheres through transmission spectroscopy with SPIRou
Published in Monthly notices of the Royal Astronomical Society (01-01-2024)“…ABSTRACT In a companion paper, we introduced a publicly available pipeline to characterize exoplanet atmospheres through high-resolution spectroscopy. In this…”
Get full text
Journal Article -
6
ATMOSPHERIX: I- an open source high-resolution transmission spectroscopy pipeline for exoplanets atmospheres with SPIRou
Published in Monthly notices of the Royal Astronomical Society (01-01-2024)“…ABSTRACT Atmospheric characterization of exoplanets from the ground is an actively growing field of research. In this context, we have created the ATMOSPHERIX…”
Get full text
Journal Article -
7
Redshifted Sodium Transient near Exoplanet Transit
Published in Astrophysical journal. Letters (01-10-2024)“…Abstract Neutral sodium (Na i ) is an alkali metal with a favorable absorption cross section such that tenuous gases are easily illuminated at select…”
Get full text
Journal Article -
8
Sodium and Potassium Signatures of Volcanic Satellites Orbiting Close-in Gas Giant Exoplanets
Published 28-08-2019“…Extrasolar satellites are generally too small to be detected by nominal searches. By analogy to the most active body in the Solar System, Io, we describe how…”
Get full text
Journal Article -
9
Aerosol Constraints on the Atmosphere of the Hot Saturn-mass planet WASP-49b
Published 06-10-2017“…The strong, nearly wavelength-independent absorption cross section of aerosols produces featureless exoplanet transmission spectra, limiting our ability to…”
Get full text
Journal Article -
10
Combining low- to high-resolution transit spectroscopy of HD 189733b. Linking the troposphere and the thermosphere of a hot gas giant
Published 08-05-2018“…A&A 612, A53 (2018) Space-borne low-to medium-resolution (R~10^2-10^3) transmission spectroscopy of atmospheres detect the broadest spectral features (alkali…”
Get full text
Journal Article -
11
Atomic iron and titanium in the atmosphere of the exoplanet KELT-9b
Published 16-08-2018“…The chemical composition of an exoplanet is a key ingredient in constraining its formation history. Iron is the most abundant transition metal, but has never…”
Get full text
Journal Article -
12
Redshifted Sodium Transient near Exoplanet Transit
Published 29-09-2024“…Neutral sodium (Na I) is an alkali metal with a favorable absorption cross section such that tenuous gases are easily illuminated at select transiting…”
Get full text
Journal Article -
13
VELOcities of CEpheids (VELOCE) I. High-precision radial velocities of Cepheids
Published 25-04-2024“…A&A 686, A177 (2024) This first VELOCE data release comprises 18,225 high-precision RV measurements of 258 bona fide classical Cepheids on both hemispheres…”
Get full text
Journal Article -
14
Transmission spectroscopy of the ultra-hot Jupiter MASCARA-4 b: Disentangling the hydrostatic and exospheric regimes of ultra-hot Jupiters
Published 24-08-2022“…A&A 666, A47 (2022) Ultra-hot Jupiters (UHJs), rendering the hottest planetary atmospheres, offer great opportunities of detailed characterisation with…”
Get full text
Journal Article -
15
Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) VII. Detection of sodium on the long-transiting inflated sub-Saturn KELT-11 b
Published 01-09-2022“…A&A 668, A1 (2022) KELT-11b is an inflated sub-Saturn with a hot atmosphere and that orbits a bright evolved subgiant star, making it a prime choice for…”
Get full text
Journal Article -
16
A medium-resolution spectrum of the exoplanet HIP 65426 b
Published 04-12-2020“…A&A 648, A59 (2021) Medium-resolution integral-field spectrographs (IFS) coupled with adaptive-optics such as Keck/OSIRIS, VLT/MUSE, or SINFONI are appearing…”
Get full text
Journal Article -
17
The multi-planet system TOI-421 -- A warm Neptune and a super puffy mini-Neptune transiting a G9 V star in a visual binary
Published 27-11-2020“…2020AJ...160..114C We report the discovery of a warm Neptune and a hot sub-Neptune transiting TOI-421 (BD-14 1137, TIC 94986319), a bright (V=9.9) G9 dwarf…”
Get full text
Journal Article -
18
A Non-isothermal Theory for Interpreting Sodium Lines in Transmission Spectra of Exoplanets
Published 18-03-2015“…We present a theory for interpreting the sodium lines detected in transmission spectra of exoplanetary atmospheres. Previous analyses employed the isothermal…”
Get full text
Journal Article -
19
Orbital misalignment of the Neptune-mass exoplanet GJ 436b with the spin of its cool star
Published 18-12-2017“…The angle between the spin of a star and its planets' orbital planes traces the history of the planetary system. Exoplanets orbiting close to cool stars are…”
Get full text
Journal Article -
20
Populations of rotating stars III. SYCLIST, the new Geneva Population Synthesis code
Published 28-04-2014“…(abridged) We present a new tool for building synthetic colour-magnitude diagrams of coeval stellar populations. We study, from a theoretical point of view,…”
Get full text
Journal Article