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Biases in Exoplanet Transmission Spectra Introduced by Limb-darkening Parametrization
Coulombe, Louis-Philippe; Benneke, Björn; Roy, Pierre-Alexis
One of the main endeavors of the field of exoplanetary sciences is the characterization of exoplanet atmospheres on a population level. The current method of choice to accomplish this task is transmission spectroscopy, where the apparent radius of a transiting exoplanet is measured at multiple wavelengths in search of atomic and molecular absorpti…
Gaia BH1 and BH2 - evolutionary models with overshooting of the black hole progenitors within the present-day binary separation
Mazeh, T.; Gilkis, A.
Three black holes (BHs) in wide binaries - Gaia BH1, BH2, and BH3 - were recently discovered. The likely progenitors of the BHs were massive stars that experienced a supergiant phase, reaching radii of
The ESO SupJup Survey. III. Confirmation of 13CO in YSES 1 b and Atmospheric Detection of YSES 1 c with CRIRES+
Kesseli, Aurora Y.; Zhang, Yapeng; Gandhi, Siddharth +14 more
High-resolution spectroscopic characterization of young super-Jovian planets enables precise constraints on elemental and isotopic abundances of their atmospheres. As part of the ESO SupJup Survey, we present high-resolution spectral observations of two wide-orbit super-Jupiters in YSES 1 (or TYC 8998-760-1) using the upgraded VLT/CRIRES+
Disruption of a massive molecular cloud by a supernova in the Galactic Centre: Initial results from the ACES project
Immer, K.; Klessen, R. S.; Wang, Q. D. +33 more
The Milky Way's Central Molecular Zone (CMZ) differs dramatically from our local solar neighbourhood, both in the extreme interstellar medium conditions it exhibits (e.g. high gas, stellar, and feedback density) and in the strong dynamics at play (e.g. due to shear and gas influx along the bar). Consequently, it is likely that there are large-scal…
PEWDD: A database of white dwarfs enriched by exo-planetary material
Gänsicke, B. T.; Cunningham, T.; Izquierdo, P. +4 more
We present the Planetary Enriched White Dwarf Database (PEWDD), a collection of published photospheric abundances of white dwarfs accreting planetary debris alongside additional information relevant to metal-enrichment and the presence of infrared excesses, emission lines, and binary companions. At the time of publishing, PEWDD contains informatio…
On Its Way to the Neutron Star–White Dwarf Binary Graveyard, IGR J16194‑2810, A First Ascent M Giant X-Ray Binary
Fekel, Francis C.; Hinkle, Kenneth H.; Straniero, Oscar +5 more
A single-lined spectroscopic orbit for the M giant in the X-ray binary IGR J16194‑2810 is determined from a time series of optical spectra. The spectroscopic orbital period of 192.5 days is twice that of the photometric period, confirming that the M giant in the system is an ellipsoidal variable. The giant is identified as a first ascent giant app…
JWST Reveals CO Ice, Concentrated CO2 Deposits, and Evidence for Carbonates Potentially Sourced from Ariel's Interior
Hedman, Matthew M.; Grundy, William M.; Villanueva, Geronimo L. +21 more
The Uranian moon Ariel exhibits a diversity of geologically young landforms, with a surface composition rich in CO2 ice. The origin of CO2 and other species, however, remains uncertain. We report observations of Ariel's leading and trailing hemispheres, collected with NIRSpec (2.87–5.10 µm) on the James Webb Space Teles…
Mapping the core of the Tarantula Nebula with VLT-MUSE - III. A template for metal-poor starburst regions in the visual and far-ultraviolet
Castro, N.; Crowther, Paul A.
We present the integrated VLT-MUSE spectrum of the central 2 × 2 arcmin2 (30 × 30 pc2) of NGC 2070, the dominant giant H II region of the Tarantula Nebula in the Large Magellanic Cloud, together with an empirical far-ultraviolet spectrum constructed via LMC template stars from the ULLYSES survey and Hubble Tarantula Treasury …
Combining Gaia and GRAVITY: Characterising five new directly detected substellar companions
Lutz, D.; Förster Schreiber, N. M.; Genzel, R. +97 more
Precise mass constraints are vital for the characterisation of brown dwarfs and exoplanets. Here we present how the combination of data obtained by Gaia and GRAVITY can help enlarge the sample of substellar companions with measured dynamical masses. We show how the Non-Single-Star (NSS) two-body orbit catalogue contained in Gaia DR3 can be used to…
Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b
Alonso, R.; Deleuil, M.; Erikson, A. +79 more
Context. WASP-76 b has been a recurrent subject of study since the detection of a signature in high-resolution transit spectroscopy data indicating an asymmetry between the two limbs of the planet. The existence of this asymmetric signature has been confirmed by multiple studies, but its physical origin is still under debate. In addition, it contr…