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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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44 papers · 2 filters
A framework to combine low- and high-resolution spectroscopy for the atmospheres of transiting exoplanets
M. Brogi, M. Line, J. Bean +2
Current observations of the atmospheres of close-in exoplanets are predominantly obtained with two techniques: low-resolution spectroscopy with space telescopes and high-resolution…
The depletion of water during dispersal of planet-forming disk regions
A. Banzatti, K. M. Pontoppidan, C. Salyk +3
We present a new velocity-resolved survey of 2.9 m spectra of hot HO and OH gas emission from protoplanetary disks, obtained with CRIRES at the VLT ( 3 km s)…
K2-60b and epic 216468514b. A sub-jovian and a jovian planet from the k2 mission
Philipp Eigmüller, Davide Gandolfi, Carina M. Persson +20
We report the characterization and independant detection of K2-60b, as well as the detection and characterization of EPIC 216468514b, two transiting hot gaseous planets from the K2…
Shadows and spirals in the protoplanetary disk HD 100453
M. Benisty, T. Stolker, A. Pohl +46
Understanding the diversity of planets requires to study the morphology and the physical conditions in the protoplanetary disks in which they form. We observed and spatially resolv…
The mid-IR water and silicate relation in protoplanetary disks
S. Antonellini, J. Bremer, I. Kamp +7
Mid-IR water lines from protoplanetary disks around T Tauri stars have a detection rate of 50\%. Models have identified multiple physical properties of disks such as dust-to-gas ma…
EPIC 219388192 b - an inhabitant of the brown dwarf desert in the Ruprecht 147 open cluster
Grzegorz Nowak, Enric Palle, Davide Gandolfi +32
We report the discovery of EPIC 219388192 b, a transiting brown dwarf in a 5.3-day orbit around a member star of Ruprecht-147, the oldest nearby open cluster association, which was…
Can dead zones create structures like a transition disk?
Paola Pinilla, Mario Flock, Maria de Juan Ovelar +1
[Abridged] Regions of low ionisation where the activity of the magneto-rotational instability is suppressed, the so-called dead zones, have been suggested to explain gaps and asymm…
Three radial gaps in the disk of TW Hydrae imaged with SPHERE
Roy van Boekel, Thomas Henning, Jonathan Menu +24
We present scattered light images of the TW Hya disk performed with SPHERE in PDI mode at 0.63, 0.79, 1.24 and 1.62 micron. We also present H2/H3-band ADI observations. Three disti…
BP Piscium: its flaring disk imaged with SPHERE/ZIMPOL
J. de Boer, J. H. Girard, H. Canovas +9
Whether BP Piscium (BP Psc) is either a pre-main sequence T Tauri star at d ~ 80 pc, or a post-main sequence G giant at d ~ 300 pc is still not clear. As a first-ascent giant, it i…
Multiple rings in the transition disk and companion candidates around RXJ1615.3-3255. High contrast imaging with VLT/SPHERE
J. de Boer, G. Salter, M. Benisty +36
We search for signs of ongoing planet-disk interaction and study the distribution of small grains at the surface of the transition disk around RXJ1615.3-3255 (RX J1615). We observe…
Exoplanetary atmospheric sodium revealed by the orbital motion. Narrow-band transmission spectroscopy of HD 189733b with UVES
S. Khalafinejad, C. von Essen, H. J. Hoeijmakers +8
During primary transits, the spectral signatures of an exoplanet atmosphere can be measured using transmission spectroscopy. The goal of this work is to accurately measure the atom…
The rate of stellar encounters along a migrating orbit of the Sun
C. A. Martínez-Barbosa, L. Jílková, S. Portegies Zwart +1
The frequency of Galactic stellar encounters the Solar system experienced depends on the local density and velocity dispersion along the orbit of the Sun in the Milky Way galaxy. W…
K2-99: a subgiant hosting a transiting warm Jupiter in an eccentric orbit and a long-period companion
A. M. S. Smith, D. Gandolfi, O. Barragán +30
We report the discovery from K2 of a transiting planet in an 18.25-d, eccentric (0.19 0.04) orbit around K2-99, an 11th magnitude subgiant in Virgo. We confirm the planetary n…
Grand challenges in protoplanetary disc modelling
Thomas J. Haworth, John D. Ilee, Duncan H. Forgan +18
The Protoplanetary Discussions conference --- held in Edinburgh, UK, from 7th --11th March 2016 --- included several open sessions led by participants. This paper reports on the di…
Direct detection of scattered light gaps in the transitional disk around HD 97048 with VLT/SPHERE
C. Ginski, T. Stolker, P. Pinilla +28
We studied the well known circumstellar disk around the Herbig Ae/Be star HD 97048 with high angular resolution to reveal undetected structures in the disk, which may be indicative…
Constraints on the size and dynamics of the J1407b ring system
Steven Rieder, Matthew A. Kenworthy
Context. J1407 (1SWASP J140747.93-394542.6 in full) is a young star in the Scorpius-Centaurus OB association that underwent a series of complex eclipses over 56 days in 2007. To ex…
Atmospheric characterization of Proxima b by coupling the Sphere high-contrast imager to the Espresso spectrograph
C. Lovis, I. Snellen, D. Mouillet +17
Context. The temperate Earth-mass planet Proxima b is the closest exoplanet to Earth and represents what may be our best ever opportunity to search for life outside the Solar Syste…
ALMA reveals the anatomy of the mm-sized dust and molecular gas in the HD 97048 disk
Catherine Walsh, Attila Juhász, Gwendolyn Meeus +5
Transitional disks show a lack of excess emission at infrared wavelengths due to a large dust cavity, that is often corroborated by spatially resolved observations at ~ mm waveleng…
Dusty tails of evaporating exoplanets. II. Physical modelling of the KIC 12557548b light curve
R. van Lieshout, M. Min, C. Dominik +7
Evaporating rocky exoplanets, such as KIC 12557548b, eject large amounts of dust grains, which can trail the planet in a comet-like tail. When such objects occult their host star,…
Spirals in protoplanetary disks from photon travel time
M. Kama, P. Pinilla, A. N. Heays
Spiral structures are a common feature in scattered-light images of protoplanetary disks, and of great interest as possible tracers of the presence of planets. However, other mecha…
K2-98 b: A 32-M Neptune-sized planet in a 10-day orbit transiting an F8 star
Oscar Barragán, Sascha Grziwa, Davide Gandolfi +21
We report the discovery of K2-98 b (EPIC 211391664 b), a transiting Neptune-sized planet monitored by the K2 mission during its campaign 5. We combine the K2 time-series data with…
Cometary ices in forming protoplanetary disc midplanes
Maria N. Drozdovskaya, Catherine Walsh, Ewine F. van Dishoeck +5
Low-mass protostars are the extrasolar analogues of the natal Solar System. Sophisticated physicochemical models are used to simulate the formation of two protoplanetary discs from…
Setting the volatile composition of (exo)planet-building material. Does chemical evolution in disk midplanes matter?
Christian Eistrup, Catherine Walsh, Ewine F. van Dishoeck
[Abridged] Chemical evolution in the protoplanetary disk midplane can modify the composition of ices and gases. We have investigated if and how chemical evolution affects the abund…
Vortices and spirals in the HD135344B transition disk
Nienke van der Marel, Paolo Cazzoletti, Paola Pinilla +1
In recent years spiral structures have been seen in scattered light observations and signs of vortices in millimeter images of protoplanetary disks, both probably linked with the p…