10.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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- University of GenevaCH577 papers
50 papers · 2 filters
The genealogical tree of ethanol: gas-phase formation of glycolaldehyde, acetic acid and formic acid
Dimitrios Skouteris, Nadia Balucani, Cecilia Ceccarelli +5
Despite the harsh conditions of the interstellar medium, chemistry thrives in it, especially in star forming regions where several interstellar complex organic molecules (iCOMs) ha…
The lithium-rotation connection in the 125 Myr-old Pleiades cluster
J. Bouvier, D. Barrado, E. Moraux +9
The evolution of lithium abundance over a star's lifetime is indicative of transport processes operating in the stellar interior. We revisit the relationship between lithium conten…
SPIRou Input Catalogue: Global properties of 440 M dwarfs observed with ESPaDOnS at CFHT
Pascal Fouqué, Claire Moutou, Lison Malo +13
Present and future high-precision radial-velocity spectrometers dedicated to the discovery of low-mass planets orbiting low-mass dwarfs need to focus on the best selected stars to…
HD 156324: a tidally locked magnetic triple spectroscopic binary with a disrupted magnetosphere
M. Shultz, Th. Rivinius, G. A. Wade +3
HD 156324 is an SB3 (B2V/B5V/B5V) system in the Sco OB4 association. The He-strong primary possesses both a strong magnetic field, and H emission believed to originate in its Ce…
The evolution of surface magnetic fields in young solar-type stars II: The early main sequence (250-650 Myr)
C. P. Folsom, J. Bouvier, P. Petit +6
There is a large change in surface rotation rates of sun-like stars on the pre-main sequence and early main sequence. Since these stars have dynamo driven magnetic fields, this imp…
The Scuti pulsations of Pictoris as observed by ASTEP from Antarctica
D. Mékarnia, E. Chapellier, T. Guillot +13
The Antartica Search for Transiting Extrasolar Planets (ASTEP), an automatized 400 mm telescope located at Concordia station in Antarctica, monitored beta Pictoris continuously to…
Magnetic fields of intermediate mass T Tauri stars
A. Lavail, O. Kochukhov, G. A. J. Hussain +3
Aims. In this paper, we aim to measure the strength of the surface magnetic fields for a sample of five intermediate mass T Tauri stars and one low mass T Tauri star from late-F to…
The open flux evolution of a solar-mass star on the main sequence
V. See, M. Jardine, A. A. Vidotto +9
Magnetic activity is known to be correlated to the rotation period for moderately active main sequence solar-like stars. In turn, the stellar rotation period evolves as a result of…
HST Scattered Light Imaging and Modeling of the Edge-on Protoplanetary Disk ESO-H 569
Schuyler G. Wolff, Marshall D. Perrin, Karl Stapelfeldt +6
We present new HST ACS observations and detailed models for a recently discovered edge-on protoplanetary disk around ESO H 569 (a low-mass T Tauri star in the Cha I star forming…
Variability in stellar granulation and convective blueshift with spectral type and magnetic activity. II. From young to old main-sequence K-G-F stars
Nadège Meunier, Lucile Mignon, Anne-Marie Lagrange
The inhibition of small-scale convection in the Sun dominates the long-term radial velocity (RV) variability: it therefore has a critical effect on light exoplanet detectability us…
Seeds Of Life In Space (SOLIS): The organic composition diversity at 300--1000 au scale in Solar-type star forming regions
C. Ceccarelli, P. Caselli, F. Fontani +43
Complex organic molecules have been observed for decades in the interstellar medium. Some of them might be considered as small bricks of the macromolecules at the base of terrestri…
ALMA discovery of a rotating SO/SO flow in HH212. A possible MHD disk wind?
B. Tabone, S. Cabrit, E. Bianchi +7
We wish to constrain the possible contribution of a magnetohydrodynamic disk wind (DW) to the HH212 molecular jet. We mapped the flow base with ALMA Cycle 4 at 0.13" 60 au re…
Direct mapping of the temperature and velocity gradients in discs. Imaging the vertical CO snow line around IM Lupi
C. Pinte, F. Menard, G. Duchene +14
Accurate measurements of the physical structure of protoplanetary discs are critical inputs for planet formation models. These constraints are traditionally established via complex…
Impact of convection and resistivity on angular momentum transport in dwarf novae
N. Scepi, G. Lesur, G. Dubus +1
The eruptive cycles of dwarf novae (DN) are thought to be due to a thermal-viscous instability in the accretion disk surrounding the white dwarf (WD). This model has long been know…
The programme "accurate masses for SB2 components"
Jean-Louis Halbwachs, Frédéric Arenou, Henri M. J. Boffin +11
Accurate stellar masses are requested in order to improve our understanding of stellar interiors, but they are still rather rare. Fortunately, the forthcoming Gaia Mission will pro…
Deuterated methanol on Solar System scale around the HH212 protostar
E. Bianchi, C. Codella, C. Ceccarelli +13
Context: Methanol is thought to be mainly formed during the prestellar phase and its deuterated form keeps memory of the conditions at that epoch. Thanks to the unique combination…
Nitrogen and hydrogen fractionation in high-mass star forming cores from observations of HCN and HNC
L. Colzi, F. Fontani, P. Caselli +3
The ratio between the two stable isotopes of nitrogen, N and N, is well measured in the terrestrial atmosphere (), and in the pre-Solar nebula ().…
A near-infrared interferometric survey of debris-disk stars. VI. Extending the exozodiacal light survey with CHARA/JouFLU
Paul D. Nunez, N. J. Scott, B. Mennesson +11
We report the results of high-angular-resolution observations that search for exozodiacal light in a sample of main sequence stars and sub-giants. Using the "jouvence" of the fiber…
SPIRou Input Catalog: Activity, Rotation and Magnetic Field of Cool Dwarfs
C. Moutou, E. M. Hebrard, J. Morin +7
Based on optical high-resolution spectra obtained with CFHT/ESPaDOnS, we present new measurements of activity and magnetic field proxies of 442 low-mass K5-M7 dwarfs. The objects w…
The wind and the magnetospheric accretion onto the T Tauri star S Coronae Australis at sub-au resolution
R. Garcia Lopez, K. Perraut, A. Caratti o Garatti +70
To investigate the inner regions of protoplanetary disks, we performed near-infrared interferometric observations of the classical TTauri binary system S CrA. We present the first…
In-depth study of moderately young but extremely red, very dusty substellar companion HD206893B
P. Delorme, T. Schmidt, M. Bonnefoy +47
The substellar companion HD206893b has recently been discovered by direct imaging of its disc-bearing host star with the SPHERE instrument. We investigate the atypical properties o…
Magnetic activity and radial velocity filtering of young Suns: The weak-line T Tauri stars Par 1379 and Par 2244
C. A. Hill, A. Carmona, J. -F. Donati +5
We report the results of our spectropolarimetric monitoring of the weak-line T-Tauri stars (wTTSs) Par 1379 and Par 2244, within the MaTYSSE (Magnetic Topologies of Young Stars and…
Consistent dust and gas models for protoplanetary disks: II. Chemical networks and rates
Inga Kamp, Wing-Fai Thi, Peter Woitke +3
Aims. We define a small and large chemical network which can be used for the quantitative simultaneous analysis of molecular emission from the near-IR to the submm. We revise react…
A 80 au cavity in the disk around HD 34282
G. van der Plas, F. Menard, H. Canovas +5
Context: Large cavities in disks are important testing grounds for the mechanisms proposed to drive disk evolution and dispersion, such as dynamical clearing by planets and photo-e…