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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73 papers · 2 filters
The Mass-Dependence of Angular Momentum Evolution in Sun-Like Stars
Sean P. Matt, A. Sacha Brun, Isabelle Baraffe +2
To better understand the observed distributions of rotation rate and magnetic activity of sun-like and low-mass stars, we derive a physically motivated scaling for the dependence o…
The VLTI / PIONIER near-infrared interferometric survey of southern T Tauri stars. I. First results
Fabien Anthonioz, François Ménard, Christophe Pinte +15
Context : The properties of the inner disks of bright Herbig AeBe stars have been studied with near infrared (NIR) interferometry and high resolution spectroscopy. The continuum an…
Herschel -PACS observations of [OI] and H2O in Cha II
P. Riviere-Marichalar, A. Bayo, I. Kamp +11
Gas plays a major role in the dynamical evolution of protoplanetary discs. Its coupling with the dust is the key to our understanding planetary formation. Studying the gas content…
The MiMeS Survey of Magnetism in Massive Stars: CNO surface abundances of Galactic O stars
F. Martins, A. Hervé, J. -C. Bouret +7
The evolution of massive stars is still partly unconstrained. Mass, metallicity, mass loss and rotation are the main drivers of stellar evolution. Binarity and magnetic field may a…
Rotation, spectral variability, magnetic geometry and magnetosphere of the Of?p star CPD -28 2561
G. A. Wade, R. H. Barbá, J. Grunhut +14
We report magnetic and spectroscopic observations and modeling of the Of?p star CPD -28 2561. Using more than 75 new spectra, we have measured the equivalent width variations and e…
Discovery of starspots on Vega - First spectroscopic detection of surface structures on a normal A-type star
T. Böhm, M. Holschneider, F. Lignières +8
The theoretically studied impact of rapid rotation on stellar evolution needs to be confronted with the results of high resolution spectroscopy-velocimetry observations. A weak sur…
Precession and accretion in circumbinary discs: The case of HD 104237
Alex Dunhill, Jorge Cuadra, Catherine Dougados
We present the results of smoothed particle hydrodynamics (SPH) simulations of the disc around the young, eccentric stellar binary HD 104237. We find that the binary clears out a l…
Herbig AeBe stars: Multiplicity and consequences
Gaspard Duchene
By virtue of their young age and intermediate mass, Herbig AeBe stars represent a cornerstone for our understanding of the mass-dependency of both the stellar and planetary formati…
Discovery of Time Variation of the Intensity of Molecular Lines in IRC+10216 in The Submillimeter and Far Infrared Domains
J. Cernicharo, D. Teyssier, G. Quintana-Lacaci +12
We report on the discovery of strong intensity variations in the high rotational lines of abundant molecular species towards the archetypical circumstellar envelope of IRC+10216. T…
Unveiling new stellar companions from the PIONIER exozodi survey
Lindsay Marion, Olivier Absil, Steve Ertel +2
The main goal of the EXOZODI survey is to detect and characterize circumstellar dust and to propose the first statistical study of exozodiacal disks in the near-infrared using tele…
Ultra weak magnetic fields in Am stars: Beta UMa and theta Leo
Aurore Blazère, Pascal Petit, François Lignières +3
An extremely weak circularly-polarized signature was recently discovered in spectral lines of the chemically peculiar Am star Sirius A (Petit et al. 2011). This signal was interpre…
Benchmark stars for Gaia: fundamental properties of the Population II star HD140283 from interferometric, spectroscopic and photometric data
O. Creevey, F. Thévenin, P. Berio +17
We determined the fundamental properties of HD 140283 by obtaining new interferometric and spectroscopic measurements and combining them with photometry from the literature. The in…
A resolved, au-scale gas disk around the B[e] star HD 50138
L. E. Ellerbroek, M. Benisty, S. Kraus +14
HD 50138 is a B[e] star surrounded by a large amount of circumstellar gas and dust. Its spectrum shows characteristics which may indicate either a pre- or a post-main-sequence syst…
The origin of complex organic molecules in prestellar cores
Charlotte Vastel, Cecilia Ceccarelli, Bertrand Lefloch +1
Complex organic molecules (COMs) have been detected in a variety of environments, including cold prestellar cores. Given the low temperature of these objects, these last detections…
Southern Massive Stars at High Angular Resolution: Observational Campaign and Companion Detection
H. Sana, J. -B. Le Bouquin, S. Lacour +12
Multiplicity is one of the most fundamental observable properties of massive O-type stars and offers a promising way to discriminate between massive star formation theories. Nevert…
Searching for faint companions with VLTI/PIONIER. II. 92 main sequence stars from the Exozodi survey
Lindsay Marion, Olivier Absil, Steve Ertel +6
The Exozodi survey aims to determine the occurrence rate of bright exozodiacal discs around nearby main sequence stars using infrared interferometry. Although the Exozodi survey ta…
Improving the surface brightness-color relation for early-type stars using optical interferometry
M. Challouf, N. Nardetto, D. Mourard +18
The aim of this work is to improve the SBC relation for early-type stars in the color domain, using optical interferometry. Observations of eight B- and A-type…
Orbital Monitoring of the AstraLux Large M-dwarf Multiplicity Sample
Markus Janson, Carolina Bergfors, Wolfgang Brandner +6
Orbital monitoring of M-type binaries is essential for constraining their fundamental properties. This is particularly useful in young systems, where the extended pre-main sequence…
The BinaMIcS project: understanding the origin of magnetic fields in massive stars through close binary systems
E. Alecian, C. Neiner, G. A. Wade +11
It is now well established that a fraction of the massive (M>8 Msun) star population hosts strong, organised magnetic fields, most likely of fossil origin. The details of the gener…
Young Stellar Object Variability (YSOVAR): Long Timescale Variations in the Mid-Infrared
L. M. Rebull, A. M. Cody, K. R. Covey +32
The YSOVAR (Young Stellar Object VARiability) Spitzer Space Telescope observing program obtained the first extensive mid-infrared (3.6 & 4.5 um) time-series photometry of the Orion…
Unbiased mm-wave Line Surveys of TW Hya and V4046 Sgr: The Enhanced C2H and CN Abundances of Evolved Protoplanetary Disks
Joel H. Kastner, Pierre Hily-Blant, David R. Rodriguez +2
We have conducted the first comprehensive mm-wave molecular emission line surveys of the evolved circumstellar disks orbiting the nearby T Tauri stars TW Hya and V4046 Sgr AB. Both…
Interpreting the extended emission around three nearby debris disc host stars
Jonathan P. Marshall, F. Kirchschlager, S. Ertel +7
Cool debris discs are a relic of the planetesimal formation process around their host star, analogous to the solar system's Edgeworth-Kuiper belt. As such, they can be used as a pr…
Molecules with a peptide link in protostellar shocks: a comprehensive study of L1157
E. Mendoza, B Lefloch, A. López-Sepulcre +4
Interstellar molecules with a peptide link -NH-C(=O)-, like formamide (NHCHO), acetamide (NHCOCH) and isocyanic acid (HNCO) are particularly interesting for their poten…
HD139614: the interferometric case for a group-Ib pre-transitional young disk
Lucas Labadie, Alexis Matter, Alexander Kreplin +7
The Herbig Ae star HD 139614 is a group-Ib object, which featureless SED indicates disk flaring and a possible pre-transitional evolutionary stage. We present mid- and near-IR inte…