The rotational evolution of low-mass stars (2009)
Irwin, Jonathan, Bouvier, Jerome
We summarise recent progress in the understanding of the rotational evolution of low-mass stars (here defined as solar mass down to the hydrogen burning limit) both in terms of observations and...
The Monitor project: Rotation periods of low-mass stars in M50 (2008)
Irwin, Jonathan, Aigrain, Suzanne, Bouvier, Jerome, Hebb, Leslie, Hodgkin, Simon, Irwin, Mike, ...
We report on the results of a time-series photometric survey of M50 (NGC 2323), a ~130 Myr open cluster, carried out using the CTIO 4m Blanco telescope and Mosaic-II detector as part of the Monitor...
The role of magnetic fields in governing the angular momentum evolution of solar-type stars (2008)
I review the development of ideas regarding the angular momentum evolution of solar-type stars, from the early 60's to the most recent years. Magnetic fields are the central agent that dictates the...
The timescale over which planets may form in the circumstellar disks of young stars is one of the main issues of current planetary formation models. We present here new constraints on planet...
Metal-rich T-dwarfs in the Hyades cluster (2008)
Bouvier, Jerome, Kendall, Tim, Meeus, Gwendolyn
We present the results of a search for brown dwarfs (BDs) and very low mass (VLM) stars in the 625 Myr-old, metal-rich ([Fe/H]=0.14) Hyades cluster. We performed a deep (I=23, z=22.5) photometric...
Methane T-Dwarf Candidates in the Star Forming Region IC 348 (2008)
Burgess, Andrew, Bouvier, Jerome, Moraux, Estelle
IC 348 is a young (t$\sim$3Myr) and nearby (d$\sim$340pc) star forming region in the Perseus molecular cloud. We performed a deep imaging survey using the MEGACAM (z-band) and WIRCAM (JHK and...
Lithium depletion and the rotational history of exoplanet host stars (2008)
Israelian et al. (2004) reported that exoplanet host stars are lithium depleted compared to solar-type stars without detected massive planets, a result recently confirmed by Gonzalez (2008). We...
Lithium depletion and the rotational history of exoplanet host stars (2008)
Israelian et al. (2004) reported that exoplanet host stars are lithium depleted compared to solar-type stars without detected massive planets, a result recently confirmed by Gonzalez (2008). We...
Lithium depletion and the rotational history of exoplanet host stars (2008)
Israelian et al. (2004) reported that exoplanet host stars are lithium depleted compared to solar-type stars without detected massive planets, a result recently confirmed by Gonzalez (2008). We...
Metal-rich T-dwarfs in the Hyades cluster (2008)
Bouvier, Jerome, Kendall, Tim, Meeus, Gwendolyn
We present the results of a search for brown dwarfs (BDs) and very low mass (VLM) stars in the 625 Myr-old, metal-rich ([Fe/H]=0.14) Hyades cluster. We performed a deep (I=23, z=22.5) photometric...
Methane T-Dwarf Candidates in the Star Forming Region IC 348 (2008)
Burgess, Andrew, Bouvier, Jerome, Moraux, Estelle
IC~348 is a young (t$\sim$3Myr) and nearby (d$\sim$340pc) star forming region in the Perseus molecular cloud. We performed a deep imaging survey using the MEGACAM (z-band) and WIRCAM (JHK and...
Metal-rich T-dwarfs in the Hyades cluster (2008)
Bouvier, Jerome, Kendall, Tim, Meeus, Gwendolyn
We present the results of a search for brown dwarfs (BDs) and very low mass (VLM) stars in the 625 Myr-old, metal-rich ([Fe/H]=0.14) Hyades cluster. We performed a deep (I=23, z=22.5) photometric...
Methane T-Dwarf Candidates in the Star Forming Region IC 348 (2008)
Burgess, Andrew, Bouvier, Jerome, Moraux, Estelle
IC~348 is a young (t$\sim$3Myr) and nearby (d$\sim$340pc) star forming region in the Perseus molecular cloud. We performed a deep imaging survey using the MEGACAM (z-band) and WIRCAM (JHK and...
The timescale over which planets may form in the circumstellar disks of young stars is one of the main issues of current planetary formation models. We present here new constraints on planet...
The timescale over which planets may form in the circumstellar disks of young stars is one of the main issues of current planetary formation models. We present here new constraints on planet...
The role of magnetic fields in governing the angular momentum evolution of solar-type stars (2008)
I review the development of ideas regarding the angular momentum evolution of solar-type stars, from the early 60's to the most recent years. Magnetic fields are the central agent that dictates the...
The role of magnetic fields in governing the angular momentum evolution of solar-type stars (2008)
I review the development of ideas regarding the angular momentum evolution of solar-type stars, from the early 60's to the most recent years. Magnetic fields are the central agent that dictates the...
The rotational evolution of young low mass stars (2007)
Star-disk interaction is thought to drive the angular momentum evolution of young stars. In this review, I present the latest results obtained on the rotational properties of low mass and very low...
Irwin, Jonathan, Hodgkin, Simon, Aigrain, Suzanne, Bouvier, Jerome, Hebb, Leslie, Irwin, Mike, ...
We report on the results of a time-series photometric survey of NGC 2362, carried out using the CTIO 4m Blanco telescope and Mosaic-II detector as part of the Monitor project. Rotation periods were...
The Monitor project: Rotation of low-mass stars in the open cluster NGC 2547 (2007)
Irwin, Jonathan, Hodgkin, Simon, Aigrain, Suzanne, Bouvier, Jerome, Hebb, Leslie, Moraux, Estelle
We report on the results of an I-band time-series photometric survey of NGC 2547 using the MPG/ESO 2.2m telescope with WFI, achieving better than 1% photometric precision per data point over 14
Irwin, Jonathan, Aigrain, Suzanne, Hodgkin, Simon, Stassun, Keivan G., Hebb, Leslie, Irwin, Mike, ...
We report the discovery of a low-mass (0.26 +/- 0.02, 0.15 +/- 0.01 Msol) pre-main-sequence eclipsing binary with a 5.3 day orbital period. JW 380 was detected as part of a high-cadence time-resolved...
The lower mass function of the young open cluster Blanco 1: from 30 Mjup to 3 Mo (2007)
Moraux, Estelle, Bouvier, Jerome, Stauffer, John, Navascues, David Barrado Y, Cuillandre, Jean-Charles
We performed a deep wide field optical survey of the young (~100-150 Myr) open cluster Blanco1 to study its low mass population well down into the brown dwarf regime and estimate its mass function...
The Monitor project: Rotation of low-mass stars in the open cluster NGC 2516 (2007)
Irwin, Jonathan, Hodgkin, Simon, Aigrain, Suzanne, Hebb, Leslie, Bouvier, Jerome, Clarke, Cathie, ...
We report on the results of an i-band time-series photometric survey of NGC 2516 using the CTIO 4m Blanco telescope and 8k Mosaic-II detector, achieving better than 1% photometric precision per data...
The lower mass function of the young open cluster Blanco 1: from 30 Mjup to 3 Mo (2007)
Moraux, Estelle, Bouvier, Jerome, Stauffer, John, Barrado Y Navascues, David, Cuillandre, Jean-Charles
We performed a deep wide field optical survey of the young (~100-150 Myr) open cluster Blanco1 to study its low mass population well down into the brown dwarf regime and estimate its mass function...
The rotational evolution of young low mass stars (2007)
Star-disk interaction is thought to drive the angular momentum evolution of young stars. In this review, I present the latest results obtained on the rotational properties of low mass and very low...
The rotational evolution of young low mass stars (2007)
Star-disk interaction is thought to drive the angular momentum evolution of young stars. In this review, I present the latest results obtained on the rotational properties of low mass and very low...
The lower mass function of the young open cluster Blanco 1: from 30 Mjup to 3 Mo (2007)
Moraux, Estelle, Bouvier, Jerome, Stauffer, John, Barrado Y Navascues, David, Cuillandre, Jean-Charles
We performed a deep wide field optical survey of the young (~100-150 Myr) open cluster Blanco1 to study its low mass population well down into the brown dwarf regime and estimate its mass function...
The XMM-Newton Optical Monitor Survey of the Taurus Molecular Cloud (2006)
Audard, Marc, Briggs, Kevin, Grosso, Nicolas, Guedel, Manuel, Scelsi, Luigi, Bouvier, Jerome, ...
The Optical Monitor (OM) on-board XMM-Newton obtained optical/ultraviolet data for the XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST), simultaneously with the X-ray detectors. With...
Binary Stars in the Orion Nebula Cluster (2006)
Koehler, Rainer, Petr-Gotzens, Monika G., McCaughrean, Mark J., Bouvier, Jerome, Duchene, Gaspard, Quirrenbach, Andreas, ...
We report on a high-spatial-resolution survey for binary stars in the periphery of the Orion Nebula Cluster, at 5 - 15 arcmin (0.65 - 2 pc) from the cluster center. We observed 228 stars with...
The Monitor project: Rotation of low-mass stars in the open cluster M34 (2006)
Irwin, Jonathan, Aigrain, Suzanne, Hodgkin, Simon, Irwin, Mike, Bouvier, Jerome, Clarke, Cathie, ...
We report on the results of a V and i-band time-series photometric survey of M34 (NGC 1039) using the Wide Field Camera (WFC) on the Isaac Newton Telescope (INT), achieving better than 1% precision...
Direct magnetic field detection in the innermost regions of an accretion disc (2005)
Donati, Jean-Francois, Paletou, Frederic, Bouvier, Jerome, Ferreira, Jonathan
Models predict that magnetic fields play a crucial role in the physics of astrophysical accretion disks and their associated winds and jets. For example, the rotation of the disk twists around the...
Direct magnetic field detection in the innermost regions of an accretion disc (2005)
Donati, Jean-Francois, Paletou, Frederic, Bouvier, Jerome, Ferreira, Jonathan
Models predict that magnetic fields play a crucial role in the physics of astrophysical accretion disks and their associated winds and jets. For example, the rotation of the disk twists around the...
James, David J., Melo, Claudio, Santos, Nuno C., Bouvier, Jerome
Aims: The primary motivation for this project is to search for metal-rich star forming regions, in which, stars of super-solar metallicity will be created, as hopefully, will be extra-solar planets...
Direct magnetic field detection in the innermost regions of an accretion disc (2005)
Donati, Jean-Francois, Paletou, Frederic, Bouvier, Jerome, Ferreira, Jonathan
Models predict that magnetic fields play a crucial role in the physics of astrophysical accretion disks and their associated winds and jets. For example, the rotation of the disk twists around the...
Direct magnetic field detection in the innermost regions of an accretion disc (2005)
Donati, Jean-Francois, Paletou, Frederic, Bouvier, Jerome, Ferreira, Jonathan
Models predict that magnetic fields play a crucial role in the physics of astrophysical accretion disks and their associated winds and jets. For example, the rotation of the disk twists around the...
Low-mass substellar candidates in NGC 2264 (2004)
Kendall, Tim, Bouvier, Jerome, Moraux, Estelle, James, David
NGC 2264 is a young (3 Myr), populous star forming region for which our optical studies have revealed a very high density of potential brown dwarf (BD) candidates - 236 in less than 1 sq. deg. - from...
On the origin of brown dwarfs and free-floating planetary mass objects (2003)
Kroupa, Pavel, Bouvier, Jerome
(abridged) Sub-stellar mass objects have fundamentally different binary properties than stars implying that they cannot have the same formation history. They are rather unfinished stars having either...
The dynamical evolution of Taurus--Auriga-type aggregates (2003)
Kroupa, Pavel, Bouvier, Jerome
(abridged) Star formation in the Taurus--Auriga (TA) molecular clouds is producing binary-rich aggregates containing at most a few dozen systems within a region spanning one pc without massive stars....
A Substellar Mass Function for Alpha Per (2002)
Navascues, David Barrado Y, Bouvier, Jerome, Stauffer, John R., Lodieu, Nicolas, McCaughrean, Mark J.
We present a deep, wide-field optical survey of the young stellar cluster Alpha Per, in which we have discovered a large population of candidate brown dwarfs. Subsequent infrared photometric...
The Binarity of Herbig Ae/Be Stars Observed with Adaptive Optics (2001)
Patrice Corporon, Jerome Bouvier, Jean-luc Beuzit
We have done a large systematic search for HAeBe binaries using CFH (and ESO) Adaptive Optics (AO) systems. Among the 68 HAeBe stars observed, 30 binaries (18 discovered) have been detected. Based on...
Navascués, D. Barrado Y, Stauffer, John R., Bouvier, Jerome, Martín, Eduardo L.
We present very deep and accurate photometry of the open cluster M35 (VRIc filters). We have covered a region of 27.5x27.5 square arcmin. The data range from Ic=12.5 to 23.5 mag, and the color...
Accretion in Taurus PMS binaries: a spectroscopic study (1999)
Duchene, Gaspard, Monin, Jean-Louis, Bouvier, Jerome, Menard, Francois
We present low-resolution optical spectra of each component of 10 T Tauri (TT) binary systems with separations ranging from 0.9" to 3.5" and located in the Taurus star-forming region. We derive the...
Duchene, Gaspard, Bouvier, Jerome, Simon, Theodore
We report on a near-infrared adaptive optics survey of a sample of 66 low-mass members of the pre-main sequence stellar cluster IC 348. We find 12 binary systems in the separation range 0.1-8.0...
Brandner, Wolfgang, Bouvier, Jerome, Grebel, Eva K., Tessier, Eric, De Winter, Dolf, Beuzit, Jean-Luc
Using adaptive optics at the ESO 3.6m telescope, we obtained diffraction limited JHK-images of the region around the Herbig AeBe star NX Pup. We clearly resolved the close companion (sep. 0.128") to...