910 citations · 13.7k across the 253 of their papers we have counts for
61 papers · 1 filter
VLT/MUSE detection of accretion-ejection associated with the close stellar companion in the HT Lup system
Sebastián Jorquera, Mickaël Bonnefoy, Laura M. Pérez +14
The accretion/ejection processes in T-Tauri stars are fundamental to their physical evolution, while also impacting the properties and evolution of the circumstellar material at a…
VLTI/GRAVITY Provides Evidence the Young, Substellar Companion HD 136164 Ab formed like a "Failed Star"
William O. Balmer, L. Pueyo, S. Lacour +93
Young, low-mass Brown Dwarfs orbiting early-type stars, with low mass ratios (), appear intrinsically rare and present a formation dilemma: could a handful of these…
VLTI/GRAVITY Observations and Characterization of the Brown Dwarf Companion HD 72946 B
W. O. Balmer, L. Pueyo, T. Stolker +96
Tension remains between the observed and modeled properties of substellar objects, but objects in binary orbits, with known dynamical masses can provide a way forward. HD 72946 B i…
Combining Hipparcos and Gaia data for the study of binaries: the BINARYS tool
A. Leclerc, C. Babusiaux, F. Arenou +6
Orbital motion in binary and planetary systems is the main source of precise stellar and planetary mass measurements, and joint analysis of data from multiple observational methods…
Updated orbital monitoring and dynamical masses for nearby M-dwarf binaries
Per Calissendorff, Markus Janson, Laetitia Rodet +26
Young M-type binaries are particularly useful for precise isochronal dating by taking advantage of their extended pre-main sequence evolution. Orbital monitoring of these low-mass…
A Novel Survey for Young Substellar Objects with the W band Filter.V. IC 348 and Barnard 5 in the Perseus Cloud
Bhavana Lalchand, Wen-Ping Chen, Beth A. Biller +10
We report the discovery of substellar objects in the young star cluster IC 348 and the neighboring Barnard 5 dark cloud, both at the eastern end of the Perseus star-forming complex…
Dynamical masses for two M1 + mid-M dwarf binaries monitored during the SPHERE-SHINE survey
Beth A. Biller, Antoine Grandjean, Sergio Messina +25
We present orbital fits and dynamical masses for HIP 113201AB and HIP 36985AB, two M1 + mid-M dwarf binary systems monitored as part of the SPHERE SHINE survey. To robustly determi…
New binaries from the SHINE survey
M. Bonavita, R. Gratton, S. Desidera +67
We present the multiple stellar systems observed within the SpHere INfrared survey for Exoplanet (SHINE). SHINE searched for substellar companions to young stars using high contras…
Investigating three Sirius-like systems with SPHERE
R. Gratton, V. D'Orazi, T. A. Pacheco +61
Sirius-like systems are wide binaries composed of a white dwarf (WD) and a companion of a spectral type earlier than M0. The WD progenitor evolves in isolation, but its wind during…
Characterization of very wide companion candidates to young stars with planets and disks
F. Z. Majidi, S. Desidera, J. M. Alcalá +6
Discovering wide companions of stellar systems allows us to constrain the dynamical environment and age of the latter. We studied four probable wide companions of four different st…
Rotational spectral modulation of cloudless atmospheres for L/T Brown Dwarfs and Extrasolar Giant Planets
P. Tremblin, M. W. Phillips, A. Emery +5
The rotational spectral modulation (spectro-photometric variability) of brown dwarfs is usually interpreted as a sign of the presence of inhomogeneous cloud covers in the atmospher…
Characterising Young Visual M-dwarf Binaries with Near-Infrared Integral Field Spectra
Per Calissendorff, Markus Janson, Mickaël Bonnefoy
We present the results from an integral field spectroscopy study of seven close visual binary pairs of young M-dwarf multiple systems. The target systems are part of the astrometri…
Spitzer Variability Properties of Low-Gravity L Dwarfs
Johanna M. Vos, Beth A. Biller, Katelyn N. Allers +17
We present \textit{Spitzer Space Telescope} variability monitoring observations of three low-gravity L dwarfs with previous detections of variability in the near-IR, 2MASS J0045+16…
A Novel Survey for Young Substellar Objects with the W-band filter II. The Coolest and Lowest Mass Members of the Serpens-South Star-forming Region
Jessy Jose, Beth A. Biller, Loıc Albert +13
Given its relative proximity (~430 pc), compact size (< 20'), young age (~ 0.5 Myr) and rich number of young stellar objects, the Serpens-South star forming region is a promising s…
2MASS J15491331-3539118: a new low-mass wide companion of the GQ Lup system
J. M. Alcalá, F. Z. Majidi, S. Desidera +14
Substellar companions at wide separation around stars hosting planets or brown dwarfs (BDs) yet close enough for their formation in the circumstellar disc are of special interest.…
Spectral library of age-benchmark low-mass stars and brown dwarfs
E. Manjavacas, N. Lodieu, V. J. S. Béjar +3
In the past years, some extremely red brown dwarfs were found. They were believed to have low surface gravity, but many of their spectral characteristics were similar to those of h…
Investigating the nature of the extended structure around the Herbig star RCrA using integral field and high-resolution spectroscopy
E. Rigliaco, R. Gratton, D. Mesa +24
We present a detailed analysis of the extended structure detected around the young and close-by Herbig Ae/Be star RCrA. This is a young triple system with an intermediate mass cent…
The SPHERE view of the jet and the envelope of RY Tau
A. Garufi, L. Podio, F. Bacciotti +40
Jets are rarely associated with pre-main-sequence intermediate-mass stars. Optical and near-IR observations of jet-driving sources are often hindered by the presence of a natal env…
Exploring the RCrA environment with SPHERE: Discovery of a new stellar companion
D. Mesa, M. Bonnefoy, R. Gratton +39
Aims. R Coronae Australis (R CrA) is the brightest star of the Coronet nebula of the Corona Australis (CrA) star forming region. It has very red colors, probably due to dust absorp…
SPHERE dynamical and spectroscopic characterization of HD142527B
R. Claudi, A. -L. Maire, D. Mesa +50
We detect the accreting low-mass companion HD142527B at a separation of 73 mas (11.4 au) from the star. No other companions with mass greater than 10 MJ are visible in the field of…
Dynamical masses of M-dwarf binaries in young moving groups: II - Toward empirical mass-luminosity isochrones
Markus Janson, Stephen Durkan, Mickael Bonnefoy +6
Low-mass stars exhibit substantial pre-main sequence evolution during the first ~100 Myrs of their lives. Thus, young M-type stars are prime targets for isochronal dating, especial…
Mapping of shadows cast on a protoplanetary disk by a close binary system
V. D'Orazi, R. Gratton, S. Desidera +47
For a comprehensive understanding of planetary formation and evolution, we need to investigate the environment in which planets form: circumstellar disks. Here we present high-cont…
A Search for Variability in Exoplanet Analogues and Low-Gravity Brown Dwarfs
Johanna M. Vos, Beth A. Biller, Mariangela Bonavita +18
We report the results of a -band survey for photometric variability in a sample of young, low-gravity objects using the New Technology Telescope (NTT) and the United Kingdom Inf…
Orbital characterization of GJ1108A system, and comparison of dynamical mass with model-derived mass for resolved binaries
T. Mizuki, M. Kuzuhara, K. Mede +55
We report an orbital characterization of GJ1108Aab that is a low-mass binary system in pre-main-sequence phase. Via the combination of astrometry using adaptive optics and radial v…