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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64 papers · 2 filters
The Physical Properties of the SVS 13 Protobinary System: Two Circumstellar Disks and a Spiraling Circumbinary Disk in the Making
Ana K. Diaz-Rodriguez, Guillem Anglada, Guillermo Blázquez-Calero +13
We present VLA and ALMA observations of the close (0.3" = 90 au separation) protobinary system SVS 13. We detect two small circumstellar disks (radii 12 and 9 au in dus…
Probing the low-mass end of the companion mass function for O-type stars
M. Reggiani, A. Rainot, H. Sana +6
Almost all massive stars are part of a binary system. Given the wide range of separations at which these companions are found, several observational techniques have been adopted to…
The extended atmosphere and circumstellar environment of the cool evolved star VX Sagittarii as seen by MATISSE
A. Chiavassa, K. Kravchenko, M. Montargès +50
Context. VX Sgr is a cool, evolved, and luminous red star whose stellar parameters are difficult to determine, which affects its classification. Aims. We aim to spatially resolve t…
Estimating fundamental parameters of nearby M dwarfs from SPIRou spectra
P. I. Cristofari, J. -F. Donati, T. Masseron +10
We present the results of a study aiming at retrieving the fundamental parameters of M dwarfs from spectra secured with SPIRou, the near-infrared high-resolution spectropolarimeter…
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…
Interferometric detections of sdO companions orbiting three classical Be stars
R. Klement, G. H. Schaefer, D. R. Gies +17
Classical Be stars are possible products of close binary evolution, in which the mass donor becomes a hot, stripped O or B-type subdwarf (sdO/sdB), and the mass gainer spins up and…
Binary-object spectral-synthesis in 3D (BOSS-3D) -- Modelling H-alpha emission in the enigmatic multiple system LB-1
L. Hennicker, N. D. Kee, T. Shenar +5
Context: To quantitatively decode the information stored within an observed spectrum, detailed modelling of the physical state and accurate radiative transfer solution schemes are…
VLTI-MATISSE L- and N-band aperture-synthesis imaging of the unclassified B[e] star FS Canis Majoris
K. -H. Hofmann, A. Bensberg, D. Schertl +58
Context: FS Canis Majoris (FS CMa, HD 45677) is an unclassified B[e] star surrounded by an inclined dust disk. The evolutionary stage of FS CMa is still debated. Perpendicular to t…
Chemical survey of Class I protostars with the IRAM-30m
S. Mercimek, C. Codella, L. Podio +6
Class I protostars are a bridge between Class 0 protostars, and Class II protoplanetary disks. Recent studies show gaps and rings in the dust distribution of disks younger than 1 M…
The magnetic field and magnetosphere of Plaskett's star: A fundamental shift in our understanding of the system
J. H. Grunhut, G. A. Wade, C. P. Folsom +7
Plaskett's "star" appears to be one of a small number of short-period binary systems known to contain a hot, massive, magnetic star. Building on the 2013 discovery investigation, w…
The Effects of Starspots on Spectroscopic Mass Estimates of Low-mass Young Stars
C. Flores, M. S. Connelley, B. Reipurth +1
Magnetic fields and mass accretion processes create dark and bright spots on the surface of young stars. These spots manifest as surface thermal inhomogeneities, which alter the gl…
Which Part of Dense Cores Feeds Material to Protostars?: The Case of L1489 IRS
Jinshi Sai, Nagayoshi Ohashi, Anaëlle J. Maury +4
We have conducted mapping observations () of the Class I protostar L1489 IRS using the 7-m array of the Atacama Compact Array (ACA) and the IRAM-30m telescope in t…
Time evolution of magnetic activity cycles in young suns: The curious case of kappa Ceti
S. Boro Saikia, T. Lueftinger, C. P. Folsom +15
A detailed investigation of the magnetic properties of young Sun-like stars can provide valuable information on our Sun's magnetic past and its impact on the early Earth. We determ…
The GRAVITY Young Stellar Object survey. VII. The inner dusty disks of T Tauri stars
The GRAVITY Collaboration, K. Perraut, L. Labadie +55
These protoplanetary disks in T Tauri stars play a central role in star and planet formation. We spatially resolve at sub-au scales the innermost regions of a sample of T Tauri's d…
The T Tauri star V410 Tau in the eyes of SPIRou and TESS
Benjamin Finociety, Jean-François Donati, Baptiste Klein +16
We report results of a spectropolarimetric and photometric monitoring of the weak-line T Tauri star V410 Tau based on data collected mostly with SPIRou, the near-infrared (NIR) spe…
Beyond the dips of V807 Tau, a spectropolarimetric study of a dipper s magnetosphere
Kim Pouilly, Jérôme Bouvier, Evelyne Alecian +6
We aim to characterize the magnetospheric accretion process in the young stellar object V807 Tau, one of the most stable dippers revealed by K2 in the Taurus star forming region. W…
The GRAVITY Young Stellar Object survey VIII. Gas and dust faint inner rings in the hybrid disk of HD141569
GRAVITY Collaboration, V. Ganci, L. Labadie +60
The formation and evolution of planetary systems impact the primordial accretion disk. HD141569 is the only known pre-main sequence star characterized by a hybrid disk. Observation…
Molecules with ALMA at Planet-forming Scales (MAPS) XIII: HCO and disk ionization structure
Yuri Aikawa, Gianni Cataldi, Yoshihide Yamato +25
We observed HCO and HCO emission towards the five protoplanetary disks around IM Lup, GM Aur, AS 209, HD 163296, and MWC 480 as part of the MAPS proj…
Molecules with ALMA at Planet-forming Scales (MAPS) XI: CN and HCN as Tracers of Photochemistry in Disks
Jennifer B. Bergner, Karin I. Oberg, Viviana V. Guzman +23
UV photochemistry in the surface layers of protoplanetary disks dramatically alters their composition relative to previous stages of star formation. The abundance ratio CN/HCN has…
Refined fundamental parameters of Canopus from combined near-IR interferometry and spectral energy distribution
A. Domiciano de Souza, J. Zorec, F. Millour +3
Canopus, the brightest and closest yellow supergiant to our Solar System, offers a unique laboratory for understanding the physics of evolved massive stars. The accurate and precis…
PENELLOPE II. CVSO 104: a pre-main sequence close binary with an optical companion in Ori OB1
A. Frasca, H. M. J. Boffin, C. F. Manara +14
We present results of our study of the close pre-main sequence spectroscopic binary CVSO 104 in Ori OB1, based on data obtained within the PENELLOPE legacy program. We derive, for…
Discovery of eight 'Main-sequence Radio Pulse emitters' using the GMRT: clues to the onset of coherent radio emission in hot magnetic stars
Barnali Das, Poonam Chandra, Matt E. Shultz +6
'Main-sequence radio pulse-emitters' (MRPs) are magnetic early-type stars from which periodic radio pulses, produced via electron cyclotron maser emission (ECME), are observed. Des…
The HD 98800 quadruple pre-main sequence system. Towards full orbital characterisation using long-baseline infrared interferometry
S. Zúñiga-Fernández, J. Olofsson, A. Bayo +8
HD 98800 is a young ( Myr old) and nearby ( pc) quadruple system, composed of two spectroscopic binaries orbiting around each other (AaAb and BaBb), with a gas-rich…
Molecules with ALMA at Planet-forming Scales (MAPS). X. Studying deuteration at high angular resolution toward protoplanetary disks
Gianni Cataldi, Yoshihide Yamato, Yuri Aikawa +26
Deuterium fractionation is dependent on various physical and chemical parameters. Thus, the formation location and thermal history of material in the solar system is often studied…