Results 91 to 100 of about 12,301 (190)

The Algol triple system spatially resolved at optical wavelengths

, 2010
Interacting binaries typically have separations in the milli-arcsecond regime and hence it has been challenging to resolve them at any wavelength. However, recent advances in optical interferometry have improved our ability to discern the components in ...
Armstrong, Buscher, Csizmadia, ESA, Evans, Hartkopf, Heintz, Hill, Hummel, Kovalevsky, Labeyrie, Lindegren, Prieur, Prieur, Shepherd, Shepherd, Söderhjelm, van Moorsel   +17 more
core   +1 more source

Searching for faint companions with VLTI/PIONIER. I. Method and first results [PDF]

, 2011
Context. A new four-telescope interferometric instrument called PIONIER has recently been installed at VLTI. It provides improved imaging capabilities together with high precision. Aims.
A.-M. Lagrange, Absil, Absil, Absil, Absil, B. Lazareff, Baraffe, Berger, Boccaletti, Bordé, Bouchet, Chauvin, Che, Di Folco, Di Folco, Duvert, G. Chauvin, G. Zins, Goldin, Hinkley, J.-B. Le Bouquin, J.-P. Berger, Kalas, Kervella, L. Jocou, Lacour, Lagrange, Lagrange, Le Bouquin, Marois, Mawet, McAlister, Mérand, O. Absil, Oppenheimer, P. Haguenauer, P. Kern, R. Millan-Gabet, S. Rochat, W. Traub, Zhao   +40 more
core   +5 more sources

Binary Stars Take What They Get: Evidence for Efficient Mass Transfer from Stripped Stars with Rapidly Rotating Companions

The Astrophysical Journal Letters
Binary stars and their interactions shape the formation of compact binaries, supernovae, and gravitational-wave sources. The efficiency of mass transfer—the fraction of mass retained by the accretor during binary interaction—is a critical parameter that ...
Thibault Lechien, Selma E. de Mink, Ruggero Valli, Amanda C. Rubio, Lieke A. C. van Son, Robert Klement, Harim Jin, Onno Pols   +7 more
doaj   +1 more source

Interferometric view into RT Pav’s long secondary period

Astronomy & Astrophysics
Context. Long secondary periods (LSPs) occur in roughly one third of evolved stars, yet their origin remains uncertain. Two leading hypotheses are oscillatory convective modes and a binary companion enshrouded in dust. Aims. We investigate the LSP in the
Courtney-Barrer B., Haubois X., Wood P., Dionese D., Decin L., Paladini C., El Mellah I., Defrère D., Ireland M.   +8 more
doaj   +1 more source

An interferometric mid-infrared study of the eruptive star binary Z CMa with MATISSE/VLTI

Astronomy & Astrophysics
Aims . The current work is part of a series aimed at producing the first ever mid-infrared images of protoplanetary disks in the binary system of eruptive stars Z CMa and studying their individual properties. Methods . We obtained high-
F. Lykou, J. Varga, F. Cruz-Saénz de Miera, P. Ábrahám, Á. Kóspál, B. Lopez, T. Henning, S. Wolf, G. Weigelt, F. Millour, M. Hogerheijde, L. Chen, T. Ratzka, W. Danchi, P. Boley, J.-C. Augereau, P. Priolet   +16 more
openaire   +2 more sources

Ruling out Stellar Companions and Resolving the Innermost Regions of Transitional Disks with the Keck Interferometer

, 2009
With the Keck Interferometer, we have studied at 2 um the innermost regions of several nearby, young, dust depleted "transitional" disks. Our observations target five of the six clearest cases of transitional disks in the Taurus/Auriga star-forming ...
Akeson, Akeson, Andrea M. Ghez, Brown, Brown, Calvet, Calvet, D'Alessio, Duchêne, Elise Furlan, Espaillat, Espaillat, Espaillat, Flaherty, Furlan, Furlan, Ghez, Ghez, Hollenbach, Ireland, Jorg-Uwe Pott, Lada, Leinert, Marshall D. Perrin, Mathieu, McCabe, Meyer, Muzerolle, Muzerolle, Palla, Pinte, Quillen, Salyk, Schneider, Sicilia-Aguilar, Simon, Skrutskie, Stanimir Metchev, Stassun, Tannirkulam, Tom M. Herbst, Varnière   +41 more
core   +1 more source

Direct diameter measurement of a star filling its Roche Lobe: The semi-detached binary SS Leporis spatially resolved with VINCI/VLTI [PDF]

, 2007
Stellar evolution in close binary systems is strongly influenced by mass transfer from one star to the other when one component fills its zero-velocity surface or Roche Lobe.
Acke, B., van Aarle, E., Verhoelst, T.
core   +1 more source

Evidence for an Accretion Bridge in the DX Cha Circumbinary System from VLTI/MATISSE Observations

The Astrophysical Journal
DX Cha (HD 104237) is a spectroscopic binary consisting of a Herbig A7.5Ve–A8Ve primary star and a K3-type companion. Here we report on new 3.55 μ m interferometric observations of this source with the Multi Aperture Mid-Infrared Spectroscopic Experiment
Tímea Juhász, József Varga, Péter Ábrahám, Ágnes Kóspál, Foteini Lykou, Lei Chen, Attila Moór, Fernando Cruz-Sáenz de Miera, Bruno Lopez, Alexis Matter, Roy van Boekel, Michiel Hogerheijde, Margaux Abello, Jean-Charles Augereau, Paul Boley, William C. Danchi, Thomas Henning, Mathis Letessier, Jie Ma, Philippe Priolet, Marten Scheuck, Gerd Weigelt, Sebastian Wolf   +22 more
doaj   +1 more source

From the atmosphere to the circumstellar environment in cool evolved stars

, 2014
We discuss and illustrate contributions that optical interferometry has made on our current understanding of cool evolved stars. We include red giant branch (RGB) stars, asymptotic giant branch (AGB) stars, and red supergiants (RSGs).
Paladini, Claudia, Wittkowski, Markus
core   +1 more source

‘Exosomes’: The Hype, the Chasm, and Beyond

Journal of Extracellular Biology, Volume 5, Issue 2, February 2026.
Natasa Zarovni, Konstantin Glebov
wiley   +1 more source