Results 81 to 90 of about 12,301 (190)

Spectral and spatial imaging of the Be+sdO binary phi Persei [PDF]

, 2015
The rapidly rotating Be star phi Persei was spun up by mass and angular momentum transfer from a now stripped-down, hot subdwarf companion. Here we present the first high angular resolution images of phi Persei made possible by new capabilities in ...
Baron, F., Benisty, M., Berio, P., Brummelaar, T. ten, Che, X., Clausse, J. M., Farrington, C., Gies, D., Grundstrom, E. D., Kraus, S., Ligi, R., McAlister, H., Meilland, A., Millour, F., Monnier, J. D., Mourard, D., Nardetto, N., Pedretti, E., Perraut, K., Ridgway, S. T., Schaefer, G., Spang, A., Stee, P., Sturmann, J., Sturmann, L., Tallon-Bosc, I., Turner, N., Zhao, M.   +27 more
core   +2 more sources

Metasurface‐Encoded Single‐Pixel Hyperspectral Imaging

Advanced Photonics Research, Volume 7, Issue 1, January 2026.
A metasurface‐enabled single‐pixel hyperspectral imaging approach is proposed, achieving sub‐2‐nanometer spectral discrimination and accurate reconstruction at low sampling ratios. By uniting advanced nanophotonics with data‐driven algorithms, this framework overcomes limitations of conventional single‐pixel imaging and sets a new benchmark for compact
Haitao Nie, Yaping Zhao, Yifei Zhang, Yanmin Zhu, Jingyan Chen, Yunfei Tian, Edmund Y. Lam   +6 more
wiley   +1 more source

Physical Orbit for Lambda Virginis and a Test of Stellar Evolution Models [PDF]

, 2006
Lambda Virginis (LamVir) is a well-known double-lined spectroscopic Am binary with the interesting property that both stars are very similar in abundance but one is sharp-lined and the other is broad-lined.
A. Claret, A. F. Boden, Baldwin J. E., Balona L. A., Blackwell D. E., Budaj J., Budaj J., Burnashev V. I., Campbell W. W., Claret A., Colacevich A., E. Pedretti, F. Malbet, F. P. Schloerb, G. Torres, Gray D. F., Hut P., J. D. Monnier, J.‐P. Berger, K. Perraut, Latham D. W., Levato A., M. G. Lacasse, M. Zhao, Moon T. T., N. P. Carleton, Napiwotzki R., Nordstrom B., P. Kern, R. Millan‐Gabet, Sadakane K., Smalley B., Stickland D. J., van’t Veer-Menneret C., W. A. Traub, Zahn J.-P., Zahn J.-P.   +36 more
core   +5 more sources

Time‐Domain Near‐Field Scanning Microscopy of Terahertz Metasurfaces

Advanced Photonics Research, Volume 7, Issue 1, January 2026.
Time‐domain near‐field scanning terahertz microscopy provides direct access to subwavelength electromagnetic fields on metasurfaces. By combining controlled polarization excitation with nanoscale probing, this technique enables quantitative visualization of localized hotspots, surface‐wave propagation, and wavefront manipulation, offering a powerful ...
Ruxue Wei, Soren Petersen, Weili Zhang
wiley   +1 more source

A Parameter Study of Classical Be Star Disk Models Constrained by Optical Interferometry

, 2008
We have computed theoretical models of circumstellar disks for the classical Be stars $\kappa$ Dra, $\beta$ Psc, and $\upsilon$ Cyg. Models were constructed using a non-LTE radiative transfer code developed by \citet{sig07} which incorporates a number of
C. E. Jones, C. Tycner, Clarke D., Cote J., D. J. Hutter, Hirata R., J. A. Benson, Juza K., Porter J. M., T. A. A. Sigut, van Kerkwijk M. H., Waters L. B. F. M., Waters L. B. F. M.   +12 more
core   +1 more source

Dynamical Masses for Pre-Main Sequence Stars: A Preliminary Physical Orbit for V773 Tau A [PDF]

, 2007
We report on interferometric and radial-velocity observations of the double-lined 51-d period binary (A) component of the quadruple pre-main sequence (PMS) system V773 Tau.
Andrea M. Ghez, Andrew F. Boden, Anneila I. Sargent, Baraffe I., D'Antona F., David A. Boboltz, David W. Latham, Dobashi K., Eduardo Ros, Guillermo Torres, John M. Carpenter, Karl M. Menten, Kenneth J. Johnston, Leinert C., Lestrade J.-F., Maria Massi, Martin E., Montalban J., Nordstrom B., Rachel L. Akeson, Siess L.   +20 more
core   +3 more sources

Monolithic Silicon Photonic Transceiver for 160 km Multi‐Channel Quantum Entanglement Distribution in Fiber Network

Laser &Photonics Reviews, Volume 20, Issue 1, 8 January 2026.
The paper demonstrates a chip scale (4.5 x 4.5 mm2) silicon integrated system that is capable of distributing entangled photons over 160 km single mode fibers without dispersion compensations and external optical filters. The results highlight the potential for massive production and large‐scale deployed quantum integrated circuits for a future ...
Yue Qin, Hongnan Xu, Hon Ki Tsang
wiley   +1 more source

Visual Orbits of Wolf–Rayet Stars. I. The Orbit of the Dust-producing Wolf–Rayet Binary WR 137 Measured with the CHARA Array

The Astrophysical Journal
Classical Wolf–Rayet (W-R) stars are the descendants of massive OB stars that have lost their hydrogen envelopes and are burning helium in their cores prior to exploding as Type Ib/c supernovae.
Noel D. Richardson, Gail H. Schaefer, Jan J. Eldridge, Rebecca Spejcher, Amanda Holdsworth, Ryan M. Lau, John D. Monnier, Anthony F. J. Moffat, Gerd Weigelt, Peredur M. Williams, Stefan Kraus, Jean-Baptiste Le Bouquin, Narsireddy Anugu, Sorabh Chhabra, Isabelle Codron, Jacob Ennis, Tyler Gardner, Mayra Gutierrez, Noura Ibrahim, Aaron Labdon, Cyprien Lanthermann, Benjamin R. Setterholm   +21 more
doaj   +1 more source

Discovery of Extremely Large-Amplitude Quasi-Periodic Photometric Variability in WC9-Type Wolf-Rayet Binary, WR 104

, 2002
We discovered that the Wolf-Rayet (WR)+OB star binary, WR 104, renowned for its associated "dusty pinwheel nebula" recently spatially resolved with infrared interferometry, exhibits strong quasi-periodic optical variations with a full amplitude of 2.7 ...
Haseda, K., Kato, T., Takamizawa, K., Yamaoka, H.   +3 more
core   +1 more source

The multiplicity of massive stars in the Orion Nebula cluster as seen with long-baseline interferometry [PDF]

, 2013
The characterization of multiple stellar systems is an important ingredient for testing current star formation models. Stars are more often found in multiple systems, the more massive they are.
Grellmann, Rebekka, Helminiak, Krzysztof, Kraus, Stefan, Preibisch, Thomas, Ratzka, Thorsten, Zinnecker, Hans   +5 more
core   +1 more source