Results 81 to 90 of about 45,240 (301)

Hidden Binaries in Star-forming Regions

The Astrophysical Journal
A significant fraction of, and possibly all, stars form in binary or multiple systems. For solar-mass stars in the Galactic field, the distribution of orbital separations is log-normal over 7 orders of magnitude, from 10 ^−2  to 10 ^5 au.
Mary H. Rawcliffe, Nathan Griffiths-Janvier, Richard J. Parker   +2 more
doaj   +1 more source

The High Angular Resolution Multiplicity of Massive Stars

, 2008
We present the results of a speckle interferometric survey of Galactic massive stars that complements and expands upon a similar survey made over a decade ago.
Alzner, Alzner, Alzner, Baize, Baize, Baize, Baize, Barnaby, Brendley, Brendley, Brian D. Mason, Clarke, Couteau, Couteau, Couteau, Cvetkovic, Cvetkovic, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Docobo, Douglas R. Gies, ESA, Espin, Fekel, Finsen, Finsen, Finsen, Finsen, Finsen, Finsen, Finsen, Finsen, Forveille, Gies, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Hartkopf, Harvey, Harvin, Heintz, Heintz, Heintz, Heintz, Heintz, Heintz, Heintz, Heintz, Holden, Honig, Hoogerwerf, Horch, Hummel, Hummel, Isobe, Isobe, John W. Helsel, Lane, Leonard, Ling, Ling, Ling, Ling, Mante, Mante, Mante, Mante, Mante, Mante, Mante, Mason, Mason, Mason, Mason, Mason, Mason, Mason, Mason, Maíz-Apellániz, Maíz-Apellániz, Mourao, Muller, Nelan, Niemela, Nys, Olevic, Olevic, Olevic, Olevic, Olevic, Olevic, Olevic, Patience, Penny, Petr, Popovic, Romero, Romero, Romero, Romero, Rossiter, Scardia, Scardia, Scardia, Seymour, Seymour, Seymour, Seymour, Seymour, Simon, Starikova, Starikova, Starikova, Söderhjelm, Tamazian, Todd J. Henry, Tokovinin, Tokovinin, Turner, Turner, van den Bos, Vanbeveren, Walborn, Weigelt, William I. Hartkopf, Zaera, Zirm, Zirm, Zulevic, Zulevic, Öpik   +150 more
core   +1 more source

A Scalable, Durable, Fire‐Safe All‐Day Passive Radiative Cooling Coating for Sustainable Buildings

Advanced Functional Materials, EarlyView.
This study reports a scalable, durable coating that combines a fire‑retardant copolymer adhesive, hollow glass microspheres, and boron oxide to achieve passive radiative cooling with over 94% solar reflectance and >95% mid‑infrared emissivity. The coating maintains performance after UV and rain exposure and exhibits UL‑94 V‑0 fire resistance, enabling ...
Zhewen Ma, Yuanhao Feng, Alex Y. Song, Toan Dinh, Min Hong, John Bell, Boyou Hou, Pingan Song, Wei Zheng   +8 more
wiley   +1 more source

The 2021 Hot-type Symbiotic Outburst of YY Herculis: An Optical Follow-up Study

The Astrophysical Journal
We have followed up on the hot-type classical symbiotic outburst reported in YY Her using the Himalayan Chandra Telescope. The outburst coincides with the secondary minima of the system.
L. S. Sonith, U. S. Kamath
doaj   +1 more source

Binary stars in the RAVE survey

EPJ Web of Conferences, 2012
We searched the sample of RAVE survey spectra for both types of spectroscopic binary stars in order to estimate their number in the sample and perform a study on newly discovered binaries.
Zwitter T., Matijevič G., Munari U.
doaj   +1 more source

Three New Galactic Center X-ray Sources Identified with Near-Infrared Spectroscopy

, 2013
We have conducted a near-infrared spectroscopic survey of 47 candidate counterparts to X-ray sources discovered by the Chandra X-ray Observatory near the Galactic Center (GC).
Bandyopadhyay, Reba M., Bauer, Franz E., Blum, Robert, DeWitt, Curtis, Eikenberry, Stephen S., Olsen, Knut, Sarajedini, Ata, Sellgren, Kris   +7 more
core   +1 more source

Multi‐Ion Doping Controlled CEI Formation in Structurally‐Stable High‐Energy Monoclinic‐Phase NASICON Cathodes for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
The graphical abstract illustrates the synthesis pathway, morphological feature, and thermodynamic feasibility of entropy‐engineered NASICON cathodes for sodium‐ion batteries. Abstract Overcoming the energy density limitations of sodium‐ion batteries (NIBs) requires innovative strategies to optimize cathode materials.
Sharad Dnyanu Pinjari, Vignesh Mahalingam, Purandas Mudavath, Malavika Aarayil, Tasdique Arman, Ipsita Pal, Dipan Kundu, Raghavan Ranganathan, Ashok Kumar Nanjundan, Rohit Ranganathan Gaddam   +9 more
wiley   +1 more source

Hidden in Plain Sight: Searching for Dark Companions to Bright Stars with the Large Binocular Telescope and SHARK-VIS

The Astrophysical Journal
We report the results from a pilot study to search for black holes and other dark companions in binary systems using direct imaging with SHARK-VIS and the iLocater pathfinder “Lili” on the Large Binocular Telescope.
D. M. Rowan, T. A. Thompson, C. S. Kochanek, G. Li Causi, J. Roth, P. Vaccari, F. Pedichini, R. Piazzesi, S. Antoniucci, V. Testa, M. C. Johnson, J. Crass, J. R. Crepp, A. Bechter, E. B. Bechter, B. L. Sands, R. J. Harris, B. J. Fulton   +17 more
doaj   +1 more source

RoHS‐Compliant, Cu‐Zn‐In‐Se‐Based Core/Multi‐shell Quantum Dots with Efficient and Tunable Short‐Wave Infrared Emission

Advanced Functional Materials, EarlyView.
An innovative combination of size‐controlled template synthesis, partial cation exchange reactions, and dual shell passivation offers a new class of RoHS‐compliant, heavy metal‐free Cu‐Zn‐In‐Se/ZnS/Al2O3 core/shell/shell quantum dots (QDs), exhibiting long‐range tunability, highly efficient SWIR emission with remarkably narrow photoluminescence ...
Avijit Saha, Morena Cervino, Hossein Roshan, René Hübner, Angelika Wrzesińska‐Lashkova, Christine Steinbach, Yana Vaynzof, Francesco Di Stasio, Vladimir Lesnyak   +8 more
wiley   +1 more source

Binary Analysis and Period Study of the Long-period, High-mass-ratio Contact Binary KIC 7766185

The Astronomical Journal
We present an in-depth photometric and spectroscopic study of the contact binary KIC 7766185. Spectroscopic observations were conducted on the Mayall 4 m telescope at Kitt Peak National Observatory and used to extract radial velocities.
Conor M. Larsen, Andrej Prša
doaj   +1 more source