Results 71 to 80 of about 44,651 (301)

Medium-resolution echelle spectroscopy of pulsating variables and exoplanet host stars with sub-meter telescopes [PDF]

, 2014
Here we present two of our interesting results obtained over the last 18 months from spectroscopic monitoring of binary pulsating stars and exoplanet host stars.
Cseh, B., Csák, B., Dózsa, Á., Jankovics, I., Kiss, L. L., Kovács, J., Szabados, L., Szabó, Gy. M.   +7 more
core   +1 more source

Z‐Scheme Water Splitting Systems Based on Solid‐State Electron Conductors

Advanced Functional Materials, EarlyView.
This review examines the latest advances in Z‐scheme overall water splitting (OWS) systems for solar hydrogen production. These systems consist of suspended or immobilized hydrogen evolution photocatalysts (HEPs) and oxygen evolution photocatalysts (OEPs).
Chen Gu, Takashi Hisatomi, Tsuyoshi Takata, Kazunari Domen   +3 more
wiley   +1 more source

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

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

Physical parameters of 62 eclipsing binary stars using the ASAS-3 data$-$I

, 2010
We present a detailed light curve analysis of publicly available V band observations of 62 binary stars, mostly contact binaries, obtained by the All Sky Automated Survey (ASAS)-3 project between 2000 and 2009.
Deb, Sukanta, Singh, Harinder P.
core   +1 more source

Enhancing Metal‐Support Interactions of Ru Catalysts via Relaxation of Oxygen Vacancies for Hydrogen Production

Advanced Functional Materials, EarlyView.
Designing stable Ru nanoparticle catalyst remains a critical challenge in electrochemical applications. Here, a strategy is presented to stabilize Ru catalysts by leveraging Ce‐doped ZrO2 supports (ZrCeO2‐x), which enhance catalyst durability and activity through electronic metal‐support interactions and stabilized oxygen vacancies.
Mansu Kim, Jonghwan Park, Hyuk Choi, Sohui Kim, Injoon Jang, Hyun You Kim, Namgee Jung, Sung Jong Yoo, Joseph T. Hupp, Dongmok Whang   +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

The Close Binary Fraction of Dwarf M Stars [PDF]

, 2012
We describe a search for close spectroscopic dwarf M star binaries using data from the Sloan Digital Sky Survey to address the question of the rate of occurrence of multiplicity in M dwarfs.
Blake, Cullen H., Clark, Benjamin M., Knapp, Gillian R.   +2 more
core  

Beyond the Beam: Exploring Charged Particle Nanoprinting

Advanced Functional Materials, EarlyView.
Charged particle nanoprinting using electrons and ions is highly advanced, offering great potential for research and industry. However, challenges in precursor design and process optimization persist, but also offer great opportunities to drive nanofabrication innovations.
Nicolas Paul Jochmann, Alba Salvador‐Porroche, Sven Barth   +2 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