Results 81 to 90 of about 141,590 (329)

Hubble space telescope spectroscopy of four luminous compact blue galaxies at intermediate redshift [PDF]

, 2004
This is an electronic version of an article published in The Astronomical Journal. Hoyos, C. et al. Hubble space telescope spectroscopy of four luminous compact blue galaxies at intermediate redshift.
Bershady, M.A., Díaz, Angeles I., Guzmán, R., Hoyos, C., Koo, D.C.   +4 more
core   +2 more sources

High‐Entropy Magnetism of Murunskite

Advanced Functional Materials, EarlyView.
The study of murunskite (K2FeCu3S4) reveals that its magnetic and orbital order emerges in a simple I4/mmm crystal structure with complete disorder in the transition metal positions. Mixed‐valence Fe ions randomly occupy 1/4 of the tetrahedral sites, with the remaining 3/4 being filled by non‐magnetic Cu+ ions.
Davor Tolj, Priyanka Reddy, Ivica Živković, Luka Akšamović, Jian Rui Soh, Kamila Komȩdera, Izabela Biało, Naveen Kumar Chogondahalli Muniraju, Trpimir Ivšić, Mario Novak, Oksana Zaharko, Clemens Ritter, Thomas LaGrange, Wojciech Tabiś, Ivo Batistić, László Forró, Henrik M. Rønnow, Denis K. Sunko, Neven Barišić   +18 more
wiley   +1 more source

A User-oriented Comparison of the Techniques for 3D Spectroscopy [PDF]

arXiv, 2005
A comparison of the most popular techniques for 3D spectroscopy is presented in a way which should hopefully be useful for astronomers intending to use these techniques. Integral field spectroscopy, slitless spectroscopy, tunable imaging filters, imaging Fourier transform spectroscopy, and energy-resolving detectors are included in their different ...
arxiv  

Ultrafast Laser Synthesis of Zeolites

Advanced Materials, EarlyView.
The study presents a novel ultrafast laser‐driven synthesis technique for zeolites directly in liquid. Laser pulses create a microscopic reactor that controls reaction kinetics at femto‐ and picosecond timescales. Nonlinear light‐matter interactions drive nucleation and growth, allowing the process to be paused at any stage of self‐assembly.
Sezin Galioglu, Mehdi Hagverdiyev, Meryem M. Doğan, Özgün Yavuz, Ü. Seleme Nizam, Ghaith Makey, Aladin Şura, Mesut Laçin, Burcu Akata Kurç, Parviz Elahi, F. Ömer Ilday, Serim Ilday   +11 more
wiley   +1 more source

Cavity ring down spectroscopy of cold neutral phenanthrene and phenanthridine in supersonic jets

AIP Advances, 2019
Here we study the effect of nitrogen insertion on the electronic spectra of polycyclic aromatic hydrocarbon (PAH) molecules measured under laboratory conditions that are relevant for comparison with astronomical data.
Salma Bejaoui, Farid Salama
doaj   +1 more source

HERMES at Mercator, competitive high-resolution spectroscopy with a small telescope [PDF]

, 2013
HERMES, a fibre-fed high-resolution (R=85000) echelle spectrograph with good stability and excellent throughput, is the work-horse instrument of the 1.2-m Mercator telescope on La Palma. HERMES targets building up time series of high-quality data of variable stellar phenomena, mainly for asteroseismology and binary-evolution research.
arxiv   +1 more source

Carnegie Supernova Project-II: The Near-infrared Spectroscopy Program

, 2018
Shifting the focus of Type Ia supernova (SN Ia) cosmology to the near-infrared (NIR) is a promising way to significantly reduce the systematic errors, as the strategy minimizes our reliance on the empirical width-luminosity relation and uncertain dust ...
Anderson, J. P., Ashall, C., Baltay, C., Banerjee, D. P. K., Baron, E., Burns, C. R., Contreras, C., Davis, S., Diamond, T. R., Folatelli, G., Freedman, Wendy L., Förster, F., Galbany, L., Gall, C., González-Gaitán, S., Goobar, A., Hamuy, M., Hoeflich, P., Holmbo, S., Hsiao, E. Y., Kasliwal, M. M., Kirshner, R. P., Krisciunas, K., Kumar, S., Lidman, C., Lu, J., Marion, G. H., Morrell, N., Nugent, P. E., Perlmutter, S., Persson, S. E., Phillips, M. M., Piro, A. L., Rabinowitz, D., Roth, M., Ryder, S. D., Sand, D. J., Schmidt, B. P., Shahbandeh, M., Stritzinger, M. D., Suntzeff, N. B., Taddia, F., Uddin, S., Valenti, S., Wang, L.   +44 more
core   +1 more source

An Electron Transfer Mediated Mechanism for Efficient Photoreforming of Waste Plastics Using a Ni3S4/ZnCdS Heterojunction

Advanced Materials, Volume 37, Issue 14, April 9, 2025.
Ni3S4/ZnCdS heterojunction is prepared for the efficient production of H2 and high‐selectivity value‐added chemicals from waste plastic. The catalyst exhibits high H2 production rates of 27.9 and 17.4 mmol g−1 h−1, along with selectivities of 94.2% and 78.3% in the liquid product toward pyruvate and acetate production from PLA and PET, respectively ...
Zehao Ma, Shaoqi Zhan, Yule Zhang, Artem Kuklin, Yinxiang Chen, Yingwu Lin, Han Zhang, Xiaohui Ren, Hans Ågren, Ye Zhang   +9 more
wiley   +1 more source

A High-resolution Non-detection of Escaping Helium in the Ultrahot Neptune LTT 9779b: Evidence for Weakened Evaporation

The Astrophysical Journal Letters
The recent discovery of “ultrahot” ( P < 1 day) Neptunes has come as a surprise: some of these planets have managed to retain gaseous envelopes despite being close enough to their host stars to trigger strong photoevaporation and/or Roche lobe overflow ...
Shreyas Vissapragada, Patrick McCreery, Leonardo A. Dos Santos, Néstor Espinoza, Andrew McWilliam, Noriyuki Matsunaga, Jéa Adams Redai, Patrick Behr, Kevin France, Satoshi Hamano, Charlie Hull, Yuji Ikeda, Haruki Katoh, Hideyo Kawakita, Mercedes López-Morales, Kevin N. Ortiz Ceballos, Shogo Otsubo, Yuki Sarugaku, Tomomi Takeuchi   +18 more
doaj   +1 more source

Scaling Up Purcell‐Enhanced Self‐Assembled Nanoplasmonic Perovskite Scintillators into the Bulk Regime

Advanced Materials, EarlyView.
This study presents a scalable approach to enhancing bulk scintillators using nanoplasmonics. By integrating 100‐nm silver nanoparticles with perovskite scintillator nanocrystals in a polymer matrix, significant improvements in light yield and decay rates via the Purcell effect are achieved.
Michal Makowski, Wenzheng Ye, Dominik Kowal, Francesco Maddalena, Somnath Mahato, Yudhistira Tirtayasri Amrillah, Weronika Zajac, Marcin Eugeniusz Witkowski, Konrad Jacek Drozdowski, Nathaniel, Cuong Dang, Joanna Cybinska, Winicjusz Drozdowski, Ferry Anggoro Ardy Nugroho, Christophe Dujardin, Liang Jie Wong, Muhammad Danang Birowosuto   +16 more
wiley   +1 more source