Results 51 to 60 of about 74,003 (312)

Magnetic inflation and stellar mass. III. revised parameters for the component stars of NSVS 07394765 [PDF]

, 2019
We perform a new analysis of the M-dwarf–M-dwarf eclipsing binary system NSVS 07394765 in order to investigate the reported hyper-inflated radius of one of the component stars.
Han, Eunkyu, Healy, Brian F., Muirhead, Philip S., Polakis, Tom, Rilinger, Anneliese, Skiff, Brian, Swift, Jonathan J.   +6 more
core   +2 more sources

The Digitization of Photographic Spectra in the Dominion Astrophysical Observatory Plate Collection with Commercial Scanners: A Pilot Study

The Astronomical Journal
Commercial flatbed scanners have the potential to deliver a quick and efficient means of capturing the scientific content of spectra recorded on photographic plates.
T. J. Davidge
doaj   +1 more source

Ultrafast imaging Raman spectroscopy of large-area samples without stepwise scanning [PDF]

Journal of Sensors and Sensor Systems, 2016
Step-by-step, time-consuming scanning of the sample is still the state-of-the-art in imaging Raman spectroscopy. Even for a few 100 image points the measurement time may add up to minutes or hours.
E. Schmälzlin, B. Moralejo, D. Bodenmüller, M. E. Darvin, G. Thiede, M. M. Roth   +5 more
doaj   +1 more source

Photonic Engineering Enables All‐Passive Upconversion Imaging with Low‐Intensity Near‐Infrared Light

Advanced Functional Materials, EarlyView.
A passive upconversion imaging system enables the observation of scenes illuminated by low‐intensity incoherent near‐infrared light from 750 to 930 nm, by converting it into the visible without the use of external power. The upconverter is enabled by triplet–triplet annihilation in a bulk heterojunction, with absorption enhanced by plasmonic resonators
Rabeeya Hamid, Demeng Feng, Pournima Narayanan, Justin S. Edwards, Manchen Hu, Emma Belliveau, Minjeong Kim, Shenwei Yin, Sanket Deshpande, Chenghao Wan, Linda Pucurimay, David A. Czaplewski, Daniel N. Congreve, Mikhail A. Kats   +13 more
wiley   +1 more source

SILVERRUSH. III. Deep Optical and Near-Infrared Spectroscopy for Lya and UV-Nebular Lines of Bright Lya Emitters at z=6-7

, 2017
We present Lya and UV-nebular emission line properties of bright Lya emitters (LAEs) at z=6-7 with a luminosity of log L_Lya/[erg s-1] = 43-44 identified in the 21-deg2 area of the SILVERRUSH early sample developed with the Subaru Hyper Suprime-Cam (HSC)
Furusawa, Hisanori, Goto, Tomotsugu, Harikane, Yuichi, Higuchi, Ryo, Kajisawa, Masaru, Kashikawa, Nobunari, Kobayashi, Masakazu A. R., Kojima, Takashi, Komiyama, Yutaka, Konno, Akira, Kusakabe, Haruka, Lee, Chien-Hsiu, Martin, Crystal L., Momose, Rieko, Mukae, Shiro, Nagao, Tohru, Nakajima, Kimihiko, Ono, Yoshiaki, Ouchi, Masami, Rauch, Michael, Shibuya, Takatoshi, Shimasaku, Kazuhiro, Tanaka, Masayuki, Taniguchi, Yoshiaki, Wang, Shiang-Yu, Yuma, Suraphong   +25 more
core   +1 more source

RVSNUpy: A Python Package for Spectroscopic Redshift Measurement Based on Cross Correlation

The Astronomical Journal
We introduce RVSNUpy , a new Python package designed to measure spectroscopic redshifts. Based on inverse-variance-weighted cross correlation, RVSNUpy determines redshifts by comparing observed spectra with various rest-frame template spectra.
Taewan Kim, Jubee Sohn, Ho Seong Hwang
doaj   +1 more source

A Comparative Analysis of Plasmonic and Dielectric Metasurface Sensing Platforms Powered by Bound States in the Continuum

Advanced Functional Materials, EarlyView.
This work reveals a fundamental trade‐off between plasmonic and dielectric metasurfaces for molecular sensing. A clear performance crossover is identified: dielectric metasurfaces excel in air, while plasmonic metasurfaces dominate in lossy solvents. These results establish design rules for infrared metasurface sensors and enable optimized performance ...
Tao Jiang, Angana Bhattacharya, Martin Barkey, Andreas Aigner, Lina Rohrer, Thomas Weber, Juan Wang, Stefan A. Maier, Andreas Tittl   +8 more
wiley   +1 more source

Magnetic inflation and stellar mass. IV. four low-mass kepler eclipsing binaries consistent with non-magnetic stellar evolutionary models [PDF]

, 2019
Low-mass eclipsing binaries (EBs) show systematically larger radii than model predictions for their mass, metallicity, and age. Prominent explanations for the inflation involve enhanced magnetic fields generated by rapid rotation of the star that inhibit
Han, Eunkyu, Muirhead, Philip S., Swift, Jonathan J.   +2 more
core   +2 more sources

Simulating Continuum-based Redshift Measurement in the Roman’s High Latitude Spectroscopic Survey

The Astronomical Journal
We investigate the capability of the Nancy Grace Roman Space Telescope’s (Roman) Wide-Field Instrument G150 slitless grism to detect red, quiescent galaxies based on the current reference survey.
Zhiyuan Guo, Bhavin Joshi, C. W. Walter, M. A. Troxel   +3 more
doaj   +1 more source

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

Advanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey, Arjen van den Berg, Sandra Ruiz Gomez, Claire Donnelly, Dirk Grundler, Sam Ladak   +5 more
wiley   +1 more source