Results 71 to 80 of about 51,041 (245)
Census of blue stars in SDSS DR8 [PDF]
We present a census of the 12,060 spectra of blue objects ($(g-r)_0<-0.25$) in the Sloan Digital Sky Survey (SDSS) Data Release 8 (DR8). As part of the data release, all of the spectra were cross-correlated with 48 template spectra of stars, galaxies and QSOs to determine the best match.
arxiv +1 more source
Stiffening Liquid Crystal Elastomers with Liquid Crystal Inclusions
Incorporation of low molecular weight liquid crystals (LC) into liquid crystal elastomers (LCE) leads to a significant increase in their stiffness and output work density. Such remarkable stiffening is attributed to nanoscale phase‐separation and the formation of induced‐smectic domains in polydomain and monodomain LC‐LCEs, respectively.
Sahad Vasanji+7 more
wiley +1 more source
Nearby blue compact dwarf galaxies (BCDs) are considered analogs to objects from the Epoch of Reionization revealed by JWST, having similarly low stellar masses, low metallicities, and high specific star formation rates.
Matilde Mingozzi+21 more
doaj +1 more source
The cotton leafroll dwarf virus (CLRDV) is one of the most devastating pathogens of cotton. This malady, known as cotton blue disease, is widespread in South America where it causes huge crop losses. Recently the disease has been reported from India.
Arup Kumar Mukherjee+2 more
doaj +1 more source
Detection of white dwarf companions to blue stragglers in the open cluster NGC 188: direct evidence for recent mass transfer [PDF]
Several possible formation pathways for blue straggler stars have been developed recently, but no one pathway has yet been observationally confirmed for a specific blue straggler. Here we report the first findings from a Hubble Space Telescope ACS/SBC far-UV photometric program to search for white dwarf companions to blue straggler stars. We find three
arxiv +1 more source
The Brown Dwarf Kinematics Project (BDKP) I. Proper Motions and Tangential Velocities for a Large Sample of Late-type M, L and T Dwarfs [PDF]
We report proper motion measurements for 427 late-type M, L and T dwarfs, 332 of which have been measured for the first time. Combining these new proper motions with previously published measurements yields a sample of 841 M7-T8 dwarfs. We combined parallax measurements or calculated spectrophotometric distances and computed tangential velocities for ...
arxiv +1 more source
Excitation‐Wavelength‐Tunable Lasing in Individual Quantum Dot Superparticles
Mesoscale superparticles assembled from CdSe quantum dots are shown to behave as microlasers with emission properties that can be tuned by changing the excitation wavelength. Abstract Microcavities enable precise control over light‐matter interactions, supporting a wide range of applications in photonics and optoelectronics.
Marco Reale+5 more
wiley +1 more source
Detectability of Solar Panels as a Technosignature
In this work, we assess the potential detectability of solar panels made of silicon on an Earth-like exoplanet as a potential technosignature. Silicon-based photovoltaic cells have high reflectance in the ultraviolet-to-visible (UV-VIS) and in the near ...
Ravi Kopparapu+4 more
doaj +1 more source
The necessity and feasibility of enhancing light outcoupling in perovskite light‐emitting diodes (PeLEDs) is highlighted. On near‐IR PeLEDs, low‐cost, micro‐textured light management (LM) foils demonstrate boost in light extraction. Optimizing perovskite thickness and the optical cavity in synergy with LM foils is crucial for maximizing performance ...
Milan Kovačič+3 more
wiley +1 more source
Search for Blue Compact Dwarf Galaxies During Quiescence [PDF]
Accepted for publication in ApJ. 17 pages.
J. Sánchez Almeida+5 more
openaire +3 more sources