Results 41 to 50 of about 440,939 (238)

On distance spectral radius of graphs

open access: yesLinear Algebra and its Applications, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wang, Yanna, Zhou, Bo
openaire   +1 more source

Experimental realization of a Fresnel hologram as a super spectral resolution optical element

open access: yesScientific Reports, 2021
A highly dispersive, diffractive optical element is designed and realized for an extremely high spectral resolution spectroscopy for exoplanet telescope application.
Mei-Li Hsieh   +5 more
doaj   +1 more source

On the distance energy of k-uniform hypergraphs

open access: yesSpecial Matrices, 2023
In this article, we extend the concept of distance energy for hypergraphs. We first establish a relation between the distance energy and the distance spectral radius.
Sharma Kshitij, Panda Swarup Kumar
doaj   +1 more source

The distance spectral radius of digraphs

open access: yesDiscrete Applied Mathematics, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lin, Huiqiu, Shu, Jinlong
openaire   +1 more source

The distance to the Orion Nebula Cluster [PDF]

open access: yes, 2006
The distance to the Orion Nebula Cluster (ONC) is estimated using the rotational properties of its low-mass pre main-sequence (PMS) stars. Rotation periods, projected equatorial velocities and distance-dependent radius estimates are used to form an ...
Anthony-Twarog   +49 more
core   +3 more sources

On the Second-Largest Reciprocal Distance Signless Laplacian Eigenvalue

open access: yesMathematics, 2021
The signless Laplacian reciprocal distance matrix for a simple connected graph G is defined as RQ(G)=diag(RH(G))+RD(G). Here, RD(G) is the Harary matrix (also called reciprocal distance matrix) while diag(RH(G)) represents the diagonal matrix of the ...
Maryam Baghipur   +3 more
doaj   +1 more source

Using High-resolution Optical Spectra to Measure Intrinsic Properties of Low-mass Stars: New Properties for KOI-314 and GJ 3470 [PDF]

open access: yes, 2013
We construct high signal-to-noise "template" spectra by co-adding hundreds of spectra of nearby dwarfs spanning K7 to M4, taken with Keck/HIRES as part of the California Planet Search. We identify several spectral regions in the visible (370-800 nm) that
Bottom, Michael   +2 more
core   +3 more sources

The secondary star and distance of the polar V1309 Ori [PDF]

open access: yes, 2006
The first phase-resolved JHK light curves of the eclipsing polar (AM Herculis binary) V1309 Ori are presented and interpreted. We separate the contributions from the secondary star and from other sources with the aim of determining a photometric distance.
Bailey   +26 more
core   +2 more sources

Influence of Source Parameters and Non-Kolmogorov Turbulence on Evolution Properties of Radial Phased-Locked Partially Coherent Vortex Beam Array

open access: yesPhotonics, 2021
Partially coherent optical vortices have been applicated widely to reduce the influence of atmospheric turbulence, especially for free-space optical (FSO) communication.
Jiao Wang   +5 more
doaj   +1 more source

The LuckyCam Survey for Very Low Mass Binaries II: 13 new M4.5-M6.0 Binaries [PDF]

open access: yes, 2007
We present results from a high-angular-resolution survey of 78 very low mass (VLM) binary systems with 6.0 = 0.15 arcsec/yr. 21 VLM binaries were detected, 13 of them new discoveries. The new binary systems range in separation between 0.18 arcsec and 1.3
Baraffe I.   +16 more
core   +3 more sources

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