Results 61 to 70 of about 7,372,917 (304)
Calibration of the Strömvil Photometric System
Open Astronomy, 2003 A calibration of color indices of the Strömvil photometric system in terms of physical parameters of stars is presented. The calibration is based on photoelectric photometry of about 1000 stars with known effective temperatures, distances, gravities and ...
Kazlauskas A. +6 more
doaj +1 more source
The Astronomical Journal, 2023 Ultraviolet spectra were taken of 25 detached eclipsing binaries (DEBs) with spectral types O, B, and early A with the International Ultraviolet Explorer satellite in the 1150–1900 Å region. The spectra were compared with BOSZ model atmospheres.
Nancy Remage Evans +6 more
doaj +1 more source
A Study of the Fundamental Parameters of Particle Swarm Optimizers
CoRR, 2021 The range of applications of traditional optimization methods are limited by the features of the object variables, and of both the objective and the constraint functions. In contrast, population-based algorithms whose optimization capabilities are emergent properties, such as evolutionary algorithms and particle swarm optimization, present almost no ...
Mauro Sebastián Innocente, Johann Sienz
openaire +2 more sources
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Establishing a comprehensive apheresis medicine program in a resource‐constrained setting presents significant structural, financial, and logistical challenges. Despite the growing clinical importance of apheresis services globally, published experience from sub‐Saharan Africa remains sparse.
Folasade Adelekan‐Popoola +4 more
wiley +1 more source
Interstellar Extinction in the Gaia Photometric Systems
Open Astronomy, 2003 Three medium-band photometric systems proposed for the Gaia space mission are intercompared in determining color excesses for stars of spectral classes from O to M at V = 18 mag.
Bridžius A., Vansevičius V.
doaj +1 more source
Fundamental Parameters of CP Stars [PDF]
Highlights of Astronomy, 1998 The quest for accurate fundamental parameters (M, R, Teff log g, v sin i) of CP stars has been a lasting problem ever since the nature and origin of these stars has been discussed. The main reason for the difficulty lies in the anomalous colours of these stars, linked with their abundance anomalies which are responsible for complicated blocking and ...
openaire +1 more source
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Maintenance hemodialysis (MHD) patients frequently suffer from frailty, characterized by reduced physical function and poor prognosis. Myokines, such as myonectin, secreted by muscle, are emerging regulators of systemic health. This study investigated the relationship between serum myonectin, adipokines (adiponectin, omentin), and ...
Kenichi Kono +7 more
wiley +1 more source
Multiwavelength SED as a Tool in Understanding Outbursts of Symbiotic Binaries
Open Astronomy, 2012 Symbiotic binaries consist of a few sources of radiation contributing to spectral energy distribution (SED) from hard X-rays to radio wavelengths.
Skopal A.
doaj +1 more source
CHEMICAL COMPOSITION OF 4 STARS IN THE HYADES
Odessa Astronomical Publications, 2017 The parameters of atmospheres (Теf, 1оg g, [fе/Н], Vt) of 4 stars of Hyades are certain. Spectrums are got on a spectrograph ELODIE on a 1.93m telescope in the observatory of OHP (France). Overabundances are got 0.1 dех for all investigated elements.
E. P. Shereta
doaj +1 more source
Accurate Fundamental Stellar Parameters [PDF]
Proceedings of the International Astronomical Union, 2009 AbstractWe combine results from interferometry, asteroseismology and spectroscopic analyses to determine accurate fundamental parameters (mass, radius and effective temperature) of 10 bright solar-type stars covering the H-R diagram from spectral type F5 to K1. Using “direct” techniques that are only weakly model-dependent we determine the mass, radius
openaire +2 more sources