نتایج جستجو برای: emissivity

تعداد نتایج: 2645  

Journal: :Journal of Applied Physics 1952

2004
Frédéric Jacob Franc̨ois Petitcolin Thomas Schmugge Éric Vermote Andrew French Kenta Ogawa

This study compared surface emissivity and radiometric temperature retrievals derived from data collected with the MODerate resolution Imaging Spectroradiometer (MODIS) and Advanced Spaceborne Thermal Emission Reflection Radiometer (ASTER) sensors, onboard the NASA’s Earth Observation System (EOS)-TERRA satellite. Two study sites were selected: a semi-arid area located in northern Chihuahuan de...

2008
Kenneth Wood Barbara A. Whitney Thomas Robitaille Bruce T. Draine

We have modeled optical to far infrared images, photometry, and spectroscopy of the object known as Gomez’s Hamburger. We reproduce the images and spectrum with an edge-on disk of mass 0.3M⊙ and radius 1600 AU, surrounding an A0 III star at a distance of 280 pc. Our mass estimate is in excellent agreement with recent CO observations. However, our distance determination is more than an order of ...

1999
Douglas P. Finkbeiner David J. Schlegel

We present predicted full-sky maps of submillimeter and microwave emission from the diffuse interstellar dust in the Galaxy. These maps are extrapolated from the 100μm emission and 100/240μm flux ratio maps that Schlegel, Finkbeiner, & Davis (1998; SFD98) generated from IRAS and COBE/DIRBE data. Results are presented for a number of physically plausible emissivity models. The correlation of COB...

2005
Jeffrey M. Byrnes Penelope L. King Michael S. Ramsey Rachel J. Lee

Introduction: Volcanism is the primary process in the solar system that creates the surfaces of the terrestrial planetary bodies. Volcanoes and volcanic surface units provide information about the geologic history of these bodies, which reflects the unique thermal and chemical evolution of each. Remote sensing provides an effective means to study these volcanic surface units in a quantitative w...

2017
Weijie Yan Chun Lou Qiang Cheng Peitao Zhao Xiangyu Zhang

This paper presents experimental investigations of the in situ diagnosis of the alkali metals in the municipal solid waste (MSW) flame of an industrial grade incinerator using flame emission spectroscopy. The spectral radiation intensities of the MSW flame were obtained using a spectrometer. A linear polynomial fitting method is proposed to uncouple the continuous spectrum and the characteristi...

2014
Gen Ito Timothy Glotch Jessica Arnold

Determining the compositions of fine particulates, such as the regoliths of the Moon and near Earth asteroids, has been a problematic task in infrared remote sensing. Difficulty in modeling the scattering properties arises due to the multiple scattering, absorption, and transmission of light that occurs when regolith particles have diameters on the order of the wavelength of light being used by...

2013
D. J. B. Smith M. J. Hardcastle M. J. Jarvis S. J. Maddox L. Dunne D. G. Bonfield S. Eales S. Serjeant M. A. Thompson M. Baes D. L. Clements A. Cooray G. De Zotti J. Gonzàlez-Nuevo P. van der Werf J. Virdee N. Bourne A. Dariush R. Hopwood E. Ibar E. Valiante

We use galaxies from the Herschel-ATLAS (H-ATLAS) survey, and a suite of ancillary simulations based on an isothermal dust model, to study our ability to determine the effective dust temperature, luminosity and emissivity index of 250 μm selected galaxies in the local Universe (z < 0.5). As well as simple far-infrared spectral energy distribution (SED) fitting of individual galaxies based on χ2...

2006
Lynn M. Carter Donald B. Campbell Jean-Luc Margot Bruce A. Campbell

Introduction. One of the major unsolved puzzles about the surface of Venus is the composition and formation process of the radar-bright, low emissivity material that covers much of the high altitude terrain. Maxwell Montes, centered at a latitude of 65◦ N, is the tallest structure on Venus with elevations 12 km above the mean planetary radius (MPR) [1]. In the case of Maxwell Montes, the emissi...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید