Results 11 to 20 of about 586,382 (179)
Consequences of spectrograph illumination for the accuracy of radial-velocimetry
EPJ Web of Conferences, 2011 For fiber-fed spectrographs with a stable external wavelength source, scrambling properties of optical fibers and, homogeneity and stability of the instrument illumination are important for the accuracy of radial-velocimetry. Optical cylindric fibers are
Hébrard G. +6 more
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Radial variation of functions in Besov spaces [PDF]
Publicacions Matemàtiques, 2006 This paper considers the radial variation function F(r, t) of an analytic function f(z) on the disc D. We examine F(r, t) when f belongs to a Besov space As pq and look for ways in which F imitates the behaviour of f. Regarded as a function of position (r, t) in D, we show that F obeys a certain integral growth condition which is the real variable ...
openaire +8 more sources
Dark matter density profiles from the Jeans equation [PDF]
, 2004 We make a simple analytical study of radial profiles of dark matter structures, with special attention to the question of the central radial density profile.
Arad +30 more
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Radial Velocity Variations from Starspots [PDF]
International Astronomical Union Colloquium, 1999 AbstractIn this contribution the radial velocity (RV) variations expected for starspots on solar-type stars are examined. The spot-induced RV amplitude is found to vary linearly with spot filling factor and is less than 1 m−1 for spot sizes comparable to large sunspots and as high as 20 m s−1 for spot filling factors of 1%.
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Radial Velocity Variations in 69 Orionis [PDF]
Symposium - International Astronomical Union, 1982 69 Ori (B5 V) was discovered as a Be star in 1976 (Doazan et al., 1977). We observed this object at the Merate Observatory during the periods Nov. 77. - Jan. 78 - Jan. 78 and Oct. 78 - Feb. 79 obtaining 20 red spectrograms and 25 blue ones with a dispersion of 35 Å/mm.
M. Bossi, G. Guerrero, L. Mantegazza
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Revista Árvore, 2003 A ultra-estrutura e a composição química da madeira, bem como suas propriedades físicas e mecânicas, variam significativamente entre espécies, entre árvores de uma mesma espécie e, mesmo, entre diferentes partes de uma mesma árvore.
José Tarcísio da Silva Oliveira +1 more
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Radial gradient of the solar rotation rate in the near-surface shear layer of the Sun
Frontiers in Astronomy and Space Sciences, 2022 We study the radial gradient of the solar rotation rate in the near-surface shear layer (NSSL) from about .950 R⊙ to the solar surface and its variation during Solar Cycles 23 and 24 with ring-diagram analysis applied to Global Oscillation Network Group (
Rudolf Komm
doaj +1 more source
Chemical gradients in the Milky Way from the RAVE data. II. Giant stars [PDF]
, 2014 We provide new constraints on the chemo-dynamical models of the Milky Way by measuring the radial and vertical chemical gradients for the elements Mg, Al, Si, Ti, and Fe in the Galactic disc and the gradient variations as a function of the distance from ...
Bienaymé, O. +22 more
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Radial forearm free flap variation: A case report
Advances in Oral and Maxillofacial Surgery, 2022 Oral cavity malignancies comprise 6–8% of all malignancies. Tumour resection and reconstruction of the defect offers the best surgical outcome. Advances in microvascular surgery has allowed increased use of free flaps as part of surgical reconstruction ...
Janine Quek +3 more
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Radial Growth of Qilian Juniper on the Northeast Tibetan Plateau and Potential Climate Associations [PDF]
, 2013 There is controversy regarding the limiting climatic factor for tree radial growth at the alpine treeline on the northeastern Tibetan Plateau. In this study, we collected 594 increment cores from 331 trees, grouped within four altitude belts spanning the
A Dai +46 more
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