Results 111 to 120 of about 490 (138)

Are There Jets in Spiral Galaxies?

1983
The absence in spiral galaxies of large-scale collimated jets of radio emission is still little understood. Collimated emission in elliptical galaxies in some cases exceeds by far the optical extent of the galaxy (e.g. in NGC6251). Westerbork observations of NGC4258 (van der Kruit, Oort and Mathewson, 1972) and NGC3079 (de Bruyn, 1977) have provided ...
C. Kotanyi, E. Hummel, J. van Gorkom
openaire   +1 more source

Opacity in Spiral Galaxies

Publications of the Astronomical Society of the Pacific, 1993
The global properties of galaxies such as their observed luminosities may be severely affected by internal obscuration of the stars by dust. In this thesis I examine the amount and extent of this obscuration using the following approaches: For a sample of eight galaxies for which I have obtained multi-waveband optical and near-infrared observations I ...
openaire   +1 more source

Comparison of the Galaxy with External Spiral Galaxies

1987
In this chapter some areas of comparative exploration in our and external galaxies are reviewed and discussed. Photometric parameters for the Galaxy are derived. The radial scalelength is 5.0 ± 0.5 kpc, and this makes our Galaxy (and M31) unusually large unless Ho = 65 ± 10 km s−1 Mpc−1. Surface photometry of external edge-on galaxies, in particular of
openaire   +1 more source

Experimental study on the heat transfer characteristics of supercritical carbon dioxide in spiral tube with high pitch to spiral diameter ratio

International Journal of Heat and Mass Transfer, 2023
Yong-Le Nian, Wen-Long Cheng
exaly  

Formation of a spiral galaxy

ACM SIGGRAPH 2007 computer animation festival, 2007
openaire   +1 more source

Vortices degradation and periodical variation in spiral micromixers with various spiral structures

International Journal of Heat and Mass Transfer, 2022
Zhanqiang Liu, Bing Wang, Yukui Cai
exaly  

Parametric analysis, response surface, sensitivity analysis, and optimization of a novel spiral-double ground heat exchanger

Energy Conversion and Management, 2021
Ahmed A Serageldin, Ali Radwan, Takao Katsura   +2 more
exaly  

Hair Cell Mechanotransduction Regulates Spontaneous Activity and Spiral Ganglion Subtype Specification in the Auditory System

Cell, 2018
Shuohao Sun, Travis A Babola, Adam T Palermo   +2 more
exaly  

Spiral wound modules and spacers

Journal of Membrane Science, 2004
P R Neal, Dianne E Wiley, David F Fletcher   +2 more
exaly  

Fabrication of Left‐Handed Metal Microcoil from Spiral Vessel of Vascular Plant

Advanced Materials, 2011
Masaru Nakagawa, Tomokazu Iyoda
exaly