Error of measurement of radio-brightness temperature of the underlying surface during space monitoring of the Earth

2002 ◽  
Author(s):  
I.V. Bragin ◽  
V.P. Sgibnev ◽  
S.I. Bragin ◽  
Y.B. Bragina ◽  
M.B. Kamenkov ◽  
...  
Keyword(s):  
Brightness Temperature ◽  
Underlying Surface ◽  
Radio Brightness ◽  
The Earth ◽  
Radio Brightness Temperature ◽  
Error Of Measurement

scholarly journals Radial distributions of some constituents in M31, the galaxy and M33

1979 ◽  
Vol 84 ◽  
pp. 427-427
Author(s):  
Elly M. Berkhuijsen
Keyword(s):  
Brightness Temperature ◽  
Surface Density ◽  
Hii Regions ◽  
Radio Brightness ◽  
The Galaxy ◽  
Radio Brightness Temperature

The Figure shows the distributions perpendicular to the planes of the galaxies of: (a) the surface density of HI, σHI(R), (b) the surface density of HII regions, σHII(R), and (c) the radio brightness temperature, σTB(R). Details may be found in Berkhuijsen (A.A. 57, 9, 1977; Proc. IAU Symp. 77, 1978); here σHI(R) of the Galaxy was taken from Gordon and Burton (Ap. J. 208, 346, 1976) and σTB(R) of M31 has been revised. Distances to the centre are scaled with the Holmberg radius RH (21, 15 and 7.8 kpc for M31, Galaxy, M33).

Sign in / Sign up

Export Citation Format

Share Document