interstellar reddening वाक्य

उदाहरण वाक्य

1. In astronomy, interstellar reddening is a phenomenon associated with interstellar extinction where the spectroscopic lines unchanged.
2. When combined with corrections for interstellar reddening, this allows for accurate determination of a galaxy's distance.
3. Interstellar reddening occurs because interstellar dust absorbs and scatters blue light waves more than red light waves, making stars appear redder than they are.
4. It was only after Kapteyn's death, in Amsterdam, that Robert Trumpler determined that the amount of interstellar reddening was actually much greater than had been assumed.
5. Since blue light is much more strongly attenuated than red light, extinction causes objects to appear redder than expected, a phenomenon referred to as "'interstellar reddening " '.
6. In any photometric system interstellar reddening can be described by color excess, defined as the difference between an object's observed color index and its intrinsic color index ( sometimes referred to as its normal color index ).
7. The filters are selected so that the mean wavelengths of response functions are 364 nm for U, 442 nm for B, 540 nm for V . The zero point of the A0 main sequence stars not affected by interstellar reddening.
8. Due to the extremely high interstellar reddening towards Wd1, it is very difficult to observe in the U-and B-bands, and most observations are made in the R-or I-bands at the red end of the spectrum or in the infra red.