Anahtar Kelimeler
DEFPOS Interferometer and Hα Spectra of Some Ionized Sources Keywords
Fabry-Perot interferometers, Etalon, Data analysis, Interstellar medium, HII regionsAbstract: This paper presents in detail about the DEFPOS spectrometer, the data reduction techniques, the intensity calibration, and some results of Hα (6563Å) spectra from four different ionized regions (NGC6530, NGC1973, NGC1501, NGC6514). Observations were carried out with long exposure times ranging from 600s to 3600s. Spectra provide information about the line widths, the velocities with respect to the LSR, and intensity of the sources. From these spectra, the LSR velocities, and intensities were found to be 11.800.2 km/s and 24409.7016.8 R for NGC6530, 13.650.7 km/s and 477.873.2 R for NGC1973 (Sh2-279), -26.262.6 km/s and 255.134.5 R for NGC1501, and 14.430.2 km/s and 1856.710.6R for NGC6514, respectively. For each of the individual emission sources, emission measures were also calculated using intensity values. Some results were compared with the literature data. Since there is no enough information on intensities and LSR velocities of such galactic sources with low angular size in the literature, we think that DEFPOS data will contribute to the literature.