DEFPOS Hα observations of Hii regions

Publication year: 2011
Source: New Astronomy, Volume 16, Issue 8, December 2011, Pages 485-491

N., Aksaker , M., Sahan , I., Yegingil , N., Emrahoglu

We present Hα emission line measurements of northern bright Hii regions selected from the Sharpless (1959) catalog near the Galactic plane (b⩽±6°). A total of 10 Hii regions were observed with DEFPOS (Dual Etalon Fabry–Perot Optical Spectrometer) system at the f/48 Coude focus of 150cm RTT150 telescope located at TUBITAK National Observatory (TUG) in Antalya/Turkey. The intensities, the local standard of rest (LSR) velocities (VLSR), and the linewidths (Full Width Half Maximum: FWHM) of the Hα emission line from our observations were in the range of 84 to 745Rayleigh (R [one Rayleigh (R) is 106/4π photonscm−2sr−1s−1= 2.4110−7ergcm−2sr−1s−1 at Hα and…