WARPED IONIZED HYDROGEN IN THE GALAXY

We report observations of the H166 alpha (nu = 1424.734 MHz) radio recombination line (RRL) emission from the Galactic plane in the longitude range l = 267 degrees - 302 degrees and latitude range b = - 3 degrees.0 to + 1 degrees.5. The line emission observed describes the Carina arm in the Galactic azimuth range from theta = 260 degrees to 190 degrees. The structure is located at negative latitudes with respect to the formal Galactic plane. The observations are combined with RRL data from the first Galactic quadrant. Both quadrants show the signature of the warp for the ionized gas, but an asymmetry of the distribution is noted. In the fourth quadrant, the gas is located between Galactic radii R approximate to 7 and 10 kpc, and the amplitude of the warp is seen from the midplane to z approximate to -150 pc. In the first quadrant, the gas is found between R approximate to 8 and 13-16 kpc, and flares to z approximate to +350 pc. We confirm the warp of the ionized gas near the solar circle. The distribution of the ionized gas is compared with the maximum intensity H I emission (0.30 < n(II) (I) < 0.45 cm(-3)) at intervals of the Galactic ring. The ionized material is correlated with the H I maximum intensity in both quadrants, and both components show the same tilted behavior with respect to the mid-Galactic plane.