Interpretation of radioastronomic observations of H2CO and H110α in W40 and Serpens South star formation regions of Aquila molecular cloud
AbstractThis study presents the results of radio astronomy observations of the absorption spectral lines of a formaldehyde molecule (H2CO) and the H110α recombination line towards the Aquila molecular cloud.
The paper interprets the radio astronomy observations of H2CO (l10-l11) and H110α in the W40 and Serpens South of the Aquila Rift molecular complex, which were obtained by the 26 m Nan-Shan radio telescope of the Xinjiang Astronomical Observatory of the Chinese Academy of Sciences. In order to construct radio maps, we also used archival data obtained by observing 12СО(2−1) and 13CO(2−1) and 6 cm continuum molecules for the Aquila Rift region.
Based on the obtained observational data, the optical depth and column density were calculated for the H2CO absorption line and 13CO emission line (J = 1-0), integrated intensity maps were constructed with the ionized hydrogen region H II and imposed contours that correspond to the absorption lines of H2CO and the recombination line H110α in the direction of the Aquila molecular cloud; maps of radiation intensity 13CO (1−0), distribution of 6 cm of the radio continuum, infrared radiation superimposed on integrated absorption contours of H2CO; dependences of linear flows and peak column densities for H2CO and 13CO are obtained. In the work it is shown that the Serpens South region, highlighted by the contours during the absorption of formaldehyde H2CO, comes from the cosmic microwave background. A correlation was found between the parameter values for the H2CO absorption line and the 13CO emission line. Integrated intensity maps were constructed for various values of the channel velocity of the H2CO absorption line in the direction of the Aquila molecular cloud. It was revealed that the rates of H2CO and 13CO have close values to each other.
An analysis of the study led to the conclusion that the absorption lines of the H2CO formaldehyde molecule and the 13CO emission lines originate from the same region in the Aquila Rift complex of the Aquila molecular cloud.
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