# AN ANALYSIS OF THE CHEMICAL COMPOSITION OF INTERSTELLAR GAS CLOUDS USING FORMALDEHYDE ABSORPTION SPECTRA.

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/15690

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 Title: AN ANALYSIS OF THE CHEMICAL COMPOSITION OF INTERSTELLAR GAS CLOUDS USING FORMALDEHYDE ABSORPTION SPECTRA. Creators: Snyder, L. E.; Buhl, David; Zuckerman, B.; Palmer, Patrick Issue Date: 1969 Abstract: Absorption spectra of the recently $reported^{1, 2}$ 4830 MHz transition of interstellar formaldehyde $(H_{2}CO)$ have been compared with spectra of other atomic and molecular constituents of the interstellar medium. Radial velocity correlations have given some new insight into the chemical composition of interstellar gas clouds and the astronomically determined rest frequency is found to be in excellent agreement with laboratory $measurement.^{3}$ Evidence of hyperfine splitting due to the spin rotation interaction has been observed in several interstellar $H^{2}CO$ clouds. URI: http://hdl.handle.net/1811/15690 Other Identifiers: 1969-E-2