Observations of the 1_(10)-1_(11) line of formaldehyde with an angular resolution of 9.5″ x 20.6″ (P.A. = 4° east of north) toward Sgr A are presented. The velocity resolution is 3 km s~(-1), and the velocity range extends from -220 to +154 km s~(-1). The H_2CO line data show that the molecular gas is distributed in clouds ranging in mass from 10~(3.5) to 10~(4.8) solar mass, with a typical density of 10~(5.5) cm~(-3). These clouds are estimated to be gravitationally stable at present but will have lifetimes of less than 10~6 yr because of tidal forces from Sgr A~*. There appears to be an underabundance of formaldehyde in the Galactic center region and particularly in the circumnuclear disk. This may be due to destruction by shocks in this region.
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机译：呈现了针对Sgr A的甲醛的1_（10）-1_（11）线的观察结果，其角分辨率为9.5“ x 20.6”（P.A。=北以北4°）。速度分辨率为3 km s〜（-1），速度范围从-220到+154 km s〜（-1）。 H_2CO线数据表明，分子气体分布在质量为10〜（3.5）至10〜（4.8）太阳质量的云中，典型密度为10〜（5.5）cm〜（-3）。据估计，这些云目前在重力上是稳定的，但由于来自Sgr A〜*的潮汐力，其寿命将小于10〜6年。在银河中心区域，尤其是在核周盘中，似乎甲醛含量不足。这可能是由于该地区的地震破坏造成的。
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