Study of gas motion and molecular abundance in the central region of external galaxies using the absorption lines of ammonia

研究星系中心区域的气体运动对于了解中心黑洞周围可能存在的环境具有重要意义。我们为此选择了氨的吸收谱线。在被称为活动星系的Arp 220中，我们分析了获得的数据。在数据采集和分析过程中，我们考虑提高吸收谱线线宽的可靠性。对（J，K）=(3,3)线进行了详细分析，得到全宽约为600km/s。这个值在星系中很常见，我们得出结论，在arp220的中心区域没有明显的剧烈运动，可以探测到氨

It is important to study gas motion in the central region of galaxies to understand the possible existence and environment around the central black hole. We selected absorption lines of ammonia for this purpose. In Arp 220 known as an active galaxy we analyzed obtained data. During data acquisition and analysis we considered to increase the reliability of the line width of the absorption lines. The (J,K)=(3,3) line was analyzed in detail, and as a result the full width was derived to be about 600km/s. This value is usual in galaxies, and we concluded that there is no significant violent motion in gas detectable with ammonia in the central region in Arp 220