邻近星系中HCO^+J=3→2和HNC J=3→2发射线强度与恒星形成率的相关性

The study of relationships between nearby galaxy SFR(star formation rate)s &strengths of emission lines HCO^+J=3→2 & HNC J=3→2

利用James Clerk Maxwell Telescope(JCMT)的观测数据对邻近星系HNC J=3→2和HCO+J=3→2这2条发射线的强度与星系Hα谱线强度进行了相关性分析,得出这2条分子发射线的强度与星系Hα谱线强度成较显著的线性正相关的结论.有研究表明,星系Hα发射线的强度是跟踪星系内恒星形成率的有效手段,因此星系的恒星形成率也与这2条谱线的强度存在正相关关系.当前国内外缺少对这2条分子发射线的观测,这些结果填补了该研究领域的一些空白,给研究星系恒星形成的示踪分子奠定进一步翔实的基础.

The correlations between the intensity of HNC J=3→2 emission line,HCO^＋J=3→2 emission line and Hαline of galaxies were studied.Data from James Clerk Maxwell Telescope showed a positive correlation.As reported before,Hαline intensity is an effective indicator of SFR.It can be concluded that SFR are positively correlated with the intensity of HNC J=3→2 and HCO＋J=3→2 emission lines.Research on the2 molecular emission lines is relatively rare now These results filled some gaps in knowledge in the field.