OH megamaser的光度和它们的宿主星系的红外光度之间的相关关系

利用66个OH megamaser的光度和它们的宿主星系的红外光度之间的相关关系,得到log L(OH)=1.71log L(IR)-17.67,即L(OH)αL(IR)]1。71.这个结果介于Baan所得到的L(OH)αL(IR)]2和Kandalian所得到的L(OH)αL(IR)]1.38的结果之间.由于统计时所取的样本数最多,因此结果更能反映实际情况.进一步,可把这66个OH megamaser分为两类;第一类为L(OH)<102L(?)的小光度OH megamaser,小光度OH megamaser包含了14个OH megamaser;第二类为L(OH)≥102L的大光度OH megamaser,大光度OH megamaser包含了52个OHmegamaser.研究结果表明,小光度OH megamaser的光度和它们的宿主星系的红外光度之间相关关系为L(OH)αL(IR)]1.43,与Kandalia所得到的结果相接近.大光度OH megamaser的光度和它们的宿主星系的红外光度之间的相关关系为L(OH)αL(IR)]2,与Baan所得到的结果相一致.

Correlation between Luminosity of OH Megamasers and Infrared Luminosity of Their Host Galaxies

This paper has studied the correlation between luminosity of 66 OH mega-masers and infrared luminosity of their host galaxies. A relation log L(OH)=1.71 log L(IR)-17.67, i.e. L(OH) L(IR)]1.71, is obtained. The resultis interposed between L(OH) L(IR)]2 obtained by Baan(1989)and L(OH) oc L(IR)]1.38 obtained by Kandalian(1996). Because the sample number is the largest among the mentioned results,our result closes the practical condition. Furthermore, the 66 OH megamasers can be divided in two groups. First group is the OH megamasers having small luminosity of L(OH)<102L, which contains 14 OH megamasers. Second one is one having large luminosity of L(OH)>102L, which contains 52 OH megamasers. Our results indicate, the correlation between luminosity of OH megamasers having small luminosity and infrared luminosity of their host galaxies is L(OH) oc L(IR)]1.43, which closes one obtained by Kandalia(1996), and the correlation between luminosity of OH megamaser having large luminosity and infrared luminosity of their host galaxies is L(OH) L(IR)]2 , which is the same one obtained by Baan(1989).