标题： 耀星型天体大样本的能谱能量分布 显示英文标题

标题： Spectral energy distributions of a large sample of BL Lacertae objects

摘要： 我们收集了大量梅萨霍维射电天文台 BL Lacre 样本中目标的多频数据，并计算了它们的谱能量分布（SED）。 这是首次使用超过 300 个目标的样本研究 BL Lacre 的 SED。 SED 的同步辐射分量用抛物线函数拟合以确定同步辐射峰值频率。 我们检查了几种频率带上的亮度和同步辐射峰值频率之间的依赖关系，以测试耀变体序列情景，该情景表明源亮度取决于同步辐射峰值的位置。 我们还计算了宽带频谱指数并将它们相互绘制并与峰值频率绘制。 与以往的研究相比，我们研究中的峰值频率范围大大扩展。 有 22 个目标的 log\nu _{峰值}>19。 数据显示，在 5 GHz、37 GHz 和 5500 Å 处，亮度和 nu_{峰值}之间存在负相关性。 同步辐射峰值处的源亮度和峰值频率之间没有显著的相关性。 发现了一些低无线电亮度和低能量峰的 BL Lacre。 宽带频谱指数和 nu_{峰值}之间的负相关性也显著，尽管存在相当大的离散度。 因此，我们发现 alpha_{rx}和 alpha_{罗}都不能用来确定 BL Lacre 的同步辐射峰值。 基于我们的结果，我们得出结论，耀变体序列情景不成立。 在我们所有结果中， BL Lac 种群是连续的，没有任何第一组 BL Lac 样本出现双模态的迹象。 显示英文摘要

摘要： We have collected a large amount of multifrequency data for the objects in the Metsahovi Radio Observatory BL Lacertae sample and computed their spectral energy distributions (SED). This is the first time the SEDs of BL Lacs have been studied with a sample of over 300 objects. The synchrotron components of the SEDs were fitted with a parabolic function to determine the synchrotron peak frequency. We checked the dependence between luminosities at several frequency bands and synchrotron peak frequency to test the blazar sequence scenario, which states that the source luminosity depends on the location of the synchrotron peak. We also calculated broad band spectral indices and plotted them against each other and the peak frequency. The range of peak frequencies in our study was considerably extended compared to previous studies. There were 22 objects for which log\nu_{peak}>19. The data shows that at 5 GHz, 37 GHz and 5500 A there is negative correlation between luminosity and nu_{peak}. There is no significant correlation between source luminosity at synchrotron peak and peak frequency. Several low radio luminosity-low energy peaked BL Lacs were found. The negative correlation between broad band spectral indices and nu_{peak} is also significant, although there is substantial scatter. Therefore we find that neither alpha_{rx} nor alpha_{ro} can be used to determine the synchrotron peak of BL Lacs. On the grounds of our results we conclude that the blazar sequence scenario is not valid. In all our results the BL Lac population is continuous with no hint of the bimodality of the first BL Lac samples.