标题： 具有WC星检测的新狼-雷特星系 显示英文标题

标题： New Wolf-Rayet Galaxies with Detection of WC Stars

摘要： 我们报告发现了两个新的沃尔夫-拉叶（WR）星系：Mrk~1039，和F08208$+$2816。 在5808\AA ~ 和4650\AA ~ 处的两个宽WR峰表明所有两个源中都存在WCE和WNL星群。 我们还确认了Mrk~35中WR特征的存在，此前在不同位置已检测到该特征。 观测到的4650\AA ~ 处的WR峰等效宽度以及WR/(WR$+$O)的推导数量比表明这些源中的恒星形成发生在短爆发持续时间内。 与年轻星暴中WR种群的最新模型进行比较，观测到的EW(\HeII )/EW(\CIV )/EW(WRbump)及其相对强度提供了指示，表明某些WR星系中的恒星初始质量函数可能不是Salpeter型的。 有趣的是发现发光的IRAS源F08208$+$2816几乎没有尘埃红化，这可能是由于存在强大的超风。 通过与其他使用霍普金斯紫外望远镜观测到的星暴进行比较，F08208$+$2816作为一个合并系统为研究年轻星暴对宇宙紫外线背景辐射的贡献提供了一个机会。 显示英文摘要

摘要： We report the discovery of two new Wolf-Rayet (WR) galaxies: Mrk~1039, and F08208$+$2816. Two broad WR bumps at 5808\AA~ and 4650\AA~ indicate the presence of WCE and WNL star population in all two sources. We also confirm the presenceof WR features in Mrk~35, previously detected in a different position. The observed equivalent width of the WR bump at 4650\AA~ and the derived number ratios of WR/(WR$+$O) imply that star formation in these sources takes place inshort burst duration. Comparisons with the recent models of WR populations in young starbursts with the observed EW(\HeII)/EW(\CIV)/EW(WRbump) and their relative intensitie provide an indication that the stellar initial mass function in some WR galaxies might not be Salpeter-like. It is interesting to find that the luminous IRAS source, F08208$+$2816, has little dust reddening, probably because of the existence of a powerful superwind. By comparisons with other starbursts observed with the Hopkins Ultraviolet Telescope, F08208$+$2816 as a merging system renders a chance to study the contribution from young starbursts to the UV background radiation in universe.