论文标题

特殊星系NGC 660,NGC 1512,NGC 4395和NGC 4618中的星形区域的研究

Study of Star-Forming Regions in the Peculiar Galaxies NGC 660, NGC 1512, NGC 4395, and NGC 4618

论文作者

Smirnova, K. I., Wiebe, D. S., Moiseev, A. V., Józsa, G. I. G.

论文摘要

研究了特殊星系NGC 660,NGC 1512,NGC 4395和NGC 4618中的星形区域(SFRS)。恒星形成区域的这种特征之间的关系,例如紫外线,近乎和远射通量,以及HALPHA和HI线,这些范围的表面亮度以及电离和中性氢的径向速度的散射。结果表明,在所有考虑的星系中,SFR的IR通量少于“正常”星系,但出于不同的原因:在具有最近相互作用NGC 660和NGC 1512迹象的星系中,这是由于SFRS的表面亮度低。在不平衡的星系NGC 4395和NGC 4618中,红外范围内的SFR亮度低是由于它们的紧凑尺寸所致。这些差异表明,恒星形成过程不仅取决于星系的形态类型,还取决于许多其他因素。

The star-forming regions (SFRs) in the peculiar galaxies NGC 660, NGC 1512, NGC 4395 and NGC 4618 are studied. The relationships between such characteristics of star forming regions as UV, nearand far-IR fluxes, as well as in the Halpha and HI lines, surface brightness in these ranges, and the scatter of the radial velocities of ionized and neutral hydrogen are considered. It is shown that in all the galaxies considered, the IR fluxes from SFRs are less than in the "normal" galaxies, but for different reasons: in the galaxies with signs of recent interaction NGC 660 and NGC 1512, this is due to the low surface brightness of SFRs; in the lopsided galaxies NGC 4395 and NGC 4618, the low brightness of SFRs in the infrared range is due to their compact size. These differences indicate that the star formation process depends not only on the morphological type of a galaxy, but also on many other factors.

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