Search and study of young infrared stellar clusters

IF 1.8 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astrophysics and Space Science Pub Date : 2024-04-05 DOI:10.1007/s10509-024-04298-3

Naira Azatyan

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Abstract

The main aim of this paper is to study both the Interstellar Medium (ISM) and the young stellar population in the three star-forming regions, namely IRAS 05137+3919, 05168+3634, and 19110+1045. The study of the ISM includes determination of the hydrogen column density (N(H₂)) and dust temperature (T_d) in the regions using modified blackbody fitting. The main parameters of the identified and classified young stellar objects (YSOs) belonging to the regions were determined by comparing with the radiation-transfer models. We also constructed a color–magnitude diagram to compare the parameters of the YSOs with the results of the radiative-transfer models. The three stellar populations appear to have formed under different scenarios. In the cases of IRAS 05137+3919 and IRAS 05168+3634, the age spread is considerably wider, suggesting that the stellar population likely emerged from independent condensations. In contrast, the third region comprises a pair of ultracompact HII regions (UCHIIs), G45.12+0.13 and G45.07+0.13, with a notably smaller age spread. This hints at the possibility that these clusters originated from a single triggering event.

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年轻红外星团的搜索与研究

本文的主要目的是研究三个恒星形成区（即 IRAS 05137+3919、05168+3634 和 19110+1045）中的星际介质（ISM）和年轻恒星群。对 ISM 的研究包括利用改进的黑体拟合方法测定这些区域的氢柱密度（N(H2)）和尘埃温度（Td）。通过与辐射传输模型进行比较，确定了属于这些区域的已识别和分类的年轻恒星天体（YSO）的主要参数。我们还绘制了色-星等图，将年轻恒星天体的参数与辐射传递模型的结果进行比较。这三个恒星群似乎是在不同的情况下形成的。在IRAS 05137+3919和IRAS 05168+3634的情况下，年龄分布范围要大得多，这表明恒星群很可能是由独立的凝聚作用形成的。相比之下，第三个区域由一对超紧密 HII 区（UCHIIs）组成，即 G45.12+0.13 和 G45.07+0.13，它们的年龄分布明显较小。这暗示了这些星团起源于单一触发事件的可能性。

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来源期刊

Astrophysics and Space Science 地学天文-天文与天体物理

CiteScore

3.40

自引率

5.30%

发文量

106

审稿时长

2-4 weeks

期刊介绍： Astrophysics and Space Science publishes original contributions and invited reviews covering the entire range of astronomy, astrophysics, astrophysical cosmology, planetary and space science and the astrophysical aspects of astrobiology. This includes both observational and theoretical research, the techniques of astronomical instrumentation and data analysis and astronomical space instrumentation. We particularly welcome papers in the general fields of high-energy astrophysics, astrophysical and astrochemical studies of the interstellar medium including star formation, planetary astrophysics, the formation and evolution of galaxies and the evolution of large scale structure in the Universe. Papers in mathematical physics or in general relativity which do not establish clear astrophysical applications will no longer be considered. The journal also publishes topically selected special issues in research fields of particular scientific interest. These consist of both invited reviews and original research papers. Conference proceedings will not be considered. All papers published in the journal are subject to thorough and strict peer-reviewing. Astrophysics and Space Science features short publication times after acceptance and colour printing free of charge.