超新星遗迹的红外发射与消光法估算尘埃质量：G93.7-0.2、G109.1-1.0、G156.2+5.7和G166.0+4.3
Estimation of Dust Mass from Infrared Emission and Extinction of Supernova Remnants: G93.7-0.2, G109.1-1.0, G156.2+5.7, and G166.0+4.3
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中文总结 AI 辅助
本研究采用三维星际消光图与红外光谱能量分布拟合两种方法，估算4个银道面超新星遗迹的尘埃质量，发现冷尘埃主导红外发射质量，两类质量差异或源于视线污染与参数不确定性。
中文摘要 AI 辅助
超新星遗迹（SNRs）是星际尘埃产生与毁灭的主要场所，量化其尘埃预算对理解宇宙尘埃的生命周期至关重要。本研究采用两种互补方法估算4个银道面超新星遗迹（G93.7$-$0.2、G109.1$-$1.0、G156.2+5.7、G166.0+4.3）的尘埃质量：三维星际消光图，以及基于WISE、IRAS、AKARI和Planct测光的红外（IR）光谱能量分布（SED）拟合。由每个超新星遗迹距离区间内的微分消光推导得到的消光质量分别为108.3、82.0、48.8和119.2 $M_\bigodot$。双组分（“暖+冷”）修正黑体拟合得到暖尘埃温度为43--74 K，冷尘埃温度为13--16 K，且冷尘埃组分主导总红外发射质量（约90--400 $M_\bigodot$）。消光质量与红外发射质量存在系统性差异，可能由无关前景/背景物质的视线污染以及尘埃温度和不透明度的不确定性导致。
英文摘要
Supernova remnants (SNRs) are major sites for both the production and destruction of interstellar dust, and quantifying their dust budget is essential for understanding the life cycle of cosmic dust. In this work, the dust masses of four Galactic SNRs (G93.7$-$0.2, G109.1$-$1.0, G156.2+5.7, and G166.0+4.3) are estimated using two complementary methods: the three-dimensional (3D) interstellar extinction map and infrared (IR) spectral energy distribution (SED) fitting based on photometry from WISE, IRAS, AKARI, and Planck. The extinction masses, derived from the differential extinction within each SNR's distance interval, are 108.3, 82.0, 48.8, and 119.2 $M_\odot$, respectively. A two-component (``warm + cold") modified blackbody fitting yields warm dust temperatures of 43--74\,K and cold dust temperatures of 13--16\,K, with the cold dust component dominating the total IR-emission mass ($\sim$90--400 $M_\odot$). The extinction masses and IR emission masses show systematic differences, likely caused by sightline contamination from unrelated foreground/background material and uncertainties in dust temperatures and opacities.
发表机构
- School of Physics and Astronomy, Beijing Normal University（北京师范大学物理与天文学院）
- Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University（北京师范大学前沿天文与天体物理研究所）
- Center for Astrophysics, Guangzhou University（广州大学天体物理中心）
- National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台）
- Institute of Astronomy and Physics, Inner Mongolia University（内蒙古大学天文物理研究所）
- Departamento de Fisica y Astronomia, Facultad de Ciencias Exactas, Universidad Andres Bello（安第斯贝尔托大学精确科学学院物理与天文学系）
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