In many stellar disks, observers also have found the spectral signature of silicate emission, indicating that small dust grains on the disk surface have been strongly heated by the stellar radiation.
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天文学家也发现了许多恒星气盘具有矽的发射光谱,表示盘面上的微小尘埃颗粒已被恒星辐射强烈加热。
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