论文标题
通过恒星进化的小行星带存活：依赖恒星质量
Asteroid belt survival through stellar evolution: dependence on the stellar mass
论文作者
论文摘要
污染的白色矮人通常会吸收陆生状的材料，这些材料可能源自太阳系中的小行星带，例如碎屑带。对于具有质量的白色矮人$ m _ {\ rm wd} \ gtrsim 0.8 \，\ rm m_ \ odot $，被污染的白色矮人的分数显着下降。这意味着，质量$ m _ {\ rm MS} \ gtrsim 3 \，\ rm m_ \ odot $可能不会形成质量$ m _ {\ rm ms} \ gtrsim 3 \，由于恒星的强烈辐射可能不会形成。这与当前的碎屑盘和外行星观测一致。对于低质量白色矮人$（m _ {\ rm wd} \ Lessim 0.55 \，\ rm m_ \ odot）$，表现出污染的白矮人的一部分也显着下降。但是，确实表现出污染的低质量白矮人目前没有吸收，但过去曾积聚。我们建议，带有质量的主序列$ m _ {\ rm MS} \ Lessim 2 \，\ rm m_ \ odot $的小行星带不太可能在恒星演化过程中幸存下来。破坏可能发生在AGB阶段，可能是小行星与恒星风，高辐射，高辐射，或者对于具有异常接近的小行星带的最低质量恒星的相互作用，在内部行星系统的潮汐轨道衰减期间散射。
Polluted white dwarfs are generally accreting terrestrial-like material that may originate from a debris belt like the asteroid belt in the solar system. The fraction of white dwarfs that are polluted drops off significantly for white dwarfs with masses $M_{\rm WD}\gtrsim 0.8\,\rm M_\odot$. This implies that asteroid belts and planetary systems around main-sequence stars with mass $M_{\rm MS}\gtrsim 3\,\rm M_\odot$ may not form because of the intense radiation from the star. This is in agreement with current debris disc and exoplanet observations. The fraction of white dwarfs that show pollution also drops off significantly for low mass white dwarfs $(M_{\rm WD}\lesssim 0.55\,\rm M_\odot)$. However, the low-mass white dwarfs that do show pollution are not currently accreting but have accreted in the past. We suggest that asteroid belts around main sequence stars with masses $M_{\rm MS}\lesssim 2\,\rm M_\odot$ are not likely to survive the stellar evolution process. The destruction likely occurs during the AGB phase and could be the result of interactions of the asteroids with the stellar wind, the high radiation or, for the lowest mass stars that have an unusually close-in asteroid belt, scattering during the tidal orbital decay of the inner planetary system.
