论文标题
彗星29p/schwassmann-wachmann 1来自SOAR望远镜的光度观察的灰尘环境
Comet 29P/Schwassmann-Wachmann 1 dust environment from photometric observation at the SOAR Telescope
论文作者
论文摘要
我们报告了2016年8月12日与宽带B，V，R和I过滤器以及SOAR 4.1米4.1米望远镜（智利）进行的29p/Schwassmann-Wachmann 1彗星的光度观测。当时我们发现彗星活动活跃。在所有过滤器中获得的增强图像在29p/ Schwassmann-Wachmann 1昏迷中揭示了三个径向特征，而不论图像处理算法如何。使用Ivanova等人报道的使用29p/Schwassmann-Wachmann彗星的高分辨率光谱。 （2018）在同一日期，我们估计气体排放和连续体对用宽带B和V过滤器测量的总响应的相对贡献。气体排放贡献似乎很小2.5％。我们在29p/ schwassmann-wachmann 1中计算了四个过滤器中的29p/ schwassmann-wachmann 1中的灰尘产生，并通过波长找到其生长，从B滤波器中的3,393厘米到I滤波器中的8,561 cm。我们使用聚集的碎屑颗粒对彗星29p/schwassmann-wachmann 1中的灰尘颜色斜率进行建模。对B-R和R-I对的颜色斜率的同时分析表明，单个显性化学物种为29p/Schwassmann-Wachmann 1尘埃颗粒，由Fe-Mg硅酸盐组成，并遵守具有指数n = 2.55的幂律尺寸分布。该结论与先前对29p/Schwassmann-Wachmann 1的热排放研究一致。
We report photometric observations of comet 29P/Schwassmann-Wachmann 1 made on August 12, 2016 with the broadband B, V, R and I filters and the SOAR 4.1-meter telescope (Chile). We find the comet active at that time. Enhanced images obtained in all filters reveal three radial features in the 29P/ Schwassmann-Wachmann 1 coma, regardless of the image-processing algorithm. Using a high-resolution spectrum of comet 29P/Schwassmann-Wachmann 1 reported by Ivanova et al. (2018) on the same date, we estimate the relative contribution of the gaseous emission and the continuum to the total response measured with our broadband B and V filters. The gaseous-emission contribution appears to be very small 2.5%. We compute the dust production Af\r{ho} in 29P/ Schwassmann-Wachmann 1 for the four filters and find its growth with the wavelength, from 3,393 cm in the B filter to 8,561 cm in the I filter. We model the color slope of dust in Comet 29P/Schwassmann-Wachmann 1 using agglomerated debris particles. Simultaneous analysis of the color slope in the B-R and R-I pairs suggests a single dominant chemical species of 29P/Schwassmann-Wachmann 1 dust particles consisting of Fe-Mg silicates and obeying a power-law size distribution with index n=2.55. This conclusion is consistent with the previous thermal-emission study of 29P/Schwassmann-Wachmann 1.
